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It is often stated in the various articles on brakes that you must check that the outer spade of the shaft should be at 90 degrees the king pin axis in order to avoid having the inner wheel brake from being brought on when you put it on full lock. My simple question is why?
I thought the point of the design of the system with the spherical joint mounted over the king pin axis was to prevent this inner wheel braking on full lock from occurring. Indeed if this 90 degree is critical then it follows that any braking when the steering is applied will be very dangerous as the outer spade cannot be at 90 degrees and this will cause the inner brake to be brought on harder than the outer brake on cornering and braking.
It is clearly fundamental that the spherical joint must be properly lubricated with no solidified grease, grit or dust otherwise this will prevent the necessary free movement of the various surfaces. If the joint is 'tight' then this will mean alignment of the joint will not be correct giving rise to the inner brake being operated on full lock.
The CT document on setting the brake linkages makes the point that on the rear brakes once the system has been set up the clevis fork on the operating rod must be screwed up by 2 full turns from the position where the pin fits without moving the lever. For the front brakes the same point is made for the two front rods that they must also be tightened up from the zero position. In both cases this is to ensure that any play in the cam operating system is taken up.
Had anyone determined how much the Perrot shaft actually rotates before the shoe begins to move?
I thought the point of the design of the system with the spherical joint mounted over the king pin axis was to prevent this inner wheel braking on full lock from occurring. Indeed if this 90 degree is critical then it follows that any braking when the steering is applied will be very dangerous as the outer spade cannot be at 90 degrees and this will cause the inner brake to be brought on harder than the outer brake on cornering and braking.
It is clearly fundamental that the spherical joint must be properly lubricated with no solidified grease, grit or dust otherwise this will prevent the necessary free movement of the various surfaces. If the joint is 'tight' then this will mean alignment of the joint will not be correct giving rise to the inner brake being operated on full lock.
The CT document on setting the brake linkages makes the point that on the rear brakes once the system has been set up the clevis fork on the operating rod must be screwed up by 2 full turns from the position where the pin fits without moving the lever. For the front brakes the same point is made for the two front rods that they must also be tightened up from the zero position. In both cases this is to ensure that any play in the cam operating system is taken up.
Had anyone determined how much the Perrot shaft actually rotates before the shoe begins to move?
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