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bmw-mono-club· members of the bmw-mono-club are interested in the single cilinder BMW motorbike
Hello I'm restoring a 1966 R27 with steel rims. I originally thought the rims were chrome, and was starting to take them apart to have them redone. But now...
Hi Jim, My R 27 rims were painted in grey silver, about the same colour you find today for cars rims (scratch resistant silver). I never heard about chromed...
Hello Jim, They were painted 'ALUMINUM' using old technology automotive finish. I have a pair I repainted. They can also be powder coated after media blasting....
... I have never heard of any R27 rims except chrome plated steel, or alloy. In fact I have never heard of any factory 1960s factory rims other than these, for...
Very interesting. My R 27 was original as I bought it in 1979, and its only proprietor hadn't altered anything, as far as I know. Its rims were as I described...
Hullo, I've finally quit riding my rusty old 25/3 to get some paint on it and do the slingers et al. Have the frame totally clear except the silly brake...
Hello Chuck, The pedal is screwed onto the pivot axle that goes through the frame. Replacements are available. The bell crank is pressed on to a tapered spline...
... Perhaps between 1966 and 1979, your chromed rims rusted, the chrome was removed, and a paint finish was applied. (Paint cannot be applied over chrome.) ...
Will a compression test tell you when you need to bore out the cylinder and put in a over sized piston and new rings? What should the compression on a R27 be?...
Allan, The factory made the R27 available with three different wheel rim combinations: Aluminum Alloy; Chrome over steel; Silver Grey Paint over steel. I...
What about the valves guides? If there is too much gap between the valve shaft and the guide, it will smoke becasue of the admission valve. Check for the...
Hi A compression test will give you an indication but low compression could be the rings. Do the compression test and if low put a couple of squirts of engine...
This confirms what I knew about my bike. It was almost perfect when I bought it, so, why should (only) the rims have rusted? It doesn't match with the bike. ...
Richard and Allen, I thind the answer would be different customer markets. Remember BMW sent bikes with different seats and handlebars to US market than what...
throttle roll on smoke is the rings. Throttle roll off is the valves/guides. Marcus ... __________________________________________ Yahoo! DSL – Something to...
Hello Scotty, Compression tests will tell you at least two things: Compression ring condition and valve seat condition. It won't tell you what your valve...
My r27 is original and born an ozzie. It has alloy rims, the type with the radial lip. Bruce Reeves Armidale NSW R100 GSPD 1992 R75/6 & DJP Sidecar 1975 -...
Hello, It sounds pretty much like the difference is with destination country. After working/seeing quite a few later pre-'70 BMWs in the USA (Earles forks...
3308
Barry Watts
barryrw.kernow@...
Jan 5, 2006 12:35 am
Reflecting about the painted' finish on those rims. In the 1945/1950's chrome was very expensive and the materials scarce. Most metal bashing factories in the...
For the steering damper head, the material is zinc (easy to cast and quite "resistant"). Cooper plating before chrome plating is common, and more, there is a ...
... I think they were all choices in the European market, with paint the cheapest and alloy the most expensive. For R27s destined for export to the US, the...
Hello all, My R26 speedometer is waiting at Palo Alto for a ratio sheet (turns of cable for a given distance). The speedo was kaput when I got the bike, but...
Hello JD, I'm not sure, but I'll give you some info about it. I'm changing the final drive from 6:25 ratio to 5:26. Is this mostly a matter of changing some...
... The difference in ratio's between km's and miles is 1.6 (approx). Much bigger than the difference in ratio's between a 5:26 and a 6:25 drive. If you're not...
Kim, I believe you are talking about the W number in the speedometer The W (Wegdreh Zahl) is the ration depending configuration of the speedometer. According...
... Aha! Didn't think of that, yes: in that case there'd be no need to change the internals to convert between miles and km. Sounds reasonable. Anybody out...
Ser, This information should be very helpful. I figured the km/h speedometer is just the face. Changing odometer gearing is probably easy due to the two...
... Someone with an R26 having a 5:26 final drive will have to download Palo Alto's ratio sheet and perform the test. The test requires attaching a paper clip...
Hello, I just joined your group. My name is Brian Wilson, and I am currently restoring a '59 R26. When I was a youngster growing up in Mexico in the very...
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