Johneturbo
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| posted on 17/8/09 at 06:19 PM |
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Throttle pedal ideas
Need to pick the brains of you lot 
I'm trying to work out how i can get more travel for less movement on my throttle pedal.
as you can see in the pic, it's way forward(only way i can get full throttle) due to the cable being close the the pivot point, no room to lower
it due to the chassis bar.
anyone got any ideas how i can get lots of travel for less movement, maybe a pully system? or something on the throttle body end.
cheers
john
 
Rescued attachment pedals.jpg
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Johneturbo
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| posted on 17/8/09 at 06:19 PM |
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.
 
Rescued attachment pedals1.jpg
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r1_pete
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| posted on 17/8/09 at 06:22 PM |
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Shorter lever, or smaller diameter quadrant on the other end.
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Steve Hignett
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| posted on 17/8/09 at 06:42 PM |
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Move the pedal box to the left?
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Dangle_kt
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| posted on 17/8/09 at 06:43 PM |
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I wouldn't suggest any sort of pully, what if it jams! 
what about a top mounted throttle pedal? Mine is like that - yes it would be a pig to have to take the dash off etc to make it work but you will get
the travel you need without any bodges and it will work with the brake and clutch pedals in situ.
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nasty-bob
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| posted on 17/8/09 at 06:49 PM |
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Right, this is where I need to draw a picture but I'll have a go with with words....
How about a bracket bolted to the engine side of the bulkhead that protrudes about 2in or so. On the end is a pivot with a lever. Connect a pushrod
from the throttle pedal to the lever about an inch from the pivot and then connect the cable to the lever about 2in fron the pivot. This will double
the travel of the cable for the same pedal travel, but will of course make the pedal stiffer- theres no free lunch.
That probably made no sense whatsoever, but if it sounds like a goer and you need a picture let me know.
Cheers
Rob
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Johneturbo
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| posted on 17/8/09 at 06:52 PM |
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quote:
Originally posted by Steve Hignett
Move the pedal box to the left?
I'd have to move the master cylinders fit a new bulkhead and move the brake lines
Smaller Quadrant maybe it's an 05 R1
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Johneturbo
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| posted on 17/8/09 at 06:56 PM |
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quote:
Originally posted by nasty-bob
Right, this is where I need to draw a picture but I'll have a go with with words....
How about a bracket bolted to the engine side of the bulkhead that protrudes about 2in or so. On the end is a pivot with a lever. Connect a pushrod
from the throttle pedal to the lever about an inch from the pivot and then connect the cable to the lever about 2in fron the pivot. This will double
the travel of the cable for the same pedal travel, but will of course make the pedal stiffer- theres no free lunch.
That probably made no sense whatsoever, but if it sounds like a goer and you need a picture let me know.
Cheers
Rob
That did make sense, sounds like a better idea than a pully system as it will be rigid.
ETA
and making it stiffer might be handy to,due to it being very sensitive with the light cable/pedal
great ideas so far guys muchly appreciated
[Edited on 17/8/09 by Johneturbo]
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gregs
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| posted on 17/8/09 at 07:26 PM |
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have a look at some of OBPs boxes, they use a 'step-up' bar as described to get sufficient travel.
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Steve Hignett
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| posted on 17/8/09 at 08:19 PM |
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I know mate, but I'd still do it as I think it would be the correct thing to do...
quote:
Originally posted by Johneturbo
quote:
Originally posted by Steve Hignett
Move the pedal box to the left?
I'd have to move the master cylinders fit a new bulkhead and move the brake lines
Smaller Quadrant maybe it's an 05 R1
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bassett
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| posted on 17/8/09 at 09:24 PM |
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I thought i was the only one who had encountered this problem as it makes it difficult pulling away when you need to move your foots position although
mine isnt quite as far ahead as yours. I think your lucky though as you have the horizontal bar rather than the diagonal bulk head bar which reduces
movement another half inch or so. Only solution me and the old man have come up with is a new pedal design to get greater leverage moving it further
away from the pivot point.
[Edited on 17/8/09 by bassett]
My MNR Blog Updated Jan 2010 - Track Day Prep Begins!
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Johneturbo
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| posted on 17/8/09 at 10:21 PM |
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quote:
Originally posted by Steve Hignett
I know mate, but I'd still do it as I think it would be the correct thing to do...
quote:
But then i'd compromise how i want the brake pedal to be inline with my right leg, thats what i fitted them as far right as posible.
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Johneturbo
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| posted on 17/8/09 at 10:24 PM |
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quote:
Originally posted by gregs
have a look at some of OBPs boxes, they use a 'step-up' bar as described to get sufficient travel.
had a look at the OBP stuff, so something like bob was talking about is the way to go me thinks
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Johneturbo
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| posted on 17/8/09 at 10:27 PM |
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quote:
Originally posted by bassett
I thought i was the only one who had encountered this problem as it makes it difficult pulling away when you need to move your foots position although
mine isnt quite as far ahead as yours. I think your lucky though as you have the horizontal bar rather than the diagonal bulk head bar which reduces
movement another half inch or so. Only solution me and the old man have come up with is a new pedal design to get greater leverage moving it further
away from the pivot point.
[Edited on 17/8/09 by bassett]
I know what you mean with the pulling away, it's more a leg movement rather than the foot. i found it really awkward on the trackday i did. so
now looking for a solution.
i think the idea bob described seems do able!
[Edited on 17/8/09 by Johneturbo]
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Chippy
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| posted on 17/8/09 at 11:06 PM |
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It looks to me as though it wouldn't be a major job to take out your pedal box, then the simple answer would be to remake the throttle pivot
higher up, and that would only involve you in redrilling the bulkhead to give access for the cable. Shorten the top of the pedal, and lengthen the
bottom, but keeping it high enough to clear the obstruction. You know it makes sense, :-) Cheers Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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Smartripper
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| posted on 18/8/09 at 07:25 AM |
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Hello,
got the same problem overhere and i just ask MNR what to do about it, they have developed a new pedal with a higher pivot point...
Works a treat.. Daniel
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40inches
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| posted on 21/8/09 at 01:59 PM |
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Had the oposite problem with mine, pedal was almost a switch, made a pivot and used 2 cables, you could do the same thing the other way round.
 
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