Hi Alan,
I know how it is to have to put the hobby on the back burner.... I don't have any experience with the OS BX 35cc engine. If it's glow, I'd really try to convince you to go otherwise. As for the servos, there I can make a few recommendations:
Ailerons, I'd use minimum 60 oz, flaps min 60 oz, rudder min 100, elevator, min 100, throttle, standard, UC, standard. On my Spit, I've used the large Hitec 1/4 scale servos for the rudder and elevator (705's I think), 605's for the flaps, 645mgs for the ailerons, and 475's for the rest.
Sam
ORIGINAL: arg1415x3
Thanks for the comments Sam, had to change employment so not much time for the hobby recently. The ST 4500 deal fell through, but I did get a bargain on a new OS BX-1 35cc. More questions on the engine, why is there a very neatly drilled hole in the centre of the piston? And will I potentially still have engine cut out problems with this engine inverted? I like the idea of not having to cut the cowl too much (or at all) with these 2 stroke engines. Would it help to have a fuel pump for this motor?
Completely different questions, what torque values should the servers have. There will be a total of 8 servos.
2 for the ailerons
2 for the flaps
1 for the rudder
1 for the elevator
1 for the throttle,
1 for the U/C
The retracts are air operated, supplied from PICA while they still were in business.
Regards,
Alan