Poly Fiber Dacron cloth compatibility

[Sidney Wood]

#17862

Is Poly Fiber Dacron cover cloth compatible with Stewart Systems liquids.
This Poly Fiber Dacron was purchased with the original Quad City Challenger II clip-wing kit in 2007. I am the second owner of this kit and am now attempting the first cover with Dacron fabric using the Stewart Systems liquids.

[Andy Humphrey]

#17864

Yes, you can use the Polyfiber envelopes that Challenger supplies.  They will work just fine with our products.

[Sidney Wood]

#17866

Andy,
Thanks for the prompt reply. I will press on with my cover adventure.

Sid

[Sidney Wood]

#17885

The aluminum tube horizontal stabilizer panels on the Quad City Challenger II were covered using the 1.8 oz. Dacron cloth and Poly-Fiber Poly-Tak adhesive in 2008. The Dacron cloth was heat shrunk and appears in excellent condition. Poly-Brush was not used on the Dacron. The panels had been stored in black trash bags since 2008. Are Stewart Systems Eko bond and Eko fill compatible to apply over the original Poly-Tak adhesive, or should I strip the previously applied 2008 Dacron to start over?

[Andy Humphrey]

#17899

On an experimental, yes, that will work just fine.  If it’s been sitting that long you might want to wipe over the Poly-tak with some MEK to reactivate it.  I think you will get better adhesion.  Clean the fabric and brush Ekobond into the bare fabric to seal it up as described in section 10 of our manual, then apply EkoFill per the manual, etc…  On a certified aircraft it would not comply with the STC, but on experimental it works just fine.

[Sidney Wood]

#17902

Andy,
The compatibility info answers are much appreciated. That will likely save about $400 cost in fabric alone for this Quad City Challenger II cover project. Preparing the order list now for Stewart Systems liquids and supplies.

[Andy Humphrey]

#17904

Great!  I wish we could do that on a certified airplane.  It works fine, but it just doesn’t comply with either STC’s data.  On a repair, that’s a different story.  We are certified to repair any other certified system.  But their system has to be complete and signed off with their STC before it can be repaired with ours.

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