Here are some parameters for the old donuts on my plane: Cylindrical with equatorial bulge, 3" Primary OD, 3.3" Equatorial OD, 1.25" ID, .91" THK, Durometer 60A, Molded Black Elastomer
The new donuts available from Univair are :Cylindrical, 3" OD, 1.25" ID, 1.0 THK, Durometer 70A, Cut from Cast Black Elastomer Rod
Are there any sources for the old style donut?
Does anyone have an unused donut of the old style? This is the style with the equatorial bulge on it. I would like to know if they are molded 1" thick like the new Univair ones and took at set over time or if they are molded at .91" thick like the one I measured from my plane.
I am looking to make my own donuts and replace one donut per shock strut with a 50A donut. The idea is that this will create a dual rate spring with better low end shock absorbtion.
Thanks,
Glenn
The new donuts available from Univair are :Cylindrical, 3" OD, 1.25" ID, 1.0 THK, Durometer 70A, Cut from Cast Black Elastomer Rod
Are there any sources for the old style donut?
Does anyone have an unused donut of the old style? This is the style with the equatorial bulge on it. I would like to know if they are molded 1" thick like the new Univair ones and took at set over time or if they are molded at .91" thick like the one I measured from my plane.
I am looking to make my own donuts and replace one donut per shock strut with a 50A donut. The idea is that this will create a dual rate spring with better low end shock absorbtion.
Thanks,
Glenn
