Finally got my 250C back in a ridable state. We worked out it had been about 5 years since I'd ridden it last when the main bearings & rings were that worn that the motor could be turned over by hand by gripping the end of the crankshaft with the flywheel off
While the motor got a full rebuild with the cylinder being bored to 1st oversize I made a few changes both to looks of the motor & had the swingarm extended with shedworks axle plates
The axle plates extend the swingarm by 38mm or so which puts a bit more weight to the front. As it turns out even with the lengthened swingarm the wheelbase is standard which confirmed that the steering head angle had been modified, the welds are far better than normal & the front down tube are completely smooth. We stood the bike in front of a Beta Techno & the fork angle is the same which makes sense as the Techno was the current bike when the mods would have been done
The original shock mounts were deleted & a gusset fitted to help strengthen the tubes above the repositioned mounts that were done before it's last ride
I fitted a DT250C head that Ian Cameron supplied me for looks, I race a 73 CZ & owned a YZ465H when I built the motor so radial heads are my preference. The combustion chamber is meant to measure the same. There was minor grinding of a couple of fins to clear the exhaust & I cut about 10mm from the rear to match it to the cylinder
An electrexworld ignition is fitted now with the band removed from the flywheel, I had to put marks on the flywheel & stator plate for timing while the head was off. Unfortunately we didn't get a chance to strobe the timing as per the fitting instructions & had to run it set at the middle of the slots but it seems to work well
I'll see what other detail photos I have & try to put them up at some stage
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