Re: Bowden cable fixation to throttle lever on carb
by Sean Griffin » 2 weeks ago
I much prefer setting my "hard" idle stop at the throttle control.
No chance of bending idle stops.
No chance of damaging cable.
Adjusts both carbs at the one point - no chance of out of balance idle stops.
Readily adjusted, at one point, for winter/summer idle speeds.
What's not to like? 😈
Re: Bowden cable fixation to throttle lever on carb
by Roger Lee » 2 weeks ago
Quote,
"I much prefer setting my "hard" idle stop at the throttle control."
This is the best way, but some don't have that option with a vernier throttle and they can pull back too hard and far and bend the idle stop plate.
Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell
Re: Bowden cable fixation to throttle lever on carb
by Sean Griffin » 2 weeks ago
Hi Roger,
"....some don't have that option with a vernier throttle and they can pull back too hard and far and bend the idle stop plate."
Thats too bad.
Speculation:
Once the carburettors have been synchronised/set up, the adjustment to prevent the possibility of over enthusiastic closing/idle/damage to stop, is very small.
Most throttle cables have a threaded fitting at the panel end .
It may be possible to make small changes, to the movement of the throttle, by using a thin nut to move the assembly in/out (fine adjustment), lock in position with the back nut.
Re: Bowden cable fixation to throttle lever on carb
by Roger Lee » 2 weeks ago
Hi Sean,
I use cable locks at the carb many times on certain aircraft because they don't have a stop in the cockpit. Vans RV12's uses them. Usually these are on Vernier throttle systems where you push and pull and pulling a little too hard can bend the idle stop plate and if you bend it a bit too much and shut the engine down..
Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell
Re: Bowden cable fixation to throttle lever on carb
by Sean Griffin » one week ago
Hi Roger.
I absolutely agree with having a hard stop before the carb idle stops - just speculating on the simplest/most convenient way to achieve an equal stop.
The above pictured is an example of a Vernier throttle, has a long threaded panel mount, that could easily be used to make small adjustments to the amount of available movement in the system.
I have a quadrant style throttle - for non contact with idle stops, winter/summer idle speed adjustment, I adjust the cable at the quadrant😈
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