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    LewZ
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    Member No.#6724
    Registered๐Ÿ“…23rd Jan 2022
    Last Online๐Ÿ“…8th Dec 2022
    City๐Ÿ“Clearwater
    Country๐Ÿ‡บ๐Ÿ‡ธUnited States
    Genderโ™‚๏ธMale
    Age๐Ÿ‘ถ78
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    Lew Zee (LewsModelBoats)
    About
    Retired test/production equipment senior designer, CAD Operations Specialist. 3D modeling, printing, web sites.
    Members Harbour
    Frederick Mistral (aka "Duna)
    Here is my partial build model of the Frederick Mistral. The kit was made by Anfora and for some reason they call it "Duna". What stopped me from continuing was the rudder control. This was via a chain that ran on both sides of the deck just inside the gunwale. This ran from the pilot house back to a cam like arm on the rudder post. there were a series of pulleys along the inside of the gunwale to keep the chain in place. My problem was that I could not find a small chain that could withstand the tension. I made a lot of corrections/modifications to it following photos of the real tug. This included many new/replacement parts that I had 3D printed by Shapeways. They are shown in the last three photos. This is an interest tug *(the historic original is still floating on the Danube River) and I wish I could finish it. Lew
    My Web Site (LewsModelBoats.org)
    My "Scale Model Boats" (and tanks... and more) web site is http://lewsmodelboats.org It goes into a lot of detail on my model boats, tanks, R/C, 3D modeling, 3D parts, tips, and beyond, including many photos and links to videos. Along the same line, I have YouTube channel "eymccauley" (American Civil War naval officer) link: https://www.youtube.com/c/eymccauley/videos where you can find videos of scale model boats, tanks, club meets here in Florida U.AS.A.) and more.
    "Star Wars" Patrol Boat
    As weird as it sounds I just can't seem to see a model boat go in the trash. In this case, you can see the derelict model in the first two photos. It's not very fast and has a low freeboard. I decided to have some fun with this one - the photos are evident as to what I did. (1/12 scale.) Lew
    Ironclads of the U.S. Civil War (1861-1865)
    Disclosure: First off, these are not my models, but that of the "Old Navy" Steve Lund and Bill Hathaway. I had the pleasure of meeting them in 2007 at the Monitor Center at the Mariners' Museum in Virginia, U.S.A. At that time I was involved in Civil War reenacting (role as a U.S. navy officer) and we were all participating at a special event. The "Old Navy" guys brought a trailer loaded with 1/35 scale R/C ironclad models. I am putting together this information in case others are interested in building a Civil War ironclad, and need more information. I thought I had more still photos of the models but these are all I found. The video shows many of the models. [Sure, the U.S was not the first country to have an ironclad but did have the first battle between the in March 1862. Between the north and the south about 66 ironclads were completed during these four years. Some quite simple and others quite out of the norm. If you want to build a U.S. ironclad check them out - the variety is amazing.] The first photo is the full scale replica (hollow) of the U.S.S. Monitor located behind the museum. The second photo is that of Steve (right) and Bill (left), middle person is unknown. They are standing in front of an accurate reproduction of the Monitor at 1/35 scale. It an R/C - powered model. The remaining photos are close-ups of the Monitor model. So here is my video link: https://www.youtube.com/watch?v=GMnEmFW0XPk The video is a bit old but I think you get the idea. Steve and Bill made an excellent book, 'Modeling the Ironclads" which is available at: https://thenrgstore.org/products/modeling-the-ironclads . However you can preview it or print this out yourself you can download it at: https://walternelson.com/ironclads.pdf ps. I was going to build a 1/35 scale Monitor but got side tracked while searching for a way to make thick, black smoke which I could not find and this project eventually gave way to building other models.
