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Mattman 
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Joined: 20 Dec 2012
Location: Plover, WI
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 Topic: Power shift for pulling?
Posted: 26 Aug 2024 at 6:50am |
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I have a power director 7040 and love it. I'm looking at a power shift 7040 tractor to make into a puller. Is this a mistake? Should I be looking for a power director to pull with? By the way, I cant pull with my current 7040 as it is a low hour family heirloom. Thanks everyone.
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DrAllis
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Joined: 12 Sep 2009
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Posted: 26 Aug 2024 at 7:21am |
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HOW MANY HP ARE YOU INTENDING TO RUN ??
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Mattman
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Posted: 26 Aug 2024 at 7:56am |
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No more than 220 horses
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DrAllis
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Posted: 26 Aug 2024 at 8:34am |
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Power Shift is fine, but less speed choices.
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PaulB
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
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Posted: 26 Aug 2024 at 2:30pm |
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Many have pulled with Power-Shift-Transmissions. I've even done it myself. However once you get into it are you absolutely sure you will never decide to go faster with more HP? With that in mind I'd be looking for a gear drive instead of a Power-Shift. With my hands on experience in high HP pullers NEVER downshift with a Power-Shift. Find out what gear you can handle and never go any higher than that.
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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bigal121892
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Location: Nebraska
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Posted: 26 Aug 2024 at 2:52pm |
 PaulB wrote:
Many have pulled with Power-Shift-Transmissions. I've even done it myself. However once you get into it are you absolutely sure you will never decide to go faster with more HP? With that in mind I'd be looking for a gear drive instead of a Power-Shift. With my hands on experience in high HP pullers NEVER downshift with a Power-Shift. Find out what gear you can handle and never go any higher than that. |
Why don't you downshift?
Edited by bigal121892 - 26 Aug 2024 at 2:52pm
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DougG
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Location: Mo
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Posted: 26 Aug 2024 at 3:00pm |
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Well in my past experience with a Power Director- some shifts can be smooth some not- you.ve got tons of weight behind you- then changing the inertia of everything - can work out but sends shock thru the drivetrain,, Powershifts have to be tight ; just my opinion now
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PaulB
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Posted: 26 Aug 2024 at 3:50pm |
bigal121892 wrote:
PaulB wrote:
Many have pulled with Power-Shift-Transmissions. I've even done it myself. However once you get into it are you absolutely sure you will never decide to go faster with more HP? With that in mind I'd be looking for a gear drive instead of a Power-Shift. With my hands on experience in high HP pullers NEVER downshift with a Power-Shift. Find out what gear you can handle and never go any higher than that. |
Why don't you downshift?
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Things don't happen when upshifting, however from PRESONAL experience with HIGH HP pulling, downshifting is when things break.
Edited by PaulB - 26 Aug 2024 at 6:45pm
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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bigal121892
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Location: Nebraska
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Posted: 26 Aug 2024 at 6:42pm |
PaulB wrote:
bigal121892 wrote:
PaulB wrote:
Many have pulled with Power-Shift-Transmissions. I've even done it myself. However once you get into it are you absolutely sure you will never decide to go faster with more HP? With that in mind I'd be looking for a gear drive instead of a Power-Shift. With my hands on experience in high HP pullers NEVER downshift with a Power-Shift. Find out what gear you can handle and never go any higher than that. |
Why don't you downshift?
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Things don't happen when upshifting, however from PRESONAL experience with HIGH HP pulling, downshifting is when thigs break. |
Thanks for the reply. I have never pulled, and assumed it was something like that, but you know what assuming gets you. :)
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injpumpEd
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Posted: 26 Aug 2024 at 7:30pm |
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the downshift isn't quick enough for sled pulling, my 7040 PD that I pull on occasion is fine to shift up at start of pull, but have tried downshift at end and it stops, then takes off again, very abrupt, so I just quit using it to downshift. I think mods have been done to them to make them shift quicker, but mine is all original in the PD section.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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DrAllis
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Posted: 26 Aug 2024 at 7:46pm |
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The speed with which the clutch packs release and engage has to be quickened up as the HP increases. 220 HP isn't an issue but 400 HP sure would be.
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Joe(OH)
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Posted: 27 Aug 2024 at 7:33am |
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A cousin of mine was at a tractor pull in the '70s after Allis came out with a power shift transmission. There was one pulling and he up shifted and down shifted. The announcer made the comment " That tractors got more gears than Carters got liver pills!" I dont know what year or how the tractor did, but thought it was a funny story.
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Life is simpler when you plow around the stump.
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NEVER green
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Posted: 27 Aug 2024 at 8:32am |
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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DrAllis
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Posted: 27 Aug 2024 at 7:02pm |
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That was a wonderfully hook !!! Did you raise the power shift regulating pressure any ??
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DrAllis
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Posted: 28 Aug 2024 at 7:25am |
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The Allis 12-speed Power Shift should look pretty good in classes where your top speed will never be above 6MPH. When in LOW range your speeds are 1 MPH apart from 5th on down and are pretty nice clean/smooth shifts. Where the Allis tranny wouldn't look good is where you are expecting ground speeds of over 6 MPH as the spread between gear selections becomes quite wide.
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Mikez
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Posted: 28 Aug 2024 at 7:54am |
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Is that you pulling Tom
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NEVER green
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Posted: 28 Aug 2024 at 8:07am |
DrAllis wrote:
That was a wonderfully hook !!! Did you raise the power shift regulating pressure any ?? |
No, just the torque limiter was beefed up.
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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NEVER green
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Posted: 28 Aug 2024 at 8:09am |
Mikez wrote:
Is that you pulling Tom |
Nope, brother always pulls that one, wife is in second one though.
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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AC7060IL
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Posted: 28 Aug 2024 at 6:39pm |
NEVER green wrote:
Mikez wrote:
Is that you pulling Tom |
Nope, brother always pulls that one, wife is in second one though. |
Congratulations to your brother & wife ~ they both had great pulls. The Power-Shift was a very smooth pull !! I felt like he was never going to stop? Thanks for sharing the video.
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