Electric Models

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The construction of electrically powered models has become very popular over the last few years. This section of the website shows some of the models flown by LMA members.

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10ft span B-17
converted to electric

Martin Collins (3005)

B17-01

This is my 10ft span B-17 which i converted to electric as i no longer fly glow (too messy and ruins the finish on a plane!),it is fitted with AXI 4120/14 motors with 12×8 3 blade vario props (you can alter the pitch), they are powered by 5 a123 cells per motor, the speed controllers are HiModel units. Two of the motors i already had and the other two were sourced from ebay, the batteries came from 2 Dewalt drill power packs from the American Ebay site, each pack contained 10 cells which i then split into 2 `B-17 flight packs`. These a123 cells can be fast charged at upto 8 amps giving a charge time of just 20 mins and unlike lipos don`t self destruct! Cost breakdown for the conversion is used motors £50 each, 20 a123 cells £150, 4 speed controllers £100 and varioprops £100, this was offset by selling the 4-strokes at £50 each.

All up weight is the same as when it was i.c with .52 four strokes which is 32lbs. It was built from the RCM&E plan several years ago by Steve Ogden and is a lovely flier and well suited to the electric set up. It is painted in the colours of `Double Trouble` which flew from Rougham during WW2, i had much delight in flying her from there at an LMA fly in day during which i took and passed my LMA proficiency test with her

york
Andy Johnson’s York seen at the Catton show in 1995. This model has a wingspan of 10 ft and was designed and built by Roy Salter. The model is powered by 4 Multiplex 600 motors with 3:1 gearboxes driving 12″x8″ props wired in series to four Sanyo, eight cell, 2400mAh packs. Flight time is around 10 minutes. Note the lack of an undercarriage; the model uses a dolly to take-off.

a10Here is a model of an A10 Warthog powered by electric ducted fans. The model is 17% scale with a wingspan of 3m. It is a really excellently finished and detailed model complete with flaps, retracts and bomb release. The motors used are Plettenburg HP300/40/AS2 driving Aeronaut Turbo 400 120mm fans. The batteries used are Thunderpower 10sLiPo 6000mA to provide 36V to each motor. These produce 56A at take off and between 25-40A in-flight. This produces a thrust of 16lb. The model is of built-up construction and covered with CT500 glass cloth. total model weight is 13kg. (Cosford 2005)

a10-cockpit
Just look at the effort that went into producing the cockpit. This is no run of the mill electric model! (Cosford 2005)

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