Relentless
Registered User
San Luis Obispo, CA (for now)
One of the most asked questions about our new cylinders is concerning the sleeve. The sleeve is made of aluminum not steel and is coated with a very hard Nykasil Carbide coating. We could have just coated the cylinder bore itself but felt that for a few extra bucks a removable sleeve would be give us more flexibility for design changes and maintenance. If the bore ever gets damaged it is quite easy to remove the sleeve and insert a new or reconditioned one. Why aluminum? Now everything in the cylinder is one material which means we can close down tolerances to levels consistent with modern engine design. Less blow-by, lower oil consumption, better heat dispersion, and increased efficiency of chamber.
Here is sleeve by itself:
Installed:
Note the edge of sleeve, allows a mechanical lock when bolted to case:
Simple drawing how the rings actually ride on the carbide particles held in place by Nickel coating:
Here is sleeve by itself:
Installed:
Note the edge of sleeve, allows a mechanical lock when bolted to case:
Simple drawing how the rings actually ride on the carbide particles held in place by Nickel coating: