copemech

I think there are several things to consider on bikes. Firstly, on a Sherco, the alcohol does seem to take advantage of the permeability of the nylon tank and make it expand to possibly a unusable size. I have seen mine grow to near 10mm on length, not sure the girth, but a tight fit! Seen it return to normal as well, using the real gas. The car gas in US, rated by R+M/2 method being around 93 for premium would still be near the euro method using a single rating of 98 octane(knock resistance) It will run and work fine in the motor, if kept fresh, as it does not store well and the alcohol is hygroscopic up to its absorption capacity, which can vary and result in water fallout. The high aeromatics in car gas go off rather quickly it seems, and as example, my Yam will not even start if left set for two weeks with fuel in the bowl. 100LL seems to store well for months on end with no issues. I have found it can cause some problems here in high temp environment as it does not like hot restarts(vaporlock) as the stuff is blended to work better in cooler environment at altitude, this is understandable. As far as power goes, a quicker burning fuel(lower octane) may well develop more power in a motor not designed for the high octane fuel, blessing or curse, as smoother power has its advantage as well? Not a lot of difference really, possibly some.

Long story made short, if you have checked the basics and still no spark, ring up Splatshop if you are in UK, he can usually send you the necessary parts to try and you may return the unused parts. Best I recall the "11 bike 290 still used the Leonelli ignition with the combined coil/ cdi unit, as compared to separate units on later bikes and different system. I would start there, then progress to the stator. Not pos on yours. Yet these are still easiest to change. Water in itself cannot be good for a stator, however I have seen the covers half full because no one ever cheched them and the bike still ran. The key components being the hall sensors can fail, yet they are potted in well so water has little effect(in a perfect world).

Dr, I has a prollum wit me spillin.

Charlie, I have never had to change jetting for 100LL if the bike was jetted properly to begin with and the fuel screw was in range. On a dellorto, that would likely mean at least a 36 pilot. 0007, Trying to get non-alcohol induced fuel! Unless one lives in remote rural areas, it is near impossible! It has its advantages and disadvantages best I can figure.

As Glenn stated, yet I have found in the past I can CHEAT by bending the B3#tards!

Neo, Well, I found a 250 after the "07 2.9, and I like it well enough. Still on the Dellorto, as it works. The bikes are different with the orientation of everything, and I cannot say that Anything can improve My riding, yet the suspension stock is more supple with the Tech forks, and others have stated that even with the stock shock it may rival the Ohlins or TRP on the rear as compared to the older bike.. Bike seems well balanced F/R and a bit more like a Gasser in the rear, which has taken some getting used to for me, yet very plush it seems. I have not been doing comps, so mostly just me freeriding, and that is all I can tell you.

Have you considered a 320 Sherco? Alot less work and does not look like a dog with its tail kicked!

Neo, I traded up to a "12 model, and like it! Suspension is different, and very nice. I can live with it for a while!

Very likely! If your Buterator is Carbodinkibg correctly!

The examples pictured do reflect what I was trying to get across, notice nothing is welded to frame, all bolt on bracketry. no clamp on brackets used, however on different bikes that may still be an option. Don't look too bad either. Good welder can make MIG look better even, takes practice though!

As I recall, older shercos came with a gasket on the petcock. Might try combining the two to get a good seal if you can find the gasket. Other thoughts include trying a good RTV sealer like three-bond. I think it is fuel resistant, however it is not alcohol resistant, so must cut the alcohol out of the fuel. I do not know if it is possible to find or make a thicker seal ring of square profile that may work.

Get a Sherco and you are fixed!

Actually seen the clip posted on the MSN today! Chuckles still!

Good to hear from you Dr Neo! You prolly need one, you know!

Yea, I think you are pretty safe to toss the switch, I did!

Did you know HE was the first to have a 305 Sherco? This goes back to years of development!

Well, that is good to hear then. The Dellorto is only SOO good, not fuel injection, you know. Might run it a bit lean for smoothness, as one seldom wicks them wide open like that for normal riding anyway, just find a happy spot. Open it a bit more in cool weather. I just works!

Yup! Need to get the stickers separate though. And heat shield!

Now That is funny! Specially when he falls over!

A virtual plethora of knowledge waiting to spew furth! Welcome Back Borus!

Yes!

Nothing like natural talent!!!

Long story made short, the bikes will run ok on the 33 pilot, and Leaner is Smoother, yet you may not achieve the other desired traits. Beyond 3.5 turns out seems little difference, as the jet is maxed out anyway, you may try to lean the 36 down to 2.5-3.5 turn range, or whatever level you can accept as idle may get a bit floaty, got to find happy spot! Just how often DO you wick it wide open while riding, prolly not at all normally! I run a 38 jet(on our fuel) at around 2.0-2.5 turns out(as lean as possible), stops the pinking as well, yet it is more sensitive on the day. Not too poppy, yet that is what clutches are for!

Jeez man, these guys are good! And I thought you were RIDING a CZ in the trial when I seen the post!!!!!

I will open a can of worms here and tell you I think you guys are NUTS! Fun is fun, and all that, but it has allways seemed to me the majority of riders who ride the Nationals are just Hard Core riders with enough time and money to pursue the trek around the BIG country! Good luck with all that, as I have never had the lux of skill, money or time to do it! And I am referring to Support Class here, as the Pros get there anyway. $50 K annually, yea right! You are committed! Or need to be!