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glennpm · 03-23-2026, 07:45 AM

A larger diameter wheel cylinder will:

- Give quicker action due to larger volume displaced
- harder pedal
- Lower peak braking pressure for the same F (leg/foot force on pedal) since the area is larger.

Pressure = Force / Area
P = F/A

1/16" will probably be unnoticeable with a 12% difference in the areas, 0.887 and 0.994 respectively.

03-23-2026, 07:45 AM	#9
glennpm Senior Member Join Date: Sep 2014 Location: Mid-Coast Maine Posts: 3,349	Re: replacement wheel cylinder question A larger diameter wheel cylinder will: - Give quicker action due to larger volume displaced - harder pedal - Lower peak braking pressure for the same F (leg/foot force on pedal) since the area is larger. Pressure = Force / Area P = F/A 1/16" will probably be unnoticeable with a 12% difference in the areas, 0.887 and 0.994 respectively. __________________ Archives of historical but relevant older articles: ------------- Hover mouse over the links below and click! ~~~~~~~~~~~~~~~~~--------------- Rumble Seat’s Notes Techno Source for the 1932 thru 1953 Flathead Ford Last edited by glennpm; 03-24-2026 at 07:10 AM.