Torque Amplifier question for mowing

Farmall H, HV & Super H, 300 & 350, 1939-1958

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Torque Amplifier question for mowing

Postby ShawnAgne » Sat Jul 22, 2017 6:33 pm

Trying to find the best speed to mow grass on the 300. Is there any reason why I couldn't use the TA when mowing? 2nd is a little slow and 3rd is a little fast. 4th with the TA looks like it may be just right but want to double check first before doing it.
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Re: Torque Amplifier question for mowing

Postby tinnerjohn » Sat Jul 22, 2017 7:47 pm

I don't know what type of mower your using, but with a sickle bar or haybine I mowed a lot of hay with a 450 Diesel and a 560 and used the TA a lot. Just don't go downhill in TA, you will freewheel. John

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Re: Torque Amplifier question for mowing

Postby ShawnAgne » Sat Jul 22, 2017 8:35 pm

Woods L306, my yard is flat so not an issue. Thanks for the reply.
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Re: Torque Amplifier question for mowing

Postby Denny Clayton » Sun Jul 23, 2017 10:02 am

My impression of the T/A is that is not for use at a constant engagement. Rather, it is meant as a temporary use to get you through a tough spot such as plowing thru a wet spot and you need additional power for a short time. Unless you are mowing heavy lush grass and it is lugging you down use third and throttle down a little to get the ground speed you like.
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Re: Torque Amplifier question for mowing

Postby Super A » Sun Jul 23, 2017 5:29 pm

Denny Clayton wrote:My impression of the T/A is that is not for use at a constant engagement. Rather, it is meant as a temporary use to get you through a tough spot such as plowing thru a wet spot and you need additional power for a short time. Unless you are mowing heavy lush grass and it is lugging you down use third and throttle down a little to get the ground speed you like.


It won't hurt it to run in low range (TA lever back.) As mentioned with these older mechanical TAs do not go downhill in TA because it will freewheel.

Al
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Re: Torque Amplifier question for mowing

Postby Matt Kirsch » Thu Aug 03, 2017 1:23 pm

Yeah, the part that wears out, making it slip in TA, gets all its wear while the unit is in direct.

It's a type of overrunning clutch that you'll hear referred to as "the ramp and rollers." When in TA is in TA, the ramp and rollers are locked and driving. When the TA is direct, the ramp and rollers are overrunning each other, wearing.

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Re: Torque Amplifier question for mowing

Postby Super A » Thu Aug 03, 2017 5:12 pm

Backwards. In direct, the TA is locked, it turns as a solid unit, as if it was a solid shaft. In TA (lever back) the planetary gears operate.

The wear of running in TA is negligible. Shifting it improperly will add wear much faster (and potentially catastrophically) than normal use in TA. Basically improper use wears flat spots on the ramps and rollers, and you eventually loose the TA.

Al
White Demo Super A Restoration Updates

Let us pray for farmers and all who prepare the soil for planting, that the seeds they sow may lead to a bountiful harvest.
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