Today's Message Index:
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1. 04:54 PM - Re: TeamGrumman-List Digest: 8 Msgs - 03/15/04 (Tiger67B)
2. 08:21 PM - Re: CHT PROBES (FLYaDIVE@aol.com)
Message 1
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| Subject: | Re: TeamGrumman-List Digest: 8 Msgs - 03/15/04 |
--> TeamGrumman-List message posted by: Tiger67B <jnpsavage@cox.net>
On some installations they will supply you with a thermocouple and 3
bayonets for picking up CHTS's.... and they warn you that
numbers can be very different.... when I put in my JPI, I made a point
of getting all the same (bayonets) temp pickups, with no
thermocouples...it came with at least one..
Jan Savage
Tiger 67B
>________________________________ Message 1 _____________________________________
>
>
>Time: 06:36:20 AM PST US
>From: "flyv35b" <flyv35b@ashcreekwireless.com>
>Subject: Re: TeamGrumman-List: Baffle adjustments
>
>--> TeamGrumman-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
>
>I'm sure Gary will have something to say about this, but 130+F variation
>between the front and rear cylinders is HUGH. I've never seen a plane with
>anywhere near that much variation.
>
>I'd take a close look at the rear baffles and the parts that wrap down under
>the cylinder barrel and head fins. The length of the head baffle is to long
>many times after someone has replaced it and it can restrict air flow. The
>head baffle should terminate at about the same location (clock position) as
>the barrel baffle. Some go so far you can even install a CHT probe.
>
>Of course there are several other areas that could be contributing to your
>high CHTs. Maybe something is wrong with the forward cylinder baffling and
>a lot of air is being "dumped" up at the front and thereby lowering the
>pressure and flow across the rear cylinders. Best get the problem resolved
>before the ambient temp gets warmer.
>
>Cliff A&P/IA
>
>
Message 2
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| Subject: | Re: rumman-List:CHT PROBES |
--> TeamGrumman-List message posted by: FLYaDIVE@aol.com
In a message dated 3/18/04 7:56:02 PM Eastern Standard Time,
jnpsavage@cox.net writes:
> --> TeamGrumman-List message posted by: Tiger67B <jnpsavage@cox.net>
>
> On some installations they will supply you with a thermocouple and 3
> bayonets for picking up CHTS's.... and they warn you that
> numbers can be very different.... when I put in my JPI, I made a point
> of getting all the same (bayonets) temp pickups, with no
> thermocouples...it came with at least one..
>
> Jan Savage
> Tiger 67B
================
Jan:
Could you explain further? What do you mean by "I made a point of getting
all the same (bayonets) temp pickups, with no thermocouples...it came with at
least one.."
Bayonet is the type of mount. Example: Bayonet and Ring/Gasket. Bayonet is
a misnomer it really is a threaded mount that screws into the cylinder head,
The Ring is a ring that fits under the spark plug. Which does not read CHT's as
accurate as a bayonet due to its location.
The both are thermocouples. It is called a thermocouple because of the
dissimilar metal junction that produces a voltage in correspondence to a
temperature.
Barry
"Chop'd Liver"
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