    Standard Oil Tug
    Well, we all started somewhere! My first model boat (not including inexpensive model kits as a kid) was the Sterling kit, "Emma C. Berry." I had planned to R/C it including glassing the hull, but never got that far. So jumping forward to the next model I scaled up that little Standard oil tug kit "Despatch No. 9". I scaled it up to be 42 inches long and about 35 pounds in weight. Made mostly out of planked balsa with fiberglass covered hull it was not well done with many imperfections but from 10 feet away it looked good. Back then (early 1970's) there was not too many components available for large R/C scale models especially here in Florida, the "boonies" back then. I used a automobile heater motor for the drive and a servo driven three position switch for the speeds (low, medium, high) with power resistors. Another servo driven switch for forward, stop, and reverse. The radio was a four channel Heathkit that I had to build up. Power came from a 6V motorcycle battery. I enjoyed this boat for a few years. I bought the Graupner Schnellboot "Wiesel" in London in 1975, started it, but it took another 35 years before I finished it. Is that a record? Now the old tug sits up high on a shelf where it gets little notice. It reminds me to think about how the finished boat should not look. (Even the "S" on one side of the stack is up-side-down.) To make matters worse, I added some expanding foam ๐Ÿ˜ฎ under the deck for floatation - oops, needless to say I got more camber to the deck that I really wanted. Lew
    Club Rescue Boat ("Miss Amelia"; scratch built; Scale: ~1/18)
    What do you do with a boat hull that nobody wants, not in good condition, and not realistic looking? Build something different! This boat was the model for a "Balloon Boat". OK, this was a competitive one design boat where each boat had a balloon tied to the stern and a long prick on the front. The object was to puncture all the balloons and the last boat remaining with a balloon inflated was the winner. This was the prototype from which a mold was made and fiberglass hulls were produced. Now back to this boat... As you can see this hull has a weird shape and not built for speed. However it is very stable. By tearing out the guts and adding a Kort nozzle with a five blade prop yet trying to keep a "scale" appearance, this boat became the SSMBC's rescue boat. All it needed was a yoke to catch the disabled boat. Simple electronics, a stable platform, good power all makes for a good rescue boat. So far the record push for this boat is a 60 pound whaleback freighter.
    PT61 Gunboat WWII (Frank's kit with major mods; Scale: 1/20)
    This boat kit was started by buyer and passed though many hands until it finally reached me. Before starting I looked at the history of the PT-61. In the middle of WWII it was converted to a gunboat along with PT-59 & PT60. Trying to gather information took a long time before being able to start construction (which involved de-construction by the original owner). This is a heavy model but runs like the real one would because of all the armor, guns, and ammo on board. Yes, the real PT-61 did have two 40mm Bofors and sixteen 50 caliber BMGs. All three motors work, the outer two run through ESCs and the center one has a servo driven switch running forward only on another channel
    Springer #3 (Zip Kits; Scale: 1/18)
    This Springer (Jo Ann) is my third Springer build, I made it for my son. It is based on a real truckable pushboat but one that I saw within about 1,000 feet from where we operate our model boats (Lake Seminole Park, Florida). To get the real one in the water it had to pass the pond within a 100 feet of the road. I took a lot of photos of it from the shore and planned out how to build the model.
    Springer #2 (Zipp Kits; Scale: ~1/25)
    Ah, the "Skeleton Crew" Bill E. Bones! This Springer obviously has a comical theme. Unfortunately it is kind of top heavy and wind is its enemy. I will probably make an alternate structure for it. Bad planning!
    Springer #1 (Zipp kits - Scale: 1/18)
