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    dave976
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    Member No.#6173
    Registered๐Ÿ“…26th Mar 2021
    Last Online๐Ÿ“…9th Jun 2023
    City๐Ÿ“North West
    Country๐Ÿ‡ฌ๐Ÿ‡งUnited Kingdom
    Genderโ™‚๏ธMale
    Age๐Ÿ‘ถNot Provided
    Posts๐Ÿ’ฌ621
    Followers๐Ÿ“ฃ10
    Likes Received๐Ÿ‘1366

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    ๐Ÿ‡ฌ๐Ÿ‡ง Scratchbuilder ( Commodore)
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    About
    Retired. Happy scratch and kit builder.
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    Recent Posts
    ๐Ÿ’ฌ Re: Ferrari race boat
    2 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 85 Views ยท 2 Likes
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    Thanks for the comments which I will share with Adrian. The model has a brushless motor and LiPo but is as you can see still too heavy. The balance is also wrong as evidenced by the sharp angle of attack at speed. I know he intends to continue with modifications so I will post further if and when.
    dave976

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    ๐Ÿ“ Ferrari race boat
    3 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 100 Views ยท 10 Likes ยท 9 Comments
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    Adrian a fellow club member has been building this model for a few years and finally put it on the water on Monday.


    ๐Ÿ“ Receiver aerial length
    3 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 52 Views ยท 1 Like
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    Looking this up on line and others have stated 14" to 40" but the manufacturers will have tuned the output to the length and type of wire used. Acoms sets are somewhat long in the tooth and were not the most reliable in my opinion. As most now use 2.4Ghz I doubt if there will be too much interference around on 27Mhz nowadays and I do recall it was common to add extra wire to the aerial without too many problems. I would suggest trying around 14" and doing a range check too see how far you can keep control. You could try speaking to a shop supplying Acoms sets and ask how long the aerial is on the Rx.
    dave976

    ๐Ÿ“ Are Motorized RC Scale Model Boats Hazardous?
    4 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 73 Views ยท 6 Likes
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    Hi Lew
    I agree with Roy.
    I can sympathise with your predicament and offer the following thoughts.
    Is the lake being used by sailing yachts? and is there a club holding regular meetings? If so I suggest you make contact to discuss what may be possible - perhaps sail and power days.
    I would also visit the site on each day of the week and see what if any activity is taking place on and off the water (ie the surrounds and car park etc). If there are houses in the vicinity you could try calling and asking politely if there are any issues with noise from the park.
    Once you have a better understanding of the current situation and possible objections/issues you can plan a way forward any get the Council on board.
    I suspect many of the issues relate to noisy fast electric models being used by individuals and could have resulted in some H&S and noise concerns involving the public.
    If you can demonstrate that you are a functioning club with rules and insurance and are prepared to help the council control the situation then I would hope an agreement could be reached allowing your club to use the facility on set days and times. possibly when no yachts were sailing if this could be an issue.
    dave976

    ๐Ÿ“ Sea Commander part VI
    5 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 30 Views ยท 5 Likes ยท 4 Comments
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    Finally managed to finish the restoration thanks to some fine weather.
    Repainted the front cabin sides after repair and fitted the windows into the slots on the inside of the cabin. Roof planking replaced with mahogany planks in place of the original thin mahogany laminate. I don't think this will suffer lifting like the previous attempt. Added some cockpit detail including door access to rear cabin and front cabin. Electrics refitted and radio tested so all set for a relaunch tomorrow. This is an original Aerokits model made by my friend Bill Lucy so the restoration was to make the model look as near as possible to the original from the 1960's era. Pics of the model plus a couple of views of the repaired inside front cabin.

    ๐Ÿ“ Anybody have a known-good schematic to homebuild an ESC?
    8 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 40 Views ยท 3 Likes
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    Hi Roy
    I like you made my own ESC's and Radio gear when the costs were beyond my means.
    I do believe the transistor unit using 3055 and 2955 large metal transistors was called "Pompeii" and I used two in my four propped HMS Wolverton cruiser, one for each motor driving two props via a homemade gearbox. Needed a big heatsink as the voltage drop was high so they got hot.
    The Electronize kit used a relay to change direction and had a built in BEC so much more efficient and as you say the MOSFET used had a low voltage drop so ran cool. Signetics no longer make the chips used but I acquired a strip of about 10 from a fellow modeller who was an ex employee who used to work for the company.
    Interesting idea about using a relay at full power to avoid the voltage drop and heat. Must have seemed like an early Turbo powered boost when engaged.
    BECs have evolved over the years and I have used the simple 7905 and also the more recent LM317 which I used to power all the leds in my RMS Olympic.
    Nowadays you can buy kit that is probably cheaper than the parts needed so it's not surprising many choose that route. Hopefully RodC will find a suitable circuit to build and enjoy the learning curve.
    Dave976

