Re: disc brake conversions

Posted by Tim Cole On 2011/3/13 9:49:48

Hi Folks:

I don't want to be a spoiler because I agree that brake performance on these cars is significantly below what it was when they were new. But these new parts are for cars that weigh significantly less than Packards.

Also, a parking brake is an absolute necessity on these cars and I think the only trouble free rear disc handbrake was the Dunlop system used on the Jaguar.

The Duo-Servo system used on the Packard actually provided more braking power when new than a disc system. It was more prone to fade and thus long grades required negotiation in low ranges.

The BTV problems notwithstanding the drums on these cars are worn out and there doesn't seem to be lining material available that matches OEM. I find that BTV cars sometimes actually require more pedal effort than a good mechanical system. That is a problem.

One other note about disc systems is that they don't hold up under storage and so these parts will need to be replaced on a regular basis unless they are removed and stored in a protected environment.

I recently worked on an old Ford that had some OEM shoes on it and when you set the parking brake on that car the wheels were locked solid. You could not drive away with that brake on.

Good Luck in your efforts.