ragindave
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| posted on 3/6/09 at 06:04 PM |
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Push rod clutch operation type9 gear box
I intend to fit a pedal box to my tiger cat and looks possible to run a direct rod to the clutch arm of the gearbox.
Clutch actuation by pushing the clutch pedal using may be rose joints.
Has anyone attempted this on a kit car.
Cheers any piccys would be good.
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blakep82
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| posted on 3/6/09 at 06:06 PM |
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hmm, sounds a good idea if you can do it!
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IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Breaker
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| posted on 3/6/09 at 06:24 PM |
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Mmm, if you are planning a direct rod between the pedal and the clutch arm it will become very difficult.
Suppose a normal clutch has a clamping force of 600kg (more or less) and your clutch arm has a 3:1 leverage arm. This means your foot has to press
200kg to engage the clutch 
Unless you are a bodybuilder, pressing the clutch will be very difficult 
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blakep82
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| posted on 3/6/09 at 06:28 PM |
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quote:
Originally posted by Breaker
Mmm, if you are planning a direct rod between the pedal and the clutch arm it will become very difficult.
Suppose a normal clutch has a clamping force of 600kg (more or less) and your clutch arm has a 3:1 leverage arm. This means your foot has to press
200kg to engage the clutch
Unless you are a bodybuilder, pressing the clutch will be very difficult
hydraulic is very different, but think in terms of a cable clutch, you've got the clutch arm and padal ratios to help, but thats all...
in this rod system, all he's doing is replacing the cable with rods?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Breaker
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| posted on 3/6/09 at 06:41 PM |
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quote:
Originally posted by blakep82
hydraulic is very different, but think in terms of a cable clutch, you've got the clutch arm and padal ratios to help, but thats all...
in this rod system, all he's doing is replacing the cable with rods?
Yes, you are right. Forgot about the leverage of the clutch pedal.
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big_wasa
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| posted on 3/6/09 at 06:55 PM |
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Wyn has done a pull rod clutch 
link
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Micael
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| posted on 3/6/09 at 07:01 PM |
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I have a similar clutch setup as Wyns.
It works lika a charm.
Micael Moose Åman
Petrolhead and all around nice guy
"Don't leave the duck there. It's totally irresponsible. Put it on the swing, it'll have much more fun." //Sleep Talkin Man Dec 23
2009
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David Jenkins
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| posted on 3/6/09 at 08:02 PM |
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Doesn't the fact that the gearbox moves around make life difficult?
At least with a cable, or with hydraulics, there's a flexible link between the pedal and the box.
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lsdweb
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| posted on 3/6/09 at 10:20 PM |
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quote:
Wyn has done a pull rod clutch
- Yeah, worked a treat - I just wished I'd taken a photo of it with the leak free, class winning Zetec in it, not the earlier leaky
Crossflow!
Wyn
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coozer
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| posted on 4/6/09 at 07:50 AM |
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I intend to retro fit a Wyn type system. Engine doesn't move around too much and the rose joints in the system will be enough slack.
Drilling holes along the pivot bar to adjust the bias will also help set up a nice pedal feel. would be great for a upgraded clutch IMO.
The cable bend is too acute on mine and I reckon may lead to premature failure., and there's no adjuster on it making it a pain to take off.
There's also the stop, that can be incorporated into the pivot rather than the pedal box in the footwell that I can't reach.
In fact there's so many advantages I want to do it right now!
1972 V8 Jago
1980 Z750
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