TC Master Cylinder Pushrod Alignment

[AbingdonNerd]

Mr. Sherrell states that the pushrod should be straight rather than angled at the articulated joint.

Is this correct? Every one that I have seen is at an angle - I would think that the ball/socket joint is used for that very reason.

Photo of image from Mr. Sherrell’s book “TCs Forever.

Thanks in advance for any feedback,

Jeff Delk

[Rob Reilly]

That drawing is exaggerated. Let's say it should be reasonably close to straight.
The lower end of the pedal arm moves in an arc. The master cylinder is in a fixed position.
So there has to be a swivel joint there or it wouldn't work.

[Steve Simmons]

Agreed, it can't be perfectly straight or when you press on it, It would ark the other way. Set it up to be as straight as possible just to make it easier on the joint, and that will also maximize efficiency.

Here's a short video from a while back that sort of touches on this.

https://youtu.be/BorBnoDTKVA?si=nJsk4qNn7mH2A10n

[AbingdonNerd]

Rob/Steve,

Thank you both for the confirmation on this. I thought that the drawing was inaccurate and did not see any way to achieve that orientation.

I am also considering the revised articulated pushrod that is offered by Pelton and Abingdon Spares - as it positively prevents the possibility of having the ball end escape from a worn socket.

Thank you again for your input.

Best regards,

Jeff Delk

[Steve Simmons]

To be fair, it would take a tremendous amount of wear for the socket to separate during use unless it was adjusted way too loose. I currently run an original type on my TC.

[AbingdonNerd]

Thanks Steve,

I will inspect the ball and socket and see how it feels. If I can achieve an acceptable angle, and the joint is sound, I’ll drop the idea of the updated design.