AJS 250 pre war crank inspection and checking for runout before and after stripping and reassembling

I have a pre war AJS engine in to assemble and making sure the crank assembly is up to the job is a good place to start, and the only way to be certain is to get a look at the crankpin and big end components which in turn means the flywheels need to be split and then reassembled and trued. These should be well up to the job, as it happens.

[whalesong]

Interesting to see this, I had a later G2CS, '60 vintage, and the crank looked very similar. Had lots of crankpin breakage issues and eventually parted the bike out and moved on to other brands. The bike handled beautifully, I was successful in scrambles with it for it's brief career staying together.

[rider]

I just got to the rod on my 441 and after 120 000 miles and 25 year the up down play on big end is loose now. I really pinned the bike a lot though, now glad I have a nice stock big end all ready to go in. Interesting the clutch side on this 250 has less run out. Seems that side would be more prone to stress deflection.

[allsearpw]

Hi, nice to see old school bits and pieces being check out and get to live another day . Great work . How did the Enfield fuel tank give up it, s problems ? .All ways interesting to watch .

[philmuskett]

What's the thinking behind the twin exhausts on a single cylinder bike? Seen it a few times on older bikes?