Search found 2013 matches

by Darryl.Richman
Fri Sep 11, 2020 9:48 am
Forum: Antique (1923-1945) Motorcycles
Topic: Advance timing cable hookup - r11/r12
Replies: 4
Views: 661

Re: Advance timing cable hookup - r11/r12

dBDawg, is your bike an R12 or a chain driven magneto R11? It looks to me like you have a magneto that is set up for gear drive. Your advance cable is mounted on the left side, not on the right side like pkrpkr's magneto. These magnetos are very modular and can run in either direction, and with a va...
by Darryl.Richman
Fri Sep 11, 2020 9:38 am
Forum: Antique (1923-1945) Motorcycles
Topic: For which bike are these cylinders?
Replies: 2
Views: 328

Re: For which bike are these cylinders?

Because of the 6 crankcase mounting bolt holes and the shape of the cutout over the valve area, these are for the side valves in the models from 1937-1942. That includes the R71, R61 and R6. But only the R6 https://vintagebmw.org/model-lookup/?shownode=6337 and R61 https://vintagebmw.org/model-looku...
by Darryl.Richman
Mon Aug 10, 2020 8:29 pm
Forum: Antique (1923-1945) Motorcycles
Topic: BMW or Chinese Knockoff
Replies: 4
Views: 724

Re: BMW or Chinese Knockoff

It's unlikely to be a copy. If your customer had an R71, then you would be right to be worried about a copy. With an R12, BMW made a ton of them, but they were for the war effort (there are prewar civilian bikes, but they're a small minority). The bikes went through the meat grinder of the war on th...
by Darryl.Richman
Fri Jul 03, 2020 9:44 pm
Forum: Antique (1923-1945) Motorcycles
Topic: R42 Pistons
Replies: 3
Views: 732

Re: R42 Pistons

My machinist ordered them and matched a new bore to them. I actually have a second set of cylinders bored exactly the same, so I can swap them with new pistons if I ever need to. The bore is well over the original 63mm, but I've put about 10k miles on them and had no troubles. I was signed up to go ...
by Darryl.Richman
Sun Jun 28, 2020 11:53 am
Forum: Antique (1923-1945) Motorcycles
Topic: R42 Pistons
Replies: 3
Views: 732

Re: R42 Pistons

That's beautiful, Lee!

I've had pistons made for my R52, that I've ridden 3 times in the Cannonball. I got them from JE Pistons:
https://www.jepistons.com

I had to buy them in a set of 4, so I have a couple spares.
by Darryl.Richman
Mon Jan 27, 2020 8:33 am
Forum: Vintage (1948-1969) Motorcycles
Topic: R51/3: Camshaft front bearing extracting - Help needed. Pictures inside.
Replies: 15
Views: 784

Copyright

We have had a complaint from the copyright owner, and I have removed the scans uploaded here from the copyrighted book. The club cannot be complicit in allowing copyrighted material to remain on the site, once we become aware of it.
by Darryl.Richman
Sun Aug 19, 2018 9:06 am
Forum: Classic (1970-25 years ago) Motorcycles
Topic: I can´t believe my R100GS/PD is already 25 years old! Throttle service.
Replies: 0
Views: 380

I can´t believe my R100GS/PD is already 25 years old! Throttle service.

I decided to service the throttle, it was no longer returning to idle. I´m sure there is a better way of doing this, you must always take your bike to a professional for any repairs. I have hand guards, this need to come out. https://farm2.staticflickr.com/1818/43998435111_c1347e635b.jpg https://far...
by Darryl.Richman
Sun Aug 19, 2018 12:54 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Restoration - which work to do, which work to contract out
Replies: 0
Views: 324

Restoration - which work to do, which work to contract out

A recent post by acerynes shows his beautifully restored R69s - wow is all I can say about it. So I went on to acerynes site and he shows the bike as he first got it - so close to a full basket case - pretty daunting to say the least. There I was thinking how much work will I do on my restoration an...
by Darryl.Richman
Wed Jan 24, 2018 9:48 am
Forum: Tools, Tips and Techniques
Topic: Bmw r68
Replies: 2
Views: 229

Bmw r68

Hello Having fully reconditioned my bmw r68 my bike will not starting,it did on the first kick one cylinder worked left side heat up quite a lot, right cylinder did not start up.ran for about 40 seconds and stalled didn't start again until the next day again same problem.engine air breather in front...
by Darryl.Richman
Sun Jan 14, 2018 11:24 am
Forum: Antique (1923-1945) Motorcycles
Topic: R12 valve adjustment
Replies: 9
Views: 602

As Bruce says, you can buy

As Bruce says, you can buy "spindle" or "hub" wrenches at a bicycle shop. They are stamped steel, but strong enough to lock the adjustment. You will have to grind material off them before they will fit, and you can bend them with a propane torch and a vise or vise grips. As everyone here has confirm...