Hello Paul,
First I would suggest that you refer to Europa Mod.20 Throttle Closed Stop. If
I recall correctly, this mod is intended to prevent strain on the 2 throttle
cables
by creating a physical barrier in the cockpit, on top of the tunnel and
at the rearward limit of travel of the throttle lever.
I deliberately made my cockpit throttle stop adjustable and also screwed back
the
idle speed adjusters on the two carburettors so that they don't have any role
in adjusting idle speed. My adjuster is simply a penny washer with an eccentric
hole through which the rear screw holding down the slotted throttle guide
plate is fastened. To adjust idle speed, I slightly loosen the screw and rotate
the penny washer as needed to alter the rearward throttle limit, before locking
the screw again.
But you should check the balance of your two carburettors with some good device
like a CarbMate. Usually it can be seen that the two carburettors aren't idling
exactly the same, so if you want a slower idle then use the cable adjusters
where the cable outer sheaths meet the carburettors and take whichever
carburettor
is "higher" down slightly. Or vice versa if you want a higher idle speed.
It can be a bit fiddly, but the end result should be that your carburettors are
synchronised and the idle speed is what is desired when the throttle lever in
the cockpit is fully back against the stop. Thus also no strain on the cables.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=501796#501796
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