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Old 02-26-2018, 06:07 PM   #1
AnthonyG
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Default Hydraulic clutch?

Has anybody converted to a hydraulic clutch. Interested what's used at the thrust bearing fork & how the power cylinder and rod that would actuate it is mounted? Does any Mfgr. make something or is a must fab item?
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Old 02-26-2018, 06:12 PM   #2
1931 flamingo
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Default Re: Hydraulic clutch?

How will depend on what year and tranny and other mods.
When I did it on my 32 w/39 tranny in the 60's there was a slave cyl (universal) available mail away. Fabricated a flat plate that bolted to the top of the tranny, attached the slave and fabricated from the slave to the tranny clutch arm. Obviously a 2nd M/Cyl is also needed.
Paul in CT
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Old 02-26-2018, 06:18 PM   #3
AnthonyG
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Default Re: Hydraulic clutch?

Mine's a '35 with an 8BA and a '39 tranny
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Old 02-26-2018, 06:50 PM   #4
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Default Re: Hydraulic clutch?

In the 60s, on my 1st car, I put a flathead in a model A with a 39 trans and did what 31flamingo did. Made a bracket for a slave cyl. Pretty sure it came from J.C. Whitney like most of the stuff on that car (I was 12 years old).
I don't know about modern hydraulic T.O bearings if one of those could be made to work.
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Old 02-26-2018, 07:10 PM   #5
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Default Re: Hydraulic clutch?

A lot of Chevys use them, like Camaros I think (think that is what is laying around in my garage).
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Old 02-26-2018, 07:23 PM   #6
Jack E/NJ
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Default Re: Hydraulic clutch?

I don't think there's an easier, smoother, more compact & trouble-free clutch actuator than on the original mechanical setups in the original cars. That goes for mehanical brakes too (with Ted's floaters of course). 8^) Jack E/NJ
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Old 02-26-2018, 07:40 PM   #7
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Default Re: Hydraulic clutch?

Speedway has a push type slave cylinder for clutch fork. The stroke is 1.2", think that's enough? JSeery, do u remember or could u check the one in u'r garage to see approx stroke & do u remember where u got it?
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Old 02-26-2018, 07:44 PM   #8
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Default Re: Hydraulic clutch?

I really have no idea, I have a pile of them. Most are race units, but I thought a couple were Chevy. The type I was referring to is part of the throwout bearing itself. I think you are referring to a slave cylinder on the fork (guess I didn't read the OP that well!). You want to extinction on the slave cylinder to match what the movement would be on a stock fork setup.
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Old 02-26-2018, 08:52 PM   #9
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Default Re: Hydraulic clutch?

Yes that’s what I need. Any idea what that travel is? Do u think the 1.2” will do? I do remember when building mine that the travel is leveraged quite a bit, like 4” on the pedal maybe 1” on the linkage to fork. Was hoping someone knew what the actual travel needs to be?
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Old 02-26-2018, 08:52 PM   #10
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Default Re: Hydraulic clutch?

Quote:
Originally Posted by Jack E/NJ View Post
I don't think there's an easier, smoother, more compact & trouble-free clutch actuator than on the original mechanical setups in the original cars. That goes for mehanical brakes too (with Ted's floaters of course). 8^) Jack E/NJ
Exactly. I'm not sure why you'd want the complexity of a hydraulic clutch on an old, Flathead-era Ford. The stock units work pretty brilliantly.
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Old 02-26-2018, 09:04 PM   #11
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Default Re: Hydraulic clutch?

Admiral, doing research, need the info for a project involving more than the clutch.
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Old 02-26-2018, 10:15 PM   #12
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Default Re: Hydraulic clutch?

Anthony...Let's back-up and regroup. I believe you have a flathead, correct? Is it true that you are also still running the '35 transmission? Are you in fact still set-up actuating the STOCK '35 clutch ARM that moves the throwout fork? If so, allow me to guess that your current necessity to utilize a hydraulic clutch comes as a result of utilizing Richard's hydraulic brake mod, which probably does away with part of the stock clutch operating mechanism.

We really need a few more definitive facts about what you have. Because of pedal ratios and clutch arm and linkage dimensions, you can't just pull the answers out of thin air. Otherwise, you'll end up with a clutch that won't fully release, or a clutch pedal that is far too hard to easily push with normal force. DD
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Old 02-26-2018, 10:39 PM   #13
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Default Re: Hydraulic clutch?

Back to the " Songbird" ?
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Old 02-26-2018, 10:41 PM   #14
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Default Re: Hydraulic clutch?

OT
DD another tail dragger?
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Old 02-26-2018, 10:48 PM   #15
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Default Re: Hydraulic clutch?

JSeery
Have you had good experiences using the Hydraulic throw out parts?
I have no experience, but had heard some people discuss problems with them.
Just wondering?
Thanks
Jim
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Old 02-26-2018, 11:07 PM   #16
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Default Re: Hydraulic clutch?

Thought someone might know the actual stroke travel at the fork. Sounds like not. No problem. I’ll measure it.
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Old 02-26-2018, 11:15 PM   #17
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Default Re: Hydraulic clutch?

Quote:
Originally Posted by JRHASZARD View Post
Back to the " Songbird" ?
They've ALL been the "Songbird", except for that brief Cessna 620 trip. DD
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Old 02-26-2018, 11:33 PM   #18
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Default Re: Hydraulic clutch?

Quote:
Originally Posted by AnthonyG View Post
Thought someone might know the actual stroke travel at the fork. Sounds like not. No problem. Iíll measure it.
Again, you're using the term "FORK". The fork is the piece directly behind the throwout bearing. IF you're wanting to use an internal, hydraulically actuated throwout bearing, then what you reference (fork movement) is what counts. If you're wanting a hydraulic slave cylinder to move the original arm on the original throwout cross shaft, then that is the nomenclature that you need to reference.....two totally different ways of accomplishing the same mission. Quite frankly, the external slave cylinder is the most reliable way to do it, as well as most cost effective.....MY OPINION! DD
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Old 02-27-2018, 09:29 AM   #19
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Default Re: Hydraulic clutch?

Quote:
Originally Posted by Kahuna View Post
JSeery
Have you had good experiences using the Hydraulic throw out parts?
I have no experience, but had heard some people discuss problems with them.
Just wondering?
Thanks
Jim
I don't have much experience with them. My kids/grandkids mess with them on race cars and were looking to use them on the 5.0 mustang setups vs the cable. I prefer the cable, but it has it's own issues.
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Old 02-27-2018, 09:46 AM   #20
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Default Re: Hydraulic clutch?

My 62 Chevy truck came factory with a dual master cylinder for clutch and brake and a slave cylinder. Works very smooth. I think this was the same set up used on Milners coupe in American Graffiti. Good luck with yours. Just my 2 cents.
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