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I need information help from Vintage BMW experts.
$5000 generally speaking
I need information help from Vintage BMW experts.
I was searching Google the other day, and found the name R60 as well but I had to be sure.
Oh, if I may ask, what is the difference between the R60/2 and R60US?
Thanks again!
- Darryl.Richman
- Posts: 2138
- Joined: Fri Oct 27, 2006 3:00 am
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I need information help from Vintage BMW experts.
The R60US, poduced in 1968 and 1969, has conventional telescopic forks.
The Earles forks have a number of advantages: they are robust, and so they are particularly good if you want to mount a sidecar (in fact, BMW did not put sidecar mounting lugs on the US models because they felt the telescopic forks were not up to it).
For the period, mounting real shock absorbers gave a much more controlled ride than was available with the primitive telescopics.
Telescopics also have the property that, under heavy braking, they shorten dramatically as they telescope. This shortens the effective wheelbase of the bike and its "trail" or "caster", and steepens the effective steering head angle. These changes make a bike much more "twitchy". The Earles design can be engineered to have any amount of fork "dive" desired, including zero and even negative values. BMW's implementation has a slight negative value and so the /2 bikes actually rise slightly under braking. This keeps the bike's neutral steering and allows heavier use of the front brake.
The knock on the Earles fork is that it is much heavier than a telescopic; it doesn't turn as quickly and requires more effort. It also inherently has much more unsprung weight, the inertia of which keeps the front tire from following road irregularities as closely as a telescopic fork bike. And because it doesn't respond so acutely as the telescopics do, riders used to telescopics say that the Earles doesn't supply any feedback about their braking.
Although BMW invented the modern form of the telescopic forks in 1935 with the introduction of the R12 model, they have constantly been developing solutions that may be better. Although BMW went back to conventional telescopics in 1968, when they came out with the "Oilhead" series in 1993, it had a new fork design, the "Telelever", which includes a light A-arm, and has characteristics similar to what the Earles provided, with much less unsprung weight. And as if that wasn't enough, when they introduced the K1200 models, they came with yet another fork design, the "Duolever", that doesn't have telescoping fork legs at all.
I need information help from Vintage BMW experts.
Oh, if I may ask, what is the difference between the R60/2 and R60US?
Click on:
http://bmwdean.com/slash2.htm
Friend of the Marque, Co-Founder VBMWMO (1972)
http://bmwdean.com --- http://bmwdean.com/slash2.htm[/h3]
[img]http://bmwdean.com/r75-200.jpg[/img]
- Bruce Frey
- Posts: 536
- Joined: Fri Oct 27, 2006 3:00 am
Re: $5000 generally speaking
.....or roll back the clock 5 or so years.
Bruce
I need information help from Vintage BMW experts.
Thank you so much once again, may you all be blessed with great bikes
I need information help from Vintage BMW experts.
What I need your help with is:
He is a "poor" guy, so to speak, so the bike is maintained mostly out of his love for it (i.e perhaps he couldn't replace missing parts with original, expensive parts; but it is clean, working well, etc.). I'm not familiar with how much maintaining such a bike would cost, but I'm sure that you would. The question is, knowing his monetary limitation for maintenance, which bike model would be appropriate for him to have, if (for plot reasons) the bike finally end up being sold for about $5000?
The initial script called for a 1966 BMW R69S but a quick search online revealed that this model are far more pricey.
I thank you all in advance.