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John Deere Tractors Discussion Forum
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Re: Early JD Conditioner

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Texasmark1

05-07-2013 07:55:34
184.21.28.126



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No but you can figure it out easy enough. I'm basing this answer on an IH conditioner which has the pto into a gearbox the output of which goes out at a right angle on a shaft to a drive gear. That gear drives a chain that rolls a larger upper roller and a smaller crimper roller below. I assume you are looking for a gear for the lower roller. Otherwise disregard this response.

Take a ruler and measure the diameter of both the upper and lower rollers. Measure the number of teeth on the upper roller.

Calculation example:

Upper roller diameter 10"
Lower roller diameter 8"

Upper roller gear teeth 20
Ratio of lower to upper is 0.8:1 (lower roller has to roll 1 1/4 revs to equal one rev of the top roller).

So 20 x .8 = 16 teeth for the lower roller gear.

HTH,
Mark

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Texasmark1

05-07-2013 08:04:47
184.21.28.126



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 Re: Early JD Conditioner in reply to Texasmark1, 05-07-2013 07:55:34  
Brain PFART. The ratio of the diameter to the circumference is pixd. Since pi is 22/7 or 3.14, the parts of the rollers that touch will not be per the diameter ratio but that ratio with respect to pi.

I have to go to town right this minute and will return later today. If this thread is still up, I'll do the correct calculation on the gear ratio.

Sorry for the error. The longer you're retired, the more that slips your mind.

Mark

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