Today's Message Index:
----------------------
1. 03:25 AM - Re: Carb Heat with 912ULS (Gtblu)
2. 05:39 AM - Re: Throttle Cables sticking (Gilles Thesee)
3. 02:47 PM - Re: Re: Carb Heat with 912ULS (jtortho@aol.com)
4. 06:10 PM - Re: Throttle Cables sticking (Steve Hagar)
5. 06:16 PM - Re: Re: Carb Heat with 912ULS (Evan Gardiner)
6. 06:28 PM - Re: Carb Heat with 912ULS (Gtblu)
7. 07:46 PM - Re: Re: Carb Heat with 912ULS (Evan Gardiner)
Message 1
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| Subject: | Re: Carb Heat with 912ULS |
Great post Evan.
RTVd???? What is that? Presume its attached to outside of throat somehow.
regards gtblu
--------
Slepcev Storch
912 uls 731 hours
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=161313#161313
Message 2
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| Subject: | Re: Throttle Cables sticking |
Rich & Sandy Schultz a crit :
> others have talked about going to a solid cable .055 or .078
> SS piano wire.
Relieving only on the carb throttle springs to overcome the cable
friction may prove troublesome. There have been cases of flexible cables
binding between trhottles and cable outer case, leaving the pilot with
no option when additional power is needed, despite a perfectly running
engine.
One needs a positive actuation of the carb throttle arms towards the
full throttle position.
This is why our project has piano wires, works great. To date 400+ MCR
kitplanes are flying with piano wires in place of stranded cables making
them a real push-pull device, with no reported problem whatsoever.
Some of them have logged more than 1000 flight hours to date.
> I have some concerns about the carburetor attachment point
> producing a stress crack and failing under the vibration. I am interested to
> hear what others have done?
>
Not sure what you fear. The throttle arm cable attachment is of the
swivel type. No bending there.
Best regards,
--
Gilles
http://contrails.free.fr
Message 3
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| Subject: | Re: Carb Heat with 912ULS |
I believe this has been mentioned in the distant past.? The concern was it just
doesn't draw enough current
for an appreciable warm generation.
http://www.ulparts.com/SearchResult.aspx?CategoryID=94
I once spoke to the shop, and they said "no body has complained about it not working.?
The leads are a bit fragile however."? Does anybody have any experience?
JIm Timoney
searey 912S-doing the plumbing
________________________________________________________________________
Message 4
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| Subject: | Throttle Cables sticking |
I have installed a Cessna Push pull vernier type throttle single cable up
into the engine compartment. Once there, it is split into two where the
normal motorcycle type cable that comes with the plane is used. Each
length of these is 18 inches or less long and is easily overcome by the
carberator springs.
Steve Hagar
A143
Mesa, AZ
> [Original Message]
> From: Rich & Sandy Schultz <TheSchultzFamily@comcast.net>
> To: <rotaxengines-list@matronics.com>
> Date: 1/28/2008 10:49:46 PM
> Subject: RotaxEngines-List: Throttle Cables sticking
>
<TheSchultzFamily@comcast.net>
>
>
> I am looking to see what others have done to prevent throttle cable bowing
> of the twisted wire used in most throttle cables. I have a 914 installed
on
> a Europa and am having problems with one of the cables wanting to bow in
the
> throttle box and not allowing me to get full power. The throttle springs
are
> not strong enough to pull the cable and keep it in tension all the time.
On
> the Europa form others have talked about going to a solid cable .055 or
.078
> SS piano wire. I have some concerns about the carburetor attachment point
> producing a stress crack and failing under the vibration. I am interested
to
> hear what others have done?
>
>
Message 5
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| Subject: | Re: Carb Heat with 912ULS |
Thanks! RTV is just a generic name for a silicone based sealant. Make sure
you choose a heat resistant type - usually colored red. There are several
different brands of exhaust system sealants or oil-pan gasket sealants out
there that will work.
Locate a part of the carb body close to the intake throat that provides a
secure position to secure the temp probe. Place the probe against the carb
body and apply a liberal coating of RTV over the top of the probe and the
carb body to hold it in place. Leave 24 hrs. to allow the RTV to cure.
Cheers,
Evan Gardiner
----- Original Message -----
From: "Gtblu" <gtbjbell@gmail.com>
Sent: Thursday, January 31, 2008 12:22 AM
Subject: RotaxEngines-List: Re: Carb Heat with 912ULS
>
> Great post Evan.
> RTVd???? What is that? Presume its attached to outside of throat somehow.
>
> regards gtblu
>
> --------
> Slepcev Storch
> 912 uls 731 hours
>
--
Message 6
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| Subject: | Re: Carb Heat with 912ULS |
Good one. I've got some in the hangar. Did you put another probe onto the thermometer
or did it already have two "externals". I f so what breed are they.. I
have only seen indoor/outdoor with one internal probe and one extended external.
--------
Slepcev Storch
912 uls 731 hours
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=161465#161465
Message 7
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| Subject: | Re: Carb Heat with 912ULS |
The one I used was made in China and has '2 channels in/out temp' on the
front panel. Powered by a flat circular battery similar to a watch battery.
The thing is that this unit (and probably most other similar products) have
only one external lead so the outside temp can be read and transfered to the
unit. The indoor temp is read from the units internal sensor. You need to
solder a lead long enough to glue the other end of the lead to the carb
body. It is a few years ago since I did this and I do not remember it being
a difficult task or needing a thermocouple lead or anything fancy. But that
may depend on the unit you choose.
Good luck,
Evan Gardiner
MCR 01 ULC 413 hrs.
Sent: Thursday, January 31, 2008 3:26 PM
Subject: RotaxEngines-List: Re: Carb Heat with 912ULS
>
> Good one. I've got some in the hangar. Did you put another probe onto the
> thermometer or did it already have two "externals". I f so what breed are
> they.. I have only seen indoor/outdoor with one internal probe and one
> extended external.
>
> --------
> Slepcev Storch
> 912 uls 731 hours
>
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