godobcn(at)gmail.com
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 Posted: Sun Jun 29, 2014 3:50 am Post subject: New to Carb Synch in 912. Should Carbs behave the same at al |
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Hi,
After attending a couple of seminars and watching the videos, I felt I could run my firts Carb Synch...
I followed the manual and run first the mechanical adjustment followed by the pneumatic ones at 3000 rpm. All good here.
Issue came when, out of curiosity, I wanted to check if carbs would be balanced also at the high rpms when I would be flying, so I started adjusting, not for 3000 as per the manual, but playing up and down.
The thing is that, no matter which rpm I would synchronise for, the results would not be the same all way in the rest of the rpm, so I started to believe that I had a different behaviour in the carbs. I asked the shop that does usually my maintenance and both carbs were cleaned and needles changed 10 h ago.
So here I am, doubting if my readings are wrong, If I need to check again carbs or if I'm only good to build airframes, but unable to tune engines...
For those of you with more experience, any suggestion/comments pls
Thanks in advance
Godo
RV12 in Barcelona, Spain
Last data:
Rigth vs Left Carb mmH reading
4500 rpm +0.5 mm
4000 rpm +0.0 mm
3500 rpm -1.5 mm
3000 rpm -2.5 mm
2500 rpm -2.5 mm
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