    ๐Ÿ“ Anybody have a known-good schematic to homebuild an ESC?
    9 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 64 Views ยท 2 Likes
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    Hi Rod
    I too dabble in electronics and some years ago Electronize published the full circuit diagram for their brushed speed controller. Made my own printed circuit board and bought all the parts on line. Problem is it used a Signetics chip that is no longer available(709 or similar).
    I have seen several circuits that use Pic chips but all are for brushed motors.
    I suspect you are more interested in brushless controllers but let me know if you would like details of brushed controllers.
    dave976

    ๐Ÿ“ PHOTOS
    15 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 18 Views ยท 0 Likes
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    Hi NickD
    When you are logged in and post to your Build Blog a window should appear to the right of the screen with an icon to add pics etc. Click on this and upload your pic(s)
    dave976

    ๐Ÿ“ Robbe Atlantis
    15 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 37 Views ยท 2 Likes
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    ๐Ÿ“ Reply
    Hi Jim
    Just found an article on RC Groups that shows details of the original Robbee rigging in side the hull.
    Not what I used and I did not install the Genoa but hope this helps for now


    https://www.rcgroups.com/forums/showthread.php?2687329-Robbe-Atlantis-HELP
    ๐Ÿ“ Capacitors for 12 volt Mabuchi Motor
    15 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 36 Views ยท 0 Likes
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    ๐Ÿ“ Reply
    Hi Double Rum
    Happy to have helped. As you are in Canada you need advice from our Canadian members as to where you can source capacitors locally. Most model suppliers on-line offer kits of capacitors at reasonable prices that will meet your requirements. Also any electronic component store will stock suitable ceramic components.
    dave976

    ๐Ÿ“ Robbe Atlantis
    15 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 37 Views ยท 3 Likes
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    Hi Jim
    I also acquired an Atlantis and eventually managed to rig the sails. My model is stored in a local lockup so I can't look right now but I will take some pics and draw a diagram next time I visit the lockup. I didn't have the plans but the model was complete. Its heavy and I removed the lead keel and cut in half so I could remove for transport. I did manage to find details on-line but didn't keep a record. I remember pulleys but until I look I am unsure. It looks magnificent on the lake but is a handful.
    Sorry I can't answer quicker but I will share when I get the details. Pic of my model attached
    dave976

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    ๐Ÿ“ Capacitors for 12 volt Mabuchi Motor
    16 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 52 Views ยท 4 Likes
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    Hi Double Rum
    There is a How To Articles section on this site and if you search for Motor Suppession you will see a diagram of how to connect the capacitors. You should use ceramic 0.1uf from each brush connector to the motor case and a 0.047uf ceramic capacitor across the brush terminals. Do cover the bare wires with insulated sleeving to avoid shorts.
    Suppression used to be a real necessity when we used 27Mhz and 40Mhz equipment and whilst modern 2.4Ghz may not suffer to the same extent the ESCs and servos may well be affected so if using a brushed motor suppression is advisable, and will prevent interference with other models who may still be using 27Mhz or 40Mhz.
    As others have said it is important to keep the main power wires well away from the servo wires and receiver aerial.
    dave976

    ๐Ÿ“ Plastic body Perkasa
    21 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 35 Views ยท 4 Likes
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    Hi StephenT
    I think you are best putting this aside for now. Looks as though it was a reasonable model at one time but fell on hard times and was badly altered to twin prop by someone who did not have the ability or knowledge to complete the task.
    I agree with Scratchbuilder that a complete strip out and repair is the only realistic solution. At some time in the future you will be looking for a winter project and this model should provide you with hours of fun restoring to full working condition.
    If you are anything like me you will have a whole host of projects awaiting attention.
    dave976

    ๐Ÿ“ Billings boats Colin Archer "414" Upgrading old electronics Futaba FM radio
    25 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 26 Views ยท 5 Likes
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    Hi bruce1946
    If the rigging is still attached to the sails and winch just plug into to FlySky and see what it does. Could be the travel has been adjusted to suit the number of turns on the servo and the direction may be different to your set. So initially make sure you can disconnect the power if the end travel is reached. Should be easy enough to replicate the original settings with your set. Once working you can see how the winch works the sails. We all have our own favourite method of controlling sails and without seeing all the connections it is difficult to offer help. Hopefully it may all work as is but please ask and supply photos if you need more assistance.
    Dave976

