Gee, One goes away for a few days & the thread lights up again. Good stuff!
VMX60 has shown the forum what I discovered when I pored over the 250MX model in Nth Qld for a couple of hours - that the 'workmanship' was VERY poor. I could give you many more examples of it. The frames were modified in Oz (to take the Ossa engine), not at the Sprite factory so the blame is all RL's. He just didn't have a clue. In many ways, it seems to me, thats the story of Alron
Its about 99% certain VMX60's bike is Mitch's bike, & almost as certain it was one of the 1st 3 250 Sprite-Alron "development bikes", possibly the 1st. It is a little different to the 'production' 250 Alrons, which aren't quite as rough as guts, but still very agricultural - so much so that (as I posted before) one can't believe they would sell themselves on the showroom floor, or have sold as many as RL claimed.
The (lack of) workmanship is a serious embarrassment to any self-respecting Aussie - barely even in the "backyard mechanic" category. And its not just the engine mounts, believe me.
It seems to me they had no jig to reconfigure the engine mounts for the Ossa engine, so you can imagine how they turned out. Ea one seems a little diff.
Yes the prod'n bikes had considerable engine offset to the left, just like VMX's bike, but w'out the sideways tilt. I have no doubts that bike could have run for ages w that tilt (which is more like a few degrees, rather than 5-10deg) if the top of the chain run aligned & it had a chain guide on the bottom run, as there's always a fair bit of slop in the chain & sprockets. But that in NO WAY condones it. It's disgraceful! No doubt the wear would have been (considerably) higher than normal too.
The blue bike appears from pics to have been better built, but there are several poor designs on it too.
The Alron's I am currently aware of still in existence are:
3 250 Sprite-Alrons (1 MX, 2 enduros),
2 restored 400's,
1 amost complete 400 (in quite good unrestored condition)
1 incomplete 400 in poor condition
1 400 roller
& 2 other 'possibilities' (400's) that I haven't yet heard confirmed (including the Illawarra one mentioned above).
I am still trying to track down RL so pls be patient. One contact tho't he had died, but I'm not convinced (his wife & brother-in-law have died). Also still trying to identify the "aircraft fitter from Jandacot airport". I believe he did exist.