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Stiff Clutch Pedal Fix - Clutch Cure

A Quick Fix For An Overly Stiff Pedal
By Tim Bernsau
Stiff Clutch Pedal Fix
Stiff Clutch Pedal Fix
This is what the clutch pedal... 
   
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Stiff Clutch Pedal Fix
This is what the clutch pedal linkage looked like before Wil started working on it.
Stiff Clutch Pedal Fix
The amount of pedal throw... 
   
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Stiff Clutch Pedal Fix
The amount of pedal throw and the pedal pressure is a result of the ratio between the longer upper arm and the short lower arm.
Stiff Clutch Pedal Fix
Another problem with this... 
   
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Stiff Clutch Pedal Fix
Another problem with this linkage was that the rod was positioned too close to the orange-colored clutch fork.
Stiff Clutch Pedal Fix
In order to figure out the... 
   
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Stiff Clutch Pedal Fix
In order to figure out the mechanical advantage of the unmodified piece, Wil measured the lengths of both arms.
Stiff Clutch Pedal Fix
The length of the upper arm,... 
   
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Stiff Clutch Pedal Fix
The length of the upper arm, from the pivot hole to the point where it curves to connect to the pedal is approximately 8 1/2 inches.
Stiff Clutch Pedal Fix
In order to move the rod farther... 
   
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Stiff Clutch Pedal Fix
In order to move the rod farther from the clutch fork, Wil replaced the 90-degree pin end of the rod with a yoke removed from the end of an extra master cylinder he had in the shop.
Stiff Clutch Pedal Fix
He used a cut-off wheel to... 
   
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Stiff Clutch Pedal Fix
He used a cut-off wheel to remove the end of the clutch linkage rod.
Stiff Clutch Pedal Fix
The finished piece looks a... 
   
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Stiff Clutch Pedal Fix
The finished piece looks a lot cleaner with the yoke end.
Stiff Clutch Pedal Fix
Meanwhile, over at the drill... 
   
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Stiff Clutch Pedal Fix
Meanwhile, over at the drill press, a hole was drilled in the lower arm of the clutch pedal assembly at the 1 1/2-inch mark, between the pivot hole and the original rod hole.
Stiff Clutch Pedal Fix
With the clutch pedal assembly... 
   
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Stiff Clutch Pedal Fix
With the clutch pedal assembly remounted into position, it's easy to see the significant difference in the position of the rod.
Stiff Clutch Pedal Fix
Relocating the rod to the... 
   
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Stiff Clutch Pedal Fix
Relocating the rod to the center hole of the lower arm provided just the right amount of pedal pressure and throw.
Stiff Clutch Pedal Fix
Assessing the situation, Wil... 
   
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Stiff Clutch Pedal Fix
Assessing the situation, Wil determined that the interfering corner could be notched without reducing the integrity of the part.
Sakowski Motors

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