The easiest way to get a good seal is to use polysulfide sealant
(Proseal) to seal the gaskets...
It's more flexible than epoxy, and is pretty much intended for fuel &
water sealing purposes...
The downside is that it is VERY sticky/messy stuff ('infamous for
getting all over everything BUT what you are trying to seal with it') &
stinks like no-other....
On 7/21/2013 6:05 PM, rbaalman at cox.net wrote:
> As an alternative, you can bore the five mounting holes and the probe hole
> and use a sealed nut ring on the inside of the tank. I made the ring out of
> scrap aluminum and riveted domed nut-plates to the ring and then epoxied the
> ring to the tank. The hole pattern may be similar to what cessna uses on
> their tanks which is not symmetrical. The probe will need to be clocked
> after bending/ before drilling mount holes. The bendable section will be the
> first few inches of the probe.
> Roger
>
> ---- Jeff Scott <jscott.planes at gmx.com> wrote:
>> It looks like the same thing as the Westach capacitance probe which is what
>> I've got in my KR. It has 5 holes for 3/16 screws and should come with a
>> square mounting plate and gasket. You bond the aluminum plate to the side
>> of the fuel tank where you want to mount the probe. The probe goes through
>> a hole in the center of the plate and the base mounts to the flange using 5
>> 3/16 screws or bolts. I had problems with them weeping under the mounting
>> gaskets off and on until I finally sealed the gaskets with some west epoxy.
>> If you have an aluminum tank, you could weld or rivet the aluminum mounting
>> flange to the tank. The picture at
>> <http://www.aircraftspruce.com/catalog/inpages/westachSender.php> shows the
>> mounting flange (even though that particular unit is the older 12V version
>> of the probe).
> -Jeff Scott
> Los Alamos, NM
> <http://jeffsplanes.com>
>
>
>> ----- Original Message -----
>> From: Mark Langford
>> Sent: 07/19/13 06:12 PM
>> To: KRnet
>> Subject: KR> capacitance fuel level sender?
>>
>> KRNetHeads,
>>
>> I've finally finished up front-hinging the canopy (I'll work up a web page
>> over the weekend), and next on the list is adding a fuel level sender to
>> N891JF. I have a VDO 226-007 resistive sender, but am considering a
>> capacitance sensor as well. MGL sells one near the bottom of
>> http://www.mglavionics.com/html/infinity.html described as "Capacitance Fuel
>> Level Sender, Bendable, Cutable" . Is anybody familiar with this particular
>> unit, and might know the thread size or other mounting details? I have a
>> call in to MGL but have not heard back yet. I'm using an RDAC XF interface,
>> and I think either of these two would work, but am checking my options.
>>
>> Thanks a lot,
>>
>> Mark Langford
>> ML at N56ML.com
>> website at http://www.N56ML.com
>> --------------------------------------------------------
>>
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>
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