REFLECTOR: Franklin Oil Pressure

John Dibble aminetech at bluefrog.com
Sun Jul 5 14:52:13 CDT 2009


Thanks Mike.  That helps a lot.  Looks like I'm in the same ballpark.
One time during cruise last Feb the pressure went down to 30 and then
back up which prompted me to add the washers.  Now it's looking like it
might be the pressure sensor.

John

Michael Watson wrote:

> John,
>
> In flight Oil temp 195 F /91 C  24 inHG 2550 RPM  I'm showing 46 psi.
> I have the stiffer spring and 5/8 insulated oil lines. I am taking oil
> pressure
> from position 7.1 and oil temperature from position 7.2.
>
> On ground OAT 89 F / 32 C 900 RPM oil temp 110 F /43 C just before
> takeoff, oil pressure reads 38 psi increases to 53psi mid takeoff
> roll. After
> that point , eyes out the window no more monitoring, sorry : )
>
> Hopes this helps.
>
>
> On Sun, Jul 5, 2009 at 12:55 PM, John Dibble <aminetech at bluefrog.com>
> wrote:
>
>      I removed the 3 washers behind the bypass spring.  My oil
>      temp was 9 C
>      lower.  The OAT was 7 F lower than the other day that I'm
>      comparing the
>      pressure to.  At an oil temp of 88 C, my oil pressure was 50
>      psig.  I'd
>      like to have some pressure/temp data from other Franklins to
>      compare to.
>
>      John
>
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> --
> Mike W.
> 1997 Velocity Elite RG
> Franklin /IVO Electric CS
> Dual GRT EFIS HX Synthetic Vision
>
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