    Looking for a fun boat? Take a look at the Springer type tugs. Zipp Kits is one manufacture that makes the Springer easy to build and inexpensive. You can easily scratch build on yourself. I bought four of these. At 18 inches long they are small and "turn on a dime" and can be quite quirky like trying to ride a wild horse - a lot of fun. You can build them in almost any style (above the deck) from looking like a real truckable pushboat (like this model) to something completely zany. Let you imagination run its course. If you follow the regulations/specifications, these boats are meant to be "one-design" that is from the deck down there as rules and dimensions that apply so the boats can compete in water sports and racing. This one is base on a real pushboat that I found on the internet. The cabin can rise up thanks to some old inkjet printer parts I save a while back.
    Modular Barge (Scratch build; Scale: ~1/16)
    Want to build a barge to go with a Springer tug? Modular barges are truckable, that is they can be brought to a site, unloaded, fastened together to make a larger barge or bridge of almost any configuration. The real ones come in several sizes, 10 X 10, 10 X 20, and 10 X 40 (feet), X 5 feet high, are the most common sizes. A variety of accessories can be added. Mine is actually one barge scored to look like four 10 X 20 barges tied together. It is made out of wood (34" sides, ends, X 1/4" top and bottom with some weight added internally.
    M/V David Sizer (Scratch build towboat; Scale: 1/35)
    This is a scratch build inland waterways (U.S.) towboat, often called a push boat. (Not based on any real boat.) It has two motors individually controlled turning props in Kort nozzles plus four flanking rudders and two regular "barn door" rudders which gives it exceptional control, just like the real ones. It just loves to push barges!
    LC-3 (Trumpeter plastic model kit; Scale: 1/35)
    Bought this little model (about 18 inches long) wanting to motorize it. It took some time figuring out all of the electronics and getting the components to fit in the little compartment. It runs great as long as it is not too windy.
    Trawler (Helen kit by Artesnia Latina, modified; Scale: ~/20)
    One model boat I would never thought of buying/building was this one. It was partially built and got a good deal on buying it. With the double ended boat which gives great handling, and the multiple details of a fishing trawler, it is a boat that has a lot of appeal. I downloaded a number of photos of the type of trawler on England's east coast. Re-worked the hull a little as well as the rigging, added many details, lighting, etc. I like to run it when the wind is not too high.
    Dusseldorf FLB 2 (Krick model kit - major modifications; Scale: 1/25)
    This model was given to me by the original owner. It was about 80% complete but in "not so good" condition. It was partially working and I think the builder was frustrated with the multiple functions required. After looking at the model I realized that the kit manufacturer (Robbe years ago) design the kit after the real boat back in 1965. In 1979 it was lengthened and otherwise modified and the model bears little resemblance to the real fire boat as it exists today. This is my current project (September 2022). Photo descriptions (starting from top left): 1 - As received 2 - Real Dusseldorf FLB-2 (original length) 3 - Real Dusseldorf FLB-2 (extended length current 2022) 4 - My hull extended 5 - My superstructure frame (fwd) 6 - My superstructure frame (aft) 7 - My superstructure frame (side)
    Wiesel (Graupner kit - major mods; Scale: 1/40)
    I partially built this boat, set it aside for a few years, the restarted it after the internet was available. That prompted me to do some research which resulted in me back-tracking and making major changes through completion.
    ProBoat USCG 47 ft Motor Life Boat (Pro-Boat RTR, modified; Scale: ~1/18)
    Overhauled/modified and a lot of details added. Upgraded to an 8 channel RC Spektrum radio and two ESCs.
    Recent Posts
    ๐Ÿ“ Frederick Mistral (aka "Duna)
    11 hours ago by LewZ ( Chief Petty Officer 1st Class)
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    Here is my partial build model of the Frederick Mistral. The kit was made by Anfora and for some reason they call it "Duna".

