Carb Balancing On The 900ss

I spent ages tuning the carbs on the Darmah using a similar set of dial gauges & quite frankly they were rubbish.

Yes, they were old, but the needles bounced around and swapping them over showed they gave different readings.

So bugger the expense & bought a £70 twin Morgan tune kit. Accurate, much easier to read, protective case & 5 mins later carbs done and engine running as smooth as.

https://www.ebay.co.uk/itm/352772421566

 

ck_uk,
I have the same twin gauge set. I tried to balance off the bike before installing using something of same thickness under butterfly. When I came to check with vacuum gauges they were pretty much spot on.
There is a small restrictor screw to stop the gauges jumping around which worked OK. I did not swap gauges over though. I think one thing is not to bother about the numbers too much just that they are the same.
I am glad I did not have to adjust because it looks a pig to get in with screwdriver.
I generally buy the best I can afford, at the time did not have that much to chuck at gauges.

Cheers Gaz

 

@Guillaume69 has posted some very useful stuff about carb tuning

https://www.ducatiforum.co.uk/threads/1989-900-supersport-in-france.95284/page-7#post-2099542

PS- I reckon Carbtune gauges are good , but the modern ones now have the mercury replaced
with metal rods ..... not quite as good .

 

I have a morgantune too. Highly recommend

 

I've had a Morgan carbtune with the metal rods for about 25years . Brilliant piece of kit, worth every penny.

 

I have just used a set of those gauges to balance my Monster carbs, one thing to be wary of is their calibration to each other might be out. I tee'd mine together with a vacuum pump and found they weren't reading the same. There is a calibration screw on the dial so it can be corrected

 

old fashioned, outdated mercury carb stix here, work perfectly

 

That's beautiful
Must be a few years old?