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 

shaft drive question


 
Post new topic    
View previous topic :: View next topic  
Author Message
Don B.
Regular


Joined: 29 Jun 2009
Posts: 136


Report to Moderator

PostPosted: Tue Mar 19, 2019 2:28 pm    Post subject: shaft drive question Reply to specific post Reply with quote

I happen to own 4 Ariens S series and GT's. but have seen this on other shaft drive machines. They have a fiber disc that bolts separately to the hub on the flywheel then the driveshaft bolts, 90* to the same disc. They appear to be some kind of plastic, almost fiberglass-ish.
What would it hurt, to either; bolt the driveshaft direct to the hub on the flywheel, or make those discs from steel, more or less like a big washer? These aren't the rubber shaft couplers, as used on older Cub cadets.
I'm just completing an engine swap on the S-16H, and bolting the driveshaft to the engine is one of the few things left to do.
I don't see any kind of deterioration on these discs, but my tractors are all 40+ years old now. I do know of people who have had those discs come apart.
 
Back to top
View user's profile
T.R.K.
Tractor Expert


Joined: 14 Apr 2013
Posts: 2031


Report to Moderator

PostPosted: Tue Mar 19, 2019 5:21 pm    Post subject: Re: shaft drive question Reply to specific post Reply with quote

The disk is in the drive shaft to allow the frame to flex without damaging anything. The disk just warps a bit. I am pretty sure if the
manufacturer thought they could get by without it, they would have. A rigid assembly would probably shorten the life of the bearings and
shafts at each end of the drive shaft.

If you need new ones, I bet someone on the internet is selling them.
 
Back to top
View user's profile
Russ from MN
Tractor Guru


Joined: 11 Feb 2006
Posts: 9355
Location: N MN

Report to Moderator

PostPosted: Wed Mar 20, 2019 5:06 am    Post subject: Re: shaft drive question Reply to specific post Reply with quote

Like t.r.k. said, the fiber disc is there to give it some flexibility. Since it's nearly impossible to align something
perfect, most all drivelines have some sort of flexible coupling to allow for misalignment.
 
Back to top
View user's profile
Don B.
Regular


Joined: 29 Jun 2009
Posts: 136


Report to Moderator

PostPosted: Thu Mar 21, 2019 5:23 pm    Post subject: Re: shaft drive question Reply to specific post Reply with quote

Yes but not everyone repairs their machines with 110% oem parts. Most who come on to these forums have modified their machines somewhere along the line. And with the highway robbery prices that Ariens wants to charge for just about anything, I often look for alternatives. I wasn't thinking about misalignment being the reason for the flex discs. But I saw on a forum somewhere where someone else who had done what I was thinking about doing, Don't remember what brand of machine.
 
Back to top
View user's profile
Mule Meat
Long Time User


Joined: 14 Jul 2016
Posts: 990


Report to Moderator

PostPosted: Thu Mar 21, 2019 8:24 pm    Post subject: Re: shaft drive question Reply to specific post Reply with quote

They are called Flex Plates or flex couplers.

They are used to allow a slight mis-aligned shaft to operate smoothly and to absorb shock loads to the drive line.

With out one your drive line would have one heck of a vibration unless your drive shaft is aligned exactly straight and balanced perfectly..
 
Back to top
View user's profile
DoubleO7
Tractor Expert


Joined: 27 Oct 2017
Posts: 2201
Location: Crystal River, FL

Report to Moderator

PostPosted: Fri Mar 22, 2019 3:46 pm    Post subject: Re: shaft drive question Reply to specific post Reply with quote

Mule Meat wrote:
(quoted from post at 01:24:08 03/22/19) They are called Flex Plates or flex couplers.

They are used to allow a slight mis-aligned shaft to operate smoothly and to absorb shock loads to the drive line.

With out one your drive line would have one heck of a vibration unless your drive shaft is aligned exactly straight and balanced perfectly..


They also help isolate the impulses of the engine as it fires away on one or two cylinders.
 
Back to top
View user's profile
kevinstuff
Regular


Joined: 20 Jun 2013
Posts: 180


Report to Moderator

PostPosted: Mon Mar 25, 2019 11:57 am    Post subject: Re: shaft drive question Reply to specific post Reply with quote

older simplicity old cast iron 8 to16hp horzontal Briggs has those disc also , some one told me they handle up to
25hp , gearbox bearings would probably fail quickly without the disk.
 
