Just back from our annual Gambia trip where I met up with a lad called Joseph. He was very interested in model boats and proudly showed me his effort to make an electric powered model. The whole thing was built from a form of palm wood and was to be powered by a car wiper motor. The only tools used have been, a tenon saw, 1 Half inch firmer chisel, penknife an sandpaper. The propeller is the fan from an old computer. It must qualify as scratch built but shows the enthusiasm of a young man to get what he wants. Where are our youngsters showing the same in our hobby.
Of course it does Dave, it's a fine model as I said. I've been impressed all through this build blog 👍 and have said so. Just a touch of humour to help the world go round 😉 Particularly as RH is in Canada and not Australia. I'm very grateful to some of our Australian friends, as I have posted here. Especially Canabus in Hobart who promptly sent me a complete parts list including Hobbyking order numbers when I asked advice on a brushless, prop, ESC setup for my Sea Scout renovation. All now safely installed. Cheers Doug 😎
I’ve decided to go brushless instead of brushed with a view to adding brushless at a later date. I had a turnigy motor and Hobbyking ESC sat in the spares box and have ordered another pair. Will run this on 2S lipo to start with and go 3s if needed, depending on the watt meter results?
Hi Doug I agree the commercial stuff is not nice. I was suggesting the hobby plastic weld solvents freely available and used by fine scale modellers for joining plastic kits etc. It is sold under a variety of names, the SHG catalogue lists: PLAS1 Plasweld – Liquid Polystyrene solvent adhesive Plasweld special solvent weld will bond Styrene, ABS, Butyrate, Acrylic and other types of plastic materials. Easy to apply using a brush. Bonds in seconds. The Ultimate Plastic Building Tool , 50ml bottle 2.00 POLY3L Precision Poly cement 28ml with needle applicator 3.25 POLY4 Polystyrene Cement 12ml tube 2.00 POLY4L Mek Poly Liquid Polystyrene Cement 30ml Bottle 2.75 PLAS7 Plastic filler. Special filler for plastic modelling 2.50. There are many other suppliers in the UK and overseas. Like most glues it is recommended that you work in a well ventilated area and avoid breathing the vapours as far as possible. I do hope you weren't exposed to the substance for too long!
Just a few of my boats on display at shows last year. Its great being able to talk about ones hobby and get others interested. Some of the shows supply a small paddling pool so I can let youngsters have a go. Hope to see more of you at shows in the future. I usually take about 20/30 models and on 2 day shows change the display on the 2nd day. And my wife usually takes about 250 die-cast model lorries and buses. Along with a 1.76th scale circus for her display.
Thanks Dave, Eventually we will have put together a body of knowledge that model boat builders can use with some certainty. At present the information is sketchy, hard to find and sometimes ambiguous. The motor designers and manufacturers have not been very helpful. For my La Combattante iii missile boat I used two Hobbyking Keda 720kV motors rated at 215 Watts and 19.3amps max. They were the first brushless motors I tried. I was not sure how many amps they would draw, so I connected an ammeter and fitted my video camera so it read the amps whilst operating. At full speed they used only 8 amps each. Each of the batteries is from 12V made from 9 x NiMH 9Ah D Cells. I easily get over an hour run time at good speed. The boat is 1605mm long so not small. This information may help someone.
Hi I found this PDF on Graupner motors. Also the Hobbyking site shows the specs on a large number of their brushless motors. I am looking at replacements for two Graupner speed 600 7.2 volts for a mate. I found a D3530/8 1700kv on Banggood with the same 5mm shaft and more grunt, less weight(74 grams against 192 grams)and about a third the price!!! I am going to install one in a Sea Commander(34") with a smaller 2 blade 32mm CNC prop on 3S Lipo 3300mah to test it out. Canabus
Hi All I am using Hobbyking 3639-1100 and 3648-1450kv motors in that size boats(Sea Commander, Precedent Huntsman and SG&K Gentleman's Runabout). 60 Amp ESC with either 3 or 4S Lipo batteries. Props 2 blade 40mm 1.4 or 1.6 pitch. The motors are a straight change over and the only change to the ESC is the low voltage setting for the 3S and 4S batteries. Canabus
Hi Dave, yes you're right. My version is marketed by Conrad here in Germany under the brand name REELY and they call it the 'HT-6'. It came with comprehensive manuals in German and good English on a mini CD-RM. When I checked on the Conrad site (they have an excellent Downloads page 😊) I found an update from 2015. I had no problems completely programming the TX unit from this manual. The only error in it was in para. 16 "press the binding button on the receiver ..." when of course it is on the TX! But at least the photo legend was correct😉 If anyone wants a copy of the PDF file PM me and I'll mail it to them. This reminds me of the discussion we had on this unit and clones / branding a few months ago! When I looked on the Turnigy site I found only the half Chinese half English gobbledygook manual 🤔 which needs a lot of interpretation. Penalty I paid for much better documentation was that Conrad price was nearly twice the Turnigy/Hobbyking price 😡 Good luck Chris, - if I were you I'd do a 'Factory Reset' and start from scratch step by step. Cheers Doug 😎 PS w.r.t. 'using what for what' My Turnigy/Reely will probably be used for most surface ships. Will probably use my Spektrum DX6 for the Catalina, and I still have the old Graupner MC-10 40MHz for the two subs where 2.4 gig don't woik 🤔. MC-10 only has two model memories so that fits! Now what can I do with the old Sanwa 35Meg job??? 30 years old and still going strong 😉
hi all, i have a problem with my prop shaft, every time i start the Hobbyking Brushless 3660SL (3180 KV ) the prop shaft comes adrift from the boat hull. it's powered by a 14.7V Poly Lipo battery. is it too powerful for an Aeronault Queen 36"? or is the prop shaft vibrating because of out of balance propellor or the coupling? i have used Heavy Duty Araldite to glue the prop shaft on to the boat. it has come adrift 2 times now. Thanks for any help i may receive - Graham