ORIGINAL: DeltaForce
Ok, I'm getting ready to make the plunge into 4 strokes, having been flying for about a year. I've had good experiences with 2 stroke OS, Webra, Thunder Tiger, MVVS. I can tune a 2 stroke, the low end and the high end quite easily.
My question is should my first 4 stroke be a YS? I crave its power and light weight but I've heard how touchy they can be. Or would Saito give me an easier time? What do you guys think?
~Deltaforce
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Actually, YS four-strokes are easy to tune when they are operating properly. When they are not operating properly, no one can tune them at all. <G>
Be warned that the regulator diaphragm and a few other parts (plunger/spring) will need to be changed out every once in a while. If it gets more involved than that, send it back for servicing. Life is too short to waste on trying to fix it yourself. There are no streaming sources of tech/update bulletins for end users. Yes, the engines are that complicated.
You should get a few months of trouble free operation that will be heaven-like in its bliss. If you truly get addicted to this much performance, do yourself a favor and buy a couple more engines. You'll have one to fly, one to build with/backup and one in transit to or from YS for maintenance. Performance costs and this is just part of the normal YS drill - if you fly a lot. I know, you'll hear from guys that fly one engine for six months to a year (how many times? - they don't say) and will swear that these engines are just as reliable as OS, etc. Baloney. I've flown YS engines, tuned YS engines for friends for over thirty years now. I'm from Missouri - show me.
I'm not downing YS one little bit. I'm just saying that flying the best comes with a price - as one would expect.
Ed Cregger