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Search found 8030 matches

by schrader7032
Tue Aug 16, 2022 5:54 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Suggestion's for R69s tires
Replies: 13
Views: 133

Re: Suggestion's for R69s tires

Kurt, I just read the service bulletins and it is very questionable on why they made the change. One bulletin says they are for sidecar and the other says it's for "higher speed". Read the bulletins below. See: https://vintagebmw.org/library_data/249.pdf https://vintagebmw.org/library_data/261.pdf ...
by schrader7032
Tue Aug 16, 2022 5:47 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Suggestion's for R69s tires
Replies: 13
Views: 133

Re: Suggestion's for R69s tires

For a short period of time, I tried a 3.50 on the rear of my R69S. I don't have a lot in my notes, but changed to the 4.00. Likely did that because of the service bulletin...maybe even saw it in Roland's book. I must have a pansy ass because I saw no difference in handling, performance, etc. I agree...
by schrader7032
Tue Aug 16, 2022 5:17 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Suggestion's for R69s tires
Replies: 13
Views: 133

Re: Suggestion's for R69s tires

Same size front and rear is a must. James - I never understood that. How is a "must"? BMW indicated that with a change in the final drive, a larger tire should be fitted. If you don't use the "right" tire, then I guess the speedometer will have some error in it. Just curious as to how important thi...
by schrader7032
Tue Aug 16, 2022 6:18 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Suggestion's for R69s tires
Replies: 13
Views: 133

Re: Suggestion's for R69s tires

I run a 4.00 on the rear of my late R69S. BMW introduced a new rear end drive 27/8 so they recommended that the taller rear tire be used. I've not noticed any issues with handling or use of center stand with the taller tire.

http://www.beemergarage.com/documents/267.pdf
by schrader7032
Sun Aug 14, 2022 4:25 pm
Forum: Classic (1970-25 years ago) Motorcycles
Topic: Valve lifters and cam alignment
Replies: 4
Views: 57

Re: Valve lifters and cam alignment

From what I remember, the offset is to promote rotation of the lifter.
by schrader7032
Sun Aug 14, 2022 1:46 pm
Forum: Classic (1970-25 years ago) Motorcycles
Topic: /5 side panel question
Replies: 1
Views: 37

Re: /5 side panel question

Ian Falloon says that the '70 and '71 models didn't have side covers. Then it says that the '72 models had the chrome panels. Then in '73 the side panels came painted either black or blue...suggests they were optional. In the Schwietzer book, it says that that the chromed panels were introduced in t...
by schrader7032
Wed Aug 10, 2022 7:24 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: R69s or r50/2?
Replies: 14
Views: 437

Re: R69s or r50/2?

Again, I'm sure others have a wider range of experience then I. I would think that the R69S is more collectible as there were fewer of them made over the years (I think that's right). The R69S being a higher compression engine will behave that way and might take a bit more TLC. The R50/2 is more sed...
by schrader7032
Wed Aug 10, 2022 7:07 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: R69s or r50/2?
Replies: 14
Views: 437

Re: R69s or r50/2?

Welcome to the forum! Well you've picked the opposite ends of the spectrum for /2 bikes. The R69S is the sportier version and has a lot (relatively speaking) horsepower. The R50/2 is down on that horsepower but has a milder nature. The R50/2 could be considered a little suspect when it comes to keep...