Today's Message Index:
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1. 02:32 AM - Idle adjustment (Paul Munford)
2. 08:12 AM - Re: Idle adjustment (JonathanMilbank)
3. 10:20 AM - Water Drain (Matt Dovey)
4. 12:45 PM - Voltage regulator connection (Paul M 383)
5. 11:31 PM - Re: Voltage regulator connection (Alan Burrill)
Message 1
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Hi Everyone,
Advice on how to adjust the idle speed on my 912ULS please.
The engine is 4yrs since installation with about 80 hours running time.
Runs good as gold but recently noticed idle speed is up to 1800/1900 rpm
!
Do I adjust this by simply repositioning the throttle cable (quite
possibly stretched now) or can it be adjusted by a screw on the carb ?
Thankyou Paul Munford G-OVPM
Message 2
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Subject: | Re: Idle adjustment |
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
Message 3
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Does anyone know if there is an alternative to Mod 33 water drain valves mod? For
what ever reason my aircraft has never had the mod done even though its been
run on Mogas. I want to add drain valves but not keen on Mod 33
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=501799#501799
Message 4
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Subject: | Voltage regulator connection |
Has anybody seen this voltage regulator connection issue? One of the yellow generator
connectors has clearly got hot and is too close to its slot in the plug.
It's definitely melted, not vibration or mechanical abrasion and looks like it's
simply too close to the edge of its slot in the plug.
How to avoid re-occurrence?
(Apologies for the first image - auto focus [Rolling Eyes] )
Many thanks in advance,
Paul M
XS Mono 912 ULS
G-PLPM
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=501802#501802
Attachments:
http://forums.matronics.com//files/20210509_125502_121.jpg
http://forums.matronics.com//files/20210509_125515_458.jpg
http://forums.matronics.com//files/20210509_125602_346.jpg
Message 5
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Subject: | Re: Voltage regulator connection |
Most overheating at joints or connectors is due to contact resistance.
This could be a loose fit of the connector on the spade or poor crimp joint on
the wire. Might even be due to the connector spade going down the side of the
connector rather than between the tangs of the connector if its loose in the holder.
Alan
G-OBJT
Sent from my iPad
> On 9 May 2021, at 20:47, Paul M 383 <europaul383@hotmail.com> wrote:
>
>
> Has anybody seen this voltage regulator connection issue? One of the yellow generator
connectors has clearly got hot and is too close to its slot in the plug.
>
> It's definitely melted, not vibration or mechanical abrasion and looks like it's
simply too close to the edge of its slot in the plug.
>
> How to avoid re-occurrence?
>
> (Apologies for the first image - auto focus [Rolling Eyes] )
>
> Many thanks in advance,
>
> Paul M
> XS Mono 912 ULS
> G-PLPM
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=501802#501802
>
>
>
>
> Attachments:
>
> http://forums.matronics.com//files/20210509_125502_121.jpg
> http://forums.matronics.com//files/20210509_125515_458.jpg
> http://forums.matronics.com//files/20210509_125602_346.jpg
>
>
>
>
>
>
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