    What stopped me from continuing was the rudder control. This was via a chain that ran on both sides of the deck just inside the gunwale. This ran from the pilot house back to a cam like arm on the rudder post. there were a series of pulleys along the inside of the gunwale to keep the chain in place.

    My problem was that I could not find a small chain that could withstand the tension.

    I made a lot of corrections/modifications to it following photos of the real tug. This included many new/replacement parts that I had 3D printed by Shapeways. They are shown in the last three photos.

    This is an interest tug *(the historic original is still floating on the Danube River) and I wish I could finish it.

    Lew
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    ๐Ÿ“ Yo Ho - Pirates of the Floridia (Springer #3)
    1 day ago by LewZ ( Chief Petty Officer 1st Class)
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    Bought them online a few years ago but cannot find where or when. They are 3 inches tall and most of the joints are moveable so you can pose them and also use them for still motion video.

    Lew
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    ๐Ÿ“ Yo Ho - Pirates of the Floridia (Springer #3)
    2 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I found the skeleton figures online, a few years ago. I don't remember if it was Amazon or Ebay.

    Lew
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    ๐Ÿ“ Yo Ho - Pirates of the Floridia (Springer #3)
    2 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Sunday, we had an outstanding (weather-wise) day for model boating! Temp around 78F/26C, wind varied between 0 to 3 MPH (mostly 0), with a clear blue sky.

    I took a short video of Springer #3 with the skeleton krew smiling. Her is the link: https://www.youtube.com/watch?v=pkwRrwvn0kk

    I'll have another one coming up, a good size tug, the "Imara" in a few days. It was built Howard, by another SSMBC member.

    Lew
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    ๐Ÿ“ Can anybody lend some insight about this boat?
    4 days ago by LewZ ( Chief Petty Officer 1st Class)
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    My guess this is a model of a USCG 30' surf rescue boat ("SRB", 30600 Series, built 1980-1990, being retired), possibility scratch built due to some inaccuracies.

    Link: https://www.history.uscg.mil/Browse-by-Topic/Assets/Water/Al...

    Lew
    https://www.history.uscg.mil/Browse-by-Topic/Assets/Water/All/Boats-Less-than-65-ft/Article/2007602/boat-30-surf-rescue-craft-srb/
    ๐Ÿ”—
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    ๐Ÿ“ Tora, Tora, Tora (big) models and an unusual "flakligther" barge
    5 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Until two years ago there was a private military museum that had many items from Saddam Hussein's uniform, loads of guns, tanks, trucks, full sized dioramas, etc. The owner died, items "disappeared" and his sons sold many items off at auction.

    I came across a few photos that I had taken before the museum closed two years ago, and thought they might be of interest to scale model boaters. There were several Japanese ship models (four on display and one in the storage area (too large for display) that were used in the movie Tora, Tora, Tora. Pretty big, about 15 to 30 feet in length.

    Another item was a German WWII "Flakligther" barge built in Tampa (Florida) by the Tampa Bay Ship Modelers Society. I was told this model was about 1/35 scale.

    Lew
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    ๐Ÿ“ Transmitter and Receiver
    7 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I agree, the "best bang for the buck" are most of the FlySky radios. I have four of the FS-i6X transmitters and even more receivers (plus several other brands). My son has a few himself. They compare to Spektrum in many but not all features.

    I have one Spektrum radio, a DX8G2 transmitter and two AR8000 receivers. Just one AR8000 receiver costs much more than a complete Flysky 8/10 channel system.

    As for comparison...

    My boat was 95% underwater for over 20 minutes. When I got home the receiver would not work so I bought another one. A WEEK later I decided to take the Spektrum AR8000 apart dried it out and blew out the dirt that seeped in. It works fine!

    Compare the two transmitters it feels like the DX8G2 is about twice the weight of the FS-i6X. The Spectrum's joy sticks have a much better feeling to them.

    I did not buy the Spektrum as it was given to me. If I needed another multi-channel radio I would not hesitate to buy another Flysky. They are reliable and do the job for me.

    In the photos I added a 3D printed reminder note holder. There is a narrow slit in the top so the note can be swapped out.

    Lew
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    ๐Ÿ“ Testors "Dullcote" - any alternatives tried?
    8 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Along the lines of the clear ABS cement I have a question: Has anyone tried an alternative to Testors "Dullcote"?

    I have been using this on my boats when I want to seal/waterproof things like decals or dull items like figures (which really isn't flat enough). It is getting expensive in the "rattle cans" tripling in price in the last two years (I guess this is part of what is killing scratch build modeling).

