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    Modified Stiletto project
    22 Posts ยท 16 Followers ยท 121 Photos ยท 222 Likes
    Began 2 years ago by
    Fleet Admiral
    New Zealand
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    Latest Post 1 day ago by
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    ๐Ÿ“ Modified Stiletto project
    1 day ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 16 Views ยท 11 Likes
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    Another bit of progress, despite having to deal with the neutral line to my house being ripped off by upgrade work being done on the power lines in our street (could have been electrocuted !, cost me $2070 to have a new line installed,- expecting compensation !!) and the connection to the water main in the street failing a week later, and turning my property into a swamp,-(councils' problem to fix)

    The cabin and hull now have 2 coats of water based Zinsser 123 sealer applied with a 100x20mm roller. Too wet cold and windy for spraying, but the roller worked well. I use this paint to seal any wax which might remain after glassing, as it can cause spots to appear in acrylic paint. Dries quite quickly and gets a harder finish than normal undercoats or primers but is still good to sand. The Zinsser BIN oil/shellac based sealer is excellent for this also, but a bit harder to sand.

    When things warm up I'll spray it all with industrial primer filler as a base for the topcoat. Deck not glued on yet.

    JB

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    ๐Ÿ“ Modified Stiletto project
    7 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 28 Views ยท 10 Likes
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    Inside of the hull has now been coated with epoxy timber sealer/preservative, as well as the equipment trays, which have been made to be screwed in, fitted and unscrewed ready to be put aside for after painting. The prop cable drive shaft outer now has a strut which bolts through the hull and through ply reinforcing on the inside.

    The RX, UBEC and ESC will probably be Velcro'd in, and the water pump screwed on with its' mounts. Most things have now been pre fitted, so just a few things like rudder arm and link to make, and the deck can be glued on, (needs doing before hull painting so edge can be sanded flush with hull). Everything is fitted so it can be removed easily once the deck is on. Spray rails will be glued on , and shaft tube finally glued in before painting the hull.

    Cold and wet at the moment, so could be a while.

    JB

    ๐Ÿ“ Modified Stiletto project
    17 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 38 Views ยท 11 Likes ยท 1 Comment
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    Due to the nasty weather lately, I've been forced indoors, so have managed a bit more progress in the last 2 days. I've sanded the glass on the hull and cabin tops, painted a sealer on the cabin, made a rudder servo tray, a central radio(and other bits) tray, a battery tray and a front compartment tray.

    The center and front tray are 'hinged' to fit through the bulkheads etc, then folded out to fit. The front tray is secured with a 'cam' The servo tray fits in through the bulkhead then is turned clockwise to fit in place, (with only 1mm clearance- hence opposite corners angled). I prefer not to glue trays in, and screw them in wherever possible, in case mods or repairs are required later. Lots more to do yet.

    JB

    ๐Ÿ’ฌ Re: Modified Stiletto project
    16 days ago by ๐Ÿ‡ฆ๐Ÿ‡บ stevedownunder ( Captain)
    โœง 36 Views ยท 8 Likes
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    Hi JB,
    Yep winter is here, for us southerners.

    Nice progress.

    Cheers,
    Stephen.
    ๐Ÿ“ Modified Stiletto project
    21 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 53 Views ยท 16 Likes ยท 2 Comments
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    Stand is finished now, nothing fancy, just serviceable. It has a backstop and slotted side clamps now which secure the model for transport. The clamps work well and will also be handy for holding the boat still while working in the innards. Luckily didn't need any cutouts for the rudder, and it all just fits like I planned it๐Ÿ˜‰

    JB

    ๐Ÿ’ฌ Re: Modified Stiletto project
    20 days ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Rear Admiral)
    โœง 48 Views ยท 4 Likes
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    Thanks so much for the explanation Jbkiwi.
    I understood everything.

    I had imagined that was the reason.
    I prefer to have a perfectly straight axis and play on its inclination to make it parallel (or as less inclined as possible) to the line of movement.

