Billet alloy alternator bracket for the Spitfire :)

"BiTurbo228 - Dr Frankenstein of Spitfires" (biturbo228) 02/12/2015 at 15:40 • Filed to: Spit6

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0.242kg compared to 0.538kg for the cast iron one. Not really worth the money, but pretty :)

CalzoneGolem > BiTurbo228 - Dr Frankenstein of Spitfires 02/12/2015 at 15:44

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And who doesn't need a prettier alternator bracket? I know I do.

davedave1111 > BiTurbo228 - Dr Frankenstein of Spitfires 02/12/2015 at 15:51

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Saving that much weight seems worthwhile. Unless they really stung you for the bracket. I wonder how much it would weigh if carved from a lump of MDF.

BiTurbo228 - Dr Frankenstein of Spitfires > davedave1111 02/12/2015 at 19:32

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Probably sod all in MDF ;)

I've got a little chart of weight lost per pound spent, and this one was quite low down on the list...

davedave1111 > BiTurbo228 - Dr Frankenstein of Spitfires 02/12/2015 at 19:38

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I wonder if the MDF, or ABS or something, would work. Maybe not strong enough? Is all the load in compression?

"I've got a little chart of weight lost per pound spent"

And a girlfriend as well? Shit, I think you just created a black hole.

BiTurbo228 - Dr Frankenstein of Spitfires > davedave1111 02/12/2015 at 19:42

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I know tell me about it! She even knows about it, and has a pretty face. Not certain how I managed that ;)

I'm not certain which way the load pulls actually. I think it'd be compression, perhaps a little sideways force as that's one of two mounting points for the alternator.

Someone else suggested 3D printing in reinforced plastic which might be light and strong enough...

davedave1111 > BiTurbo228 - Dr Frankenstein of Spitfires 02/12/2015 at 19:50

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I suspect that if you could analyse the loads properly, and work out just what you needed structurally, the lightest would be custom-fabbed steel - and there'd be a hell of a lot less there.

The only reason I keep wondering about wood is that I'm comfortable with carpentry but have never done any metalwork. Plus, I keep expecting engineered timber parts to turn up in cars.

http://en.wikipedia.org/wiki/Engineere…

I'm sure I've mentioned my idea for a plywood chassised car, where the suspension all comes from flex in the plywood.