Monday, August 20, 2012

New Camber Shims

Fitting the Shims
Wheel Alignment

Got a new design made up in the hopes of cancelling out the toe.
I have made rough calculations and believe for every 1mm in toe i require a degree change of .15038degrees.
hence the 4.5mm toe i have currently is approx .73689degrees.
Based on my 15" rim.

toe in degrees = arcsin[ (toe in mm of each wheel) / (wheel diam in mm) ]
if arcsin return radians therefore
 - radians to degrees = rad x 180/pi

Excel =DEGREES( ASIN( TOE_IN_MM / ( RIM_DIA_INCHES * 25.4 )))

I think my maths is right :)

Basically one design is slotted to allow rotation.
The other design had a bunch of wholes to allow for a 45degree rotation and a 90 degree rotation of the face which tapers at 1.5degrees.
I will pull out the micrometer and measure. See how all the measurements work (should be fun).

The shims were made by Kim owner of Tin Shed Machining. He does lathe and milling work for custom motorcycles and other small hobby jobs. If anyone needs his contact let me know. Great guy, easy to through ideas at. Next lil project once i have got rid of the rear toe will be some dog bones for bigger calipers.
Want to experiment with the evo brakes.



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