[quote]ORIGINAL: Gabrielsande

"..,funny enough the petrol saito don't use needle bearings on the conrod, could someone explain this to me!!"

20:1 gas to oil mix (as recommended by SAITO) apparently allows no needle bearings??


"...the other problem Im facing with this engine is because the carb is on the back ,[link]http://www.macgregor.co.uk/saito/fg30.htm[/link] the engine will be way foward, so two choices using a normal plastic mount, so I can slide the engine back and cut a hole for the carburator,in the firewall, doing this I cant use the nice supplied alloy mount which they say it helps cooling, or cut the firewall completly and re glue it an inch 1/2 back, I migh post few pictures so You can help me to decide "

The metal mounts I use (for my 120 ABC and 180 AAC) have enough beam to allow mounting the engine with the carb behind like the Saito has. Does the Saito thus mounted cause the weight (and cg) to be too far forward? Or, is the problem with the fit of the cowl with the engine this far forward? Is the existing firewall completely adequate as far as strength? If not, perhaps moving it back along with reinforcement would be the answer.

I would use the metal mounts as recommended by Saito for both cooling (additional heat sink mass) and for rigidity to reduce vibration and shaking. That's what I do.

Best regards, SPACEWORM/Richard/SAITO Club #635