Clutch fork travel
#1164259
01/24/12 08:56 PM
01/24/12 08:56 PM
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Joined: Jan 2003
Posts: 3,031
Erda, UT
67Charger
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,031
Erda, UT
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How much does the clutch fork need to move (at the end OUTSIDE the trans) to properly disengage a diaphragm type clutch? I am working on a hydraulic conversion as mentioned in a few other posts and I need a hard number.
11.33 @ 118.46 on motor
10.75 @ 125.35 w/ a little spray
Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race
Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023
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Re: Clutch fork travel
[Re: Bill MeLater]
#1164261
01/24/12 11:04 PM
01/24/12 11:04 PM
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Joined: Jan 2003
Posts: 3,031
Erda, UT
67Charger
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,031
Erda, UT
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Fair enough. I am new to the world of 4 speeds, so I will eliminate a variable and ask for throw out bearing travel.
11.33 @ 118.46 on motor
10.75 @ 125.35 w/ a little spray
Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race
Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023
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Re: Clutch fork travel
[Re: 67Charger]
#1164262
01/25/12 12:33 PM
01/25/12 12:33 PM
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Joined: Dec 2004
Posts: 2,368
Wheatfield, NY
Cuda340
top fuel
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top fuel
Joined: Dec 2004
Posts: 2,368
Wheatfield, NY
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Enough to give you about .060" between the clutch disc and the pressure plate and/or flywheel. You will have to make a bump stop on the pedal to achieve this. I made my own set up too and used a diaphram style clutch.
Does that make sense??
Last edited by Cuda340; 01/25/12 12:35 PM.
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Re: Clutch fork travel
[Re: Cuda340]
#1164263
01/25/12 05:29 PM
01/25/12 05:29 PM
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Joined: Jan 2003
Posts: 3,031
Erda, UT
67Charger
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,031
Erda, UT
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It does, but I am vainly trying to put the horse ahead of the cart. I Am working on a hydraulic system and in order to pick the slave, I need to know how much to move the bearing, which can then be used to calculate how much throw is needed on the outside of the fork. I don't have all the pieces in hand yet, just searching for info in the mean time.
11.33 @ 118.46 on motor
10.75 @ 125.35 w/ a little spray
Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race
Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023
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Re: Clutch fork travel
[Re: 67Charger]
#1164265
01/26/12 05:03 PM
01/26/12 05:03 PM
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Joined: Mar 2007
Posts: 9,336
South-Central (Sebring), FL
Commando1
master
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master
Joined: Mar 2007
Posts: 9,336
South-Central (Sebring), FL
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Quote:
I Am working on a hydraulic system and in order to pick the slave, I need to know how much to move the bearing, which can then be used to calculate how much throw is needed on the outside of the fork.
For any slave that you choose, you do not choose by travel but by matching bore size to your master cylinder.
e.g. if your master cylinder bore is 3/4" then your slave should also be 3/4". M/C=1", slave=1" and etc...
Pretty hard to find a slave that won't push the clutch fork the distance you need if you're retaining the stock clutch fork.
Here's some excellent reading that you will find very useful:
http://www.hurst-drivelines.com/files/Clutch_Linkage_Installation_Tips.pdf
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