Need help with high gear

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Model T Ford Forum: Forum 2012: Need help with high gear
Top of pagePrevious messageNext messageBottom of page Link to this message  By Austin Baker on Sunday, August 26, 2012 - 03:10 pm:

With my emergency brake all the way forward the adjustment bolt does not go past the cam. It likes about 3/4" to slip off cam. Might I have the wrong emergency cross member? The cam looks to have been replaced by being welded on to a 1/2" stub where they cut it off and welded on another cam.

Cam pic


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dennis Halpin on Sunday, August 26, 2012 - 04:21 pm:

Yes, somebody's done something to that cam. Now, the $5 question is why?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Miller, Mostly in Dearborn on Sunday, August 26, 2012 - 05:33 pm:

It could have started life as a TT brake handle assembly which has a longer cam due to the taller frame rail.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Matthew David Maiers on Sunday, August 26, 2012 - 05:48 pm:

maybe someone didnt want it going into high gear?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bill dugger on Sunday, August 26, 2012 - 06:07 pm:

Best thing is to check on a used brake unit . then try and see what can be done with the one you have. \Just my opinion


Top of pagePrevious messageNext messageBottom of page Link to this message  By Allan Richard Bennett on Sunday, August 26, 2012 - 07:15 pm:

Austin, at some time you cross shaft may have been modified to suit an earlier car. The clutch arm on these is set at a different distance from the hogshead, and if a later type shaft like yours is used, the cam has to be moved inwards somehow. As Bill suggests, compare it with a known original to see what you have.

Hope this helps.

Allan from down under.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Sunday, August 26, 2012 - 07:48 pm:

Could it be that the TT which has a longer arm on the cam, has the hole to mount it to the shaft in a different place so as to put the cam in the same place in relation to the clutch shaft arm as the car. The 1928 T parts catalog list two different numbers, one for car and one for truck but both take the same handle. I would think the shaft its self would be the same for both only the cams (speed lever)would need to be changed.
Anyway, best bet is to find another cross shaft assembly.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Wayne Sheldon, Grass Valley, CA on Sunday, August 26, 2012 - 11:12 pm:

Yes it does look like a TT cross shaft that has been cut down. I did that once, and it worked fine. So I did it again for another car and had exactly the same problem as you are having. I thought about it for a bit, came to the conclusion that the relative angle between the cam arm and the brake handle had to be different for a cam of the same length to engage at the same position given the geometry of the longer arm.
Since I was trying to make an endurance run in two days, an acetylene torch in place made "short" work of it in a few minutes.
Best fix would be to replace it with a correct car cross shaft and handle. Next best would be to remove that shaft and handle from the car. Then use a torch and tools to reshape the cam shorter. You would get a better job easier that way. Believe me, reshaping that in place may have been fast, but it wasn't fun with the clutch arm, floor, body, wires etc in the way.
Why it worked fine the first time I have not been able to figure out.
Good luck.
Drive carefully, and enjoy, W2


Top of pagePrevious messageNext messageBottom of page Link to this message  By Austin Baker on Monday, August 27, 2012 - 11:54 am:

Thanks for all the help.


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