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Search found 796 matches

by malmac
Sun Oct 28, 2018 4:17 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Possible next project - my first /2
Replies: 183
Views: 43023

a youtube video on reaming little end bushes

Here is a video where the crank is still in the bike. I dont think it is rocket science, just takes time and care not to overshoot the clearance.


https://www.youtube.com/watch?v=0WdlA1oqs6I



Mal
by malmac
Sun Oct 28, 2018 3:57 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: SKF bearing numbers for R50/2 Engine
Replies: 2
Views: 791

An interesting video clip on these bearings


I am not far off rebuilding my R69s engine. Bearings are obviously a subject of interest.


https://www.youtube.com/watch?v=4reCcfhYV8E


Mal
by malmac
Thu Oct 25, 2018 3:55 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: New horse in the stable
Replies: 7
Views: 1798

Glad you have room for a new horse

My shed is packed to the gunnels, so no new bikes for this little black duck.

The 69s looks good, hope you have lots of fun rides.


mal
by malmac
Thu Oct 25, 2018 12:36 am
Forum: Vintage (1948-1969) Motorcycles
Topic: R67 Power Down On One Side
Replies: 8
Views: 2274

Grudge Match - you might not be - maybe they are

You might have to start from scratch. Do the timing again - maybe that is wrong Check the fuel - did they just throw some av gas in to make it go quicker? Are the plugs the correct plugs, are they gapped correctly? Check all the carb settings Check the valve clearances - if they are set too tight t...
by malmac
Sun Oct 07, 2018 2:41 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Removing the wrist pins
Replies: 5
Views: 1394

Wear and tear

I would suspect that the pin has worn into the piston thus creating the groove. If the wear process has created a ridge rather than just a groove, you might need to reem out the hole so the pin is not jamming against anr ridge (if one is has formed). I think if you go to a cheapie auto shop you may ...
by malmac
Thu Oct 04, 2018 4:23 am
Forum: Vintage (1948-1969) Motorcycles
Topic: R60/2 transmission and final drive leak repair
Replies: 1
Views: 879

Interesting write up

Hey thanks for that. I have a final drive awaiting my attention and your blog was very informative - I must admit I did not drop on to the leak through the pinion spline - good tip.


Regards Mal
by malmac
Tue Oct 02, 2018 5:00 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Torque Wrench. What does 25 lbs feel like?
Replies: 4
Views: 1286

I suspect if you try and get


I suspect if you try and get a click torque wrench which does everything - it makes it hard.

Here are my three click wrenches which go from about 6 ft/lbs up to 250 ft/lbs.

The big one I use for the rear crankshaft bolt.




Cheers


Mal
by malmac
Thu May 24, 2018 2:20 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Back firing through the muffler upon shifting...
Replies: 7
Views: 1821

un burnt fuel in muffler

If there is a "popping" in the muffler, would that be unburnt fuel vapour being pumped out of the right cylinder? I can only think of three possible reasons - there may well be more. 1. The fuel mixture is so rich on the right cylinder that not all the fuel is burnt during the combustion p...
by malmac
Fri May 18, 2018 3:42 am
Forum: Vintage (1948-1969) Motorcycles
Topic: R51/3 fitted with Jim Vonkas & Petere Gibbs style oil filter (photo included)
Replies: 7
Views: 2125

What a nice Job

I knew Peter Gibbs quite well and as anyone who knew him would undoubtedly say, "we miss him." However I did get one of his filter housings off him and have yet to fit it to an engine. Your adaptation looks good and I hope it works to your satisfaction. How often do you expect you will cha...
by malmac
Sun May 13, 2018 6:24 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Retouch or repaint?
Replies: 282
Views: 85430

thank you for the information

Malmac The paint procedure, or at least the one being use is; we first got all parts very clan, then treated the metal with phosphoric acid and then used a conventional primer but now with epoxy primer the parts must be clean and the phosphoric acid step is eliminated. Epoxy is “DTM” (direct to meta...