Re: [CAD_CAM_EDM_DRO] Long Acme threaded rod

On Fri, 21 Jun 2013 22:38:51 -0400, you wrote:

>On 06/17/2013 05:20 PM, Steve Blackmore wrote:
>> They don't stretch.
>>
>> See
>>
>> http://www.gates.com/facts/documents/Gf000284.pdf
>> or
>> http://www.sdp-si.com/D265/PDF/D265T003.pdf
>>
>> Steve Blackmore
>
>Well, they DO stretch, but so do 2" ball screws when enough force is
>applied, but I doubt that you could measure the stretch on the belts
>unless you were really careful! Stretch of a few tenths of a thousandth
>of an inch per foot is not all that bad, but that is why there are
>automatic tensioners on automotive timing belts.

The tensioner is there to allow you to fit the belt, then TENSION it
correctly not to take up stretch....

Steve Blackmore
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