ORIGINAL: Jack211

<<Should there be lots of excess oil coming out these Saitos?>>

Rob, you may wish to find the Saito Club on RCUniverse. We had a long discussion there on "velocity stacks." There's a picture of one at the Horizon site, search part # SAI50GK93.

My Saitos are the "dirtiest" engines I run. The firewall just drips with castor after every flight. So I'm ordering a velocity stack. I guess one size fits MOST Saitos, esp. mentioned were the 82a and 1.0 engines.

As I understand it, because the carb mouth is so open, prop wash sprays excess fuel from the top of the carb onto the plane. The velocity stack gives the carb vacuum time to work on the fuel. Submitters also mentioned an increased fuel efficiency with the v stack. Sounds like a winner to me, one of those "easy answer," EUREKA moments.

Oh, evidently you must SEAL the velocity stack to the carb using an O-ring of the right size, which is NOT supplied.

The item costs $6.75 plus.... But some guys are discussing making their own.

Jack<--who detests the castor we must put up with to get into the air