Search found 109 matches

by spider rust
Wed Dec 26, 2018 4:46 am
Forum: Antique (1923-1945) Motorcycles
Topic: BMW R12 Parts catalogue Spring
Replies: 2
Views: 206

BMW R12 Parts catalogue Spring

I am confused, does anyone know where the spring RRC Tuning.de part no. 2061620960 goes in the fork assembly.
If it is part of the forks, as RRC sometimes inc parts not related?
by spider rust
Sun Nov 11, 2018 11:44 pm
Forum: Antique (1923-1945) Motorcycles
Topic: magneto D2B
Replies: 2
Views: 196

Bearing insulation.

The outer race of a magneto bearing is seated in its housing in an insulator to prevent the high-tension return current from passing through the bearing and to force it to pass through the earth brush.

I would highly recommend you to send your mag to a specialist restoration service.
by spider rust
Sun Nov 04, 2018 1:50 am
Forum: Antique (1923-1945) Motorcycles
Topic: Bosch JN7 Rucklicht Copy.
Replies: 3
Views: 198

Bosch JN7 Lense rivets

Jeff, you are correct, some had 2 others had 3. Also whats interesting is the base was painted white on this version.
The one I copied appeared black.
by spider rust
Sun Nov 04, 2018 1:42 am
Forum: Antique (1923-1945) Motorcycles
Topic: BMW R12 Screw question.
Replies: 2
Views: 190

R12 Screw

Thankyou, but it should be steel not brass, and maker marked with a B.
by spider rust
Thu Nov 01, 2018 2:04 am
Forum: Antique (1923-1945) Motorcycles
Topic: BMW R12 Screw question.
Replies: 2
Views: 190

BMW R12 Screw question.

Is this the correct original diameter for this part?
by spider rust
Mon Oct 29, 2018 5:27 pm
Forum: Antique (1923-1945) Motorcycles
Topic: Speedometer readings
Replies: 0
Views: 334

Speedometer readings

If a 120-kph dial plate is used with a solo crown wheel and pinion ( solo used with a 160kph dial plate ) will it read the correct speed up to 120kph? I forgot the tachometer dial plate calibrations are different, so the speed shown won't correspond to the side car 120kph dial plate using the solo ...
by spider rust
Thu Oct 25, 2018 5:53 pm
Forum: Antique (1923-1945) Motorcycles
Topic: Bosch JN7 Rucklicht Copy.
Replies: 3
Views: 198

Bosch JN7 Rivets

See Bosch diagram, there were 3 rivets holding the lense into the top cover.
The diagram has omitted the top one.
Can we see your reference?
by spider rust
Mon Oct 08, 2018 5:59 am
Forum: Antique (1923-1945) Motorcycles
Topic: Magneto refurb UK
Replies: 5
Views: 299

Mag restoration.

Try asking the Vintage Sports/Car Club of the UK. I am sure they will know several sources.
I had my Bosch D2B done by a German Engineer, there is quite a bit to the process.

by spider rust
Mon Oct 08, 2018 4:48 am
Forum: Antique (1923-1945) Motorcycles
Topic: Bosch JN7 Rucklicht Copy.
Replies: 3
Views: 198

Bosch JN7 Rucklicht Copy.

About 12 months of research and a lot of work. This copy is close to the original, inside and out. A diifficult restoration combining a Polish case, fitting a good copy? lense into it. The base was altered to fit the case properly, the interior parts all hand made. The front mounting screw re positi...
by spider rust
Mon Oct 01, 2018 12:07 am
Forum: Antique (1923-1945) Motorcycles
Topic: Unknown tail light
Replies: 4
Views: 251

BMW R12 Rucklicht

These are not what was fitted in the factory.