Boxerworks.com

JohnT wrote: ↑Sat Dec 27, 2025 7:10 amWho is Duane?

Duane was a pioneer with his BMW shop on the west coast. He was quite the hands-on guy and had good people around him at his dealership.

https://w6rec.com/me/

Kurt

Duane is usually good describing these things...but I don't see any mention of an eccentric:

https://w6rec.com/5-front-drum-brake-ad ... nd-repair/

Kurt

I think it is a Wixom fairing, although I can't find any catalogs. Post #12 on this page is basically it, and in reading the context on the page, it suggests that is is a Wixom. https://forums.bmwmoa.org/threads/wixom-fairing.44313/ Hard to find any images with attachments visible. But if it's like ...

Can you tell us more about your center stand? When it's on the center stand, is the front tire in the air by say 2 inches or so? If not, then likely the stand has been abused over the years and it is going too far over center.

Kurt

Not as well arranged, but Duane has some on his site:

https://w6rec.com/service-bulletins/

Also, pre 1970 service bulletins are here:

https://beemergarage.com/

Kurt

I did a reverse image search and found that the Felber sidecar is sort of close.

Kurt

I'm not sure that it works that way just dividing the ratios...never really thought about that. Another thing is that you're running 3.5x18 tires. My R69S also with a 27/8 final drive is using a 4.00x18 tire in the back and has a 1.2 ratio...speeds seem to be fine. There was a service bulletin sugge...

Does the speedometer measure KPH? If so, then the 0.75 number is correct. However, the compatible rear drive should be 25/8. I think the stock drive is indeed 27/8 but is usually with an MPH speedo with the small number like 1.2. Is it possible that either the drive or the speedometer has been chang...

What final drive do you have fitted...what are the numbers stamped into the top of the drive? Also, what is the small number on the speedometer face? It must be a proper match to the final drive ratio.

Kurt

I'd run closer to that 1200 IMO. How many miles on the /7 engine? Maybe pulling in the clutch is putting pressure on the end of the crankshaft, causing drag some. Worm out main bearings?

Kurt