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Old 01-25-2013, 01:22 PM
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Boomerang1
 
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Join Date: Jun 2005
Location: Sydney, AUSTRALIA
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Default RE: Change of pace.

Busy yesterday, shopping for a reciever & tiny wheels, downloaded & printed a plan,
dug out some servos, park flyer control horns, canopy & carbon tubes for pushrods.

I promised myself to finish my last project before starting another one but the Roaring 20
is so small it won't disrupt things too much.

I really should mix some fuel & give the engine a run. The mix I've found is:

Castor oil - 10%
Coolpower Synthetic oil - 10%
Nitro - 15%
Methanol - 65%

Should that be ok?

Mike, this is the voltage reg I use, just 3 parts, the chip & 2 tantalium capacitors.
I have used it on 3 cell lipo packs but it can probably handle much higher voltages.
Excuse the drawing, it was done on some default program on my laptop.

I usually make an aluminium bracket to mount it to the model & this acts as a heatsink
but it doesn't have to be very big. The higher the voltage of the large battery the harder
the reg would have to work & the more heat it would have to dissipate but from 7.4 volts
to 5 volts is a very small step. Keep in mind also, the more servos the greater current &
more heat. You should be fine driving 4 average servos & a reciever. - John.
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