Mainly it's a matter of wing loading. You can't effectively strap on enough
batteries to overcome a heavy airframe, like you can bolt on a bigger
Try the forums at www.ezonemag.com for specific conversion info.
Almost certainly if you send enough it can be done, but gas planes are
bult heavier, cos its easier to do it that way, and they need to
withstand a lot of vibration.
That, plus the extra weight of the batteries, may make an already not
spectacular model into a tip stalling underpowered nightmare.
Unless there is good reason, if its alreadt built, don't bother. If its
an ARF, it can be done. If its a kit or plan, and you are prepared to
work on lightness, its good.
If you have a previous gas model with afair amount of wing area versus
weight of the airframe, covering and paint, it may be practical to convert
to electric power. For example, a 40" or bigger wingspan J3 Cub that was
built reasonably light can ROG and fly on a geared 2.3:1 Speed 400 6volt
motor and nine 600AE or 500AR batteries using a 9X5 prop. If it was built
heavy, it will fly faster /less scale-like. A previously glow powered WWII
type scale low wing fighter of 55" span would require much a more powerful
i.e. expensive motor and battery pack to fly and might have to fly a little
too fast for comfort to avoid tip stalls, etc. due to total weight of
batteries, etc. People who convert gas model fighters to electric power
usually start from a new kit and build in as much lightness as possible.
There are many smallish WWII fighter kits designed for electric power. They
usually are hand launched or catapult launched and have no landing gear to
reduce weight and belly in on landings. Large high performance electric
powered fighters are appropriate for people with advanced electric
experience and big wallets. There are a lot of semi scale molded foam
electric Park-flyers like the GWS P51 Mustang and Zero fighter. These have
undercambered wings for slow flying in small spaces . If you are interested
in electric, register on E-Zone, read various columns and ask questions.
The reason I was asking is that I would like a small scale model of a
Cessna and think it would give me more places to fly if it was electric
i.e. less noise. I have been looking but seems all the great looking ones
Hmm. Then its time to grab teh modelling kniofe and build...or accept a
less than good looking one.
Fortunately the Cessna is easy enough to convert to electric if you want
to pick a gas kit.
It will carry a big battery load and won't need huge amounts of power to
Go to the ezone and ask again.
When you say "small" I don't just how small you
are looking for. If interested in 40" or so WS,
1/2 A size you may want to look at some of
the models here.
They don't have a Cessna but they do have an
Aeronca Champ and a Piper Super Cruiser that
build into very nice electrics. These are laser
and CNC cut kits. Very nice.Hope this helps.
On Mon, 14 Jul 2003 00:42:22 GMT, "martyp"
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