Sam,
Thanks for the EVO bar info. I didn't realize there were mounts to fit the big bars on vintage bikes.
I've got a 1.6" CR250M front rim now (thanks, dogger!) which I like better than the 1.4" CR125 one; seems like the tire contact patch is a little wider and flatter.
I put in a complete Barnett clutch as you did, and the clutch slipped a little at first, was OK for a while, then started slipping again worse and worse. This was on the 175 motor. I bit the bullet and went OEM w/Barnett springs, and it's been fine ever since (3,000+ miles).
I've had a number of clutch problems over the years. I tried Mobil 1 in the gearbox once, what a mistake that was - I had to throw those plates away. I also had one set of OEM plates that just wouldn't die; I moved them from the 125 to the 175 and they continued to work well for quite a long time. I finally replaced them because I had the motor apart to install a CR primary drive, not because they were slipping. I still have them.
I mentioned using the MT125 head gasket in another thread - I've had much better luck with them than the copper ones. .030" needs to be milled off somewhere to maintain the compression; you could do it on the head (easiest), cylinder top (the best for closing up the squish clearance, in my opinion), or the cylinder base, which will alter the port timing for more of a mid-hit motor. When I revive my 125 motor in the future, this is what I'll be doing to it - I'll still have the benefits of the ported cylinder's enlarged ports and passages, but with roughly the stock port timing (all my ports were raised).
I've put the Race Tech cartridge emulators in the forks, which required machining the damper rods and using the optional spacers (you have to ask Race Tech for them). I removed the split-pin piston retainers and assembled the pistons with "permanent" Loc-Tite 262, which allowed my machinist to modify the pistons to accept the emulators without the spacers. I installed the emulators at the factory spring setting, which seems to give pretty heavy compression damping (I haven't really given the bike a good workout yet, though). I have no doubt the fork action will be greatly improved once they're dialed in.
Ray
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