Search found 22 matches

by Todd
Tue Mar 24, 2026 12:21 am
Forum: Post 1970 Airheads
Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
Replies: 35
Views: 36599

Re: Fork/Brake Upgrade for Early '80 R80 TIC?

I forget ... did we work out whether the ultimate manner of holding together the two fork styles, i.e. ATE and Brembo, were similar? Putting aside the minor changes in the stanchions and dampers, is the Allen bolt at the bottom of the Brembos the same diameter as the internal threaded part of the AT...
by Todd
Tue Mar 24, 2026 12:02 am
Forum: Post 1970 Airheads
Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
Replies: 35
Views: 36599

Re: Fork/Brake Upgrade for Early '80 R80 TIC?

Seems I can only upload 3 images at a time. Here's the threaded 4 rib hub, an unthreaded two rib hub which came with a 19" rim, and an unthreaded three rib hub which, allegedly, is unique to R80ST. May be the two rib hub is unique to TIC models with Brembo brakes? (I don't know, no fiche, no ma...
by Todd
Mon Mar 23, 2026 11:12 pm
Forum: Post 1970 Airheads
Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
Replies: 35
Views: 36599

Re: Fork/Brake Upgrade for Early '80 R80 TIC?

I'm not familiar with the spoked wheels in any great detail. It might be best to identify the part by posting a parts fiche diagram. What they call the "knurled nuts" (KN) are really just chrome caps that fit on the outside of the dust seal in hub. The drawings show them ... but don't sho...
by Todd
Mon Mar 23, 2026 10:57 pm
Forum: Post 1970 Airheads
Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
Replies: 35
Views: 36599

Re: Fork/Brake Upgrade for Early '80 R80 TIC?

The only parts manuals issued by BMW are the parts fiches and the MaxBMW/RealOEM parts lists are nothing more or less than direct copies of that Yeah, I don't know what's gone wrong in that department but they are 'way' wrong in these departments ... and I suspect others that I haven't discovered y...
by Todd
Sat Mar 21, 2026 11:30 pm
Forum: Post 1970 Airheads
Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
Replies: 35
Views: 36599

Re: Fork/Brake Upgrade for Early '80 R80 TIC?

the internal damping mechanism was changed quite significantly (and not for the better) to a design that was first use in R45/R65's in 1978. Thanks ... sorry, I've been offline but still plugging away at this problem. One thing that this experience has underlined ... is that all the online parts fi...
by Todd
Wed Feb 25, 2026 9:17 am
Forum: Post 1970 Airheads
Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
Replies: 35
Views: 36599

Re: Fork/Brake Upgrade for Early '80 R80 TIC?

They redesigned the frame without greatly changing the dimensions, and used front suspension components, wheels & etc. based on those used for the early 'K' series. Some of the innovations had been first seen on the R45/R65 range. Presumably to 'de-rubberise' the old frames a bit? It seems the ...
by Todd
Wed Feb 25, 2026 12:34 am
Forum: Post 1970 Airheads
Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
Replies: 35
Views: 36599

Re: Fork/Brake Upgrade for Early '80 R80 TIC?

I'm certainly not thinking of the Mono legs... You weren't, but barryh mentioned the R45/R65 fork which looks like the R80/R100 monolever fork (1985/1986), i.e. axle directly at the bottom of the slider. You and I are discussing the 1981 to 1984 twin shock/Brembo forks. Incidentally, why did BM cha...
by Todd
Mon Feb 23, 2026 3:26 pm
Forum: Post 1970 Airheads
Topic: Camshafts. R45 cam in a R90!? 😳
Replies: 3
Views: 25608

Re: Camshafts. R45 cam in a R90!? 😳

Can you put a r45 cam in a 247 engine? Hi, I'll be the first to admit that I am new to BMs and know nothing about them ... but reading up on them, I am really surprised at how limited or backwards the choice of alternative valve train components is, and also the general awareness of how many opport...
by Todd
Mon Feb 23, 2026 2:57 pm
Forum: Post 1970 Airheads
Topic: BMW touring panniers 3d key printing.
Replies: 23
Views: 44983

Re: BMW touring panniers 3d key printing.

Echoes of Brexit I presume.... I find a lot of European retailers, across a number of product ranges, won't touch the UK any more; and those who do want (or need) to charge a £140 minimum due to the paperwork involved. Something to do with a £135 threshold for VAT payable on the goods plus duty and...