    My current project (RC tank related) involves spraying in some tight spaces and an airbrush would work much better versus a spray can.

    I know Testors makes a liquid/bottle version of this at a much more reasonable price but I don't want to use lacquer or enamel based paints in my airbursh.

    I found some suggestions on the Fine Scale Modeler site but they did not touch on the suggestions being waterproof.

    Any thoughts?

    Lew
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    ๐Ÿ“ Glue / solvent
    10 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I am glad "Stotty" asked about this. Testors widow cement does not hold well. We all know what super glue (cyanoacrylate) does to clear plastic window materials. So, I did some searching on this Canopy Glue and got mixed opinions.

    The Canopy Glue is water clean-up but there is nothing about it being water proof after setting.

    However, on several sites there is: "The Pacer Canopy 560 glue is NOT waterproof!!! White woodworking PVA glue, which is basically Pacer canopy glue, is available!"

    Here is one opinion on Amazon: "I tried this to stick acrylic painted wood frames to the thin transparent acetate window material. It did not stick to the plastic any better than anything else I tried like PVA. Only CA glue worked and it tended to frost the plastic."

    So if it is not waterproof at what point will it dissolve?
    Some water splashes on the "window" which might dry before it affects the glue?
    Rain (a good soaking)?
    Probably not hold if the boat sinks, but that would be the least of my concerns.

    I guess this requires some testing!

    Lew
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    ๐Ÿ“ Flags
    11 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I never tried printing on silk. If you do let us know how it turned out. Thanks.
    Lew
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    ๐Ÿ“ Flags
    12 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I make my own, here is how: http://lewsmodelboats.org/PDF/MakingSmallFlags.pdf
    Lew
    http://lewsmodelboats.org/PDF/MakingSmallFlags.pdf
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    ๐Ÿ“ Propellors
    12 days ago by LewZ ( Chief Petty Officer 1st Class)
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    For a single prop I would go with a counterclockwise prop. Most motors are manufactured to turn counterclockwise (for efficiency) anyway. Check the data sheet for the motor you want. Here is an example of a common motor: https://datasheetspdf.com/pdf-file/1401824/MABUCHI/RS-380PH/...

    Also note that most motor spec sheets show the direction as looking at the shaft end of the motor. This works out well as boat propeller directions are typically viewed from looking at the transom.

    Lew
    https://datasheetspdf.com/pdf-file/1401824/MABUCHI/RS-380PH/1
    ๐Ÿ”—
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    ๐Ÿ“ Propellors
    12 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I think this subject goes a little "deeper". If my old memory serves me correct I believe the theory is that a boat's transom actually moves left or right because of the propeller's depth in the water. Water near the surface has less pressure, and that pressure increases the deeper the propeller gets.

    The bottom line is that if a propeller turns counterclockwise there is less sideways pressure near the surface and the opposite side of the propeller (the bottom) has more sideways pressure forcing the stern of the boat's transom to go left (port). For clockwise rotation the opposite is true.

    So using a counterclockwise prop will cause the stern to move to the left and this is handy when docking a boat to the port or left side of the boat. By steering slightly to the left while going forward slowly the whole boat will actually slide sideways slightly left. This will make it easier to dock to the port side of the boat. If you want to make it easier to dock to the right side you would use a clockwise turning propeller. (Most use the left, port, side).

    As for dual props turning in opposite directions the sideways forces are equalized by each propeller. However if the left prop turns counterclockwise and the right prop turns clockwise there is more afterward thrust, again due to the deeper pressure.

    One thing to watch for when using brushed motors is most of them are more efficient in one direction than the other. This is due to the brushes being offset inside the motor. In my experience it seems the RPM is also greater due to this fact. So using two identical motors one on each prop, may cause one prop to turn slightly faster than the other.

