Q-500 Racing Discuss AMA 428, AMA 424, and any other variants of Quickie 500 racing

thinning of in a turn

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Old 03-16-2012, 02:03 PM
  #1
cocmotor
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Default thinning of in a turn

hello all
how to solve the problem of thinning of in a turn?
I use g 500 engine with 9 mm venturi
Thanks Franc
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Old 03-16-2012, 03:18 PM
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djlyon
 
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Default RE: thinning of in a turn

Hi Franc
To prevent confusion we say "leaning out" not "thinning of"

If you are not using a Tettra tank Or Jett tank (bubble-less/bladder tank)do so. You will find that that will help.

Denis
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Old 03-16-2012, 03:59 PM
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Default RE: thinning of in a turn

Can you rotate your engine mount to lower the intake any? How about raising the tank? That and the jett or tettra bladder tank should help. If thats not enough you may have to launch the plane a little mote rich to start with
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Old 03-16-2012, 04:15 PM
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speedracerntrixie
 
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Default RE: thinning of in a turn

You may have fuel foaming issues. Check for vibration
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Old 03-18-2012, 09:39 AM
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cocmotor
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Default RE: thinning of in a turn

The tank is tettra bladder, 150cc / 6 oz i have already done launch the plane a little mote rich to start with, still does not work !!!

my English is very low!!!!!!! ...........Can you rotate your engine mount to lower the intake any........ tank mean higher engine?
thanks Frank
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Old 03-18-2012, 10:15 AM
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GSJames
 
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Default RE: thinning of in a turn


Quote:
ORIGINAL: cocmotor

The tank is tettra bladder, 150cc / 6 oz i have already done launch the plane a little mote rich to start with, still does not work !!!

my English is very low!!!!!!! ...........Can you rotate your engine mount to lower the intake any........ tank mean higher engine?
thanks Frank
Make engine carburetor lower than tank
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Old 03-18-2012, 05:29 PM
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Default RE: thinning of in a turn

Just do what every racer at any pylon race would do - open the needle valve more. Don't worry about foaming, how high or low the tank is, etc.

Kurt
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