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Aprilia gear material
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Topic: Aprilia gear material (Read 4067 times)
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davidwheeler
Permanent resident
Posts: 1479
Aprilia gear material
«
on:
03 April, 2011, 09:29:40 AM »
My fabled new bottom gear wore out in a few hundred miles die to being made of the wrong kind of steel. Does anyone now where I might find the correct specification?
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David Wheeler. Lambdas, Aprilia, Fulvia Sport.(formerly Appia and Thema as well).
phil-m
Lapsed
Senior Member
Posts: 173
Re: Aprilia gear material
«
Reply #1 on:
03 April, 2011, 08:14:13 PM »
You could do worse than use G.K.H.W by Aubert and Duval. It will not be cheap but it is one of the best steels you can get.
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davidwheeler
Permanent resident
Posts: 1479
Re: Aprilia gear material
«
Reply #2 on:
06 April, 2011, 11:15:04 AM »
A search of the Albert and Duval web site fails to find G.K.H.W. What manner of steel is it? The nearest I can find is GKH, a steel for nitriding with C Cr Mo. It seems to have the highest ultimate tensile strength and yield strength.
David
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David Wheeler. Lambdas, Aprilia, Fulvia Sport.(formerly Appia and Thema as well).
DavidLaver
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Posts: 4384
Re: Aprilia gear material
«
Reply #3 on:
06 April, 2011, 11:26:40 AM »
Picking the thread up at this point why did you not get the gear made by a gear maker? They'd have stocks of the correct steels and be heat treating (and whatever) else appropriately day in day out.
David
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David Laver, Lewisham.
the.cern
Permanent resident
Posts: 1494
Re: Aprilia gear material
«
Reply #4 on:
06 April, 2011, 04:32:08 PM »
I'm a Civil Engineer, not a Mechanical Engineer, but I do think hardness rather than tensile strength may well be the criterion to check for here. David's suggestion to go to a gear specialist would seem to be a good start. You might get only advice if they don't do 'one offs' but at least you'll have started the process. As a matter of interest, where did the specification for the material for the failed set come from.
Good luck with it and if you come across a good gear cutting specialist, please let us all know, the people I used sold up in the eighties !!!!!
Andy
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Dilambdaman
Permanent resident
Posts: 1380
Re: Aprilia gear material
«
Reply #5 on:
06 April, 2011, 05:30:04 PM »
Neve Engineering - specialist gear cutting.
Not used them but heard good things about them.
http://www.neveengineering.co.uk/site/index.php
Robin.
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Robin Lacey 3222
1932 Dilambda
1992 Y10 GTie
2012 Delta Mk3
2013 Ypsilon 846
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