    Lew
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    ๐Ÿ“ Model Boats & Thanksgiving
    14 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Tomorrow, here in the U.S. we celebrate Thanksgiving. I want to expand my thanks word-wide to my friends who participate on Model-Boats.com for allowing me to share some of my thoughts, ideas, and photos in this wonderful hobby. More important is the opportunity for me to view the same from people around the world. Also thanks for opening my eyes to new ideas. The wonderful models on this site made by you, the model boat craftsmen, are a joy to look at and I am often awed.
    Happy Thanksgiving to all of you.
    Lew
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    ๐Ÿ“ Airbrush Handle
    15 days ago by LewZ ( Chief Petty Officer 1st Class)
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    With the recent jump in Testors' "rattle can" spray paint prices I decided to use my airbrush more often. (You probable saw my recent post for acrylic paint thinner.) I forgot to include this, but a while back I made a handle for my Neo airbrush and that was based on another brand with a handle I saw at a IPMS show.

    What a difference in holding the airbrush! This gives the other two fingers
    and the palm of the hand something to grasp on to.

    Easy to make - I 3D printed mine but it can be hand made. It slides up over the back of the airbrushes body with a slight snug fit to hold it in place. To hold it straight there is a concave area where the air supply runs up to the airbrush. Check the photos.

    Lew
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    ๐Ÿ“ Airbrush Handle
    15 days ago by LewZ ( Chief Petty Officer 1st Class)
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    With the recent jump in Testors' "rattle can" spray paint prices I decided to use my airbrush more often. (You probable saw my recent post for acrylic paint thinner.) I forgot to include this, but a while back I made a handle for my Neo airbrush and that was based on another brand I saw at a IPMS show.

    What a difference in holding the airbrush! This gives the other two fingers
    and the palm of the hand something to grasp on to.

    Easy to make - I 3D printed mine but it can be hand made. It slides up over the back of the airbrushes body with a slight snug fit to hold it in place. To hold it straight there is a concave area where the air supply runs up to the airbrush. Check the photos.

    Lew
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    ๐Ÿ“ Airbrush Handle
    15 days ago by LewZ ( Chief Petty Officer 1st Class)
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    With the recent jump in Testors' "rattle can" spray paint prices I decided to use my airbrush more often. (You probable saw my recent post for acrylic paint thinner.) I forgot, but a while back I made a handle for my Neo airbrush. That was based on another brand I saw at a IPMS show.

    What a difference in holding the airbrush! This gives the other two fingers
    and the palm of the hand something to hold on to.

    Easy to make - I 3D printed mine but it can be hand made. It slides up over the back of the airbrushes body with a slight snug fit to hold it in place. To hold it even more there is a concave area where the air supply runs up to the airbrush. Check the photos.

    Lew
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    ๐Ÿ“ Airbrush Cleaning Solution
    16 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I found an excellent and inexpensive airbrush cleaning solution (for acrylic paints). The link is https://www.youtube.com/watch?v=I7afdu2tgXA however here are the ingredients:

    Distilled water - 3 parts
    Window cleaner ("Windex" or equiv. with ammonia) - 2 parts
    Isopropyl alcohol 91% - 1 part
    Glycerin 1 drops for each 15ml of water

    In my case I used a 60ml plastic jar as follows:
    Filled with the water to 30ml
    Added window cleaner to 50ml
    Added alcohol to 60ml
    Added 4 drops glycerin

    Works great on slightly dried (several minutes) paint, much better than acrylic thinner. Will not remove time dried paint.

    Lew
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    ๐Ÿ’ฌ Re: "Whaleback" Freighter
    21 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Ron, I will not go into too much detail on Jim. He is retired, in his early 70's, and has building models since before I met him about 12 years ago. He doesn't bother with computers too much but enjoys his Canon digital cameras.

    The story of building the model of the "Whaleback" seems to stem from where is lived many years ago up in the great lakes area of the U.S.

    Jim is a laid-back person and deeply interested in building his models. Most of them are 1/48 scale, but in recent years he took a turn and started going after some complicated kits, some out of production for many years, like Sterling kits he found on Ebay. Other recent builds include some WWII battleships, plastic models that are motorized for RC.

