I wondered about that too. Sounds kind'a obvious when you first hear it,
but maybe the surface area of the two schemes could be about the same.
One has small short splines and lots of them, the other has a few large
tall ones.
Most interesting point in the whole thread to me was the point about the
machining variations leading to only a small number of splines carrying
the load with the rest along for the ride. If that's true, it might lead
one to design a spline where the Torque could be carried by only one or
a few of the splines, rather than having to depending on a bunch of them.
Don Malling
Phil Ethier wrote:
> ----- Original Message -----
> From: "Dave & Marlene" <rusd@velocitus.net>
> To: "Bob Nogueira" <nogera@worldnet.att.net>
> Cc: "shop-talk" <shop-talk@autox.team.net>
> Sent: Friday, October 10, 2003 11:13 PM
> Subject: Re: Engineering Question Regarding Splined Shafts
>
>
>
>>Bob,
>>
>>A larger number of fine splines has more surface area
>
>
> Really? Explain how.
>
>
> thus more strength
>
>>than a smaller number of coarser splines. Also coarse splines are cut
>>deeper which reduces the shaft cross section & strength.
>
>
> True.
>
> Phil Ethier West Side Saint Paul Minnesota USA
> 1970 Lotus Europa 65/2597, 1992 Saturn SL2, 1993 Suburban, 1962 TR4 CT2846L
> pethier@isd.net http://www.mnautox.com/ http://www.lotusowners.com
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