Search found 146 matches

by Beemer100
Thu Mar 18, 2021 5:37 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Correct carbs for 1959 R69
Replies: 13
Views: 440

Re: Correct carbs for 1959 R69

I think that the 9/10 combination was the original carb set for the R69. I have an all original R69 in my garage which was build in the last months of the production line, and she has the 9/10 carb set. I think the list was written at a later date so it also includes replacement carbs in case you go...
by Beemer100
Fri Mar 05, 2021 2:42 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Determine final drive gear ratio without disassembly
Replies: 4
Views: 525

Re: Determine final drive gear ratio without disassembly

Huntmiller, The counting is easier for the R51 and R67 due to the open shaft drive. For the swing arm models it’s a bit more trickier. Check out the rubber collar at the gearbox output shaft. You can feel the coupling flange and more importantly, you can feel the boltheads of the 4 bolts which conne...
by Beemer100
Fri Jan 22, 2021 10:23 am
Forum: Vintage (1948-1969) Motorcycles
Topic: sidecar attachment
Replies: 6
Views: 602

Re: sidecar attachment

Hi Slobell, I'm afraid, without pictures there is a bit of guesswork going on here. I have 3 old BMW with sidecar and all of them have a rock solid connection. The Ball joints tighten up just right and then the 2 braces to the front and under the saddle stabilize the connection. There should not be ...
by Beemer100
Sat Jan 16, 2021 6:00 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Battery Drain
Replies: 13
Views: 772

Re: Battery Drain

6,18 is indeed a little on the low side. However, you still should see the brake light. Are you sure the rear/brake light unit is for 6V? I know, stupid comment but still worth to check. These generators were not meant to supply the bike with permanent driving light. Remember these bikes were built ...
by Beemer100
Wed Dec 30, 2020 10:31 am
Forum: Vintage (1948-1969) Motorcycles
Topic: So where do you live and ride?
Replies: 41
Views: 5666

Re: So where do you live and ride?

I’m riding on both sides of the pond. In good ol’ upper Bavaria right between Munich and Salzburg where the alps start to build up but also in the hilly eastern townships of Montreal, Quebec during spring and fall. In Bavaria I mostly use my R75 sidecar rig and for solo either my R67 or my R69 ... t...
by Beemer100
Sun Nov 15, 2020 4:34 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Removing carb - 69S
Replies: 4
Views: 519

Re: Removing carb - 69S

warming up the inner rubber ring at the carb side makes it easier to wiggle the tube off the carb end.
by Beemer100
Sat Nov 14, 2020 9:53 am
Forum: Vintage (1948-1969) Motorcycles
Topic: R51/3 – correct way of assemble the drive shaft
Replies: 4
Views: 559

Re: R51/3 – correct way of assemble the drive shaft

Micha,

before you make your own pin, check the old one. The flat side has a subtle slope ... hardly visible. And, no Loctite needed The pin will hold the crown nut in place

Klaus
by Beemer100
Fri Nov 13, 2020 2:09 am
Forum: Vintage (1948-1969) Motorcycles
Topic: R51/3 – correct way of assemble the drive shaft
Replies: 4
Views: 559

Re: R51/3 – correct way of assemble the drive shaft

Micha, you nailed it. First attach the drive shaft to the rear drive (don't forget to apply some heavy grease like Staburags). However, you need to make sure you shim it correctly. That is a bit of a trial and error process. You will see that the pin and the hole where the pin goes through is design...
by Beemer100
Fri Sep 18, 2020 4:28 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Sluggish Acceleration R50 -SOLVED!
Replies: 12
Views: 1336

Re: Sluggish Acceleration R50 -SOLVED!

thanks for sharing the solution. That's what makes this forum so great!!
by Beemer100
Mon Sep 14, 2020 3:57 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Sluggish Acceleration R50 -SOLVED!
Replies: 12
Views: 1336

Re: Sluggish Acceleration R50

ignition seems to be ok. Did you also check and adjust the valves ... all good on that front? With regards to the carbs ... idling and not accelerating beyond 2500rpm are two very different circuits within the carb system and yes, I agree with S.R. ... what do you mean with 4rpm ... sounds veeeeery ...