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TEMAC Race Series > Piker Class Racing

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Michael:
After doing OK in the EF1 races in Orangeville in late summer, I was disappointed in my crash of my Shoestring after 3 years of no problems, in a simple sport flight. I took the guts from that plane and transplanted then into my new kit-built Sig Kobra, and I was uncertain about my future participation in EF1 racing.

Well, at our January meeting/auction/swap-meet, I bought a nicely built and fully equipped Scarlet Screamer EF1 racer from Octagon. (I think it was built by Ken Fluney. I have since bound it to my transmitter, re-installed the motor (there was a bit of up-thrust), and tightened things up. I still need to adjust the throws (suggestions are welcome) and install a pilot.

Right now it has a 9/4.3 prop with which Rob was flying. I'll use that in test flights and for trimming, and then I'll switch to an 8/8 prop.

It seems a bit nose heavy. Is that a problem?

Frank v B:
Michael,

re:"It seems a bit nose heavy. Is that a problem?"

My personal opinion- the faster the plane, the more nose-heavy I make it (ahead of the spar).  There is nothing tougher than controlling squirrily plane at 150 km/h.  I have 3 planes with EF-1 motors and all 3 are nose-heavy.  Any squirrily flying is the fault of the guy at the sticks. ;D

Better check with Ken F and Corey for the definitive answer.

FWIW.

Frank

Polecat:
Frank
Some guy's play around with the CG to get the plane to perform little better. Its better to have the plane a little nose heavy for the first few trim flights and adjust the CG from testing.
A nose heavy airplane will drop in a tite turn at no. 1 pylon and tail heavy could be big trouble.

Ken

Andy Hoffer:

--- Quote from: Polecat on February 05, 2018, 11:09:59 AM ---Frank
Some guy's play around with the CG to get the plane to perform little better. Its better to have the plane a little nose heavy for the first few trim flights and adjust the CG from testing.
A nose heavy airplane will drop in a tite turn at no. 1 pylon and tail heavy could be big trouble.

Ken

--- End quote ---

I'll bet @Frank v B could write an encyclopedia on nose-heavy planes dropping!!!  ;D

ANDY

Frank v B:
Andy,

re:"I'll bet @Frank v B could write an encyclopedia on nose-heavy planes dropping!!!  ;D"


Gotta be good at something!! 
"Dropping" must be a slow and controlled version of"planting" :D

Frank

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