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Thread: P11 Motion Ratios

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2016-05-26 17:43:00
P11 Motion Ratios
Finally got around to measuring the motion ratios, with how easy this was I really should have done this last year.

First measured the height with full weight on the wheels, this is the zero point.

Then used the stock shock I had laying around, I didn't have any top hats so used my rear flat top hats, which also gave it an angel (similar to how my FA500's tilt, so win win).

Set the suspension to the zero point, made marks on the ground and on the hub to make sure I used the same spots consistently.

Next I measured the spring perch to top perch, can barely see the perch

I measured from 0 to +2 and from 0 to -2, I should have measured from -2 to +2, but oh well I feel like the measurements are good enough as is.
0 to -2": 0.94
0 to -1": 0.96
0 to +1": 0.92
0 to +2": 0.94
Average: 0.94

It's not that far from 1:1, but when you have pretty stiff springs it makes a big difference, my 8k (448lbs) front springs are effectively 6.9k (387lbs), loosing 1.1kg/mm is quite a bit.
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