Sequence of skin replacement ie rivet bucking/installation

How to keep the Cessna 170 flying and airworthy.

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Bruce Fenstermacher
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Sequence of skin replacement ie rivet bucking/installation

Post by Bruce Fenstermacher »

At the shop we are replacing flap tracks on a 172 which would be the same as a 170B. Drilling all the bucked rivets and removing the flap well skin is only time consuming. Replacing the skin and bucking all the rivets after the new flat tracks are installed is another matter.

What is the sequence to follow to allow a hand to get into all the rivets to allow bucking? Initially we thought we bucked the bottom row with the skin dangling to allow access to the back for the bucking bar and work our way up to the top. Problem is, once the bottom of the skin is attached, one can't slip the skin over the installed flap tracks.

Any tips?
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Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
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GAHorn
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Re: Sequence of skin replacement ie rivet bucking/installati

Post by GAHorn »

I believe a call direct to Del Lehmann in Mena is the best advice I can offer.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
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Bruce Fenstermacher
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Re: Sequence of skin replacement ie rivet bucking/installati

Post by Bruce Fenstermacher »

GAHorn wrote:I believe a call direct to Del Lehmann in Mena is the best advice I can offer.
Yes, I sen't him an email and he responded. This is quite the puzzle. How did Cessna do it.

I'm not in charge of the project. I'm afraid it will ultimately involve lots of Cherry Max rivets.
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Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
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