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Model Boats Website Team
November 2018: 9 people October 2018: 9 people September 2018: 13 people August 2018: 5 people July 2018: 8 people June 2018: 8 people May 2018: 7 people April 2018: 24 people March 2018: 13 people February 2018: 4 people
Thank you! Found this pump in Ali express. Here's the link if anyone needs: Waterproof Ultra-quiet Water Pump 4.2W 240L/H Micro Brushless DC 12V Water Pump Car Submersible Fountain Aquarium Circulating https://s.click.aliexpress.com/e/cVs7aajO
Hmmmm!! Waterproof? Have you ever tested that? I'm not so sure, having used them in the office virtually since their inception. Anyway, when they are mounted on the boat / ship they need sealing in with a coat of clear lacquer or they may sometime 'float' off again. Apart from that have not yet seen any transfer paper made for Laser printers. Transfer paper made for Ink jet printers may melt 😲 in laser printers in the final transfer / fixing unit. I can tell you, it makes an 'orrible sticky mess wot ain't easy to get rid of. Doug
"It's not very heavy and it won't get wet!" Unless you never put it down on wet grass, and drain and then towel your boats after use before putting them back, it will. Be sure to get all the water out of the prop-tube.... " I can't be arsed with fancy carpentry. " No carpentry involved. The material is like cardboard, and you just cut it out with a Stanley knife and fold it. Takes between 10 and 30 mins to make a box from scratch... " And what IS Correx? " Sometimes known as 'twin-flute', it's the stuff estates agent's boards are made of, amongst a myriad of other uses. A twin-walled polypropylene rather like a kind of cardboard made of plastic. Very tough, feather-light and impact-resistant. Self-coloured (many colours available) and completely waterproof. Needs no framing - the sides are strong enough on their own... See the link for full description, place to get it and plans...
My wee red boat after a rub down and a file/sand on the steel keel. This morning I painted the red with HMG enamel and got the green mixed in the same make enamel by my wonderful chap at Kett's Auto Paints. The mast came in two parts, so I did a slight scarf and glued it. When the joint is well set, I'll make a splint and set it in prior to a rub down and a good waxing. The steel (tinplate) parts came with the predictable rust, but with my selection of scrapers and chisels made of broken and worn Swiss files I was able to scrape most of it off back to reasonable shiny steel. The out of shapeness needed only a clout with a cold chisel type of bodywork tool in the right places to restore it to original shape. Loops were filed to lose most of their rust, but not replaced. They'll be Vaselined as a form of anti rust, waterproofing. I have some new 1.3mm cord coming from Caldercraft. I just hope I can remember how it was rigged. I ain't great with knots. The sails were absolutely filthy with some sort of oil based grime, but my dear bride sorted them out with Vanish and a good hand wash. Pics of those tomorrow. I love this stuff.! Martin
Good to hear you are making progress with the noise. My ESCs are not programmable as far as I know (There may be a card somewhere). They were cheap Chinese waterproof car/Buggy ESCs with Fwd and Rev which I wanted for independent drives but for the price and how well they work, you can't beat them (about NZ $20 each) They have a very soft start (you can count the revs) programmed in as std, and the only problem I have found is that they sometimes won't go straight into reverse without quickly nudging forward and back, (just need to drive in a scale manner and it's fine.) I'll put a pic of the unit and motor in (also a brushed one I am using in the MTB (x2) which work perfectly only NZ $9.00) They have braking, FWD, FWD+REV and batt type adjustable by jumpers. Throttle set-up is simple with full FWD and partial Rev set by the sticks. Both types are 30A and never even get warm. I purchased some fans for them but have never used them. The brushless units have a fan plug on them. The squealing I have may just require a switching frequency change on the ESC (8kHz/16kHz -more RF noise on 16kHz but more efficient) but I don't think I have that option (do you have that option to try on your set-up ? might be worth a crack). The sound units muffle it a bit anyhow. Boat runs at 10mph (GPS) flat out (looks way off scale) but only needs about 1/4 - 3/4 throttle for normal cruising. Will try to put up an external vid soon. Transmitter is easily modded to twin throttles,- excellent cheap set for boats ( later model has internal aerial)
Added a 60A ESC of Chinese origin, improved waterproofing, and modified the rudder water pickup. Repainted trim tab extension as while it sat in the test tank (AKA the bath) the water got into the wood and split the paint work car spray paint not as water proof as I had hoped. On the test I found it was pulling over 40Amps which is not what I want as this is a race boat with limited battery capacity so cut down propeller by filling of the lagging edge of the prop via a drimmel and a file, so now pulls under 30A at full throttle. At the pond I will check current and prop-sizes.
