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Title: Aprilia gear material Post by: davidwheeler 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?
Title: Re: Aprilia gear material Post by: phil-m 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.
Title: Re: Aprilia gear material Post by: davidwheeler 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 Title: Re: Aprilia gear material Post by: DavidLaver 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 Title: Re: Aprilia gear material Post by: the.cern 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 Title: Re: Aprilia gear material Post by: Dilambdaman 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. |