Home |Gallery |Forum |Ads Today's Tractors
Today's TractorsThe Modern Tractor Resource Page

 
Featured Photo

Click to View

The Market
Tractor Parts
Tractor Manuals
Classified Ads
Tractor Shop

Features
Discussion Forum
Archives
Tractor Photos
Implement Photos
Combine Photos
Information
Model Profiles
Safety Issues
Manufacturers
Reading Room

Miscellaneous
Contact Us
Antique Tractors
Classic Trucks
Kountry Life
YT Forums
Discount Parts

[Home]
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

This is the modern view of the Today's Tractors Forum. Just login with your YT Userid and password to post. If you have trouble logging in, contact us by email to support at ytmag.com, or through the Reader Form, and we will get you going right away.

Click here to return to Yesterday's Tractors Forum Index

PowerQuad vs. PowerShift


 
Post new topic    Today's Tractors Forum Index -> Tractor Talk
View previous topic :: View next topic  
Author Message
Red Pete
Guest






Report to Moderator

PostPosted: Sun May 29, 2011 1:56 pm    Post subject: PowerQuad vs. PowerShift Reply to specific post Reply with quote

I have been thinking about trying to find a JD 7800 or 7810. Most of my experience has been with CaseIH so I would like to get opinions on which is better the PowerQuad or the PowerShift? I do have a 4450 with a PowerShift but have never used a 7000 series tractor. Can any of you guys help me out. Thanks
 
Back to top
Pat-CT
Tractor Expert


Joined: 01 Jan 2007
Posts: 1939


Report to Moderator

PostPosted: Sun May 29, 2011 2:08 pm    Post subject: Re: PowerQuad vs. PowerShift Reply to specific post Reply with quote

Both are pretty good transmissions, I personally think the power quad is alittle more work when you have to rebuild/fix any problems. What are you going to be using the tractor for I guess is the question. A power shift you don't really need the clutch as much. I personally prefer the power shift just because i find it more comfortable to operate, and its a pretty simple transmission to rebuild. And with a power shift you do not need to stop to switch from working to road gear. Plus If you can get a service manual for the 7800 or 7810 you can taylor the shifting to what you may like by altering address codes and such.

I hope this helps -pat
 
Back to top
View user's profile
JDseller
Tractor Guru


Joined: 09 Jul 2010
Posts: 4484
Location: North-East Iowa

Report to Moderator

PostPosted: Sun May 29, 2011 2:17 pm    Post subject: Re: PowerQuad vs. PowerShift Reply to specific post Reply with quote

The 19 speed power shift in the early JD 7800s was a hard shifting transmission. Nothing like the JD 4450 15 speed PS. I personally like the power quad transmission. You have four power shift gears in each range. Plus the range shifter is synchronized. On the JD 7810 you could get the 20 speed quad range. So therefore you had the faster transport speeds. The original 16 PQ transmission only had a 18 mph top speed. The 19 speed PS had a top speed of 25 mph. I own three power quad transmission tractors. I have owned a 19 sp JD 7800 I only kept it three years. I disliked the shift on it. On certain shifts it would realy jerk when cold. It was some better warmed up but not much.
 
Back to top
View user's profile
JDseller
Tractor Guru


Joined: 09 Jul 2010
Posts: 4484
Location: North-East Iowa

Report to Moderator

PostPosted: Sun May 29, 2011 2:27 pm    Post subject: Re: PowerQuad vs. PowerShift Reply to specific post Reply with quote

Pat-CT you are wrong on changing the shift points on a JD 7800. You can on a JD 7810 but not a JD 7800. Even the JD 7810 is not as adjustable as the eight thousand series, they still jerk when cold. I know this because I was in the shop when they came out. I have had my butt chewed because of guys trading their 15 speed power shift and then bought the 19 speed jerk-o- matics.

As for your comments about the service requirements. I see several PS for every one power quad I have to work on. The 16 or 20 speed power quad is pretty bullet proof. I have several customers that have high hour PQs that they have never touched, one 14,000 hours.

Another thing to consider. Are you going to be using this tractor to bale with?? or loader?? The power quad is much easier to shuttle shift compared to the PS. The later models could have the left had shuttle on them.
 
Back to top
View user's profile
Pat-CT
Tractor Expert


Joined: 01 Jan 2007
Posts: 1939


Report to Moderator

PostPosted: Sun May 29, 2011 4:36 pm    Post subject: Re: PowerQuad vs. PowerShift Reply to specific post Reply with quote

I dont mean changing shift point per say, Im not sure what applies where, but I have re calibrated an 8400 among others. When you tell the computer that its a different tractor, for example say this 7800 was to be re calibrated to a 6800, or whatever other models are in this series, the computer would see the smaller horsepower and be more inclined to slip or slow the fluid flow to the pistons within the transmission. Im not quite sure if it applies here as I haven't re calibrated a 7800.

