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cycling74
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Austin
Joined: 10/29/2017
Posts: 1

Hello, new here. And a new owner of my dads 1965 R50/2. He bought it used in 1966 and it has about 33k miles. He rode it up until about 10 years ago, then it sat. So, we have taken it to a mechanic who understands old bikes and has the time to work on it. He drained/replaced all fluids, replaced gaskets, etc. One issue we can't get past, the left carb is leaking. Mechanic swapped the float, same issue.

Having a hard time finding a replacement for sale anywhere. My mechanic thinks there's a crack in the housing. If I can't find an exact replacement, I'm open to finding a matching pair that would work on a '65. Perhaps there's a newer version or an improved pair from an R69 that would fit?

I searched here for "Bing 1/24/131" and two posts popped up, but not any recent discussions. Are these carbs becoming impossible to find?

MikeL46
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VBMWMO #9300
Joined: 01/01/2016
Posts: 38
Bench Mark Works lists a new

Bench Mark Works lists a new carb for an R50/2. Not cheap though.

http://benchmarkworks.com/

Mike

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67 R50/2 w/R100 engine/trans and Ural Sidecar
69 R60/2 76 R90S 78 R100RS
70 Triumph w/Spirit Eagle Sidecar

Daves79x
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VBMWMO #9030
Joined: 08/09/2015
Posts: 251
This

This link might be of interest: https://www.ebay.com/itm/282705398838

Dave

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Dave

Daves79x
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VBMWMO #9030
Joined: 08/09/2015
Posts: 251
First, Though

I would first like to know exactly where you see the carb leaking. Look for the highest point you see that's wet. The left carb will weep forever out of the air bleed hole in the mixture screw - that is the vent for the carb and an 'overflow', if you will, that will leak always if the bike is on the sidestand. Otherwise, the threaded plugs on the carb bottom are very prone to leaking even if everything looks good. It takes some very creative sealing methods sometimes to stop the leaks. Also, the bowl tops will seep very often as the tops are prone to distorting. If your carb body is good, the leaks can be stopped, except for what I stated above about the sidestand.

Dave

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Dave

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