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Tapered Bearings Question
- Jordan Nygaard
- Posts: 29
- Joined: Fri Mar 10, 2006 11:47 pm
Tapered Bearings Question
Steering head bearings
- schrader7032
- Posts: 9057
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
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Tapered Bearings Question
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
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- Posts: 503
- Joined: Fri Oct 27, 2006 3:00 am
Tapered Bearings Question
The tapered bearings fit the stem of the Earles fork. The stem of the US fork is smaller and requires adapters - steel rings that fit between the stem and the bearing.
See
http://members.aol.com/VechBMW/index.html
31 42 2 000 000--$49.95--tapered roller bearing set for steering head R5-R71 R24-R69S (US fork requires two adapter rings 31 42 2 000 001).
31 42 2 000 001--$40.00--adapter for use with 31 42 2 000 000 steering head bearings for 1969 US fork two required.
The /5 fork takes something else entirely:
07 11 9 985 070--$71.00--tapered roller bearing set of 2 for steering head R50/5-R100RT
Tapered Bearings Question
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- Posts: 503
- Joined: Fri Oct 27, 2006 3:00 am
Tapered Bearings Question
Earls fork pivot bearings are different part numbers and bearing numbers than tapered steering bearings. I think they are smaller, and may be plain roller bearings - I can't remember.
Another source of bearings is Ed Korn's Cycle Works at http://www.cycleworks.net/. They will be cheaper there than any other vintage BMW vendor. The bearings are faintly electro-etched with decent brand names, and are probably made in various plants world-wide. I believe he orders them in bulk and repackages them in generic boxes. The other approach is to buy bearings engraved with brand names and numbers, in official branded boxes, which is what I think Bench Mark Works and bearing stores sell. I have used both and don't know the difference aside from cost.