Skip can answer this question better but until he does.... John is back home and has been for several days. He is working a little bit. From what Skip says 1/2 days. That's a long way to travel just to get hurt. I'll let Skip (or maybe John hisself) fill in the rest.
I went to the other side of the world yesterday evening and Skip, John and I enjoyed an excellent dinner.
While there I got a chance to drool over John's immaculate 1983 YZ250. He built it in record time and I was able to offer advice I had learned living with mine. John also had two "period" magazines (Dirt Bike and Motocross Action). It was interesting to learn that even back then the magazines complained about the '83 YZ250 being hard to start, something I have complained about with my '83 since I owned it! Even with the PVL it was hard to fire cold.
John is doing very well considering he broke 8 ribs on his right side. I didn't see it but he also had a huge bruise on his side. He also mentioned several vertebrae were fractured but nowhere that would cause spinal problems. He was wearing a Leatt brace and, (according to John) judging from the indentations his spine left on the brace, things may have been much, much worse without the brace. It may have saved his neck.
Skip has also obtained a 1983 YZ250. It's in the process of being restored. The left crank bearing has some play so when he's ready we'll split the cases for new seals and bearings. Hopefully John will be back soon and breaking in the YZ. I want to line up Skip's, John's and mine so we can take comparison rides and see if one bike behaves better than the others. It'll be interesting!
Unfortunately true vintage bikes (1974 back) take a toll on old bones. The only things "old" on the '83 YZ250 are conventional forks and drum brakes. Even for drums the double leading shoe front brake is very good. OK, it's not as good as my KTM disc but way better than my '73 Pursang!!
It was a shame for John to drive to California only to get hurt. We can do that in our local tracks!
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Glad to know that John is doing well. John, you have been through some tough times here lately and I wish you all the best in your recovery my friend.
As far as YZ's go...... Guy's, I strongly recommend that you obtain only NOS Yamaha parts for your rebuilds. I know it's tempting for a couple of you do not go CHEAP using aftermarket parts whatsoever. You know my bikes and the service life I get from them. There are plenty of suppliers who stock NOS parts so there is no excuse to shop else where.
As far as double-leading brake setup, there's a secret to maximize the capabilities of the system. We can do some bench racing one day and talk about it.
See you at the Parker's!