914 Suspension motion ratios, Comparing notes Options

[groot]

I measured my front and rear motion ratios yesterday and wanted to compare notes with any that have done the same.

For the rear suspension I took ~20 data points and did a best fit analysis to come up with 1.00 to 1.00 damper travel to wheel travel with strong statistical correlation.

My front geometry is a bit different than a standard 914, so the motion ratio should be different, too. I measure ~10 points and found 0.83 damper travel to wheel travel, again with strong statistical correlation.

I'm about to order my rear shocks and this is one of the bits of data they need to build the shocks.

[groot]

Oh, I know what you're talking about now. Those eccentrics are used quite often on cars these days, when they care about adjustment. My Focus had them on the rear suspension links. They are very common on Mazda cars, since Mazda designs in adjustability.

With longer lower control arms, you actually have to move the mount a fair bit (at least an inch) to get the desired effect.

I thought you were talking about the screw adjustors that are used to adjust chain tension. My bad.

BTW... BMW has some morphed version of a swing arm on their bikes. It's quite intriguing.