Someone with YS or someone that really knows what they are doing needs to make a video of a YS engine tune and post it here. Have the engine out of tune due to different reasons, then show it being tuned. I would like to see it done for a 1.10 since most of the post are issues with it. There are a few videos on you tube, but the engines are in tune to start with. It would really help to see and hear how to tune these wonderfull pain in the butt engines.

I agree! That would be awesome! Show what that regulator does when it's out of tune, the low speed when it's lean or rich, or mid range when the engine surges, etc. I'd do it if I had more experience. I can show you how to mess up a good tuned engine and not get it back into tune and mess it up even more.

Maybe you could try calling or emailing YS parts and service and ask them?

The problem is, no one will deliberatly run a YS out of tune for fear of doing damage, unless you are willing to pay for such damage.

Or maybe if a few of you got together and established some sort of fund so a YS can be destroyed in making a video,
then I would geuss a few would put up their hand to make such a video.

Xmans

I think if you set the motor out of tune by making it very rich on the idle; then adjust it properly. Again you could the same for the top end (making it rich) then adjusting it.

I can understand making the motor too lean and how that can damage it; however, when a new YS is broken in it is run rich and tuned for performance after it's broken in. I think a video could be made without any issues.

Regards,

YS Service gets engines everyday that are out of tune. They would be the best to do it. Maybe get Troy Newman to work with them. Too bad YS service does not answer email. I'll hit Troy up with the idea.

YA know... I agree... a video would be MOST helpul

Everybody talks about the "transition"... well... after about a gallon of fuel from monkeying around with a motor that wasn't set right.... I got it right.. I think...

But... these engines are so different from anything else (except MAYBE my 350 hp rotary mazda) that tuning them by reading a set of instructions can be a stressfull experience... especially when no one else at your fild has one, and the only one that did gave up on it and sold it years ago cause he refused to use a tach to tune it..

Actually SEEING and HEARING what is going on at the trasition and SEEING and HEARing the results once the regulator is set perfect would make one heck of a difference in the learning curve...

the only reason I didn't ditch my YS FZ110 after the first half gallon of fuel and the is that I love the technical aspect of this sport... for me, tinkering around is more than half the fun.