Hello everyone, I'm doing a car project in which I'd like to employ a 4-stroke engine, either a Saito 56 or 72. So, I've been searching the net for the last 30mins, and have come up with this much.

In several threads in RCU, it was said that engines 90 size and smaller could be started using the same unit for 2 stroke ABC engines. Would you think that a 500 size electric motor using a 7.2V 6 cell stick pack would have the power to turn over a 72, lets say if the start was with the engine already primed?

This is what we use to start our truck engines, a drill with this type of motor: http://www3.towerhobbies.com/cgi-bin...?&I=LXERF7&P=7

I can't find the official specs, but it looks to be either 400-500 size, and turns our 4-5cc engines over with authority. I checked the specs, and the Saito 72 has a 11.80CC displacement, and members in the car engine forums have informed me that the engines have fairly high compression.

I'd appreciate any information you guys could provide me, thanks for your time.

Tom.

this should do it
a bit price but should be pretty straightfoward
http://www.hobby-lobby.com/fema.htm

Sorry if I was misunderstood, but I'm asking if a 500 size motor could start a 72 size 4-stroke. I don't need the starter system, I'm going to make my own. It doesn't specify what size motor is used in that setup. BTW as mentioned, this is for a car,

Tom.