And with them breaking more frequently, I would say its more of a operation problem then a transmission problem. However I still think I would prefer to rebuild a power shift over a power quad.

JMHO- dont want to start a spite war.
-pat
 
Back to top
View user's profile
jeremy in NE
Regular


Joined: 29 Sep 2006
Posts: 311


Report to Moderator

PostPosted: Sun May 29, 2011 4:51 pm    Post subject: Re: PowerQuad vs. PowerShift Reply to specific post Reply with quote

I don't know what they changed in the 7000 series powershifts compared to the early ones, but they are some hard shifting trannys. The quad is a lot smoother but it always seems like you want to bounce between b and c ranges in the field. We ended up getting a late model 7810 with the ivt and love it.
 
Back to top
View user's profile
brian(MN)
Regular


Joined: 22 Aug 2007
Posts: 479


Report to Moderator

PostPosted: Sun May 29, 2011 4:56 pm    Post subject: Re: PowerQuad vs. PowerShift Reply to specific post Reply with quote

We have a 7810 with the power shift, I like it, use it for tillage. No problems. recently we got a 4440 with the qaudrange, that is good too.
Brian(MN)
 
Back to top
View user's profile
JDseller
Tractor Guru


Joined: 09 Jul 2010
Posts: 4484
Location: North-East Iowa

Report to Moderator

PostPosted: Sun May 29, 2011 7:40 pm    Post subject: Re: PowerQuad vs. PowerShift Reply to specific post Reply with quote

Pat-CT I am not starting anything either. I wish the JD 7800- JD 7810 could be calibrated like the JD 8000s. You can go into them and adjust the shift points and smooth them out.

I have found that if you depress the clutch just an inch. It will trick the computer into shifting different and it is usually smoother. The hard shifts are just when they are shifting multiple clutch packs at the same time. They actually are hesitating a little. If I remember right it is 4 to 5 and 13 to 14. If not those exactly it is real close to those.

I have a friend that is a BIG guy, 6 foot ten and weight three fifty. He had a JD 7800 that shifted so hard, when it was cold, it broke the seat mounts out of the floor. He broke the back window with his head when it happened. We fixed it and he traded it on a power quad.

I will admit I am old school. I am a firm believer in KISS. KEEP IT SIMPLE AND STUPID. LOL I have found that the simpler machinery is it will last longer in the harsh environment of farming. Ever notice how old the equipment that is real high tech, with GPS and all, is when it is traded?? The big new toy lovers don"t let them get too old while they own them.
 
Back to top
View user's profile
John A.
Tractor Expert


Joined: 04 Oct 1999
Posts: 3141
Location: Florence, Tx

Report to Moderator

PostPosted: Sun May 29, 2011 8:38 pm    Post subject: Re: PowerQuad vs. PowerShift Reply to specific post Reply with quote

Red Pete, IMO the Power-shift is better, the old 20, 30, 40 Series 8speed Power-shift or the 50 series 15 speeds gave you what ever speed you needed with a push or pull of the thumb on the shifter.
The old 8 speed PS trannys were absolutely bullet proof when operating on loader work or pulling a 650 bu grain cart, and catching grain on the fly.
The 15 speed allowed one to shift and leave the RPS at one setting when the 8 speed was shifted and them needing the RPMs to match the Combines ground speed.
The only draw back to the 8 speed Power-Shift in farming operations was the 1.5 MPH jump between 4th and 5th. On the higher HP tractor more noticeable than the lower hp models.
The Quad, You always seemed to be the wrong gear when needing to shift to another range and gear in loader work or grain cart work and turning at the end of a row onto a turn row and head back down the next set.
The Quad is a bullet proof tranny too, it is not as handy as a Power Shift IMO!!!! Deere did a lot to help that tranny when they came out with the Power-Quad, but there are still time when range changes are needed and there is a slow up in the gear change process.
Where with the Power-Shift you just take you thumb and click the gears up or down with little to no clutching.
Hope this helps.
Later,
John A.
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Today's Tractors Forum Index -> Tractor Talk All times are GMT - 8 Hours
Page 1 of 1

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group
Advertisement
Repair/Service manuals available for Allis, Ford, Farmall, John Deere and most other makes and models of tractors. If you are expecting to make repairs to your tractor, check our large online catalog of manuals. We probably have just what you need! Current Special - FREE book offer.    [Click here to visit this Sponsor]

Home | Manuals | Parts

Reproduction of any part of this website, including design and
content, without written permission is strictly prohibited.
Copyright © 1997-2013 TodaysTractors.com

Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others.