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>> Home > Tags > electric

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electric
huntsman plan by Black Dog Jack Seaman   Posted: 7 days ago
Model Boats magazine January 2016 ncluded a free plan of a Huntsman 31 complete with photos and a step by step build guide. Unfortunately the model is 24". I also wanted a bigger model so I redrew the plan double size. It wasn't too difficult and only took a couple of evenings with a some lining paper from B&Q and a calculator and voila! At the moment I am planking the roof of the cabins and trying to decide between a brushless motor and an old Weston rare earth brushed motor I used to use for fast electrics. The article in MB also ran into February 2016 where all the fiddly finishing bits were described, also with many photos. I expect one can obtain back issues from their web site. Anyone interested in Huntsmen should get these two issues for the detail alone.

Some more Cordene time - at last! by ThatSinkingFeeling Chief Petty Officer   Posted: 9 days ago
After a slight pause (6 months since last post 😱) have finally found some time between family and work commitments to push things forward a bit. A bit short on workspace at the moment as garage and office is chocca (Hi Dad - when we move house can you look after some stuff for us...?) so have spent some time practicing battery charging, and setting all the electrics and basic R/C controls up on a little test rig. The blue support for the prop drive shaft is a bit of a clip-on folder binder strip I stole. The shaft is held perfectly. I'll keep this in reserve as a possible means of mounting things in the hull, when the time comes. I have a 2000mAh Nimh battery powering a 10A Deans marine ESC. The receiver is a Devolution Devo RX1002, the servo an Align DS520 (both salvaged from my foray in to the lunacy that is R/C helicopters). The motor is a Deans marine KYTE. Just messing with the white metal prop for now, will obviously use the nice shiny brass one I bought on the proper build.

What motor have I got? by Dave M Fleet Admiral!   Posted: 9 days ago
Hi Chris They are all based on 550 motors made by Mabuchi or Johnson. They were GP motors available in different configurations for specific purposes. You can look on data tables to find the exact specs if the motors still have visible markings. The Graupner is designed to run on 8.4volts but the motors can be wound to run on different voltages. I suspect the one with the fan is taken from an electric drill. They used to be popular with the fly boys pre brushless so they are available in large quantities at cheap prices. I suggest you run them with an ammeter connected to a 8.4 (approx) battery and see what current they draw. High current would be good for a fast runaround for 10 mins or so, low current will have more tork and be suitable for a scale cabin cruiser/tug etc. If you have two that draw roughly the same current at the same volts they might be suitable in a twin prop, provided they both rotate at the same speed. Dave

correct size of wiring by RNinMunich Fleet Admiral!   Posted: 10 days ago
Hi Chris, no you don't need 70A wire! 😊 That might be horribly thick and stiff for a scale boat. You need wire the same size as probably on both your motor and battery. Same the 'standard' wiring in cars. Available I suppose at Halfords and any car diy shop. WHAT YOU DO NEED IS A 15 OR 20 Amp FUSE TO PROTECT THE WIRING IF THE MOTOR STALLS (PROP GETS BLOCKED) 😡 If your ESC has a BEC supply for the RX put the fuse in the positive motor lead, probably red or yellow. If not, i.e. you have a separate battery supply, put the fuse in the positive lead from drive battery to ESC. Then at least the RX will still work and maybe you can see from shore if it still responds; e.g. by switching on lights or some other visible function. With twin or more props fusing the motor wire itself can sometimes help get the boat home on a remaining engine. Somewhere in the Electrical stuff blog is a long discussion on the subject! Have a look here https://model-boats.com/forum/ style='background-color:yellow;'>electrical-related/28332 "What type of wire?" Happy sailing 👍 Cheers Doug 😎 PS: Almost forgot, if you have a brushless motor you have no choice but to put the fuse in the positive wire from battery to ESC! Brushless ain't got no positive!

3d printing by Midlife306 Admiral   Posted: 10 days ago
Hehe, that print is still going after 24 hours, I'll post a pic when done. The PLA I'm using costs £10 for a 1kg 400m spool. I'm guessing now but this project will use approx 7 spools... Electric I've no idea lol. The pic is distorted, I'll post another tonight, print area is 220 x 220 x 240 Cheers Wayne

3d printing by RNinMunich Fleet Admiral!   Posted: 11 days ago
Hi Wayne; Looks like high rise flats for bees at the moment 😉😉 How does the cost of filament and electricity compare with conventional material or a kit?? How many reels is that so far? How ig is the bed? Looks enormous😲 Cheers Doug 😎

Firing Battleship at Wings & Wheels (UltraHD/4K) by RNinMunich Fleet Admiral!   Posted: 16 days ago
Hi Boaty, Apparently so! 😊 There was some discussion about this here a little while ago https://en.wikipedia.org/wiki/Peasholm_Park "Events Naval Warfare event The Naval Warfare event, Battle of Peasholm,[9] has been played out for half an hour three times a week during the summer season for over 80 years. The model boats used are mostly man powered earning the fleet the title of "The smallest manned navy in the world". All the boats were man powered, until 1929, when electricity was introduced, and now only the larger boats need to be steered by council employees. In the early days, the models were First World War battleships and a U-boat. Then, after the Second World War, the fleet was replaced with new vessels and the battle that was recreated was the Battle of the River Plate." http://www.discoveryorkshirecoast.com/Scarborough-Naval-Warf... Pics attached!😉 Cheers Doug 😎 (Don't get shot😡)

Looking for a Sea Queen by rolfman2000 Commander   Posted: 18 days ago
Hi all. As the title says, I am looking for a 46" Sea Queen to restore, and maybe convert to a brushless electric power train. Any model considered, but I do have a budget of £60 to £80. Thanks in anticipation. Best wishes, Dave W 😎

3 blades v 2 blades on air boat by Haverlock Fleet Admiral!   Posted: 24 days ago
if your using electric power its a case of matching rpm to watts. It is quite normal to use 3 bladed prop of the same diameter and pitch as a 2 bladed prop on the same model. The increase of blade area results in increased thrust with an obvious increase in current used. So for any given system its a case of matching motor revs/current/battery life to the motor parameters.

