Richard,
Thanks for the information. I am currently using both CHT and water
temp. The WT probe, as you recommend, is tapped into the reservoir
outlet hose, via 1" "T". It reads from 190 degrees to 220 degrees,
depending on the circumstances. The CHT, using the under the plug
sender, supplied with my VDO gauge, reads around 275, under most
circumstances. My concern is the large differential in the two readings
and whether I should be concerned about it. I have not tried using the
Rotax supplied probe. Maybe I'll try that and see if it makes a
difference...
Jeff - N55XS
133 hours
Richard Holder wrote:
>
>>Has anyone used the Rotax supplied probe (the one in
>>the head) successfully with a VDO gauge? If so, will
>>it hook directly to the VDO gauge, or does it require
>>some sort of adapter? What, if any, difference should
>>I expect in reported temps? Any help is greatly
>>appreciated...
>
>
> Here on the eastern side of the pond the Rotax engine
> comes with four VDO instruments (voltmeter, oil pressure,
> oil temp and ch temp - the last two are the same).
>
> The VDO instruments are designed for the Rotax senders (or
> rather I suppose the senders are designed for the VDO
> instruments).
>
> ACS sell a much cheaper oil pressure sender. The
> temperature senders in the Rotax there are three - the one
> used for oil is the same as the one used for CHT - are
> metric and there isn't much of a choice when replacing them.
>
> If you want water temp (rather than cylinder head temp)
> then use a imperial thread sender designed for VDO and
> either tap it into the top water reservoir, or into a
> T-piece on the pipe out of the reservoir.
>
> Richard Holder
> G-OWWW High Cross
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