Today's Message Index:
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1. 09:32 AM - Re: Powder Coatings - after the fact (Kirby Dennis Contr MDA/AL)
2. 04:41 PM - Re: Kolb-List Digest: 26 Msgs - 12/27/07 (David Herron)
3. 06:56 PM - Re: Re: bent gear ()
Message 1
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| Subject: | Re: Powder Coatings - after the fact |
"The BaronVonEvil" wrote: <<... Because of the temperatures involved I
would not coat aluminum parts especially tempered or hardened bits. If
you decide to powder coat the cage you will need to remove the boom
tube. Carlos G >>
This topic came up on the Kolb List several years ago when I asked the
same question: "Can I powder coat the aluminum boom tube?"
It was determined (and I verified, to be sure) that the 6061 Aluminum
will not suffer any degradation of its strength properties by being
heated to 400 degrees F. I consulted with a strength & structures
engineer. We looked at several temp vs. strength graphs for 6061
aluminum. Bottom line is: you're OK to powedercoat the boom tube.
I did mine in 2000, along with the cage and all steel parts in the Kit.
Works just fine.
Dennis Kirby
Mark-III, 912ul, Powerfin-72, N93DK
Cedar Crest, NM
Message 2
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| Subject: | Re: Kolb-List Digest: 26 Msgs - 12/27/07 |
Hey Ray,
Don't give my secret away :-) .
Interesting idea about putting two floats together to gain extra pounds
for your regs. I will talk that up with a couple of float pilots.
Keeping spray off a lower prop is important.
I have regular floats for my Lazair, but the designer made a mono float
to save weight and facilitate amphib wheels; weight is not an issue for
our regulations until we get to the gross for our ultralight class
(Canuckland) - but they tell me weight and power mean everything for
safety and performance.
Most float pilots prefer high wings around docks etc. Goofy, beauty is
in the eye of the beholder, an ugly duckling that can get off the water
and fly safely is a beautiful thing.
Cheers,
drh
CYEL
Message 3
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For all of you gear leg benders (myself included), remember that 7075-T6 aluminum
will not take too many bends. They will take one or two if the bends are not
severe. Past that and who knows? I care an extra one which is predrilled
for the left gear, just in case I hit a chuck hole. As for full stall landings,
the VGs solved that problem. Now, I do not have to learn to do it right.
Vic (Sacramento) N4201G
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