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 01-17-2001, 20:31 Post: 23490
Rick Cosman



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 fwd use

Do you guys use your fwd as needed or all the time? I don't know whether to treat my tractor like my truck or not. Thanks






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 01-17-2001, 22:21 Post: 23492
Jim Youtz



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 fwd use

Rick, just let your use be your guide. I never use 4wd while mowing or crossing turf, due to potential for tearing up the lawn. I never use it on paved surfaces. Otherwise, 4wd improves performance on just about any other use I can think of.






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 01-18-2001, 05:00 Post: 23497
TomG

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 fwd use

I avoid using 4wd on pavement. The axle drive ratios on most tractors cause the front wheels to lead the rears slightly. I've heard that this lead causes added stress on the front drive when a tractor is on high traction surfaces.






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 01-18-2001, 05:07 Post: 23498
Ted Kennedy



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 fwd use

Rick, Yes and no. I think Jim and Tom are on target. The only time that I use FWD on dry pavement is when I need to load heavy material, and then I only drive in a straight lin;, into, and back out of, the pile.






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 01-18-2001, 06:48 Post: 23500
Roger L.



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Rick, none of the common compact tractors have FULL TIME four wheel drive. This is because they do not have a differential between the front and rear drive shafts. They have PART TIME four wheel drive. Treat it just like an older CJ jeep or 4wd pickup - the kind with the locking hubs on the front wheels.






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 01-18-2001, 06:55 Post: 23501
Bird Senter

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 fwd use

I guess I'll just echo what the others have said. I only use 4WD when needed, and never on pavement (unless I've been using 4WD and forget to take it out - which fortunately doesn't happen very often).






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 01-19-2001, 04:36 Post: 23517
TomG

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Roger, as is often the case, comes through with a mechanically interesting idea. It never occurred to me that the distances traveled by the wheels are different front to back as well as left to right in a turn. Live and learn--all you have to do is listen I've found. At a more basic level, I've noticed that only 3 of the 4 wheels spin when using the differential lock while in 4wd. Guess it goes without saying that locking the rear differential doesn't lock the front one.






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 01-19-2001, 07:11 Post: 23518
Art White



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 fwd use

Tom you should balance your air pressure from front to rear to equal out your lead-lag ratio. It just takes a couple of minutes to do and it does relieve a lot of stress on the drive system.






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 01-19-2001, 08:16 Post: 23519
mbjacobs



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 fwd use

Art, How would you "balance your air pressure from front to rear to equal out your lead-lag ratio"? Do you use the tire manufacturer's tables on rolling radius? Or, is there an easier way?






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 01-19-2001, 09:26 Post: 23521
Todd



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 fwd use

TomG,
Have you ever seen the "BiSpeed Turn" option on Kubota's B2100 and 2400 tractors. It was supposed to compensate for the difference in tracking radius between the front and rear wheels. I loved the idea until two dealers told me it was a service intensive option, to put it nicely. I wonder if New Holland's pivoting front axle compensates for the mismatch. I don't have any experience with it as I have a kubota, but I'd be interested to know. With an open differential in front and back, if the outside wheel tracks are the same length in a turn, you probably wouldn't ever need the 2WD option.






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Discussion Boards > Active Subjects > Messages as Posted > Tractor Projects Forum

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Art White 3 | Bird Senter 1 | Jim Youtz 1 | mbjacobs 1 | Rick Cosman 1 | Roger L. 2 | Ted Kennedy 1 | Todd 1 | TomG 5 |




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