I have 1954 VH500 and the breather elbow (2073C-41) came without a ball bearing. Does anyone know the size of ball bearing required and how is it held in the elbow?
Many thanks,
Dennis
Singles breather elbow ball bearing
-
- Holder of a Nylon Anorak
- Posts: 287
- Joined: Tue Oct 05, 2021 8:25 pm
- Location: Notts, UK
- Contact:
Singles breather elbow ball bearing
1955 VH500 alloy head
1956 NH350 restoration in progress
1956 NH350 restoration in progress
-
- Holder of a Silver Anorak
- Posts: 648
- Joined: Fri Feb 18, 2011 10:26 am
- Location: Cardiff
- Contact:
Re: Singles breather elbow ball bearing
There is a very thin split pin (or wire similar size) that should fit through a hole drilled in the theaded part of the elbow , you will need to file the pin so it does not obstruct the thread. I think the ball is around 3/16" (don't have one to compare), but there is some thought that the ball is not needed, as it will hinder the breather action, especially if there is no crancase breather fitted, as in earlier singles. You would still need the pipe that attaches to the elbow.
-
- Holder of a Nylon Anorak
- Posts: 287
- Joined: Tue Oct 05, 2021 8:25 pm
- Location: Notts, UK
- Contact:
Re: Singles breather elbow ball bearing
Pete,
Many thanks for your advice. Interestingly, I have two timing cases with elbows still attached and neither has a ball bearing inside so perhaps the previous owners didn't think a ball bearing was necessary either!
Dennis
Many thanks for your advice. Interestingly, I have two timing cases with elbows still attached and neither has a ball bearing inside so perhaps the previous owners didn't think a ball bearing was necessary either!
Dennis
1955 VH500 alloy head
1956 NH350 restoration in progress
1956 NH350 restoration in progress
- Roger Gwynn
- Holder of a Golden Anorak
- Posts: 1143
- Joined: Tue May 28, 2013 11:34 am
- Location: Norwich, UK
- Contact:
Re: Singles breather elbow ball bearing
The pre 1941 versions didn't have the ball valve, perhaps your cases are old
Roger Gwynn, Membership Secretary, curator of the Machine Register and the works drawings. Director of Draganfly Motorcycles, Craven Equipment and Supreme Motorcycles mostly retired.
-
- Holder of a Nylon Anorak
- Posts: 287
- Joined: Tue Oct 05, 2021 8:25 pm
- Location: Notts, UK
- Contact:
Re: Singles breather elbow ball bearing
Roger,
Perhaps so but both elbows have the holes for the split pin if that is relevant.
Dennis
Perhaps so but both elbows have the holes for the split pin if that is relevant.
Dennis
1955 VH500 alloy head
1956 NH350 restoration in progress
1956 NH350 restoration in progress
- Roger Gwynn
- Holder of a Golden Anorak
- Posts: 1143
- Joined: Tue May 28, 2013 11:34 am
- Location: Norwich, UK
- Contact:
Re: Singles breather elbow ball bearing
It is, Ariel didn't bother putting the pin in when they didn't fit the ball. I have wondered how effective the breather is when the aperture is reduced by the diameter of the ball.
Roger Gwynn, Membership Secretary, curator of the Machine Register and the works drawings. Director of Draganfly Motorcycles, Craven Equipment and Supreme Motorcycles mostly retired.
Who is online
Users browsing this forum: No registered users and 29 guests