BobHH

My Feedback: (18)

Well, I’ve seen it all. Had a guy at the field this weekend doing some testing on his combat plane. He’s running a stock OS .25FX with a APC 8x6 prop. He was turning around 17,500 when I approached him. Then he pulled out a rare earth magnet and bolted it across the bottom of the crankcase using the same mounting bolts from the engine lugs. I thought he was adding some nose weight. Upon re-cranking his engine and leaning it out his RPM had jumped to 21,750 and he could pinch 22,500!!! I was a bit skeptical so I picked up my digital tach and was reading the same as his.

Amazing! I asked him what he did and his reply was he was balancing the crankshaft lob reciprocating motion with the magnet thus making the piston appear lighter and increasing the RPM. What do you guys think?[sm=72_72.gif]


Bob Harris

s. wallace

My Feedback: (24)

I think the date of this post says it all

daven

My Feedback: (1)

I agree, but good try

BarryReade

My Feedback: (1)

Can't say, it would be censored!!!

BobHH

My Feedback: (18)

Oh well, I tried[:-] We will discuss about degreeing in the crankshaft tomorrow!!

Bob Harris

vicman

My Feedback: (10)

I got that trick down. The hard part at the moment is deciding if I want to try to hide the evidence by discoloring the surface I cut. Shhh.

Back to work on my BS...er BuckShot.

daven

My Feedback: (1)

Bob,

If you get the angle correct to offset the balance of the crank, you will see an increase in RPM.

vicman

My Feedback: (10)

Dangit Dave!
I race against that guy, quit giving these NC boys any tricks.

j.gibson

DAMMIT Bobby, I told you to stop eating those mushrooms !!!!!!!!!

jmg