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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Aluminum Hardware?
05-12-2013 10:26 PM  6 years ago
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Mr.Bowflex

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Toronto Canada

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Aluminum Hardware?
Anybody every seen aluminum hardware used instead of steel? Many helis use steel, 3mm screws and socket head bolts for their construction and replacing them with aluminum might provide some decent weight saving.
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05-12-2013 10:38 PM  6 years ago
sonnyhad

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Holland,Mi

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They don't have the strength of steel and the vibrations would cause them to shear!Bald Pilots usually wear hats!
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05-12-2013 10:46 PM  6 years ago
Ace Dude

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USA

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Others have tried it and it's failed on them, even in low stress applications.  
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05-12-2013 11:14 PM  6 years ago
RCHSF

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NC

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They be better off trying to use plastic bolts like for wings. Prob be stronger.
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05-13-2013 12:32 AM  6 years ago
MartyH

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USA

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You'd need to be thinking titanium rather than aluminum and it's not worth the cost versus potential weight savings.
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05-13-2013 03:15 AM  6 years ago
icanfly

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ontario

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Hey Bowflex, what's happening?

You know, before I met you down at the waterfront park I was thinking the same thing. Bolts for the frames in non crucial areas perhaps.

I'm a huge fan of titanium though, but they are costly. It's the best way to go. I outfitted a mountain bike with 95 percent ti, must have saved a few pounds. It got stolen before I could put some fresh wheels on.

Aluminum bolts only stand so much torque before twisting apart. A ti bolt with an aluminum nut would work well, especially if the nut has a heli-coil in it. This stuff is kind of what you see in the high end custom crotch rocket rice burner motorbike market. I have some beautiful anodized m3x1.5mm pan head fairing bolts right now, and a whole box of aluminum motorbike bolts (m5) if your interested (pm me).

Aluminum bolts to plastic would seem fine to me.

Skids, trays, some cf frame bolts, servos, tank, and probably a few other places could work without trouble. trick is to keep steel where it's needed most and where a bolt is going to be tightened a lot.

Like these? http://faqload.com/faqs/bicycle-com...nd-carbon-fiber
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05-13-2013 03:52 AM  6 years ago
Mr.Bowflex

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Toronto Canada

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Titanium would be nice... Huge $$$ though.

Aluminum bolts or screws going through plastic to plastic might be ok, for example on plastic sideframed helis and generally used in non-structural areas.

Some of the older Thundertiger Raptors with plastic side frames I believe had plastic hex spacers inside for the screws that hold the two frame halves together. Perhaps aluminum hardware could be used there...

Any aluminum bolts going into, say a metal bearing block or engine mount would be a big no no for obvious reasons.
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