Antnicuk
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| posted on 25/1/08 at 10:11 PM |
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Floor Mounted Pedal Box Question
well i bit the bullet and bought a new floor mounted 3 in one floor mounted pedal box complete with 3 master cylinders and bias bar from OBP.
I had a little look tonight and i am confused.
I fitted the clutch m/c and with the clevis screwed all the way onto the m/c and the pedal was pushed quite far forward to almost the 3 oclock
position towards the driver. There also seems to be a lot of pedal movement if i use all the m/c's travel. I have a few questions:
Are they supposed to have any kind of spring to return them to the rest position or do they rely on the m/c to push them back.
Is the rest point only held there by the m/c or should there be some kind of stop.
I wont know until I plumb the m/c in but it looks like the m/c will need to be compressed slightly to get the pedal in the right position, is this
right?.
What is the right position for a floor mounted pedal. I would have thought about 1 oclock from the gearbox side, so it points just slightly towards
the driver unles you have double jointed ankles.
Any assistance greatly received.
600 BHP per ton, Stylus Brought back from the dead! Turbo Rotary Powered!
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Mr Whippy
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| posted on 26/1/08 at 12:55 AM |
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Wait till you have a go at the bia's bar...
Anyway you need to post some pics as I/we can't see how you set it up.
As for the clutch, usually there is no extra return spring since there's more than enough given by the clutch spring plate.
All you need to do is find the most comfortable position of the pedal that still allows full travel of the m/c but has a few millimetres play when
released. The m/c internal spring will maintain that free play.
Sounds like the pushrod might need shortening, but only do that once it's plumbed in and all other adjustment has been used up.
Make sure there is a small drop of clean fluid in the m/c if your going to operate it without being plumbed in as you could damage the seals.
Fame is when your old car is plastered all over the internet
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RazMan
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| posted on 26/1/08 at 10:31 AM |
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As Mr W says, pedal positioning largely depends on the pushrod lengths and can only be tweaked a certain amount, making sure that the angle at the
bite point is as close to 90 degrees as possible or brake efficiency will suffer. A couple of mm adjustment can also greatly affect the brake balance
(front / rear)
The clutch is not as critical but the same priciple applies. With hydraulics it is not a good idea to limit the rest point with a stop, as you can
prevent the m/c from drawing in fluid.
[Edited on 26-1-08 by RazMan]
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Antnicuk
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| posted on 26/1/08 at 09:18 PM |
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thanks guys
I think i can adjust it so the pedals sit slightly forward towards the driver at about 1 oclock, just past verticle in the full rest position
Does the push rod need to go all the way in to do its job?,
600 BHP per ton, Stylus Brought back from the dead! Turbo Rotary Powered!
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Antnicuk
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| posted on 27/1/08 at 10:36 AM |
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another thing i cant quite figure is the best way to attach the throttle cable, i just have a 5 mm round bar as the tail from the pedal to attach to,
what do people normally do?, i was considering trying to drill a small hole and clamp the cable either side of the hole.
600 BHP per ton, Stylus Brought back from the dead! Turbo Rotary Powered!
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