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RVGator
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Date: 5-2-2012
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Number of Hours: 1.75
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Manual Reference:
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Brief Description: Drilled weep holes
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Other event kept me busy today so not much time in the shop. I am nearing the time to rivet on the hinges to the cowl, since these parts see a lot of vibration I plan to do an optional step which is to epoxy or use some other adhesive to fasten the hinge to the cowling. It seems many use stuff other than epoxy, I heard of others using ProSeal, Sika glue, JB weld and numerous other adhesives. By far because, it is recommended by Van’s, is to use a mixture of epoxy and cotton flox so that is the route I plan unless I read something else that sounds better. The JB weld is interesting in that it will stick to the aluminum hinge better than epoxy, I would need to see if it can be thinned down some.
The hinge area also flexes some so epoxy is less good in this area, this would make Sika or ProSeal better in that they flex some after curing. The glass airplanes use epoxy with no rivets to hold cowl together so it can’t be all bad. Decisions, Decisions!
One tip I will follow is to put on the adhesive then cleco on the hinge and install the cowl, then let the adhesive set before riveting. The soft aluminum hinge stock can move a bit when riveting and this can cause the hinge eyes to move out of alignment a bit. Letting things set up before riveting will keep things in alignment, and an added bonus to this method, I will not get epoxy resin on my riveting equipment.
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I started to use a 1/4" hole but then opted for a 3/16
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