G'day

A long time ago I built a GP PT 40 as my second plane. It was a straight forward build and it flew well as a trainer but my instructor hated it because it was a trainer. (He was a bit strange.). My son also learned to fly on it. I like the PT-40 and I think it is a good choice.

Our PT 40 had a plain bearing Thunder Tiger GP 40 in it but the Super Tigre 40 should also be nice. We have been using one here recently and it is a very sweet running engine. It is also quite powerful and more than enough for the PT-40.

When you get the engine, buy a couple of spare glow plugs. I did find that the original Super Tigre plugs did not last very long after running in with several Super Tigre engines. Also, the GS40 engine is a ringed engine. It will benefit from short runs initially and with plenty of oil and with the mixture set rich. You can gradually lean it out over the first hour of its running. Some castor oil in the fuel will help too and it does not need large amounts of nitro. 10% is more than necessary.

And enjoy. I am sure you will.

Mike in Oz