Well from my limited experience, you can expect to up your rpm---the 12-6 pusher has less pitch (or effective pitch) than the tractor. I think that is going to be the biggest adaption you will have to make.

What Archie said!

Ok, more tension above 45 sounds good  It will be interesting to try a pusher prop.

Alan: how much did you have to increase the rpm?

/Andreas

I didn't. I took the prop off and put the tractor back on! At the time, I simply wanted to fly, and not search out a new rpm--which meant a few days of back and forth trial and error. I'll probably try again, once I get the nose of my Vector back on again! 

I think Crist has mentioned 300 rpm, but that may depend on the value you are currently using. But it is probably a good place to start.

Guys,

I have been flying the pusher for several months and I agree with Dennis A as to were you will feel the benefit. For my ship one of the first things I noticed was that on the takeoff roll it would hug the ground a little more then with the tractor prop. This seems to be due to the opposite prop swirl that tends to hit the bottom of the stab and lift it while on a tractor setup it pushes it down. The free flight guys use this effect to get their ship to roll one way under power then roll the other during glide. If you set up the stab with positive incidence you will notice it more then if it is set for zero. Also if you have your bellcrank set for front line Up the pusher negates this. If you have it set as front line down you get a benefit because the torque is opposite.

The pitch on the pusher is about 0.4" less out of the package then the tractor. When I set the pitch to the same value as my tractor the lap time was the same and so was the current draw. If you do a search on this board someone posted a pitch gauge that can be used with a Prather gauge when you reverse the gauge plate setup.

All in all the pusher give me a little more confidence on the outside corners and I like it.

Best,          Dennis T