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Bruce:<br>
You may have hit on something, with the QC issue. The last Y.S. I
bought was about 4 years ago, (a 1.40L) and all of the Y.S. engines I
bought were Out-of-the-box deals; just open the main jet 1-1/2 turns,
start the engine, lean to ~ 1-1/4 turns out, and go fly. (Any break-in
I did was in the air. No bench time.) So, it's possible, I guess,
that the QC issue could have recently raised it's ugly head. Not
having the occasion to buy a new engine for some time, I really don't
know how the new stuff is coming out of the factory. It'll be
interesting to see how the 1.60 behaves when it does finally hit the
market. As I recall, all the Y.S. engines with the (possible)
exception of the first one, (1.20 SF) required some revising by the
factory to obtain customer satisfaction. We'll see.<br>
Bill Glaze<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:Pattrnflyr@aol.com">Pattrnflyr@aol.com</a> wrote:
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<div>I had a YS91 that ran and ran for 8 years. I had two other 91's
that didn't run no matter what. I had a 120NC that was a paper weight
at best. I had a 140FZ that ran and ran for 3 years. When you have an
airplane that is an engine specific design, you are kinda stuck. I
bought a 110, no luck. So I go to the hobby store and inspect 8 YS
110's. Some had poor feeling movement, some had gaskets bulging out
from the mating surfaces. After going through all of them I picked one
and crossed my fingers. The quality between motor number 1 and number
8 was marked. I took the motor home, the pump wasn't flush, I fixed
that. The low speed screw was out three turns, I fixed that. Then I
tighted all the bolts I could get to on the motor. I broke it in
filthy rich on 25% in the driveway. I currently have three gallons of
30% through it and it has been perfect! My point? I feel that maybe
YS has a quality control problem. I have had YS's that were great out
of the box and some that nobody, including TN, could not get to run
right. Have I found the problem? Don't know but this last excersize
seemed to work for me.</div>
<div> </div>
<div>See ya,</div>
<div> </div>
<div>Bruce</div>
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