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Scale Model Example

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A nifty multi-engine model might be the JanR P38 Lightning. It has a 48'' wingspan and uses two direct-drive Speed 400 motors with 5x5 props on 8 larger ``sub-C'' size cells (the motors are wired in parallel; see the SAM April and May 1997 newsletters online). The flying weight is almost 3 pounds. The motors are just under $10 each, and no gearbox is necessary on this fast and scalelike model. Scale models with 2 to 4 Speed 400 motors are easy to implement, safe (no engine failures), and inexpensive. You can also use Speed 300 motors, the smaller 4-5 cell siblings of the Speed 400, to keep the cell count down for small multi-engine projects. Those motors also run about $10.

More on rules of thumb for electric RC, and some online sources for catalogs and information, next time.



Craig Kulesa
Fri Dec 1 16:54:18 MST 2000