Back to top
View user's profile
MNGB
Long Time User


Joined: 02 Jan 2005
Posts: 1475
Location: WC MN

Report to Moderator

PostPosted: Tue Mar 26, 2019 4:59 am    Post subject: Re: shaft drive question Reply to specific post Reply with quote

Don B. wrote:
(quoted from post at 15:28:11 03/19/19) I happen to own 4 Ariens S series and GT's. but have seen this on other shaft drive machines. They have a fiber disc that bolts separately to the hub on the flywheel then the driveshaft bolts, 90* to the same disc. They appear to be some kind of plastic, almost fiberglass-ish.
What would it hurt, to either; bolt the driveshaft direct to the hub on the flywheel, or make those discs from steel, more or less like a big washer? These aren't the rubber shaft couplers, as used on older Cub cadets.
I'm just completing an engine swap on the S-16H, and bolting the driveshaft to the engine is one of the few things left to do.
I don't see any kind of deterioration on these discs, but my tractors are all 40+ years old now. I do know of people who have had those discs come apart.


Put the disc back in you state they are in good condition use them there are in there for the reasons posted
GB in MN
 
Back to top
View user's profile
Don B.
Regular


Joined: 29 Jun 2009
Posts: 136


Report to Moderator

PostPosted: Tue Mar 26, 2019 9:19 am    Post subject: Re: shaft drive question Reply to specific post Reply with quote

MNGB wrote:
(quoted from post at 13:59:04 03/26/19)
Don B. wrote:
(quoted from post at 15:28:11 03/19/19) I happen to own 4 Ariens S series and GT's. but have seen this on other shaft drive machines. They have a fiber disc that bolts separately to the hub on the flywheel then the driveshaft bolts, 90* to the same disc. They appear to be some kind of plastic, almost fiberglass-ish.
What would it hurt, to either; bolt the driveshaft direct to the hub on the flywheel, or make those discs from steel, more or less like a big washer? These aren't the rubber shaft couplers, as used on older Cub cadets.
I'm just completing an engine swap on the S-16H, and bolting the driveshaft to the engine is one of the few things left to do.
I don't see any kind of deterioration on these discs, but my tractors are all 40+ years old now. I do know of people who have had those discs come apart.


Put the disc back in you state they are in good condition use them there are in there for the reasons posted
GB in MN

I did, just worried about the age, don't know if I would see signs of deterioration before it went kaboom like one would see in a rubber rag joint or even a plain old u joint.
I know of someone who has a tractor like this one and remember him telling a story on another forum that I frequent , detailing the Carnage from when one of these discs self destructed. I just repowered this machine and don't want to go thru that mess.
 
Back to top
View user's profile
Bob
Tractor Guru


Joined: 03 Jan 1998
Posts: 53669


Report to Moderator

PostPosted: Tue Mar 26, 2019 9:53 am    Post subject: Re: shaft drive question Reply to specific post Reply with quote

Don B. wrote:
(quoted from post at 17:28:11 03/19/19) I happen to own 4 Ariens S series and GT's. but have seen this on other shaft drive machines. They have a fiber disc that bolts separately to the hub on the flywheel then the driveshaft bolts, 90* to the same disc. They appear to be some kind of plastic, almost fiberglass-ish.
What would it hurt, to either; bolt the driveshaft direct to the hub on the flywheel, or make those discs from steel, more or less like a big washer? These aren't the rubber shaft couplers, as used on older Cub cadets.
I'm just completing an engine swap on the S-16H, and bolting the driveshaft to the engine is one of the few things left to do.
I don't see any kind of deterioration on these discs, but my tractors are all 40+ years old now. I do know of people who have had those discs come apart.


If you are worried, you can make a couple of simple "driveshaft safety loops" to keep the driveshaft relatively centered IF a coupling breaks so it can't whip around and break things.

The photo below shows one on a hot-rod car, obviously your little tractor has a MUCH smaller driveshaft, but the principle would be the same.



 
Back to top
View user's profile
Don B.
Regular


Joined: 29 Jun 2009
Posts: 136


Report to Moderator

PostPosted: Tue Mar 26, 2019 2:19 pm    Post subject: Re: shaft drive question Reply to specific post Reply with quote


yeah I've seen those, used to do lots and lots of car shows, but working on the shuttle buses at work I see em all the time, its req'd on those.
 
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). We have the parts you need to repair your tractor - the right parts. Our fast shipping, low prices and years of research make us your best choice when you need parts. Shop Online Today. [ 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