david mccandless wrote:

Hi to all, has anyone ever considered ball-milling out the apex seal grooves and pressing in a round tough steel insert and then milling the seal slot in the steel insert. This would then be' horse shoe' cross section, so to speak. The corner button seals could also fit into the ends. Maybe a new rotor would be cheaper, but this may have better reliability and longer life. FWIW, Dave Mc
On 24/04/2005, at 5:24 AM, Ed Anderson wrote:

Sounds expensive.  And how will you keep the insert from flying out of the rotor as centripetal force tries to fling it out at 2000RPM?
****Hi Ernest, I think you mean centrifugal force; and if the slot was ball-milled, the insert would be captured by both "claws" of the milled channel; also, just like the seals, the rotor housing would contain the whole assembly. Anyway, I think your comments about 400hrs/ 5 years makes much more sense in the overall scheme of things. BR,Dave McC