ORIGINAL: ʯstas
Hi.
Yeah,maybe your Chinese engine works well,but...
I don't know if i will ever trust an engine like your's or gms etc.
That's because i never saw one of them running and also i think that
quality is expensive!!!
Also these manufacturers don't have the machining and maintenance as other OLD companies like OS!
But anyway the problem is the engine decision!I don't have right now the money to go with a 4str.like YS 110 FZ,but if i had them i would!The most important think that i am thinking is reliability and quality.That's y i am thinking the OS 91 FX.Because you know that this engine really works!
Oops, I just saw this post, and if you have a 91 FX that works, all the power to you. I personally have seen a club friend whose 91 FX has inconsistent behavior, despite his full devotion into tuning. There are probably some tricks into getting that engine to run right, but I don't know them.
I, however, have owned the Magnum/ASP 91 2-stroke, and I can tell you that it is worth much more than it costs. It is much more consistent and reliable than my friend's OS 91 FX, and it pulls even a little more rpm than his on the same prop, possibly due to muffler difference. I will let you know that I got mine from Bonpar on the other auction site for just over $100. Maybe OS has ironed out all the issues of 91 FX by now. I am not about to do a $200 experiment though, when Magnum is around. Yes, OS' external finish looks nicer, but it's cowled anyway, isn't it? Magnum 91 XLS is ABC, and OS 91 FX is ABN. You be the judge which will last longer.