Quote:Ah ok, looks GREAT! I had a Probike digital balance but sold it through lack of use, now back on old gauges well I say old, carbtune. Interesting project you've made! What's with the bottles? woooosh..Â
http://probike.co.uk/it060008.htm
The two tall bottles are shown pre carb balancer. They are now half filled with red auto transmission fluid, linked with pipes and are air tight save for the tubes to each carb,
The object of the exercise is to get the fluid levels in both bottles to stop moving. It doesn't matter whether the levels don't match. So long as the fluid surface area in each bottle is the same, if the levels stay stable, it means that the vacuum either side is the same.
The bottle cross section has to be identical through the height of the vessel. A smaller cross section = greater sensitivity. So it helps if the bottles are tall too, so that you get a breathing space.
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You won't get a more accurate means of balancing a vacuum, which is why I checked the digital setup against these babies.
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When I've finished I leave the engine running and walk away for 5 minutes. If the levels are stable within a gnats, then I gauge that as a success.
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Seen these ?
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synX - Der Synchrontester (Carbs sync tool)

