Ira
Are you not monitoring the VDO probes with your EFIS because they are
ungrounded probes?
I am hoping that changing the VDO probes to Westach grounded
alternatives (which fit the holes in the head) will work. They
certainly read on the EFIS but we haven't had the engine running yet.
regards
Paul
On 9 Apr 2008, at 13:49, rampil wrote:
>
> I finally completed my cylinder head temp monitoring system so now
> I have 3 sites of measurement: Regular Rotax VDO probes into
> the heads of Cylinders 2, 3 going to an analog gauge;
> Ring-type CHTs installed under the Rotax CHT probes and monitored by
> my Blue Mountain EFIS, and finally the Lockwood/Rotax coolant temp
> probe with a Blue Mountain probe going into the EFIS.
>
> So far, I have only done cowl-off, static testing but the results are
> interesting:
> The coolant temp at 4000 rpm is 20F higher than the Rotax/VDO
> which is about 20F higher than the ring probes outside the block.
>
> These will probably change when cowled and at cruise and climb which
> I plan to test when I return from SnF.
>
> --------
> Ira N224XS
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=175679#175679
>
>
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