Precedent Huntsman 34" by canabus Commander   Posted: 25 days ago
[Score: 5/10] 34" Precedent Huntsman 34" Single Propellor (2 Blade X Type 40mm) Direct Drive to a 3648-1450kv (2 Blade X Type) Powered by LiPoly (11.1v) Batteries Controlled Through Hobbyking 100A car ESC - Comments: I bought it with a Merco 40/electric starter/radio as an unfinished boat. Changing over the brushless electric.

Precedent Huntsman 34" by canabus Commander   Posted: 25 days ago
Hi All I bought this boat as a unfinished project with an used radio and Merco 40 motor. Sold the motor with the new electric starter and started pulling the boat apart. Removed all the old driveline etc. Repaired the forward deck and removed the paint. Stripping down the cabin to repaint, also removing cockpit floor and seats.

Dolphin 16 (19) by AllenA Commander   Posted: 28 days ago
[Score: 7/10] 19"/1100g Dolphin 16 (19) Capable of 10mph and a runtime of 20mins Single Propellor (3 Blade 30mm) Direct Drive to a Graupner Speed 600 8.4v (3 Blade) Powered by NiMH (7.2v) 3Amp/h Batteries Controlled Through Chinese 320amp (10Amps) ESC - Comments: This is the Meccano Magazine January 1967 issue plan, built in balsa. I didn't do a build blog as the construction is well covered on the net. Started with an A4 plan and used Excel to enlarge it onto 9 A4 sheets. I chose something simple as I haven't built a boat for thirty years. Really enjoyed the build and re-learning how to overcome the problems that always arise. She is oversized being 19" long and having a 7.5" beam. She sits nicely on the water and begins to plane. Will upgrade the the battery sometime. The decking is worktop edge strip pre-glued but in future will use the unglued strips. The cabin was adapted to extend over the whole boat as there was little space for modern electrics. I will add in and out air vents as the motor will need to breathe. Also, the true model should have an upper deck and windscreen and this will be easy to add sometime in the future. Really surprised and pleased with results from aliphatic wood glue. The finish, which I am not completely happy with, due mostly to my own impatience, was achieved with Ronseal multi purpose wood filler, lightweight fibreglass laminate with Eze-Kote. Paint is Acrylics and Marine varnish. The electrics are: Acoms AR 201 Reciever, Servo Acoms AS 12, Cheap Chinese ,supposedly, 320 amp ESC and 7.2v Nimh battery pack. The Graupner Speed 600 8.4v, bought it cheaply some months ago, was already in one of my boxes and you can see the adaptation required to fit it into the boat. All the Acoms controls I picked up at a boot sale including an Acoms Techniplus Alpha Transmitter on 27mhz. Inside I used Hammerite Smooth Gold as I couldn't buy silver. Modern Hammerite is thin and squeamish and took 3 coats to provide reasonable coverage. One final rant I do like the new silicon wires but they are a nightmare to solder to a motor. I think I will use soldered connectors in future. So there we are, first model in 30 years and now so many models to build and so little time. Lessons learned...... don't be impatient.

Sea Queen refurbishment by BOATSHED Commander   Posted: 1 month ago
We need some pictures ?? Where did you get The Queen Dipped. I take it that's what you have had done. I have a Sea Queen and got her from a boot sale about 6 years ago.Still haven't started work on her. I have a few Aerokits, Sea Hornet, I made back in the 70's. Crash Tender, 48" Sea Commander, also from a boot fair Crash Tender 34" still in box unmade, 1994 when 50 were made on the 50th anniversary of the Aerokit model. When I saw it advertised in Model Boats grabbed one very quickly. Also have a Precedent Huntsman 31. Purchased that about 25 years ago. Had a 850 electric motor in her. Got a bit of a leak in the hull that's now sorted but she also needs a refurb now. As well as a Precedent Huntsman hull with no cabin top, going to make a top of some kind but different to the original. Hopefully will get round to them all one day. Plus quite a few other model boats.

Aerokits P.T Boat by boaty Commander   Posted: 1 month ago
From Boaty Does anyone know if there are manufacturers who are producing replicas of the Aerokits 40 inch P.T Boat kit. I bought one many years ago but it was already built and had an I.C in it which I replaced with electric power. I foolishly sold it some time after when I took up kart racing and I am now looking for another one. The Vintage Model Boat Company are excellent but I don't 😎think they do the P.T Boat

Smit Nederland no 528 by Dave M Fleet Admiral!   Posted: 1 month ago
Hi Brimarboat Just looked on The Billing website http://billingboats-direct.com/ and this model is advertised as: "All fittings included (e.g. position lights, anchors, life-belt, etc.)" They do sell all the electrical bits like motors, couplings, servos and Rc but the fittings should have been in the kit. Not sure of the scale but the measurements suggest 1:32 so you should be able to source suitable fittings. If it was a local shop I would be asking them to provide the missing parts Dave