From my experience I would suggest 2-3x your motor current rating especially cheap ones from china, I have found that a brushless motor can rapidly draw high currents with fouling of the propeller by weed etc. I would check the current drawn with the propeller you intend to use with a watt meter in the test tank (bath) held stationary increase power and monitor the current drawn this must be well within the limits of your ESC this should show a 10-15% higher power consumption than when moving. The best bit of advice (which I often don't follow myself) is to put a fuse in line Please note some ESCs are not waterproof (avoid) or seal them with silicon sealant, go for a quality manufacturer and the highest current rating your can afford. Cheap 30A ESCs can be ok for low power motors under 10Amps my racing boat pull 60 Amps and is fused at 80Amps and has a 200Amp ESC
I built this 1/125th scale Amati kit of the Titanic over two years from 2016. It has enhanced etched brass details from Minibrass. Conversion for radio control involved making the hull waterproof with multiple layers of fibreglass cloth bonded with epoxy resin as well as the installation of a drive train and RC gear. With only a tiny rudder, steering is dependent on a mixer unit controlling the differential speed of the propellors.
Just a thought Martin on the wherry sails , have you thought of using boot polish to colour the sail. As you probably know that the original wherry sail started of white and it was only the waterproofing treatment they used that turned the sails black. Ron
R/C gear going in on a 2 piece plank, so it'll fit through the hatches. Some deck planks going on, king plank too. Coamings to help water proof from splash. These are Foamex, completely waterproof stuff. The hatches and houses will be fitted with magnets eventually. The planking is NOT a la yacht. For some reason Dan Hatcher laid deck planks like workboats and motor boats, parallel to the King plank, not the covering boards. Believe me when you've lived on one of these and put every pot you have under the deck leaks when it rains, you know the pattern of the laid deck! Rear deck half just rested on as the R/C gear is yet to be finished. Waiting for some more allly tube to guide the steering cables and braided line for the sheet control. Steering servo coming this afternoon. Martin
Hi Les, funny we've come full circle, I started my model sailing at newsham park back in the late 50s and was there at the beginning of "The Liverpool model POWER boat club back in 1964, when I was 14 years old. Notice the power was omitted from the clubs name approx' 15 years ago. In 1964 i had just completed my first aerokits sea scout complet with an ED seagull 1cc diesel, this club was where I met most of my mentors and founder members of the club, Jimmy Wilson, Cliff'Broadbent, Monty, Oscar Poulson etc etc all now sadly gone to that big lake in the sky where anything goes. I'm in southport now and do go back to newsham from time to time. Thank you for that bit of very interesting info'. The afore mentioned sea scout has just undergone a major re-fit after 55 years, the 1cc diesel has been replaced with a 3940 kv brushless and 60 esc running on 11.1 lipo, yes I know all to big for a little 24inch sea scout, but as the yanks would say " there ain't no substitute for C.C. Boy", you don't have to use it but nice to have. Martin you mentioned the old glue used in those days, the sea scout I made was glued using "caskomite" (can't remember the correct spelling) the boat is still 100% waterproof with no skin separation at all, I do not intend tarting the boat up at all, prefer to keep it the way a 14 year old boy (me) had made it apart from bringing the running gear up to 21st century and something that can be used at my local lakes. Norman.
Yep, built mine with my Dad, a 34" Crash Tender. We used the then new PVA glue and to be honest, 54 years later it still holds well and is waterproof. I really must finish it some day! I confess I never had an IC engine in a boat, but I've always had an ED Racer with water jacket and big brass flywheel. Still have it on my shelf with others, but I could never get the buggers to start! So Dad made sure the Crash Tender had a good electric motor when he spoiled me with it all for my 11th Christmas. I had REP single channel R/C and a Taycol Supermarine motor and Taycol coupling. That's what's in it and will stay in it. Alas the R/C gear was stolen. I could replicate the case, but there just ain't the time for all these things, so an old Mini Hex 1970s Propo set will go in it as a classic curio. I used it for years with the REP on the oyster ponds at Paglesham. Left, centre, right, centre, wiggle right, wiggle right and so on. The Taycol ate batteries! Martin
Thanks, I used to make top end model furniture for the Home Miniaturists. It's my way of finding a connection with my cabinet maker Granddad, who was a big model boat fan too, in fact he was a founder member of the Victoria Model Steamboat Club. She is 48x9x11 plus bowsprit. Height of rig is about 4 feet also. And yes the fitting on the keel is a piece of ally box section cut in half so it becomes U section, drilled through at equal spacing for the fin keel. Then the U section is screwed with brass screws and Marineflex sealer/adhesive to the keel, which is all solid hardwood. I did my sums and gave up, so once she was waterproof I put her in my son's fish pond and kept piling stuff in until she floated on her marks. Rigging won't be that heavy, but I made an allowance for it. Once it was floating right it turned out to need 14 1/2lbs. of ballast. BUT, that's inside. On the end of a 15" inch(ish) fin it will be less. I have 2 half bulbs cast by my other son in his back garden from my patterns. They will be bolted to the fin and faired in. Cheers, Martin