Ferg,
Although I have a 912S, not the 914, I guess there is no difference between
the two on this particular issue.
I have a hose T and VDO temp. transducer supplied by the UK Rotax dealer
Skydrive. Contrary to the Lockwood T that Ira mentions, this is fitted in
the hose between cylinder No. 3 (aft right side) which normally is the
hottest one (at least on 912S) and the expansion tank on top of the engine.
The reason for this is that while a common system problem (e.g. with the
cooling in the radiator or the pump or a leakage) will be detected also by
measuring the temperature in the expansion tank or in the return hose to the
radiator, some other reason for overheating of cylinders will not be quickly
detected by measuring the temperature in the common, mixed coolant coming
---From all the cylinders.
To be on the safe side, one should therefore measure the coolant temperature
between all the cylinders and the expansion tank. A practical approach,
applied by Skydrive, is to measure the coolant temp. only after cyl. 3.
This corresponds with the philosophy of Rotax for their factory supplied
engine monitoring, which measures the cylinder head temperature only of cyl.
no.3, the normally hottest one.
I have connected the temp. sensor to an available input channel in my GRT
engine monitoring system (excellent piece of equipment).
Best regards,
Svein
LN-SKJ
----- Original Message -----
From: "rampil" <ira.rampil@gmail.com>
Sent: Thursday, February 28, 2008 2:39 PM
Subject: Europa-List: Re: Coolant temp on a 914
>
> Ferg,
>
> Lockwood also has designed a hose tee which they sell with a VDO
> temp transducer for about $45. It belongs spliced inbetween the
> expansion tank and the radiation, close as reasonably possible to
> the expansion tank
>
> --------
> Ira N224XS
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=166717#166717
>
>
>
|