Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

Hydrostac Drive


 
Post new topic    
View previous topic :: View next topic  
Author Message
Dale in Nw wa
Regular


Joined: 24 Apr 2013
Posts: 115


Report to Moderator

PostPosted: Sat Jan 25, 2014 8:41 pm    Post subject: Hydrostac Drive Reply to specific post Reply with quote

I dont have a Hydrostatic drive lawn tractor but I have a Question Are they driven by a belt or is there as pump that is hooked to the motor. I looked up some of the axles and they have a belt pulley on them. So KNOW I AM TOTALY CORNFUSED LOL Dale
 
Back to top
View user's profile
Tom Arnold
Tractor Expert


Joined: 23 Aug 2007
Posts: 1718


Report to Moderator

PostPosted: Sat Jan 25, 2014 9:03 pm    Post subject: Re: Hydrostac Drive Reply to specific post Reply with quote

Most of the lawn tractors use a vertical shaft engine that belt drives the trans-axle UNIT. Inside that trans-axle unit is a hydrostatic pump that pushes oil into a drive motor which in turn, applies rotary power to the differential gears.

These are self-contained units. There are some garden tractors with horizontal shaft engines that use a shaft to apply power to the hydrostatic trans-axle.

Hydrostatic pumps also have what is called a "charge pump" that keeps a constant flow of oil passing through the hydro pump to keep it full of oil as well as to provide cooler oil. On certain models of hydro trans-axles, there are ports leading to the charge pump and those ports can be used to provide hydraulic power for cylinders to raise/lower attachments, make a snow blade pivot right and left or allow power steering to be added.

You normally do not see this feature on lawn tractors but it is not unusual to find it on garden tractors.

Whether a belt or a drive shaft is used to connect the engine to the trans-axle, both are spinning the hydro-static pump.

Hopefully, the above will clear up your confusion.
 
Back to top
View user's profile
jeffcat
Tractor Guru


Joined: 28 Sep 2004
Posts: 12725


Report to Moderator

PostPosted: Sun Jan 26, 2014 7:59 pm    Post subject: Re: Hydrostac Drive Reply to specific post Reply with quote

Let us confuse him a little more. You understand direct drive."drive shaft" Then you have belt drive. "This is used on a he--l of a lot of lawn tractors. Hydrostatic is usually self contained in a housing as you described. The last is Hydrive. This is used on VERY heavy duty garden tractors. It is a BIG motor with a true hydraulc pump bolted to the engine shaft. Hoses go to a control valve and then to a true hydralic motor on a transmission. Look at any of the Case or Uingersoll Rand garden tractors. I have a 224 and it is a very interesting beast. Any more quesrions? Jeffcat
 
Back to top
View user's profile
Tom Arnold
Tractor Expert


Joined: 23 Aug 2007
Posts: 1718


Report to Moderator

PostPosted: Mon Jan 27, 2014 6:08 am    Post subject: Re: Hydrostac Drive Reply to specific post Reply with quote

With all due respect..... your post tends to confuse things unnecessarily.

The Hy drive system which is employed exclusively on Colt, Case and Ingersoll garden tractors, is entirely different to "hydrostatic"drive systems. While both systems use oil to transfer engine power to the rear wheels, the design of the pumps are vastly different. Hydrostatic drives are a closed system whereas hydraulic drives are an open system. Both have their pro's and con's.

The question was entirely about hydrostatic drive systems. Injecting hydraulic drive into the discussion does little to answer the OP's original query, IMO. Secondly, the Ingersoll tractor company has no relationship to the other company known as Ingersoll-Rand. Yes, there is a similarity in name but that is the extent of it. However, that is a very common mistake that is made all too often.

My only purpose with the above post is to set the record straight so that anyone else reading this thread will not conclude that Ingersoll tractors were ever made by the Ingersoll-Rand corporation.
 
Back to top
View user's profile
MNGB
Long Time User


Joined: 02 Jan 2005
Posts: 1421
Location: WC MN

Report to Moderator

PostPosted: Mon Jan 27, 2014 7:00 am    Post subject: Re: Hydrostac Drive Reply to specific post Reply with quote

Thanks Tom I agree 100%
 
Back to top
View user's profile
:   
Post new topic    Yesterday's Tractors Forum Index -> Garden Tractors All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. 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. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters