G'day

I stopped using two strokes for two reasons. Noise and the fact that the four strokes are EASIER to use.

Four strokes are not difficult to get along with. I use 10% fuel with 5% castor, 15% synthetic and 70% methanol which is relatively cheap and produces plenty of power. My Laser four strokes run happily with no nitro and 16% oil.

You do need to spend a little time running them in to get the ring to bed but the whole process can be done in about 40 minutes. I spend 20 minutes on the ground and do the rest with the engine set a bit rich in the air. The Magnum 52 you are looking at would be a great engine in a Kadet.

If you do buy a Magnum (or ASP - they are essentially the same and come out of the same factory) do use a small amount of castor with them. It helps with the running in and is great protection against a lean run and rust.

Four strokes react more slowly to needle changes. You just have to change the needle slowly and wait until the change becomes evident. If you have a musical ear, then tuning is very easy. If you don't, then using a tacho will help a lot. This applies to two strokes too.

My friends who fly two strokes are forever having dead sticks. Especially the cheap Chinese ones - the OS are better. I never have dead sticks unless I want to or get so carried away that I run out of fuel and this is rare. The one plane that I have that does run out of fuel (as its tank is really too small and I can't be bothered changing it) gives warnings by missing a few beats so as soon as I hear that, I set up to land.

And four strokes just sound better especially in a slow flying model like the Kadet.