The Marston Sunbeam Club & Register Forum

General Category => Technical Discussion Forum => Topic started by: klaudius on December 04, 2019, 06:09:07 PM

Title: Bearing
Post by: klaudius on December 04, 2019, 06:09:07 PM
Hi. My clutch bearing has a lot of km. Is this something new to get? Although I can change the balls but new saddle makes goat no horse. Is for 500 1932. Greeting Claudius
Title: Re: Bearing
Post by: Tom Snow on December 05, 2019, 02:45:38 PM
Hi Klaudius,

I believe this bearing is no longer available however if you contact H. B. Precision Bearings 01484 665116 http://www.hb-bearings.com/ they will be able to repair it and / or make a new one.  They have re-sized and repaired bearings for me and are now my first stop when I have an obsolete bearing problem to resolve.

Regards,

Tom.
Title: Re: Bearing
Post by: kbryt on December 05, 2019, 08:10:33 PM
Quotebut new saddle makes goat no horse.

Love that, makes a change from silk purses and pigs ears ;D
Title: Re: Bearing
Post by: klaudius on December 06, 2019, 02:17:23 PM
After measuring I'm convinced that it is not in stock (runways like new, gets new balls) but at the 2 shots. Either the metal will be sprayed on or laser applied and then again sanded präsise round. Somebody like that already? What would be the right tolerance? Of course, the heat should not clamp the whole thing .... Greetings Claudius
Title: Re: Bearing
Post by: phutton on December 08, 2019, 12:58:31 PM
Vintage Bearing Company can supply this bearing. Contact on https://www.vintagebearings.co.uk/ or vintagebearing@aol.com
Title: Re: Bearing
Post by: klaudius on December 09, 2019, 08:30:25 AM
Thank you for the address. Will ask there. Does anyone know the size of the camp? Mine is not yet squeezed. The wear and high tolerance arises on the parts themselves. With new bearings, I will have to build up the parts literally to have good guidance. But maybe already enough a new camp. Greetings from Germany . Claudius
Title: Re: Bearing
Post by: phutton on December 09, 2019, 02:55:42 PM
There does need to be a sliding fit of the bearing on the inner clutch plate boss to allow some "float". If it is a tight fit, the clutch will drag.
Title: Re: Bearing
Post by: klaudius on December 09, 2019, 04:34:04 PM
Yes.The game is important that it works well even when warm. Aledings starts wiggling the whole thing is too good of the good. I repaired this quite pragmatically 5 years ago. After more than 9000km the funkcion is still great. Anyway, it hurts me to take something away. So my try to leave as much as possible original. Does anyone know the exact size of the camp? I would like to have ordered that. Here is a picture of the repair. I'm sorry that I attached so many photos. But with my English that is at least something to understand. Many thanks. Claudius
Title: Re: Bearing
Post by: phutton on December 10, 2019, 11:39:30 AM
The ball bearing was introduced with the 6-spring clutch in 1928. Up until then a bronze bush was used. Some people have successfully used a bronze bush in place of the ball bearing.
Title: Re: Bearing
Post by: klaudius on December 12, 2019, 07:14:27 AM
Thank you for your answers and suggestions. State of affairs i volgendes. Weld the reader. Then go to other company finishes, the camp will be there. Then go to DLC coating. Only the processed surfaces are coated. Thus, the original diet would be restored as from 1932. If anyone is interested I will reinstall photos greedy.Gruss from 10 degrees warm Germany .... Claudius
Title: Re: Bearing
Post by: klaudius on April 17, 2020, 06:10:13 PM
Hello
Absolutely wanted to keep the whole original as possible. The parts are built with laser and ground slightly. Also the bearing ring was slept. Now the parts fit together again as they did in 1932. Think with new balls, the bearing will hold for a few decades again. It is for a 9A 1932. Greetings from Germany. Stay healthy. Klaudius