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View Full Version : Hooking up twin motors


southdakotarcflyer
04-12-2011, 03:37 AM
My friend is converting an old p 38 to elec. he hooked two 2200 lipos one to each motor and y corded the wires that go to the reciever. He ran each of the motors by them self and had no problems but when he ran them together the one speed control went up in smoke. He is wanting to know what he did wrong. I know this is not a lot of info but was the basic set up correct? LKB

Wildflyer
04-12-2011, 05:45 AM
On twins, you have to use one ESC for each motor, one of which would have it's red wire to receiver cut off, if they have BEC's in them, only 1 can successfully power the receiver.

They should be powered by 1 power source, (it could be 1 battery or 2 batteries in parallel,) so that the voltage is equal from side to side.

2 brushless motors, paralleled across 1 ESC sort of get into a fight, and the ESC loses, sorry about that.

CHELLIE
04-12-2011, 06:52 AM
Its even better to eliminate the BEC completely in both ESC, if you have a larger plane, and use a 10 AMP ubec, the BEC in most ESC are normally 2 or 3 AMPs, and most of the time they are Linear ( Resistor type ) and not very strong, (Switching ) BEC is much better, in a larger E Plane use a 10 AMP Castle Creation UBEC. always use a UBEC if using 2.4 IMHO, Take care and have fun, Chellie

http://www.horizonhobby.com/Products/Default.aspx?ProdID=CSECCBEC

http://www.google.com/products/catalog?hl=en&wrapid=tlif130258748693410&q=castle+creation+BEC&um=1&ie=UTF-8&cid=16979415357237603614&sa=X&ei=ZOijTanML4z0swOG4_H5DA&sqi=2&ved=0CDgQ8wIwBA#