    ๐Ÿ“ Billings boats Colin Archer "414" Upgrading old electronics Futaba FM radio
    25 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 35 Views ยท 5 Likes
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    Hi bruce1946
    Nice looking model. We have in the past had a couple of the Colin Archer models sailing with the Club.
    As regards multiple sail winches I would stick with the single winch for all the sails as trying to adjust at any distance is a nightmare and works much better if all sails work together.
    The motor is useful for occasional use and the 550 type in your model should be OK and not need replacing. Not sure about the ESC but any 15amp modern type should suffice. Modern Flysky 2.4Ghz will just plug in and replace the FM radio.
    I use 6v LiFe batteries in my smaller yachts a but any 6-12v battery with a Ubec for the Rx would suffice. It is quite a beamy model so you will need ballast.
    Hope this helps
    dave976

    ๐Ÿ“ Motor and esc
    25 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 71 Views ยท 7 Likes
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    Hi Terry
    The motor is a geared Deccaperm. There were 6v and 12v versions and your motor has had the voltage erased so you will have to try with both sized batteries to see which best suits your model and motor. The Esc is I suspect a 12v max 15 amp and not known for their reliability especially if used to their max rating.
    Judging by the wooden tray behind the motor an SLA was probably used and my guess would be 6v 10amp.
    In the 1960's and 70's the Deccaperm motors were possibly the best and certainly the most expensive motors available. They are however very early versions using technology available at the time. Modern motors use much more powerful magnetic material and modern construction techniques produce much greater power than was previously possible. The Deccaperm had a very good if noisy gearbox which greatly improved the output power of the motor.
    Chances are the motor and Esc will work fine and as long as the shaft is oiled/greased and free running you could be afloat in no time.
    Plank on frame can be prone to leaking, especially if they have been stored for some years, so I suggest you float in water for several hours to find any leaks before you submit to the local lake.
    In its present form it is certainly a classic of its time and it would be a pity to replace the original set up for a more modern system if it is all still functional.
    Looking forward to hearing how you progress.
    dave976

    ๐Ÿ“ Switched Battery Box
    29 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 25 Views ยท 3 Likes
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    Hi Greg
    The switch unit is designed to allow you to switch the power from the battery on or off. The two connectors together are a female to connect the battery and a male to connect a charger. They are connected together when the switch is off. The single male connector goes to the rx and is connected to the female battery connector when the switch is on.
    A fuse is always a useful protection feature but personally most of my models use one battery which I unplug and remove from the model when not in use so have no need for a switch. My experience is that switches can and do fail and create another possible fault point.
    dave976

    ๐Ÿ“ Uploading videos
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 15 Views ยท 0 Likes
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    You could always upload the video to Utube then share to the site.
    dave976

    ๐Ÿ“ Locating Clubs on 'Boats Clubs and Lakes'
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 21 Views ยท 3 Likes
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    Hi Phil
    There is a map on the page and if you click on the location you are interested in the Model clubs in that area can be found.
    Alphabetical listing may not help as many clubs have names that do not relate to their location. There is a search facility which will find clubs by name if required.
    dave976

    ๐Ÿ“ FOR INFORMATION
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 27 Views ยท 0 Likes
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    Hi Phil
    There is a map on the page and if you click on the location you are interested in the Model clubs in that area can be found.
    Alphabetical listing may not help as many clubs have names that do not relate to their location. There is a search facility which will find clubs by name if required.
    dave976

    ๐Ÿ’ฌ Re: Sea Commander restoration part V
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 54 Views ยท 3 Likes
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    I am retaining the original colour scheme of mahogany flat surfaces and white for vertical surfaces. My previous restoration had fibre glassed the hull and painted in white. Didn't like the cabin top so this has been reworked as part of the replanking.

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    ๐Ÿ“ 1:150 Scale RN Crew.
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 46 Views ยท 2 Likes
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    My initial thought were N gauge but a quick search on Google revealed a pack of ten figures at 1/150 for about ยฃ7 and UK based. Not naval but easily repainted and chopped up to different postures.
    see link below
    Dave976


    https://modelshop.co.uk/Shop/Model-Detail/1-150-Scale/Item/1-150-figures-standin
    ๐Ÿ“ Severn class life boat
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 38 Views ยท 1 Like
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    Hi RonBMK2

