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Bias Pedal Box Question


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#1 Gaz66

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Posted 11 April 2025 - 05:14 PM

Is there anyone on here using a 3 cylinder bias pedal box such as the obp one?
If there is.... what size cylinder are you using for the clutch?

#2 nicklouse

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Posted 11 April 2025 - 05:48 PM

Using the KAD one.

designed for the Mini pedal box so the leverages will be different.



#3 Shooter63

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Posted 11 April 2025 - 06:50 PM

The clutch bore size doesn't change, so .750 will do the job, as a side point, it was and still probably is illegal to run a bias box on the road which is adjustable and was an MOT Failure, you had to set it up and pin/weld it. If you think about it a turn the wrong way could load the rear brakes meaning when you hit the brakes the next thing you know you are backwards in a hedge or worse

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#4 Gaz66

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Posted 12 April 2025 - 04:02 PM

Another angle on the clutch....
Will putting a smaller bore cylinder in make the clutch easier to operate or will there not be enough fluid moved then to operate it fully?

#5 imack

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Posted 12 April 2025 - 04:21 PM

I'd imagine it's not going to push enough fluid to operate the slave cylinder fully. What clutch/flywheel set up do you plan to use?

#6 Gaz66

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Posted 12 April 2025 - 04:26 PM

I'd imagine it's not going to push enough fluid to operate the slave cylinder fully. What clutch/flywheel set up do you plan to use?

It's going to be a pre verto setup with grey diaphragm

#7 nicklouse

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Posted 12 April 2025 - 04:43 PM

Another angle on the clutch....
Will putting a smaller bore cylinder in make the clutch easier to operate or will there not be enough fluid moved then to operate it fully?

Smaller will make it easier but you will have to move it further.



#8 nicklouse

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Posted 12 April 2025 - 04:53 PM

The one from KAD has the green tag. This will give you the bore size.

1s7IVgn.jpg

 






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