[AT] WAS: Snow Blower now Belt Dressing

[charlie hill]

Ralph that belt concept was invented by Allis Chalmers and was called 
"texrope" back then.
It was designed so they could drive textile machines with individual motors 
for each machine.
The "texrope" would transmit enough HP to pull the machine but had some 
shock limiting effect on
start up that kept the machines from breaking the ends (threads) running 
through the machine.

Charlie



--------------------------------------------------
From: "Ralph Goff" <alfg at sasktel.net>
Sent: Wednesday, August 18, 2010 3:09 PM
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Subject: Re: [AT] WAS: Snow Blower now Belt Dressing

>
> ----- Original Message ----- 
> From: "Larry Goss" <rlgoss at insightbb.com>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Wednesday, August 18, 2010 11:51 AM
> Subject: Re: [AT] WAS: Snow Blower now Belt Dressing
>
>
> Alignment on a flat belt is almost a "no-brainer". When a belt wants to 
> walk
> it is going toward the LONGEST distance between centers it can possibly
> find. It involves more than just getting the input and output axles lined
> up, but one of the pulleys needs to have a slight crown to it so the 
> longest
> distance between rotating centers is always in the center of the belt. If
> you don't have that condition because of limitations on what you can do 
> with
> your belting situation, it will always cause you trouble. If you have ever
> looked closely at a line shaft installation, you will find at least one
> pulley in every pair is crowned. Cast iron pulleys are made that way on
> purpose. It isn't just that having the parting line in the middle of the
> pulley was easy -- it is necessary. We had trouble keeping the flat belt 
> on
> the hammer mill when we first bought it and tried to power it with our 
> John
> Deere. So Dad wound several layers of friction tape around the center of 
> the
> pulley on the mill so it was slightly crowned. It solved the problem, and 
> I
> found out at an early age that friction tape isn't just for the handles of
> baseball bats.
>
> Yes, the hammer mill pulley has a slight crown to the centre and I believe
> the wood saw pulleys are buillt the same way.
> I should mention that the flat belt in the wood sawing video was not a 
> true
> flat belt like the old ones. This was actually a modern multi-vee belt 
> used
> on farm equipment. The belt was turned to run upside down so that it in
> effect does have a flat surface to run on the flat pulleys of the engine 
> and
> saw. Seems to work well all these years.
>
> Ralph in Sask.
>
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