Center of Gravity--Help!

Posted by Allan in NE on April 02, 2005 at 01:27:38 from (148.78.243.25):

Mornin' Guys,

Okay, as I've stated before, I'm just not too darned bright and I come here to learn from you folks. Now, I’m running into a little situation where I could use your collective knowledge and insight, 'cause I guess Mom didn't learn me good. :>)

Farmed forever with tractors A and B. Went broke and sold out. Now, while having silly aspirations to get back all of my lost toys, I buy tractors C and D to replace my old ones. Fine. So far, so good.

Tractors C and D are identical in every way to the old tractors A and B except for the darned rear tire sizes. Old ones had 16.9 x 38 tires and the new tractors have 18.4 x 38. Also, new tractors both have fluid, the old ones did not.

Now, when I hook up the very same identical 3-point equipment to these tractors and on absolutely level ground, I’ve got a light front-end issue going on that I never used to have before.

The first time I noticed it, was when I bought a little rotary mower; seemed like that little feller was awfully darned heavy back there for some reason. :>(

Everything is the same except the tire sizes and the fluid and the difference between the tractors has reached something of a safety threshold around here. Ya can’t control the tractor with the front end swingin’ up in the air all the time. Plus, it’s gotta be kinda hard on brakes. :>)

Anyway, how can the larger diameter of those rear tires move the center of gravity rearward so darned much? It would seem like it should be the other way around, shouldn’t it?

Or is it just simply the torque of the larger tires vs the torque of the smaller diameter tires that is causing my headaches?

Yes, I know the cure is to add weight to the front end of both tractors and I’m in the process of doing just that. But, I’d just like to understand the “why” of the thing?? :>(

Thanks for instructing an old dog,

Allan

Follow Ups:

• Re: Center of Gravity--Help! Dixieland 06:59:57 04/03/05 (0)
• Re: Center of Gravity--Help! Nuther Tare Question? 08:26:57 04/02/05 (2)
  • Re: Center of Gravity--Help! Allan in NE 09:18:34 04/02/05 (1)
    • Re: Center of Gravity--Help! Dug 18:27:44 04/02/05 (0)
• Re: Center of Gravity--Help! billyiron 07:03:27 04/02/05 (0)
• Re: Center of Gravity--Help! Sloroll 06:32:03 04/02/05 (1)
  • Re: Center of Gravity--Help! Allan in NE 07:08:04 04/02/05 (0)
• Re: Center of Gravity--Help! Joel Harman 05:38:13 04/02/05 (1)
  • Re: Center of Gravity--Help! Allan in NE 07:13:23 04/02/05 (0)
• Re: Center of Gravity--Help! Indydirtfarmer 05:14:44 04/02/05 (2)
  • Re: Center of Gravity--Help! RustyFarmall 05:39:41 04/02/05 (1)
    • Re: Center of Gravity--Help! Indydirtfarmer 05:49:28 04/02/05 (0)
• Re: Center of Gravity--Help! Paul in Mich 04:40:48 04/02/05 (0)
• Re: Center of Gravity--Help! Mike M 04:21:12 04/02/05 (0)
• Re: Center of Gravity--Help! Coloken 03:50:08 04/02/05 (2)
  • Re: Center of Gravity--Help! Vern-MI 04:11:31 04/02/05 (1)
    • Re: Center of Gravity--Help! Allan in NE 07:03:39 04/02/05 (0)
• length of 3pt lower arms Tx Jim 03:33:04 04/02/05 (0)
• Re: Center of Gravity--Help! Hugh MacKay 03:01:31 04/02/05 (4)
  • Re: Center of Gravity--Help! Allan in NE 07:28:14 04/02/05 (0)
  • Re: Center of Gravity--Help! thurlow 04:56:22 04/02/05 (2)
    • Re: Center of Gravity--Help! steveormary 21:15:02 04/02/05 (1)
      • Re: Center of Gravity--Help! Ken Macfarlane 06:22:39 04/04/05 (0)

Post a Followup Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]