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Old 06-08-2018, 07:20 AM
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DanH DanH is online now
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Originally Posted by rvbuilder2002 View Post
Personally I don't consider EGT as a reliable indication of carb. synch/balance.
Originally Posted by RFSchaller View Post
Above about 4000 RPM the intake manifolds will have the same pressure unless your throttle cables are completely out of whack, so I would not expect cruise RPM to be a good indicator of synchronization.
Ditto and ditto. Sync is mostly about low throttle openings. Sync 'em on the idle stops, then sync cable lift.

Back in the day a BMW airhead with CV Bings was synced by ear, and with an index finger on the cables. Not saying you can do the idle stops on a Rotax by ear, but I don't doubt that a fella can get the cable sync real close with a manual method.
Dan Horton
Barrett IO-390
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