    One unique thing about Jim is all (I believe) of his models involve gear reduction between the motor(s) and shaft(s). He hand makes small parts where many people will avoid the small details. Here is a video of one of his other models, the City Of Buffalo: https://www.youtube.com/watch?v=UL3oFawnCcQ

    There are a lot of photos of his work on our website... http://ssmbc-fl.org

    Lew
    http://ssmbc-fl.org
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    ๐Ÿ“ "Whaleback" Freighter
    21 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I know this is not one of my boats, but belongs to one of our club members. It is a 1/48 scale model of a "whaleback" freighter. The real George Washburn was built in 1885 had a length of 320 feet. What is unique about this is it had a almost tubular cross-section hull. Many times I heard visitors call it a submarine.

    Jim's model includes horn sound, lights, homemade smoke generator and a ballast fill/empty system to reduce transportation weight. Video Link (this is not on YouTube, you have to copy this link to your browser to see the video): http://ssmbc-fl.org/Videos/Video-03-30-2014-01.mp4 (๐Ÿ˜ฎThe link icon below WILL NOT WORK!๐Ÿ˜ฎ)

    I though some of you might enjoy this wonderful scratch built model!

    Lew
    http://ssmbc-fl.org/Videos/Video-03-30-2014-01.mp4
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    ๐Ÿ’ฌ Re: Tow Boat Kort nozzles
    25 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Stan, Glad to hear you are home safely!

    I took a little different approach to mounting my Kort nozzle to our rescue boat. The boat originally did not have a Kort and I thought it could use more thrust for heavy pushing. My first Kort (3D printed) for this boat did not fit that well after I made a new 5-blade prop (also 3D printed). It had too much of a gap between the nozzle's inside to the tip of the propeller blades. So after a few measurements and I printed a new Kort nozzle (in the photos) and mounted it. This ABS nozzle has a flange on the bottom with four mounting holes. It is quite sturdy and work very well.

    This is one more advantage for having a 3D system, design software and printer, for making models.

    The design of the Kort nozzle for efficiency greatly affects the performance, at least on real boats as opposed to models. These nozzles are not just a thin ring shape extrusion, but they have a specific cross-section profile to reduce drag. This is quite similar to an aircraft wing section.

    Lew
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    ๐Ÿ“ a club register of current models
    26 days ago by LewZ ( Chief Petty Officer 1st Class)
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    The hardest part is trying to coordinate all this. Get the information, take three quarters off the bow and stern closeup photos, Etc.

    There are quite a few more that needs to be added.

    Lew
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    ๐Ÿ’ฌ Re: US Coast Guard Utility Boat
    27 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Thought this might be a good place to put some Photos of Mike Shriver's scratch built 52 inch long boat USCG 40-foot utility boat that might have been what Dumas copied for their line. The photos are from 1974 and the boat was around well before then when Mike lived in Chicago. It was powered by an O&R gas engine, throttled but no neutral or reverse.
    Lew
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    ๐Ÿ“ a club register of current models
    27 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Some years ago I created this (link: http://ssmbc-fl.org/SSMBC-Photos-Members-Gallery.htm ) for our club, the Suncoast Scale Model Boat Club, in Florida. The purpose was for others to look at to see if anyone had built a model similar to what they are looking for, then they know who to contact. This is has not been updated, I never heard any comments on its usefulness.
    Lew
    http://ssmbc-fl.org/SSMBC-Photos-Members-Gallery.htm
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    ๐Ÿ’ฌ Re: Dusseldolph fire boat
    28 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Are you talking about batteries? If so, I am undecided at this point. The person who gave the model to me had two 12V sealed lead acid batteries in it. They are dead and are hard to dispose of. (I still have them along with a few others from my PC back-up systems.)

