Any suggestions what to use in the Electric dept to replace the trusty OS 15 on a profile C/Liner.

There are some specific equipment recommendations in this thread:

http://www.rcuniverse.com/forum/m_91...tm.htm#9121459

A short list of what you need for c/l electric would include:

A motor (and the hardware to mount it and a prop)
A speed control (ESC)
A timer/flight manager
A battery (actually, more than one)
A charger for the battery

Specific recommendations on the above will depend on some other factors, but the thread referenced has
some working setups for .15 size models.

Mike A