A new addition to the venerable old Fox Stunt 35 stable of "after market" items by the Fox Mfg Co is a Ceramic Piston/Liner assembly that also includes the rod wrist pin and Circlips all preassembled. I immediately purchased one and put it into an OLD (1952) sample engine. I ran the engine with the steel/iron stock setup on the test bench and with my prop/fuel setup it turned 9800 rpm. I then swapped out the Piston/cylinder assembly and installed the new Ceramic assembly. on the same engine setup and fuel/prop it then turned 10800 RPM. both RPM checks were in the HARD Four cycle mode (stunt setting). 5% nitro and 29% castor oil.
The engine restarted hot very well and had considerably less vibration than the Steel/iron setup.
Oil residue came out clear from the very first turn.
Bigiron
OH
I forgot--- On that engine, with the new ceramic setup, the ready to run (less prop) weight checked out at less than 5.7 ounces.
I am going to order some more--- suggested retail price--- $70.00 Part number 35052