    I'm still quite a way from deciding. Most pumps (for the fire3 monitors) look like they are 12V and that might be the requirement. I do like the Hobbywing 1060's ESCs but I don't think they will handle the 12V batteries. I might fiddle with some 9.6V hump-back hobby batteries to see if the pumps work sufficiently. I will be using only two fire monitors as the lengthened (modern) version of the Dusseldorf FLB-2 only has two monitors.

    I attached a schematic/diagram that I had been working on as a reference. This will most likely change drastically.

    Lew
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    ๐Ÿ’ฌ Re: Dusseldolph fire boat
    28 days ago by LewZ ( Chief Petty Officer 1st Class)
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    I uploaded three photos of the Dusseldorf FLB-2 (fire boat) to my harbor's Dusseldorf section. This shows a comparison of the original superstructure (Robbe/Krick) and what I derived from photos. Some differences are quite noticeable like the three large windscreens on the kit versus the five smaller windscreens like on the real fire boat.

    Had to set this rebuild aside for a bit while I get some other work done. Ah! - it never ends.

    Lew
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    ๐Ÿ“ Springer push-boat goes under a footbridge
    29 days ago by LewZ ( Chief Petty Officer 1st Class)
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    Thanks!
    Lew
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    ๐Ÿ’ฌ Re: Dusseldolph fire boat
    29 days ago by LewZ ( Chief Petty Officer 1st Class)
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    At the bottom is an excerpt from the Krick instruction manual for the Dusseldorf fire boat. That is based on an 8 channel Futaba F-14 radio with a "multiswitch system". I don't know if or how many people actually use this setup, as it is kind of ancient now. Probably better and easier to use one of the moderate priced 14-18 channel radios so each switch/control on the transmitter has its own function.

    Whenever (if?) I get done with totally updating (eliminating the no-to-scale superstructure that Robbe came up with) my Dusseldorf FLB-2 - that is what I am planning to do.

    Lew

    Special function Required accessories:
    Turn extinguishing monitor A: servo
    Raise extinguishing monitor A: Servo + transmitter extension channel 5 Prop. Module Slider
    Lift extinguishing monitor B+C: Servo
    Turn extinguishing monitor B+C: Servo + transmitter extension channel 6Prop. Module Slider
    Pump on/off: Relay module ro8442 via decoder
    Turn radar on/off: Multiswitch Decoder ro8369 direct
    Raising/lowering crane: Transistor pole reversing module ro8249 via decoder
    Turning the crane r/l: Transistor pole reversing module ro8249 via decoder
    Armature lift/lower: Transistor pole reversal module ro8249 via decoder
    Turn the headlights: Multiswitch Decoder ro8369 direct
    Position light r/l/m/v/h on/off: Multiswitch Decoder ro8369 direct
    Headlights on/off: Multiswitch Decoder ro8369 direct
    Anchor light on/off: Multiswitch Decoder ro8369 direct
    Drag light on/off: Multiswitch Decoder ro8369 direct
    Blue light flashes: RC module flash + transmitter extension channel 8
    3-position switching channel
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    ๐Ÿ“ Springer push-boat goes under a footbridge
    1 month ago by LewZ ( Chief Petty Officer 1st Class)
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    I forgot to mention in the post that this was a Zippkits model from the deck down.
    Lew
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    ๐Ÿ“ Springer push-boat goes under a footbridge
    1 month ago by LewZ ( Chief Petty Officer 1st Class)
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    Here is a very short video of one of my Springers going past our floating dock and under the access footbridge: https://www.youtube.com/watch?v=dIe8TU6kiEY The video was recorded on Nov. 6, 2022 at Lake Seminole Park, Seminole, Florida, USA. Weather was clear, low wind, and about 85F.

    This Springer is based on a real "truckable" push boat based on several photos that were measured. The pilot house goes up and down like the real one, using a cog belt drive from an old HP inkjet printer.

    We were going to do a "push off" but the other Springer had a battery issueโ˜น๏ธ. Perhaps next time...

    Lew
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