    But, thanks to you, I learned a new RC modeling method and I also thank you for this.
    ๐Ÿ’ฌ Re: Modified Stiletto project
    21 days ago by ๐Ÿ‡บ๐Ÿ‡ธ Len1 ( Lieutenant)
    โœง 52 Views ยท 5 Likes
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    Stand is nicely done and sure offers some piece of mind that the boat is safely secured. Len
    ๐Ÿ“ Modified Stiletto project
    26 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 65 Views ยท 13 Likes ยท 3 Comments
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    Knocked up a stand for the boat today using ancient no nails technology (unless you call dowels nails) A bit more fun to do and no holes to fill. Still have some more cutouts to sort for the rudder when it's installed and some padding and staining. Finished with the building jig, so now just needed to have something smaller to sit the boat upright on to work on the inside bits. It will have a stop on the back to go against the transom so the boat will sit down in the correct place every time, and maybe some adjustable side clamps to keep the boat in place.

    JB

    ๐Ÿ’ฌ Re: Modified Stiletto project
    20 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 46 Views ยท 4 Likes
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    Hi Len, re Are cables available with different directions of winding in case of a 2 prop boat?

    You can buy them in left or right hand winds depending on your motor, For IC use they were usually always right hand wound - ie IC engines almost always ran anti clockwise (from the front) Now with electrics, they can run either way hence the availability of left and right winds. For circuit racing, boats might need the prop rotating in a particular direction for stability in turns.

    They are normally used for driving in one direction, (no need for a F/R ESC) but if you are gentle can be used on low speed in reverse (maybe cut the end point right back in reverse) The one I have was from Ali Express, so I'll see how it holds up. A bit of an experiment using it with the Stiletto, but I'm sure it's been done in a Stilettos in the 70s/80s with IC engines in them.

    Boat pics are from a boat I had around 1979,- it had an OS 45 FSR with a cable drive in a 40" glass Prather hull.

    JB
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    ๐Ÿ’ฌ Re: Modified Stiletto project
    20 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 46 Views ยท 4 Likes
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    Hi Alessandro, Re is the propeller drive axis slightly curved?

    the prop drive is a cable drive, mainly used in racing boats from the 70s onwards as a means of getting parallel thrust which is optimal for efficiency. These days fast boats mainly use a fixed shaft extension( stinger drive) from the transom, with a rudder (or rudders) behind or beside it similar to a surface drive. The cable drive has a left or right hand wound cable like a car speedometer and is usually only run in the direction of the windings of the cable (ie trying to tighten the windings).

    Not really suited for reverse unless used slowly, as the cable can be unwound under force and damaged. Beauty of them is, you can bend the outer brass tube with gentle curves to align the drive. The motor has a collet which clamps the cable. Very simple to remove for greasing, and to a certain degree self aligning, being flexible.

    JB
    ๐Ÿ’ฌ Re: Modified Stiletto project
    25 days ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Rear Admiral)
    โœง 64 Views ยท 5 Likes
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    Hi Jbkiwi, I was looking at the images of your work because there is always something to learn.
    But am I wrong or is the propeller drive axis slightly curved?
    Is it just my impression, an optical illusion of the photo or is it really like that?
    I am referring to the section that comes out of the hull.
    ๐Ÿ“ Modified Stiletto project
    27 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 69 Views ยท 10 Likes ยท 7 Comments
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    A bit more done now some necessary house maintenance has been completed. Not a lot done but I've been doing some RC plane maintenance as well. Glassed the cabin tops with a fine cloth and polyester resin, rubbed a few coats of varnish stain on the deck, cut glass off the shaft slot and finished lining up the shaft and screwed the motor mount in place. Temporarily trial fitting bits and pieces for balance, and will be making floors to mount everything on later.

    Deck will be glued down when everything inside is sorted. Waiting for it to stop raining so I can put the hull on the drill press and drill the rudder tube hole straight. Winter now, so should be getting on with it a bit more.

    JB

    ๐Ÿ’ฌ Re: Modified Stiletto project
    26 days ago by ๐Ÿ‡จ๐Ÿ‡ญ Mike Stoney ( Commander)
    โœง 65 Views ยท 4 Likes
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    Hi JB!
    Have you fitted a flexible shaft to your model? How does the whole thing behave in general? Do you have to oil them a lot?
    Questions upon questions . . . ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚
    questioning greetings
    Michel-C.
    Ps: ๐Ÿ™ˆ๐Ÿ™ˆ๐Ÿ™ˆ oops sorry, didn't read your comments below
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    ๐Ÿ’ฌ Re: Modified Stiletto project
    26 days ago by ๐Ÿ‡บ๐Ÿ‡ธ Len1 ( Lieutenant)
    โœง 67 Views ยท 4 Likes
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    JB, thanks for the info on your prop "shaft". I didn't know it was cable drive. I never saw a boat using this before and I am just curious as to how it holds up under use as you pointed out the potential problem of cable unwinding. Are cables available with different directions of winding in case of a 2 prop boat? Keep use updated. Len
    ๐Ÿ’ฌ Re: Modified Stiletto project
    26 days ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Rear Admiral)
    โœง 68 Views ยท 4 Likes
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    I like the order and the huge spaces you have inside the hull, JBkiwi.

