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175 gear reduction ?
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Macon Rounds View Drop Down
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Joined: 18 Feb 2010
Location: Pittsburgh Pa
Points: 2328 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Macon Rounds Quote  Post ReplyReply Direct Link To This Post Topic: 175 gear reduction ?
    Posted: 12 hours 16 minutes ago at 9:59pm
Why did Allis slow the 175 tractors down ?
And
The later 175 tractors even had a slightly bigger diesel engine. Than the 170 diesel.

My understanding is it was done thru the final drives.
But
I am still learning...

What the story here ?

Edited by Macon Rounds - 12 hours 15 minutes ago at 10:00pm
The Allis "D" Series Tractors, Gravely Walk behind Tractors, Cowboy Action Shooting !!!!!!! And Checkmate
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 23589 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 11 hours 60 minutes ago at 10:15pm
175-180-185's all have the heavier duty/wider bull gear final drives that are 5.85 to 1 ratio. This began in 1967 with the new model One-Eighty. The HP was 64. The weight (with fluid) was around 8,000 lbs. The rear rubber was 18.4 x 28's that are larger diameter than a 16.9 x 28. The gear ratio reduction offset the larger diameter tire so that high second gear was still "plow gear". So, in the end engineers felt that anything over that 55 HP number was going to get the stronger final drives. Remember, after the 190XT and D-21 rear end failures, they weren't taking any chances.
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Macon Rounds View Drop Down
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Joined: 18 Feb 2010
Location: Pittsburgh Pa
Points: 2328 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Macon Rounds Quote  Post ReplyReply Direct Link To This Post Posted: 11 hours 43 minutes ago at 10:32pm
In my arena 170/175 tractors are not a tillage tractor.
And in the rhelm of bigger tillage tractors why would you slow the 175 down.

I currently run 30" tires on my D17's and 170 tractors for hay making operations. So to speed them up. I feel like i'am sleeping on my 175...
Great technical data on the 175. Thanks Doc...






Edited by Macon Rounds - 11 hours 33 minutes ago at 10:42pm
The Allis "D" Series Tractors, Gravely Walk behind Tractors, Cowboy Action Shooting !!!!!!! And Checkmate
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Nathan (SD) View Drop Down
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Joined: 11 Sep 2009
Location: Day County SD
Points: 1326 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Nathan (SD) Quote  Post ReplyReply Direct Link To This Post Posted: 50 minutes ago at 9:25am
The diesels were derated. That was a 75 horse, 2500 rpm engine in any other application.
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