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'Collar shift' ...huh?

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Dan

10-08-2001 06:14:08




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What is meant when a seller calls a Ford tractor having a collar shift?
And, did all Ford 600 series have the 5 sp?
thanks




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Ken McWilliams

10-09-2001 20:21:46




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 Re: 'Collar shift' ...huh? in reply to Dan, 10-08-2001 06:14:08  
Collar shift transmissions are also known as constant mesh transmissions. All the driven gears are engaged all the time by the driving gears. The collar slips over a small straight cut side gear on the helical gear and the collar is splined so that the gear engaged is mechanically connected to the shaft on which they're rotating.

The primary purpose for collar shifting is to use helical cut gears that are quieter. If you you would try to have sliding gears using helical cut gears the angle on the teeth would induce side thrust and cause the gears to separate.

Straight cut gears are noiser, but are used for the sliding gear arrangement. The straight cut gears don't induce side thrust as do helical cut gears and thus, you can use only a detent in the shifting mechanism to hold them together.

The sliding collar does not induce a side thrust when engaged and thus, a detent will hold it engaged. The side thrust of the helical cut gears are already compensated by using thrust washers and thrust bearings.

I thought everyone knew this.

Ken McWilliams
Dayton, OH

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CHARLES BELK

10-05-2003 18:48:19




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 Re: Re: 'Collar shift' ...huh? in reply to Ken McWilliams, 10-09-2001 20:21:46  
My father has a John Deere 4600 with collar shift transmission, anybody out there know what could have gone wrong with tranny to make it stick in gear, to the point you must cut tractor off shift to nuetral and then back to a new gear. appears as thou it gets worse the longer you operate the tractor.



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We Did All Know This

10-10-2001 13:37:01




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 Re: Re: 'Collar shift' ...huh? in reply to Ken McWilliams, 10-09-2001 20:21:46  
But, we were "testing" you! :) Robert in W. Mi.



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Hey Robert

10-10-2001 19:28:29




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 Re: Re: Re: 'Collar shift' ...huh? in reply to We Did All Know This, 10-10-2001 13:37:01  
Robert,

Good come back. I like it!

KRM



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RickB.@

10-08-2001 16:32:57




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 Re: 'Collar shift' ...huh? in reply to Dan, 10-08-2001 06:14:08  
Lee has the correct answer.



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Lee

10-08-2001 15:17:12




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 Re: 'Collar shift' ...huh? in reply to Dan, 10-08-2001 06:14:08  
A collar shift trans uses a collar that the shifting fork sets in it is shifted forward and backward to engage the gear, the gears do not slide. The older trans were refered to as sliding gear trans, the gears moved back and forth to engage another gear.



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F14...Hmmmm.

10-08-2001 18:11:09




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 Re: Re: 'Collar shift' ...huh? in reply to Lee, 10-08-2001 15:17:12  
Learn something every day, if you're not carefull...

Thanks, Lee.



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F14

10-08-2001 09:40:45




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 Re: 'Collar shift' ...huh? in reply to Dan, 10-08-2001 06:14:08  
As far as I know, "collar shift" is just another way to say "stick shift" as opposed to hydrostatic.



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