    I am intrigued by the length of the propeller shaft and the very central position of the electric motor.
    It was certainly an obligatory choice to avoid tilting the axis too much.

    I will follow with great interest your choices on the type of electric motor and all your tests. I hope you will give a detailed report.
    ๐Ÿ’ฌ Re: Modified Stiletto project
    27 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 67 Views ยท 3 Likes
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    Hi Pete, nice and shiny now, but wait till I get the belt sander onto it ๐Ÿ˜†

    JB
    ๐Ÿ’ฌ Re: Modified Stiletto project
    27 days ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 67 Views ยท 3 Likes
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    Hi Len, being a cable drive, it just needs regular greasing. It has a Teflon tube inner which the cable runs in. I might make a small acetal bush/cap for the top end just to remove any play, but it's not usually necessary as the cable is sort of self aligning. I'll have to get an ESC with reverse eventually, but with a cable drive you can't put much torque on them against the wind. Reverse would have to be gentle. It's a bit of an experiment so I'll have to see how it goes. Not sure if the inrunner motor will be suitable (maybe too much) but I have others to try. It's unusual as it has an internal fan, but will need water cooling in the boat- bought it years ago from HK but never used it.

    JB
    ๐Ÿ’ฌ Re: Modified Stiletto project
    27 days ago by ๐Ÿ‡บ๐Ÿ‡ธ Len1 ( Lieutenant)
    โœง 72 Views ยท 4 Likes
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    JB, nice work so far. Just curious if you will be installing some sort of bearing at the motor end of the stuffing box and also a way to lubricate the prop shaft/stuffing box.
    Len
    ๐Ÿ’ฌ Re: Modified Stiletto project
    27 days ago by ๐Ÿ‡ญ๐Ÿ‡บ MouldBuilder ( Vice Admiral)
    โœง 69 Views ยท 4 Likes
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    That looks really good JB. I would panic if I tried that glassing. Your result looks perfect.๐Ÿ˜Š
    ๐Ÿ“ Modified Stiletto project
    3 months ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 90 Views ยท 9 Likes
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    Warm last night, (10.30pm) so decided it was time to throw another heavy coat of resin on, (after some heavy duty sanding of the initial coat rolled through the cloth). levelled off quite well, so I'll give it a few days to set up properly, de-wax again, then attack it with the orbital sander and see how it comes up.

    JB

    ๐Ÿ“ Modified Stiletto project
    3 months ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 91 Views ยท 11 Likes ยท 1 Comment
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    A bit more progress, - was busy with displaying my racing dinghy in the Auckland wooden boat festival so haven't made much progress. Marked the deck, made the rudder, and last night glassed the hull. Thought it was an idea to glass the hull now, as the weather is getting cooler and rain finally appearing after months of nothing.

    JB

    ๐Ÿ’ฌ Re: Modified Stiletto project
    3 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง BOATSHED ( Lieutenant Commander)
    โœง 88 Views ยท 2 Likes
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    Wow that really looking great. Can't wait to see when you finish it and see her on the water and a video.
    ๐Ÿ“ Modified Stiletto project
    4 months ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 100 Views ยท 9 Likes
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    Inwales and other framing for deck support done, as well as front compartment floor supports. Floor would not fit through the bulkhead so was made foldable so it can be removed if necessary.

    JB

    ๐Ÿ“ Modified Stiletto project
    4 months ago by ๐Ÿ‡ณ๐Ÿ‡ฟ jbkiwi ( Fleet Admiral)
    โœง 102 Views ยท 11 Likes
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    Deck cutouts done and cabin roof side overhangs sanded off (didn't like them,- something to break). Holes at bottom of front screen filled in as well. Inwales etc to be done yet in the hull for the deck supports.

    JB

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