Checking prop tracking today with a piece of paper ruler and a sharp pencil; the
maintenance cradle worked a treat holding the airframe still. Everything was
within spec except the clamping bolt tension; previous owner left them fairly
loose or simply forgot to retention them; no more airframe items now remaining
left unchecked... also noticed a balance master has been fitted by original
builder; awesome!!! no need to buy one!!
Next was checking carburettor balancing... discovered this was the cause of
vibration
the other day... pulled the lid off the engine bay, walked 181 out to the
ramp, reversed the truck up to the tail and lashed it to the towbar and fired
up the 912 and got stuck into tuning the carbs old school style with a piece
of 1/4" vacuum hose stuck in my ear and the other end at the carburettor
piston...
quick adjustment of a throttle cable and engine was running like silk again;
all the way down to 600rpm through to 3500rpm... problem gone away...
Ready to get back up into the sky and start setting up the airmaster csp
assembly
that arrived last week.
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http://forums.matronics.com/viewtopic.php?p=507422#507422
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