Here's an update on my 1021cc.
I spent some time testing and tuning with my PET-2100DX this weekend. I'm currently running 125 Pilots, 132.5 Mains, 1.8 N&S, 80g Springs, 1/2 Turn out on high speed screws and 1 Turn out on low speed screws. My plugs are just starting to turn dark brown and the piston wash looks good (inspected with borescope).
I changed my reduction/steering nozzle combination from a 61X reduction nozzle @ 85mm w/stock steering nozzle to a 62T reduction nozzle @ 85mm with an aluminum 60E steering nozzle. I am running fixed trim with a modified OEM 08+ Superjet trim bracket that I machined a 10mm kidney shaped slot in so I can manually adjust the angle of the steering nozzle.
Today I did some short peak RPM runs, both with the 14/19 C75 Skat and with the 15/20 C75 Skat (which is actually a 16/20 on my pitch gage). I knew the 14/19 was spinning so I decided not to alter the pitch on 16/20. Before going back to the lake I was expecting a little better hookup on bottom end but at the expense of some peak RPM.
Well, the results were a little bit different from what I was expecting. The motor had no problem what so ever pulling the 16/20, right back up to 7900 RPM, and to my surprise this impeller is spinning a little bit down low as well. The hookup is substantially better than what I had with the 14/19 but I do not think this impeller is quite enough for this motor. I am going to try the standard length Solas pump cone in place of the Impros freestyle cone while I look at my other impeller options but a 148mm Mag pump may be my ultimate solution.
I continue to be amazed with the power this motor makes with the same bolt-on parts most of us already have. My plan was to use this motor in my superjet until I buy an aftermarket hull then transplant it into the new hull, but I don't think I can take this motor out of my superjet. Especially not after riding a 701 based superjet back to back with mine today. I think there will be another TPE motor going into my next project.
Eric.