JimNCal

[Hills of TN]

Jim, is that your Sherman unit on Ebay?

 

[jimNCal]

Yep. Lots of lookers but, looks like another that won't sell over my minimum bid(investment) if it sells at all.

jb

 

[semlin]

(quoted from post at 04:22:51 09/05/09) Yep. Lots of lookers but, looks like another that won't sell over my minimum bid(investment) if it sells at all.

jb

apart from getting out of the mud, what are the practical advantages/applications of having a high low range in a fergie?

 

[Bob (Aust)]

Won't necessarily help you get out of mud. Not necessarily designed to deliver more torque to the rear wheels.

Mostly intended to further reduce forward ground speed whilst operating at normal engine/PTO RPM for certain applications - e.g. a rotary hoe or cultivator - where 1st gear give a ground speed which is too fast for the application.

[b:b68549f3eb]John (UK). [/b:b68549f3eb]Will a Sherman fit my '53 TEA20 without modification or loss of functionality (e.g. gear shift starter)?

Bob in Oz
'53 TEA20

 

[Hills of TN]

Two questions:

1. How difficult would it be to install (or have installed, in my case - mechanical abilities pretty limited.)

2. Do you have a step-down only unit? (Not really concerned about the functionality of the shift starter, since my TO20 is key-started.)

 

[jimNCal]

Shermans, as do ALL 'pre-trans' auxiliaries, slow your TRANSMISSION driven PTO by the same ratio as they do groundspeed. NO help in running a 'rototiller'.

What they are excellent at is, splitting the transmission so that you can have 'in-between' gearing for hills or tight spots. OR, in the case of the 'high' range, allows you to run your PTO at reduced engine RPM's and save wear and fuel.

 

[Richard L]

Hills of Tn, the shifter starter was put on there as a safety feature. Please think about returning it for safety purposes.

 

[jimNCal]

Aside from the time involved splitting your tractor, the installation is pretty straightforward. Only things not simple wrenching is the hole in the housing and the 'pre-load' steps, which, are still pretty simple once you understand why this needs to be done.

Sorry, I do not have a 'Step-DOWN only', other than a couple of the ultra rare 9.25:1 'Creepers'(read BIG $$).
My last Step-down was a bit of a disappointment on eBay recently. It went for minimum bid/$675.00 which barely covered my investment. Oh well. Such is life on eBay in this economy.

 

[semlin]

jim, thanks for the explanation. i did not realize the high range was an overdrive compared to stock. i also did not realize it was intended to provide in between gears. that is a neat idea and could be useful with my loader as i am finding that i need something between 1st and 2nd to get it to dig.

what is the reduction (and overdrive) on a sherman?

 

[jimNCal]

1.55:1 up and same down in the Combos. The Step-DOWN onlys came 1.55:1, 2.42:1, and the "Creeper" is 9.25:1 in a "Combo" case.

 

[semlin]

(quoted from post at 05:24:59 09/06/09) 1.55:1 up and same down in the Combos. The Step-DOWN onlys came 1.55:1, 2.42:1, and the "Creeper" is 9.25:1 in a "Combo" case.

not sure i follow. you mean 1.55:1 in low and 1:1 in high, or did they reverse it so it was 1:1.55 in high (.645:1) ?

if it was 1:1, were the step-down and creepers a fixed gear that was always engaged?

thanks for the lesson by the way.

 

[jimNCal]

Sorry for not being more clear... 1.55:1 UP from standard and 1.55:1 DOWN from standard. Your .645 is actually technically correct but, it's easier to explain it the other way.

Shifter uses a backwards 'h' to get to all 3 ranges.

Creeper is an extreme Step-down of 9.25:1 or could be run 'straight thru'/(standard) if you wanted your 'regular' gears.