Does the 345 have a posi differential? - MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information
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post #1 of 18 Old 05-12-2019, 01:56 PM Thread Starter
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Does the 345 have a posi differential?

Not to be confused with a locking differential.

k70 TT tranny and the model yr is 1995

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post #2 of 18 Old 05-12-2019, 03:07 PM
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Re: Does the 345 have a posi differential?

No it does not have a posi. At least my 1997 does not. Roger
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post #3 of 18 Old 05-12-2019, 05:44 PM
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Re: Does the 345 have a posi differential?

Only the GX 345 and then only on the '04 and '05 models.
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post #4 of 18 Old 05-13-2019, 08:05 AM
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Re: Does the 345 have a posi differential?

No, under equal traction both sides will drive. Under load the easiest wheel to spin will spin.


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post #5 of 18 Old 05-13-2019, 03:30 PM
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Re: Does the 345 have a posi differential?

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Originally Posted by inspectorudy View Post
Only the GX 345 and then only on the '04 and '05 models.
Still not posi (limited slip) There IS a diff-lock pedal though. (which actually locks the rear differential.)
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post #6 of 18 Old 05-13-2019, 04:47 PM
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Re: Does the 345 have a posi differential?

Seems pretty rare for any garden tractors to have an actual "posi" or limited slip differential. Typically they are either a standard open differential or have full locking capability (by pushing a pedal or switch). Maybe people are confusing posi and locking differential to be the same? Concept is similar with a "posi" only able to supply a certain percentage of power to one side (meaning under certain conditions you still get one wheel peel) where as a locking differential both sides are 100% locked together.
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post #7 of 18 Old 05-14-2019, 07:12 AM
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Re: Does the 345 have a posi differential?

Posi LOL!!

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post #8 of 18 Old 05-15-2019, 11:58 PM
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Quote:
Originally Posted by 6.2Blazer View Post
Seems pretty rare for any garden tractors to have an actual "posi" or limited slip differential. Typically they are either a standard open differential or have full locking capability (by pushing a pedal or switch). Maybe people are confusing posi and locking differential to be the same? Concept is similar with a "posi" only able to supply a certain percentage of power to one side (meaning under certain conditions you still get one wheel peel) where as a locking differential both sides are 100% locked together.
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Posi LOL!!
Certain year simplicity's have a k61-65 with a limited slip. I just swapped one into my xt1 cub
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post #9 of 18 Old 05-16-2019, 12:03 AM
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Here is a pic of the diff from that k61-65 it's hard to tell in the pic but those are springs above the spider gears
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Old 05-24-2019, 08:58 AM
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post #10 of 18 Old 05-24-2019, 09:10 AM Thread Starter
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Re: Does the 345 have a posi differential?

Quote:
Originally Posted by 6.2Blazer View Post
Seems pretty rare for any garden tractors to have an actual "posi" or limited slip differential. Typically they are either a standard open differential or have full locking capability (by pushing a pedal or switch). Maybe people are confusing posi and locking differential to be the same? Concept is similar with a "posi" only able to supply a certain percentage of power to one side (meaning under certain conditions you still get one wheel peel) where as a locking differential both sides are 100% locked together.
I'm not saying you are wrong as far as a garden tractor goes (as I'm the 1st to admit that I am far from being an expert on the inner workings of them), but that is not the case in a truck rear end with a limited slip(posi) transmission. As in a truck limited slip, once a wheel starts to spin, more torque pressure is sent to the opposite (stationary) rear wheel to help propel the vehicle forward.


Gentlemen, thank you for answering my initial question.

The reason I asked is that I live on a hill, when its wet ground or ice on the driveway(even on dry ground at steepest areas), posi traction sure would be of help to limit the spinning.

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post #11 of 18 Old 05-24-2019, 11:42 AM
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Re: Does the 345 have a posi differential?

I do not know of a garden tractor with positraction. I know of many with a locking differential. At 7 to 8 mph a positraction would seem to be pretty ineffective. But a locking diff would solve low-speed issues that only crop up on rare occasions.
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post #12 of 18 Old 05-24-2019, 12:21 PM Thread Starter
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Re: Does the 345 have a posi differential?

You obviously do not mow a 1 acre steep hill, as it is quite common to spin out.

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post #13 of 18 Old 05-24-2019, 01:29 PM
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Re: Does the 345 have a posi differential?

Quote:
Originally Posted by h2ofwlr View Post
You obviously do not mow a 1 acre steep hill, as it is quite common to spin out.
Back at my old house, I had the same problem when I mowed my pond damm. I ended up getting a set of bar tires loaded with RV antifreeze, added wheel weights and weight to the front. No more slipping going up or down.

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post #14 of 18 Old 05-24-2019, 02:31 PM
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Re: Does the 345 have a posi differential?

Proper ballast will help avoid wheel spin, even on hills.

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post #15 of 18 Old 05-28-2019, 11:42 AM
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Re: Does the 345 have a posi differential?

HDAP tires work well, too. I rarely ever use my difflock on my hills or driveway in the winter. I dont use chains in the winter, either (I use five suitcase weights instead). The tires make the difference - and that pertains to anything be it a tractor or a car.

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