Combines peterson air foil sieve in wheat

Reducing your return volume is easy to do if it consists of chaff, just install the air deflector. It will blow all the chaff right out the back of the machine, just crank the air up all the way. You probably will fix your shoe loss at the same time. If your return is from unthreshed heads, I would increase the rotor speed untill you start to get some cracking. If that doesn't do it, tighen the concaves down a little. We always run the concaves tight unless the wheat is threshing really easy, (like once in the last 10 years!). You can also cap off the top of the return auger in by the rotor cage so that all the return MUST go back into the rotor. With the top open, some of the return just boils out and goes right back to the shoe. Kind of defeats the purpose of having a return. E-mail me and I can send you picks of what I'm talking about.

Have you checked into Gorden air jet chaffer. Word is that it is far superior to air deflector

Darby, I think that's a bit of an "apples-to-oranges" comparison. The fan deflector is a modification to the fan housing to improve the air flow through both the chaffer AND the lower seive. It is meant to work with and compliment all types of sieves and chaffers. I see no reason that it shouldn't work just fine with the AirJet Chaffer. The AirJet chaffer is a high-performance chaffer designed to do a better job of keeping the light MOG suspended, even when fed the uneven air flow that is characteristic of the standard fan housing. While it may be the best option for chaffers, it seems to me that the lower sieve would still benefit from the even air flow provided by the deflector. Until we get some feedback from people who have had problems using the deflector with the AirJet (which I don't think we will) I would recommend using the two products together for highest performance. In my opinion this in not an "either_or" decision.