BillS:

Reversing a Saito engine can be done either of two ways.

On the "Big Block" engines where the exhaust and intake both attach in an internally threaded port in the cylinder, all you have to do is switch the inlet and exhaust manifolds. Instant reversal. It also gives you symmetric engines, so you can have the cylinders both on the fuselage side of the nacelle and have the exhaust on the bottom.

If yours is a big block with the o-ring sealed intake or a mid series it's still easy, but you can't get the symmetry the others allow. Just change the camshaft. Check the parts listing for your engine, then go to the parts listing for a twin in the same series. If you picked the right one, you'll find the right cam has the same part number as your single, order the left cam and install it, you have reversed the engine. If your engine has more than a few minutes running time, it is strongly suggested that the tappets be replaced at the same time.

The big block engines can also be reversed by changing the cam. Or if you want the symmetric engines without reversing, use the reverse cam with the reversed ports. One cancels the other, you will have the symmetric engines and still have conventional rotation on both.

The props for reversed rotation? Zinger has what you want, if you can't use the Master Airscrew or APC pushers to match the tractor prop on the other engine. Most of the Zinger pushers are wood, and some people don't like wooden props.

Bill.