My Whiplash motor...a closer inspection

I took a look at my TRM270TT (Zenoah) motor last night. I removed the muffler and spark plug. The piston, ring, and cylinder wall looks great! No scaring, scratches, burns, etc., it looks brand new inside, well the piston and cylinder wall. The top of the piston looks great for running rich. It has a slight brown/black tint to it. It looks as if it was run, but not long.

The rest of the motor (the case) is in great shape, no cracks...

A deeper look into the damage on my Whiplash…

Starting with the head… The rotor head is fairly tough; I bent one control arm on the blade grip. The spindle/feathering shaft, dampers, blade grips, and head is fine. Mainshaft bent bad, mainshaft bearings (3) notchy, main gear trashed.

I pulled the motor expecting to find a mess inside…and I wasn’t disappointed! The pinion was glued onto the bell from the baked grease. The sprag bearing was heavily tempered, it looked...

Happy April's Fools day!

My Whiplash disaster...
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Saturday morning...57 degrees, sunny, light and variable.

Flight #29, Friday, I finished the gallon of synthetic mix at 32:1...per Toxic Al. Started a new gallon mixed at 40:1 with some bubble gum fragrance. I was somewhat surprised the motor ran rather well with a thinner oil mix. The flight went really well and relaxed some and just had fun.

Second...

Thursday, 48 degrees, winds light and variable, sunny…not a cloud in the sky!


Yesterday after work, I put in another 4 flights on my Whiplash. I leaned the high needle just a little and increased the throttle curve some. Now my Whiplash is rock’n! Most of the maneuvers I did didn’t bother the motor much except for full throttle climbs and side tic toc’s. I have a slight problem with collective management on side tic toc’s, and I need to look into an over-rev issue. Possibly...

Saturday...went out again. Temps 41 degrees, wind light and variable.

Did my normal routine...warmed up on the first flight, second flight I let it rip! Third flight I started in on my practice routine.

On the third flight, I turned the high needle in a blades width and that motor is just "smoke'n". It is making even more power! I went into my throttle curves and brought the normal down, it was too high...maybe 1900+ I'm guessing...(normal curve 0,23,38,50,100)....