balancing 503 carbs

[dickoreilly]

Hi guys.

I'm still looking for advice on balancing the dual carbs on my 503. Doing it by
eyeball seems crude, but I don't see any way to do it with the engine running
and a CarbMate or similar attached. At least not without removing the prop and I
don't know if it is okay to run the engine without the prop attached.

Also seems like a big job to remove the prop.

Would like to hear how others do it.

Thanks.
 Dick O'Reilly

[rileywinglowe]

Dick, I was listening for answers to your question as well. I have thought the same thing. I hear the HKS guys feel that carb balancing is real critical on those engines, but how about a 503 on a Gull? Unlike a tractor setup, you can't get near the thing when it is running.

I would not do it with the prop off. I don't see how it can run right without the flywheel effect, and it sure won't idle properly.

Riley

[earthstaraircraft]

In a message dated 12/6/2011 10:50:04 AM Pacific Standard Time,
dickoreilly@yahoo.com writes:


I'm still looking for advice on balancing the dual carbs on my 503. Doing
it by eyeball seems crude, but I don't see any way to do it with the engine
running and a CarbMate or similar attached. At least not without removing
the prop and I don't know if it is okay to run the engine without the prop
attached.

Also seems like a big job to remove the prop.

Would like to hear how others do it.

Thanks.

Dick O'Reilly


Hi Dick
I just raise the carb pistons with the throttle till they ate at the top of
the bore and than adjust the throttle cable on the carb that is to low to
match the one that is in the right place. You can feel a couple of
thousands of an inch differance with your finger. this is all it takes to set your
throttle pistons.
Happy Flying
Mark

[dickoreilly]

Mark, Thanks. Simplicity. Again. I love it.
 Dick O'Reilly