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clutch rod position

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tomshobby

tomshobby

Yoda
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When I put my car back together I installed the clutch rod in the bottom hole on the fork shaft arm. I did that because of some physical problems that make it a little more difficult to push the clutch down.

When I did that the clutch pedal had to be pushed to the floor to disengage the clutch which made it more difficult for Shirley to drive the car. A problem because of her bad knee.

She is going to have a knee replacement this Wednesday and I thought I would try the rod in the middle hole to see if it might work for me and be better for her when she recovers to the point she can again use the clutch.

Finally the point: After a short drive I noticed the pedal free travel and distance to disengage were both different.

I have seen these hole positions discussed many times on the forums but have never really seen where anyone has had a good explaination.

I wonder if the different holes were put there for some sort of clutch pedal adjustment feature.

BTW, I think the change will work better for both of us.

Now it is time to go for a ride.
 
Tom,

I've always used the middle, based on what I saw from original setups when we serviced Tr6's back in the 70's at the dealership.

Which makes one wonder if it was always to be the middle, why three holes. It cost more to drill or stamp three holes than one, so it wasn't a cost saver.
 
The same clutch shaft was used in several different models of Triumphs. The position of the clutch slave push rod is based on which model car. For the TR6 the middle hole is correct for a Stag I believe it is the lower position.
 
Tom, It just a lever problem from physics class. If you use the bottom hole you have more mechanical advantage, ie, it takes more pedal throw but less pressure to push the throwout bearing the same distance against the clutch spring pressure. If you use the uppermost hole it takes more pedal pressure, but less pedal movement. And the middle one of course should split the difference, in theory of course.
 
Well, back from a couple hundred mile drive. Went to a town about 30 miles didtant to watch our granddaughter play soccer. Then drove another ways to see an old water powered flour mill that was built in the 1800's. Then up to Devil's Lake Park. And back on the ferry across the Wisconsin River.

Like TRTEL pointed out it should reduce the force required which is why I had it in the lower hole, and it did work. It was in the lower hole when we met Roman at the car show last fall. Roman's explaination makes sense. A good way for Triumph to save money.

So, mystery solved.
 
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