Search found 471 matches

by malmac
Sat Feb 27, 2021 3:09 am
Forum: Classic (1970-25 years ago) Motorcycles
Topic: stroke 6 kickstarter lever.
Replies: 0
Views: 83

stroke 6 kickstarter lever.

Usually dont hang around this part of the Forum because I also have an R69s. However I am looking at buying a 1974 R90/6 with kickstarter lever. Would someone be able to tell me how far out the lever sits from the airbox face? One of the ones seems to have the lever sitting out further than I rememb...
by malmac
Thu Feb 25, 2021 2:49 am
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 81
Views: 11929

Re: let the games begin - R69s engine rebuild

Been getting the bits ready to place the crank back into the case.

Good to be putting parts back together.
MAL_1300LR.jpg
Just dummied this up with the old bearing - just to show the press tool.
MAL_1302LR.jpg
Fitting the new camshaft gear to the camshaft.
by malmac
Tue Feb 23, 2021 2:30 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: R27 GENERATOR HELP PLEASE
Replies: 7
Views: 837

Re: R27 GENERATOR HELP PLEASE

Take a look at this link... https://www.snafu.org/restore/uandm_bmw_v1.pdf Understanding BMW /2 electrics explains very well how generator works and how to test. Start by cleaning rotor contact points, check brushes and springs, check free movement of brushes. This books describes how to revive a g...
by malmac
Tue Feb 23, 2021 2:25 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Engine mounts torque settings
Replies: 6
Views: 214

Re: Engine mounts torque settings

Have a look at the thread size and pitch and search for recommended torque settings for those specs. That should give you an objective starting point. Obviously use of a suitable loctite product should assist in them not coming lose. I assume the single vibrates more than the twins but have never ri...
by malmac
Wed Feb 17, 2021 2:36 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 81
Views: 11929

Re: let the games begin - R69s engine rebuild

The real fun is yet to come. Do yourself a favor and heat the case in the oven to at least 300 degrees F. Obviously freeze the crank overnight. The crank will fall in. And still retain enough heat so the rear bearing race does not stick when drawing the assembly forward into the front carrier. Dave...
by malmac
Wed Feb 17, 2021 1:33 am
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 81
Views: 11929

Re: let the games begin - R69s engine rebuild

Well the 3.6mm spacer looks good for the centering of the conrods in the bores.
Just need to look at the oil slinger clearance.
and of course need to confirm the rear bear carrier will sit well with the rear oil slinger if I use the 2mm spacer.

69s Crank Fitment 04LR.jpg
by malmac
Tue Feb 16, 2021 11:31 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 81
Views: 11929

Re: let the games begin - R69s engine rebuild

Well the flywheel is sorted. I did put a speedie sleeve on just to make the oil seal surface 100% MAL_1278.jpg I did give the bench a clean up ready for the engine assembly steps. Now I am measuring up all the clearances involved in fitting the new crank into the crankcase. Of course one can just lo...
by malmac
Sat Feb 13, 2021 1:28 am
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 81
Views: 11929

Re: let the games begin - R69s engine rebuild

Well delays, delays, delays...... Today I thought I would check out the clearance between the back of the flywheel and the rear main engine bearing. So out with the new oil slingers. Poor fit. mmmmmmmm. The problem is that the way the reproduction slingers have been pressed the part that is meant to...
by malmac
Wed Jan 06, 2021 3:30 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 81
Views: 11929

Re: let the games begin - R69s engine rebuild

The test with the flywheel installed on the bench is probably not worth much. The test will be after installation in the case and then truing the flywheel to that. A lot of trial and error may be necessary, but sometimes they come right in. Dave Dave You are probably right. In the past when reassem...
by malmac
Wed Jan 06, 2021 3:06 am
Forum: Vintage (1948-1969) Motorcycles
Topic: So where do you live and ride?
Replies: 41
Views: 4988

Re: So where do you live and ride?

Great bike and I have heard that part of the US is a great place to ride.

Lets hope you get more great rides in in 2021.

Cheers


Mal