Brake pedal

[sreta]

I want to convert my non ws6 brake pedal to ws6 and have a question about the pin relocation. I found these photos online (they were also on this forum if I remember correctly) and still don't know the proper way to do this. Should I drill the new hole inline with the other holes(option a), or should I follow the curve of the pedal arm(option b) ? I'm asking because the hole is at the end of the straight part.

[sreta]

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[sreta]

Sorry for multiple posts, this old style version of forum is frustrating.

[737driver]

I would look at your brake pedal ratio. Recently I switched from drums to front disc on a 68 Lemans. Original brake were power brakes with 4 wheel drum and with new disc on the front the brake pedal was very hard to push. Honestly I thought it was low vacuum to brake booster . I made some changes and added an electric vacuum pump. The vacuum pump really changed little. I did not think to check the pedal ratio, however when I did it did not look right, the pedal had two positions for the rod from the brake booster one hole for manual brakes and one for power brakes. I used a formula and recalculated a better pedal ratio. Once I made the new hole and reinstalled the pedal the brake pedal feel was greatly improved and had an excellent feel and response.

If you check the ratio and drill a new hole for the pushrod and Clovis from the booster I would recommend the new hole centered to the width of the pedal.

Here is a simple diagram to calculate the pedal ratio, hope this helps.
Jim

[sreta]

Thanks a lot Jim. I didn't think about that ratio.