BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: Fraz on 06 May, 2025, 12:31

Title: Where supplies clutch push rods?
Post by: Fraz on 06 May, 2025, 12:31
Part Number 65-3940
1/4" dia rod x 11 7/8" long

My new rod has failed
After only 25 miles, it has mushroomed to the shape of the ball bearing on the gearbox side adjuster.

Guessing it wasn't hardened correctly?

The supplier is unable to source another.

Can anyone advise where I can buy a replacement please?
Title: Re: Where supplies clutch push rods?
Post by: Ian C on 06 May, 2025, 16:08
I believe I suggested buying a length of 1/4" OD silver steel rod and making your own in April. It's not difficult to make one, and I would imagine much cheaper than buying from a dealer who may not have had the ends correctly heat treated. There's a link below to a 13" long rod for £6.64 inc. delivery.

https://www.ebay.co.uk/itm/271375266482

Good Luck,  Ian
Title: Re: Where supplies clutch push rods?
Post by: V500 on 06 May, 2025, 16:10
File/grind off the mushrooming, harden the ends by quenching and reuse.
If it's now slightly too short insert a 1/4 X 1/4" roller bearing in the middle to regain the length.
Title: Re: Where supplies clutch push rods?
Post by: Fraz on 06 May, 2025, 16:58
Quote from: Ian C on 06 May, 2025, 16:08 I believe I suggested buying a length of 1/4" OD silver steel rod and making your own in April. It's not difficult to make one, and I would imagine much cheaper than buying from a dealer who may not have had the ends correctly heat treated. There's a link below to a 13" long rod for £6.64 inc. delivery.

https://www.ebay.co.uk/itm/271375266482

Good Luck,  Ian

You're right.
The one I bought from a reputable supplier has mushroomed.

Thanks for the link, I've ordered a length to make my own

Much appreciated
Title: Re: Where supplies clutch push rods?
Post by: Mike40M on 08 May, 2025, 20:11
Just a thought. Even if bad hardening, 25 miles sounds very curious. As wear only occurs when clutch is used. Could it be that there is no play in the rod?