Fuel sender access hole, to do or not to do?

busman78 · Posted: Tue May 24, 2011 8:56 am Post subject:

So Aeromech, being the duct tape illustrates a hack job by your standards then I can assume all the rest that have been pictured meet your high standards for non hack jobs?

aeromech · Posted: Tue May 24, 2011 9:14 am Post subject:

Kirk · Posted: Tue May 24, 2011 9:19 am Post subject:

aeromech · Posted: Tue May 24, 2011 9:37 am Post subject:

What should you use under that metal lip to seal the fumes off?

Well that depends on if you plan to reopen it some time down the road. If not, we used a product in aviation fuel tanks called PRC. It is a two part rtv like material you can seal this with and is made for this type of application. Getting it apart later on would destroy the new panel unless used very sparingly.

PR-1776 Low Weight Fuel Tank Sealant
Description
PR-1776M Class B is a low density, high temperature aircraft integral fuel tank sealant. It has a service temperature range from -65°F (-54°C) to 250°F (121°C), with intermittent excursions up to 360°F (182°C). This material is designed for fillet sealing of fuel tanks and other aircraft fuselage sealing applications. It offers as much as a twenty percent weight savings, per unit volume, over traditional sealants used for these purposes. The cured sealant maintains excellent elastomeric properties after prolonged exposure to aircraft fuels both jet fuel and aviation gas, and will resist limited contact to diphosphate ester based hydraulic fluids.

If you want the panel to be easily removable but still seal I guess you'd have to find some kind of rubber edge material. Think of something like fuel line sliced down the center and slid over the lip. Maybe held in place with weatherstrip adheasive.
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busman78 · Posted: Tue May 24, 2011 10:16 am Post subject:

3M 08500 Body Sealant will do the sealing, does not harden completely, removal is easy, paintable. Plus if your vapor lines are good, filler neck is good, sender seal good there should be no fumes at all. If you are smelling fuel then there are other things needing a little attention.

rubbachicken · Posted: Tue May 24, 2011 12:06 pm Post subject:

if you are going to do it do it right
duck tape is for ducks, the orange cover is the way to go
i voted cut it, but do it right, OK the motor is out now, if it all goes back together, then fails later, that would suck
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Lettuce · Posted: Tue May 24, 2011 1:09 pm Post subject:

you guys are worried about fumes entering the bus... there should be no fumes coming from the tank

aeromech · Posted: Tue May 24, 2011 1:33 pm Post subject:

kruton · Posted: Tue May 24, 2011 2:02 pm Post subject:

We have reached 50/50 in the poll and in the beginning it was - dont do it, until pictures were posted of good cut and repair jobs now it seems that the best decision would go ahead and make the cut but to cover it very professionally while the motor is already out. Thanks for all the help samba members!

Aeromech talked me into redo-ing my tank too.. So my project list just got longer- thanks Cool

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Wildthings · Samba Member Joined: March 13, 2005 Posts: 50352

FlowerPowered · Posted: Tue May 24, 2011 8:48 pm Post subject:

Lettuce · Posted: Wed May 25, 2011 11:06 pm Post subject:

FlowerPowered · Posted: Thu May 26, 2011 7:41 am Post subject:

rubbachicken · Posted: Fri May 27, 2011 11:18 am Post subject:

Wildthings · Samba Member Joined: March 13, 2005 Posts: 50352

Don't see how anyone could do that without blowing the tank, the bus, and themselves to high heaven.

FlowerPowered · Posted: Fri May 27, 2011 12:08 pm Post subject:

EZ Gruv · Posted: Fri May 27, 2011 12:10 pm Post subject:

Nice clean cut though. Razz

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Fuel sender access hole, to do or not to do?
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