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Thread: Aluminium Gears
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27th Nov 2019, 07:46 PM #1Senior Member
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Aluminium Gears
https://www.youtube.com/watch?v=2NAdyOPbOEg
So that's where those non genuine diff gears came from.
Actually it says he did it to demonstrate his casting skills.
Pretty impressive for a very basic setup.
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27th Nov 2019, 10:33 PM #2Most Valued Member
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Love the actual pour where he's holding the flask down with his foot and pouring the molten aluminium towards it.
What could possibly go wrong with that
Steve
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28th Nov 2019, 02:40 AM #3Golden Member
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That's the Mahindra factory.
I've seen a heap of videos of this guy doing his thing over the past few weeks. Lots of interesting things about what he does- apart from the fact that he works with his knees in his armpits all day, then when he leaps up to do his little dance to ram the flask somehow he doesn't lose consciousness. And he still seems to have all his toes, which is just as well as he doesn't seem to have anything else to use to weight his flasks.
His little pile of sand appears to use a sawdust binder or similar, when he shakes out the flask he re-uses the resulting charcoal for his furnace. He has some interesting techniques for his sprues, there's one where he's making a motorcycle gearbox casing and he makes the ingate long and thin, then just snaps off the riser from the casting. Would save a bit of fettling if it worked.
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4th Jan 2020, 11:34 AM #4Senior Member
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Won't the casting be smaller than the original? Long long ago I watched my now deceased older brother cast an aluminium rocker cover for his FJ Holden using one he had borrowed as the pattern. Several failures, but one was perfect. But when he went to fit onto the car, it was too small - particularly not long enough to cover the rockers. He was not happy. I remember that bit very well!!
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4th Jan 2020, 02:28 PM #5Senior Member
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- Perth, Western Australia
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Yes it will shrink.
3/16" per foot I think it is for aluminium. (its been way to long so don`t quote me on that)
Tony
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