killerferret666
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| posted on 19/3/14 at 12:25 PM |
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throttle linkage piece - (question with
my throttle pedal doesn't have enough throw in it, so the best way is to multiply the output. Currently im only opening the throttle about
2/3
I'm after something like this, but not at the price of £130!! I'd attach the pedal to an inner hole and throttle body to an outer one
giving more travel to the throttle body.
But wondered had people done similar, or how did they multiply their output from the throttle pedal.
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Miami Gt4 Blog - Click Here
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killerferret666
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| posted on 19/3/14 at 12:49 PM |
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found out this piece is called a bellcrank.
If you find out the right name of pieces google becomes your friend! Hope this helps others in the future!
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mark chandler
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| posted on 19/3/14 at 12:57 PM |
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Can you not move the pivot on the pedal by either extending the arm or re drilling the fulcrum or shorten the arm on the throttle body, if it has a
snail try and find a smaller one
Last resort for me is a bell crank, I had one and it jammed open  it was not well engineered and does add complexity, 2 x cables etc.
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killerferret666
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| posted on 19/3/14 at 01:05 PM |
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quote:
Originally posted by mark chandler
Can you not move the pivot on the pedal by either extending the arm or re drilling the fulcrum or shorten the arm on the throttle body, if it has a
snail try and find a smaller one
Last resort for me is a bell crank, I had one and it jammed open it was not well engineered and does add complexity, 2 x cables etc.
This is my last resort
Floor mounted pedal with arm below and the swinging arm already goes low to floor level. Pic below;
and the engine is an EFI engine so doesn't have an arm per say, but a radius'd position shown in the photo below, that's already a
small piece so not sure id get the extra movement id need...hence here i am at this crossroads. Also the arm has pieces of metal in positions used for
setting up the throttle position sensor so would be a big pain if it was swapped
[Edited on 19/3/14 by killerferret666]
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Miami Gt4 Blog - Click Here
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The Black Flash
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| posted on 19/3/14 at 02:42 PM |
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I had the same problem with mine. 
I made a multiplying lever at the throttle end, with a longer arm to attach the cable to:
And I replaced the plastic throttle cam with one I made from ally, with a smaller diameter, hence less cable required to open it:
Might work for you if you bolted it to the existing metal arm?
If not, you can make a bell crank pretty easily from 5mm ally plate and a few rod-end bearings; no need to spend that sort of money. Skateboard wheel
bearing for the centre, those rod ends are only a few pounds each from the bay, you can buy ready-threaded rod to join them or just buy some ss bar
and drill and tap yourself. But I'd have thought you only need the centre bearing and just attach the cable ends to each arm.
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killerferret666
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| posted on 19/3/14 at 02:49 PM |
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quote:
Originally posted by The Black Flash
I had the same problem with mine.
I made a multiplying lever at the throttle end, with a longer arm to attach the cable to:
And I replaced the plastic throttle cam with one I made from ally, with a smaller diameter, hence less cable required to open it:
Might work for you if you bolted it to the existing metal arm?
If not, you can make a bell crank pretty easily from 5mm ally plate and a few rod-end bearings; no need to spend that sort of money. Skateboard wheel
bearing for the centre, those rod ends are only a few pounds each from the bay, you can buy ready-threaded rod to join them or just buy some ss bar
and drill and tap yourself. But I'd have thought you only need the centre bearing and just attach the cable ends to each arm.
Ideal solution would be your throttle muliplyer..i like it.
Unfortunately space wont allow!, so it does look like i need to make a good bell crank and yes your right ill attach the cable to each end rather then
have extra parts that aren't needed. ill probably put a return spring in there as well.
[Edited on 19/3/14 by killerferret666]
Building DDR GT4
Miami Gt4 Blog - Click Here
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40inches
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| posted on 19/3/14 at 03:57 PM |
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I had to do the opposite ie: increase throttle movement, but it would only need the cables swapping over to have the desired effect.
This could be done anywhere on the cable.
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The Black Flash
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| posted on 20/3/14 at 10:02 PM |
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quote:
Originally posted by killerferret666
Ideal solution would be your throttle muliplyer..i like it.
Unfortunately space wont allow!, so it does look like i need to make a good bell crank and yes your right ill attach the cable to each end rather then
have extra parts that aren't needed. ill probably put a return spring in there as well.
[Edited on 19/3/14 by killerferret666]
That's ironic...I preferred the idea of a bell crank but couldn't fit one in
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