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04-03-2020, 09:31 PM | #1 |
Junior Member
Join Date: Mar 2020
Location: New Zealand
Posts: 4
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Throw out arm travel
Can anyone tell me how far the throw out arm moves at the top hole (total travel) when the clutch pedal is depressed/operated and the arm length please.
I am trying to work out the linkage lengths to make my Wilwood cylinder move the clutch throw out bearing the correct amount and don't have any of the original parts to measure. |
04-03-2020, 09:38 PM | #2 |
Member Emeritus
Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: Throw out arm travel
What year are you looking for? There is a chart of the earlier years lengths.
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04-03-2020, 09:40 PM | #3 | |
Senior Member
Join Date: Sep 2011
Location: Christchurch New Zealand
Posts: 1,611
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Re: Throw out arm travel
Quote:
More details will surely assist. Phil NZ |
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04-03-2020, 11:37 PM | #4 |
Senior Member
Join Date: Jan 2014
Location: Orcas Island Washington
Posts: 4,932
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Re: Throw out arm travel
I just did this exact same thing 2 weeks ago while setting up a wilwood master and slave cyl when converting to a hydraulic clutch. The rod moves about 1 1/4" off the clevis of the original clutch pedal. I mounted the master cyl on the frame rail so I could keep original pedals. My slave cyl is their 'pull type' and works perfectly. You need to align all points for direct push/pull with no side thrust. I assume you may be using something for engine that isn't the original, as the ford direct push rod to arm can't be beat for a flathead in a flathead car. My master is 7/8" bore and so is the slave. 3/4 master pushed easily but not enough throw.
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Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1947 Tonner Pickup (red) mostly stock with exception of a cummins 6at turbo diesel, 1946 Tonner Pickup (green) with 226 cu in 6 cyl flathead, 1979 Toyota landcruiser wagon, completely encased in 1947 Ford Jailbar sheet metal. Ok, cornbinder rear fenders..... 'Rusty ol' floorboards, hot on their feet' (Alan Jackson) |
04-04-2020, 01:08 AM | #5 |
Junior Member
Join Date: Mar 2020
Location: New Zealand
Posts: 4
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Re: Throw out arm travel
Hi Phil,
Sorry didn't want to complicate things. 1931 Model A pickup with a 59A flathead, new flywheel, pressure plate and clutch plate. the gearbox is a T5 5 speed. The forks and throw out bearing should be the same as original 59A. the original arm should be 3.375" long and I need to know how far that arm would move when the clutch is operated? I would think about 30mm at a guess. cheers |
04-04-2020, 01:16 AM | #6 |
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Join Date: Apr 2015
Location: Sweden
Posts: 3,045
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Re: Throw out arm travel
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Aim for the shortest lever in that pic and it should work. Get the angle of the lever right. |
04-04-2020, 01:25 AM | #7 |
Junior Member
Join Date: Mar 2020
Location: New Zealand
Posts: 4
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Re: Throw out arm travel
Yes think you are right flatheadmurre
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04-04-2020, 10:55 AM | #8 |
Senior Member
Join Date: Feb 2020
Location: Paducah Ky
Posts: 279
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Re: Throw out arm travel
My 48 with an OT engine/trans has a hydraulic clutch with about 3/4" of travel at the pushrod contact point of the throw-out arm. It works fine but could probably use a little more travel.
Al Hook |
04-04-2020, 10:15 PM | #9 |
Junior Member
Join Date: Mar 2020
Location: New Zealand
Posts: 4
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Re: Throw out arm travel
Job done thanks for the help
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04-05-2020, 09:01 AM | #10 |
Senior Member
Join Date: Jan 2011
Location: Central Ohio
Posts: 5,067
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Re: Throw out arm travel
Looks like your setup should work just fine - as long as your MC has enough fluid volume for the travel you need.
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04-05-2020, 01:19 PM | #11 |
Senior Member
Join Date: Feb 2020
Location: Paducah Ky
Posts: 279
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Re: Throw out arm travel
Looks like you did the same as I did. Giving yourself a choice of mounting holes to vary the ratio of lever movement with respect to pedal movement. I did it at the pedal lever tho. with basically a variable length lever arm. Sorry I can't do pics.
Al Hook |
04-05-2020, 05:14 PM | #12 | |
Senior Member
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,113
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Re: Throw out arm travel
Quote:
Al H.....Send me your pics and I'll try to do 'em for ya. DD e-mail to: [email protected] |
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