Dennis.Kirby(at)kirtland.
Guest
|
 Posted: Mon Jul 28, 2008 1:00 pm Post subject: Balanced 912 Carbs |
 |
|
Kolb Friends -
I just finished an annual condition inspection, and I flew my Mark-3
this past weekend. It was the first flight in several months following
several mods and upgrades, and the first time since doing a Pneumatic
Synchronization (balance) on the Bing-64 carburetors. All went well
with the FCF - the 912 still runs perfectly. A friend of mine let me
use his synch tool (2 vacuum gauges and connect hoses, $80 at Lockwood)
and stepped me thru the process. While I always try to ensure the
mechanical synch of my carbs is exact, I had never done the vacuum synch
since I've owned this engine.
The only noticeable difference is that the idle is now smoother (1800
rpm) than before. And although my 912ul never seemed like is was
running "off" or "badly," the difference in vacuum that the carbs were
making at the various RPMs was a real eye-opener (before adjustment).
At both idle and mid range power settings, the vacuum readings for the 2
carburetors were pretty widely divergent. The synch process adjusts the
individual throttle settings to bring those vacuum readings back to
"balanced" values, or very close to it.
Anyway - I'm glad I did it. Although I can't really detect that the
engine runs better, my mind is at peace knowing that the two banks of my
engine aren't "fighting" each other for pneumatic balance, but rather
are working together at the same manifold pressure. I think I'll buy
the synch kit for myself, and do this at every annual. It was pretty
easy.
Dennis Kirby
Mark-3, "Magic Bike"
Cedar Crest, NM
| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kolb-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
