aTOMic

Has a little insight into how/why our suspension compressors work.
One of these days I'm going to order a couple kits, one for me and one for whomever needs one quick in the states.

For those who don't know, he makes a carefully researched replacement ring.

I didn't know he even had a site, let alone a video. Yes, I agree; he should be a forum sponsor.
-Tom

mishar

This guy is missing important thing. Piston ring is not tapered as hi said. Its outer surface is a sphere segment because piston is swiveling while going up and down. His ring has cylindrical outer surface. It easily brakes because it is mostly running on its edges.

Yes, he should be sponsor. He might learn something here.

aTOMic

IIRC from his extensive posts on the AR forums regarding material and shape, the ring he sells HAS a radius - i.e., not cylindrical. In the video he mentions that the cylinder bore is tapered, perhaps that's to what you are referring Misha. I that's true, it's beyond my understanding.

mishar

One I saw earlier was all cylindrical. May be he improved it. Check the beginning of the 4th minute about tapered old ring.