Search found 17 matches
- Wed Feb 25, 2026 9:17 am
- Forum: Post 1970 Airheads
- Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
- Replies: 28
- Views: 26466
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 ...
- Wed Feb 25, 2026 8:59 am
- Forum: Post 1970 Airheads
- Topic: Disks Dish for Narrow 2 Rib Hubs?
- Replies: 1
- Views: 592
- Wed Feb 25, 2026 12:34 am
- Forum: Post 1970 Airheads
- Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
- Replies: 28
- Views: 26466
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...
- Mon Feb 23, 2026 3:26 pm
- Forum: Post 1970 Airheads
- Topic: Camshafts. R45 cam in a R90!? 😳
- Replies: 3
- Views: 23052
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...
- Mon Feb 23, 2026 2:57 pm
- Forum: Post 1970 Airheads
- Topic: BMW touring panniers 3d key printing.
- Replies: 23
- Views: 35235
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...
- Mon Feb 23, 2026 2:03 pm
- Forum: Post 1970 Airheads
- Topic: Disks Dish for Narrow 2 Rib Hubs?
- Replies: 1
- Views: 592
Disks Dish for Narrow 2 Rib Hubs?
I have two wheels, both spoked and suitable for disks; one's a 4 rib hub, the other's a 2 rib hub. Which models used a 2 rib hub? I've read dual disk TIC models, both 80 and 100, but these appear to have originally come in black, rather than bare alloy, making me wonder if they are ST or something e...
- Mon Feb 23, 2026 1:00 pm
- Forum: Post 1970 Airheads
- Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
- Replies: 28
- Views: 26466
Re: Fork/Brake Upgrade for Early '80 R80 TIC?
The 81- forks are as Rob says very different. They are essentially the same in principle as the the forks first introduced in 78 on the R45/R65. I think you may be thinking of the Monolever forks there, i.e. when the axles were moved to the bottom of the slider, instead of using a leading axle, and...
- Tue Dec 23, 2025 2:15 am
- Forum: Post 1970 Airheads
- Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
- Replies: 28
- Views: 26466
Re: Fork/Brake Upgrade for Early '80 R80 TIC?
It's best not to copy the entirety of previous posts, Rob. Anyone reading this discussion has already read what I wrote. Just edit out the pertinent section, e.g. I can be absolutely certain that the internal components of the two different fork systems are NOT the same. I have both in the shed and ...
- Sun Dec 21, 2025 4:27 am
- Forum: Post 1970 Airheads
- Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
- Replies: 28
- Views: 26466
Re: Fork/Brake Upgrade for Early '80 R80 TIC?
It's still not really clear to me that the difference between the pre- (31 42 2 000 376) and post-09/1980 tubes (31 42 1 241 655) are. OK, thanks to Euro Moto Electrics (EME) , I've found out one possible difference. Although the basic dimensions are the same, the pre-09/1980 376 tubes have two hol...
- Sat Dec 20, 2025 1:13 pm
- Forum: Post 1970 Airheads
- Topic: Fork/Brake Upgrade for Early '80 R80 TIC?
- Replies: 28
- Views: 26466
Re: Fork/Brake Upgrade for Early '80 R80 TIC?
The fork was completely redesigned for the 1980 year ... But they weren't "completely" redesigned. The pertinent dimension remained the same, the yokes and stem remained the same, the internals remained the same ... as far as I can see, all that happened was the outside of the castings wh...