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8N std and low range

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Rich W.

03-22-2004 20:55:01




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I am looking to add a low range capability to a '52 8N. I have just purchased an 8N with a std and high range (Sherman I think); but, it's just too high geared.
I have another 8N that is an unmodified standard 4 speed. It's also too high geared.
Either tractor would be fine for modification. Can anyone give me information on transmission options, manufactures, gearing, availability, manuals and how to do it.

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dale

03-23-2004 06:53:53




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 Re: 8N std and low range in reply to Rich W., 03-22-2004 20:55:01  
i have a hupp combo i will sell. email me if interested



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Rich W

03-24-2004 13:53:58




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 Re: Re: 8N std and low range in reply to dale, 03-23-2004 06:53:53  
Dale, A hupp modification may be the best solution. What is your email address or phone number?



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jimNCal

03-23-2004 17:49:22




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 Re: Re: 8N std and low range in reply to dale, 03-23-2004 06:53:53  
I'm interested in the Hupp if Rich doesn't bite.



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SteveB(wi)

03-23-2004 06:27:48




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 Re: 8N std and low range in reply to Rich W., 03-22-2004 20:55:01  
Just be aware that the PTO speed is reduced also if that makes a difference to your operations. Only a howard transmission which goes behind the trans will lower ground speed and not PTO speed.



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jimNCal

03-23-2004 17:55:45




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 Re: Re: 8N std and low range in reply to SteveB(wi), 03-23-2004 06:27:48  
Everett made a "creeper trans" for trenching that's 98:1 that goes behind the standard trans also so it doesn't slow the PTO. My Everett equipt Jubilee will till in third or fourth gear with the Sherman combo up front in high, low, or straight thru. Not one of my most dollar sensible ideas but it sure works like a dream.
jim



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KCM

03-23-2004 06:26:38




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 Re: 8N std and low range in reply to Rich W., 03-22-2004 20:55:01  
Word of Warning: Whether it be a Step-Up, Step-Down, or Combination, the Sherman or another brand (other than the Howard) will also change the speed of the power take-off (PTO) by the same amount it changes the ground speed. So if you use a mower, slowing down the PTO may not be an ideal situation.



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DJ in Pa.

03-23-2004 05:17:53




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 Re: 8N std and low range in reply to Rich W., 03-22-2004 20:55:01  
From information gathered on this board it seems the only realistic/cost effective option, for lower gearing is to track down a sherman high/low transmission. If you want one of the rarer transmissions you will most likely pay through the nose, if the seller knows what they have.Ebay has informed a lot of people what these things are worth and driven prices on some stuff through the roof. I would think somebody would have come out with rear gear mods, because this would seem to be the best way to gear these things way down. Even with the high/low range -- low is still way to fast in reverse-in my humble opinion. I guess if the people that used these things to help make a living in the fifties wanted it bad enough, the after market would have responded. Good luck.

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Joe (IN)

03-22-2004 22:48:39




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 Re: 8N std and low range in reply to Rich W., 03-22-2004 20:55:01  
There were quite a few different auxilliary transmission manufacturers, but one stands out from the rest. The Sherman Bros. made the most popular units by a large margin. They actually produced three versions - the Step Up, the Step Down, and the Combination. Obviously, the Step Down would be ideal for your application, but they were unfortunately the rarest and hardest to find. I think you will probably find that you are looking for a Sherman Combo. They are fairly easy to come up with and will probably do what you need, although they are a bit pricey at somewhere in the $6-900 range. If you go this route, you might want to think about installing it in the virgin tractor. The shifter hole will be in a different place than your Step Up and you'd have an extra hole if you replaced it. On the other hand, if that doesn't bother you, you could always sell the Step Up and regain some of your investment. Check out John Smith's website at the link below for more information. He's got the real skinny on the different options as well as the installation instructions. Good luck!

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