A few tach numbers from the BME 110 and 55cc prototypes.

55- menz-s 24-8 @ 6200
Mejzlik 22-10 @ 7800
Bolly 19-8 @ 10,250 ! ! ! !

Seems the Bolly was a test to see of a rod or crank would let go. . .Apparently the engine is going to be turbine-safety certified.

ON a side note, the ASPCA has requested that future mega-rpm tests be done in an an-echoic chamber to prevent eardrum damage and psychological distress for all dogs within a 5-mile radius.

Final weight for the 55, without ignition or muffler, is now set in stone at 2 lbs 1 ounce, and the crankshaft balance parameters are finalized so production can now carry forward.

On the 110, the projected cylinder/piston production schedule is on track, and should arrive in the latter half of the month.

Power figures are now consistent on the prototypes with the engines spinning a Menz-s 28-10 at 6300 after warmup and the Mejzlik 28-10 in excess of 6700 (these figures are HOT engines). Power figures with tuned cansiter exhausts would improve 300-400 rpm depending on prop loading and design.

An evaluation of the current CH ignitions showed an inconsistency in timing retard at lower rpms, leading to development of a more consistent advance logarithm embedded in the timing chips. This should improve low-rpm smoothness and give the BME an even smoother transition than before.

I have 2 of the Xtremes on order. . would make a nice 4th of July fireworks display to fire both of them up on the back deck at the same time.