Another Webra 1.45 AAR Data Point

[Brian Young]

I wonder if the oil content of the 4-stroke had
something to do with it. Also, if you go full lean on
the ground it will lean a little more in the air.


--- RC Steve Sterling <rcsteve at tcrcm.org> wrote:
> I've been running 15% Cool Power all Synth in my
> Webra 1.45 (original carb)
> mounted in my Focus. Information received from this
> discussion group helped
> me tune through a rich midthrottle {lowered pump
> pressure 1/2 turn and
> lengthened pipe an inch). Been running great through
> the last week (took
> some days off to tune and practice).
> 
> First flight yesterday, she goes real rich on
> takeoff then flames out before
> I can get it back around. Ground tests showed I
> could keep it running
> through mid & full throttle only if I leaned the
> high end mixture to max
> rpm-- why too hot.
> 
> What had changed??  I had been running it on 15%
> Cool Power, ran out of
> that. Found some 20% Cool Power 4 stroke in the
> garage, and had put that in
> the can. Figured it would work OK with a retune, and
> had done that before
> the fateful takeoff. Guess that decision wasn't so
> good.
> 
> I found a gallon of Magnum #1. Drained the tank of
> the 20% 4 stroke and
> refilled with the #1. Cranked it back up. Ran like a
> top, great transition
> throughout the range. Able to richen up without
> problem. Flew today and it
> ran great.
> 
> If the symptoms sound familiar, try something like
> 15% all synth or Magnum
> #1.
> 
> 


=====
Brian Young
Tulsa
b4598070 at yahoo.com
918-745-6046h
918-838-0900w

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