The Ford Barn

bmklawt · 06-04-2020, 04:50 PM

Is there a hydraulic throwout bearing that will fit a model A 3 speed transmission.
I'm building a Doodlebug with a John Deere LA tractor engine and the LA clutch arm just doesn't seem beefy enough to me and its a bear to actuate.
I've looked and can't find a 1-3/4" I.D. hydraulic throwout bearing.
Looking for ideas.

Bruce

Synchro909 · 06-04-2020, 05:41 PM

Lengthen the lever!

Patrick L. · 06-05-2020, 06:00 AM

Adding a hydraulic cylinder and master cylinder should be doable. Take some measurements and head to the local dismantling yard.

Jack Shaft · 06-05-2020, 07:44 AM

It wouldn't be hard to lash up a master and slave hydraulic clutch control if you are handy..plenty of 'donor' cars and trucks outhere that use them

rotorwrench · 06-05-2020, 09:32 AM

The doodle bugs I've seen with JD engines usually used the LUC drive set up from the pull behind combine. It's the same basic engine as the LA but a different drive. It seems to me that it's a small three spring clutch. It should be easier to actuate.

Hydraulic clutch actuators are out there but I don't remember what the input retainer sleeve diameter is. The Ford stuff had some pretty big ones and a lot of the later stuff is less than 1.375".

Jim Brierley · 06-05-2020, 11:06 AM

Sponsored Links (Register now to hide all advertisements)

Speedway Motors has hydraulic TO bearings to fit most anything. We use one in our Bonneville lakester, banger powered.

wmws · 06-05-2020, 01:10 PM

[QUOTE=Patrick L.;1895716]I have no idea what a hydraulic T/O bearing is,

I have no idea what a hydraulic T/O bearing is either. Can someone explain.

Ruth · 06-05-2020, 02:09 PM

[QUOTE=wmws;1895863]

Quote:

Originally Posted by Patrick L.

I have no idea what a hydraulic T/O bearing is,

I have no idea what a hydraulic T/O bearing is either. Can someone explain.

Look here for just one example; https://www.speedwaymotors.com/Hydra...it,379207.html

Charlie Stephens · 06-05-2020, 02:15 PM

Be sure to ask this on HAMB.

Charlie Stephens

wmws · 06-05-2020, 06:32 PM

[QUOTE=Ruth;1895882]

Quote:

Originally Posted by wmws

Look here for just one example; https://www.speedwaymotors.com/Hydra...it,379207.html

That is a new one on me. Does it work against the pressure plate fingers. With a travel of only .68 inch I'm not sure how that works.

rotorwrench · 06-06-2020, 02:19 PM

They generally come with shims to adjust the throw.

old31 · 06-06-2020, 04:58 PM

Is it used for a smoother/easier push down?

Jim Brierley · 06-07-2020, 11:09 AM

They are often used where space is limited, such as in race cars.

bmklawt · 06-15-2020, 11:06 AM

Well I've searched the net and checked Speedway and a few others and all I can find is hydraulic throwout bearings with an 1.375" ID, if anybody knows of one with a 1.75" ID I certainly would appreciate your input.

Bruce

1931 flamingo · 06-15-2020, 01:08 PM

Modify the LA arm, make a brkt for a hyd slave cyl and add a M/cyl. Innovate.
Paul in CT

06-04-2020, 04:50 PM	#1
bmklawt Member Join Date: Dec 2018 Location: Holland MI Posts: 34	Is there a hydraulic throwout bearing for a 3 speed transmission Is there a hydraulic throwout bearing that will fit a model A 3 speed transmission. I'm building a Doodlebug with a John Deere LA tractor engine and the LA clutch arm just doesn't seem beefy enough to me and its a bear to actuate. I've looked and can't find a 1-3/4" I.D. hydraulic throwout bearing. Looking for ideas. Bruce

06-04-2020, 05:41 PM	#2
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,496	Re: Is there a hydraulic throwout bearing for a 3 speed transmission Lengthen the lever! __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.

06-05-2020, 06:00 AM	#3
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Is there a hydraulic throwout bearing for a 3 speed transmission Adding a hydraulic cylinder and master cylinder should be doable. Take some measurements and head to the local dismantling yard. Last edited by Patrick L.; 06-05-2020 at 03:35 PM.

06-05-2020, 07:44 AM	#4
Jack Shaft BANNED Join Date: Dec 2019 Posts: 1,196	Re: Is there a hydraulic throwout bearing for a 3 speed transmission It wouldn't be hard to lash up a master and slave hydraulic clutch control if you are handy..plenty of 'donor' cars and trucks outhere that use them

06-05-2020, 09:32 AM	#5
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,422	Re: Is there a hydraulic throwout bearing for a 3 speed transmission The doodle bugs I've seen with JD engines usually used the LUC drive set up from the pull behind combine. It's the same basic engine as the LA but a different drive. It seems to me that it's a small three spring clutch. It should be easier to actuate. Hydraulic clutch actuators are out there but I don't remember what the input retainer sleeve diameter is. The Ford stuff had some pretty big ones and a lot of the later stuff is less than 1.375".

06-05-2020, 11:06 AM	#6
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,085	Re: Is there a hydraulic throwout bearing for a 3 speed transmission Sponsored Links (Register now to hide all advertisements) Speedway Motors has hydraulic TO bearings to fit most anything. We use one in our Bonneville lakester, banger powered.

06-05-2020, 01:10 PM	#7
wmws BANNED Join Date: Feb 2013 Location: Coatesville, Pa Posts: 719	Re: Is there a hydraulic throwout bearing for a 3 speed transmission [QUOTE=Patrick L.;1895716]I have no idea what a hydraulic T/O bearing is, I have no idea what a hydraulic T/O bearing is either. Can someone explain.

06-05-2020, 02:15 PM	#9
Charlie Stephens Senior Member Join Date: May 2010 Location: Southern California Posts: 7,030	Re: Is there a hydraulic throwout bearing for a 3 speed transmission Be sure to ask this on HAMB. Charlie Stephens

06-06-2020, 02:19 PM	#11
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,422	Re: Is there a hydraulic throwout bearing for a 3 speed transmission They generally come with shims to adjust the throw. Last edited by rotorwrench; 06-06-2020 at 06:54 PM.

06-06-2020, 04:58 PM	#12
old31 Senior Member Join Date: Jan 2016 Posts: 2,093	Re: Is there a hydraulic throwout bearing for a 3 speed transmission Is it used for a smoother/easier push down?

06-07-2020, 11:09 AM	#13
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,085	Re: Is there a hydraulic throwout bearing for a 3 speed transmission They are often used where space is limited, such as in race cars.

06-15-2020, 11:06 AM	#14
bmklawt Member Join Date: Dec 2018 Location: Holland MI Posts: 34	Re: Is there a hydraulic throwout bearing for a 3 speed transmission Well I've searched the net and checked Speedway and a few others and all I can find is hydraulic throwout bearings with an 1.375" ID, if anybody knows of one with a 1.75" ID I certainly would appreciate your input. Bruce

06-15-2020, 01:08 PM	#15
1931 flamingo Senior Member Join Date: May 2010 Location: new britain,ct 06052 Posts: 9,389	Re: Is there a hydraulic throwout bearing for a 3 speed transmission Modify the LA arm, make a brkt for a hyd slave cyl and add a M/cyl. Innovate. Paul in CT

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