Dave
I was amassed how sensitive the adjustment is. I did the work using a
mercury manometer I got at a motorcycle shop.
If your gauges and hoses are not bypassing air, then with it all back
normal, it should be exactly the same. I used "O" rings on the screw in
nipples I used to connect my hoses. My adjustment was so smooth it was hard
to tell it was running.
The throttle cables do make a difference. I had one bind slightly and I
could see the whole thing flex a little and that made the manometer show a
variation. I slacked off the clamp a little and things where back to smooth.
PS: congratulation on climbing so high !!!! it helps when you take off half
way up.
Cliff Shaw
1041 Euclid ave.
Edmonds, WA 98020
425 776 5555
----- Original Message -----
From: "Dave Anderson" <dja767@charter.net>
Subject: Europa-List: Carb Balancing
>
> A quick question on balancing.
>
> I have balanced the carbs numerous times with a twin engine MP gauge. When
> the balance tube is disconnected, the engine obviously runs rougher. At
> one point in the balancing process, I started the engine and it ran very
> smoothly, but the MP gauge still showed a split. Matching the readings on
> the gauge made it run rougher - but that improved with the balance tube
> connected. The engine shakes passing through about 2600 RPM - smooth above
> and below. It seems like balance - the mags have no effect on the
> smoothness.
>
> My guess is that either I have a miss match in mixture as well, or the
> technique I am using is not right.
>
> Here is the question: Should the engine run the smoothest when doing the
> balance with the balance tube disconnected and the carbs are well matched?
> What have others found.
>
> BTW - I flew the Mini U2 today up to 20,000 feet. With the 914 engine, the
> climb rate solo was still 900 FPM at 20,000 feet. You gotta like that!
>
> Dave
> A227 Mini U2
> 261TT
>
>
>
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