    I have had plans from the RNLI (the last was the Arun) but I am not sure they still provide plans as they withdrew the service some years ago.
    The following link should enable you to build a model to any scale.
    Have a look at

    https://mikebmodels.blogspot.com/p/severn-class-rnli-lifeboat_16.html?m=0
    ๐Ÿ“ Other Functions for Model Boats
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 52 Views ยท 5 Likes
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    Have seen models with a floatation marker attached and wish I had one on my schooner when it sank. Recovered thanks to a friendly swimmer diver with a full size dinghy but would certainly of helped.
    Not sure about using the marker cord to lift the model unless it is very light.
    dave976

    ๐Ÿ“ Sea Commander restoration part V
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 63 Views ยท 7 Likes ยท 2 Comments
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    Made some more progress sanding down the cockpit floor and rear roof. Made some seats in the cockpit and fitted the front cabin windows having made a jig to hold in place whilst glue sets.
    The cabin roof which I had laminated with mahogany a few years ago is now, as the weather warms, showing signs of lifting. I had used the original lamination sheets used when my friend Bill built the boat. I will have to completely strip and replace with mahogany planks so more work but well worth the effort. Pics now posted. The laminated sheets were well attached and took lots of effort to remove.

    ๐Ÿ“ Sea Commander restoration part IV
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 64 Views ยท 7 Likes
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    The work continues but slowly. Managed to knock my Knee on the stairlift whilst walking down the stairs and have damaged a tendon. Slowly recovering but the cold weather can cause pain so not that much progress. Having looked at and removed some of the thin mahogany veneer I decided to use 1/16 strips to re-plank the cockpit floor and rear roof as I had used planks on the main roof which mainly survived any delamination.
    Have now reattached both side panels and just need to make and refix the front windows. Pics now posted.

    ๐Ÿ“ Locating Plans For A Civil British Fireboat
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 35 Views ยท 0 Likes
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    ๐Ÿ“ Reply
    Hi Greg
    look at


    https://en.wikipedia.org/wiki/Massey_Shaw
    ๐Ÿ“ What Radio do you use?
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 33 Views ยท 2 Likes
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    Hi chugalone
    I am sure 4 channels will be fine for your model. I would recommend a set with a screen as this will give you lots of useful information. We all have our personal preferences but most of my Club members use FlySky sets as others on this site have already mentioned. They are reasonably priced as are spare receivers. The Tx batteries are dry cells and mine last for at least 2 months with 2 weekly sails. They are simple to set up and you can bind several receivers for your different models. There are some basic advanced features including mixing facilities should you need.
    I have never had a problem with loss of signal provided the batteries are charged and the aerial is above the waterline.
    I appreciate you are over the pond in the USA so hope the FlySky or equivalent sets are available.
    Good hunting
    dave976

    ๐Ÿ“ What Radio do you use?
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 44 Views ยท 5 Likes
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    Hi chugalone100
    You are sailing an Imara tug. It has two motors, so two ESC's required and a rudder servo. It's a diesel tug so no smoke unit required. Sound unit can be wired to come on when the motors are engaged. Navigation lights etc can be switched on when dark on launching.
    I make that three channels required for your radio.
    The Spectrum is designed for advanced flying models for which it has many and varied settings. The specs show few or any that may be of benefit to a land or water based vessel.
    For most hobbyists the standard batteries suggested are more than adequate and Lipo's should be avoided unless you are entering an endurance event.
    You only need one antenna, many 2.4Ghz rx have two mainly to help flying models which can rotate 360deg. Model boats remain in the same horizontal plane. Just keep the aerial above the waterline.
    If you can I suggest you visit a local model Boat club and talk to the members about their radio sets before you make your purchase. There are several manufacturers and whilst all work well some are not the easiest to use for novice users.
    Dave976

    ๐Ÿ“ What Radio do you use?
    1 month ago by ๐Ÿ‡ฌ๐Ÿ‡ง dave976 ( Commander)
    โœง 51 Views ยท 5 Likes
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    ๐Ÿ“ Reply
    Interesting video showing how to use the FrSky receivers S-bus system to provide redundancy rx control. Looks like he used a Radiomaster TX16 Transmitter using Open Source which is identical to the FrSky system and works with their receivers.
    I have used this system to expand the number of channels up to 16 but in all honesty I struggle to remember what more than five or six control.
    Certainly bound two receivers to the Tx but I would have liked to see the system actually work should the signal be lost from the main Rx.
    As an ex flyer I am well aware of issues with loss of control but in my opinion the main causes are power related, either through operator error (not switch on or uncharged battery), or poor maintenance and failure to properly ground check the model before launching.
    My main concern with this system is the fact that all controls are via the main receiver so any problem with that may prevent the slave receiver from communication via the bus.
    Might be good for model flight where distances are much greater than model boats but not for the novice modeller.
    dave976



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