Tractor HP: Kubota Review  -- Kubota Tractors Discussion Forum and Review Tractor HP: Kubota Review -- Kubota Tractors Discussion Forum

  parts   |   manuals   |   discussion   |   photos   |   podcast   |   reviews   |   specs   |   dealers   |   classifieds   |   contact   |   faq   |   myProfile   |   home          Login Now | Sign Up


FAQ:   What is a tractor?

Forum Index
New As Posted | Active Subjects



www.emerichsales.com - New & Used Equipment
          View Tractors For Sale!


www.partsbynet.com - Lawn and Garden Equipment Parts


Bernardsville Landscape Lighting
Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 05-04-2002, 19:36 Post: 38147
Nellie



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

2
Filter by User
 Tractor HP

Someone responded to another post and indicated the B-2910 HST is only 22 HP. This raises the question as to how to rate a tractor. I know that the PTO HP is 22, but does this mean the wheel HP is also 22?






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 05-05-2002, 05:35 Post: 38156
TomG

TP Contributor

Join Date: Feb 2002
Location: Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 5406

2
Filter by User
 Tractor HP

Wheel, or drawbar HP which is another term used, differs from PTO HP. Drawbar HP depends in part on traction, which in turn depends in tire type, weight, ballast etc. that can differ a lot on particular tractor configurations. There undoubtedly is a standard definition for drawbar HP, but most people don't find it too useful for comparing tractors because most tractors probably don't conform to the standard definition very well.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 05-05-2002, 13:07 Post: 38169
Nellie



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

2
Filter by User
 Tractor HP

Just to clarify, I want to know what HP I should rate my tractor at when considering implements. I know the PTO HP is 22, but what about towable implements that don't use the PTO?






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 05-05-2002, 19:41 Post: 38179
DRankin



View my Photos

View my Photos  Pics
Join Date: Jan 2000
Location: Northern Nevada
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 5105
 Tractor HP

Terms can be pretty confusing. Deere rates compact tractors by gross horsepower and PTO hp. Gross is what a free standing engine will produce before it loses anything through the turning of gears or the pumping of hydraulic fluid. PTO hp is what the net is after such losses; in other words, it is what is left over to do the actual work. One must assume that drawbar hp means what the machine would produce if attached to a dynometer or the horsepower produced at the wheels. It would certainly be closer to the PTO hp than the gross hp rating. HST models generally lose one or two horsepower more at the PTO than the same model with a gear tranny. My JD 4100 Gear has 20 gross hp, and 17 at the PTO. The 4100 HST is rated at 20/16.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

 05-06-2002, 05:20 Post: 38186
TomG

TP Contributor

Join Date: Feb 2002
Location: Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 5406

2
Filter by User
 Tractor HP

I interpret all recommended HP specs from implement manufacturers as PTO HP, even for implements such as blades and plows. I think drawbar HP is an older rating definition that hasn't been used much since the mid-80's. However, when rated DB HP is less than PTO HP, which makes sense. I can lug my engine with a posthole auger, but the tires spin before the engine quits with a box scraper. My mid-80's Ford 1710 is rated 24 PTO HP and 20 DB HP. I assume that the DB HP ratinf is in 4wd, with ag tires and without ballast.

I think that manufacturers of blades plows etc. define their specs from typical differences between PTO and DB HP. Given recommended HP's, owners of relatively light but powerful tractors who have turf tires may have some traction problems, but should be able to manage by going slower, taking smaller bites, adding ballast etc.

The Nebraska Farm Tests (available on-line) provide very detailed test information on power pulling etc., but only for farm tractors. The tests have been conducted for decades and were designed to allow farmers to actually compare various tractors and configurations. The problem then and now is that comparisons are virtually impossible using only manufacturer specs.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us | Stumble This

Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

Thread 38147 Filter by Poster:
DRankin 1 | Nellie 2 | TomG 2 |




Most Viewed

+ Kubota AT70s Rear Tine Tiller
+ Kubota HST GST Shuttle or Gear Transmission?
+ Best Boom Mower for Kubota B2710 Tractor
+ Definition of Tractor Loader Breakout force ?
+ Kubota B3200 vs. JD 2720
+ New Kubota L3240 First Look Review
+ Kubota Transmission Fluid SUDT
+ Kubota BX2230 VS kIOTI CK20HST
+ KUBOTA Tractor Trouble Free Quality
+ kubota bx25 vs john deere 2720

Most Discussion

+ How to match Truck to Trailer
+ New Kubota L3240 First Look Re
+ Kubota Number 1 in Compact Tra
+ KUBOTA Tractor Trouble Free Qu
+ Source for after market produc
+ 3-Point Quick Hitch
+ B 7100 ST - Making the Leap
+ Kubota Transmission Fluid SUDT
+ Kubota vs John Deere Compact T
+ L3130HST vs. JD4310Hydro HELP

Newest Topics

+ 2000 B2710 I need a loader dealer wants over 4K an
+ Upgrading the Factory 145amp Alternator to 40 Amp
+ Kubota BX2750 Snowblower Fan Shear Pin Alignment
+ Size Kubota for Homeowner Use
+ I need some OEM Quality decals for a B7500 DT-TLB
+ Kubota 4750DT Fuel Venting
+ B1700 Hydostatic unit leaking
+ Kubota B2710 New to meadvice
+ Kubota L4330 three point hitch won t rise
+ Kubota B7200 Hydraulic leak













Turbochargers for Tractors and Industrial Machines
Cab Glass for Tractors and Industrial Machines

Alternators for Tractors and Industrial Machines
Radiators for Tractors and Industrial Machines

Driveline Components for Tractors and Industrial Machines
Starter Motors for Tractors and Industrial Machines