Makr

I am interested. Is there a way to talk to you?

This new powdered wonder metal has half the tensile strenght of 7075 aluminum, and slightly higher hot working stenght. Dont get your hopes up on this one for any aplication on a Banshee. Square peg, meet round hole.

What a bunch of elitist nonsense.

Hey Brandon, I suck at the phone. Text me and I will call you back. I dont run at .02 squish, but I have no idea how else to check dynamic stretch other than seeing a witness from a running engine.

I hate to see some good thinking slide into oblivion, so I will throw in. THE358BANSH, your numbers look good to me on your cut dome. I drew it as a solid model in solidworks and came up with pretty close numbers. 120mm radius with .160 from the peak. 18.399 grams and a volume of .413 ci. .413 x 16.387 = 6.767 cc I am sure there is a variance in dome profile from your piston to my drawing that would explain the minor differing in values. This dome has a weird radius but I drew it to compare numbers. I plugged in the exact dimensions from your drawing. .495 ci = 8.11 cc So my question is: what values are you guys shooting for in compression and squish velocity? Are you setting a standard at static? Do you do a comparison to what you think is happening at different RPM ranges? Seems to me there would be drastic changes in both compression and squish velocity as the rod/crank/piston stretch at different RPMs. The pistons just start to leave marks on the combustion chamber on my RD400 at 10,000 RPM with squish at .02.