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Old October 21st 09, 05:56 AM posted to rec.aviation.soaring
Eric Greenwell
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Posts: 1,096
Default Alternative to welding aluminum frame of Komet?

.. wrote:

Note that UH says Cherry-Max - these are not cheapo pop-rivets !

It's not an airplane - just use standard steel rivets, and put in few
more than you would need with the Cherry-max. They are in a place that's
easy to inspect. If you need strong rivets, the steel 5/32" are really
strong - and cheap (at least in the USA).

Don't mix steel and aluminum. They are too far apart on the electro-
chemical scale and will set up an electrolytic cell that will corrode
the repair. Use aluminum or Monel-metal rivets and aluminium
brackets, gussets etc.


The steel rivets I use are plated - standard hardware store stuff - so
it's not steel on aluminum, but whatever the plating is (zinc, I
assume). I don't have any problems with corrosion, but it's not very
humid here, either.

--
Eric Greenwell - Washington State, USA
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