This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
The Forum Parts and Services Unofficial Allis Store Tractor Shows Serial Numbers History
Forum Home Forum Home > Other Topics > Pulling Forum
  New Posts New Posts
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


38s vs 34s
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
Bob C IL View Drop Down
Orange Level
Orange Level


Joined: 25 Sep 2009
Location: Paris IL
Points: 369 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bob C IL Quote  Post ReplyReply Direct Link To This Post Topic: 38s vs 34s
    Posted: 18 Jan 2016 at 7:27pm
Anyone off hand know the circumference difference between a 18.4x38 vs 18.4x34?
Back to Top
Sponsored Links


Back to Top
den/southern illinoi View Drop Down
Orange Level
Orange Level
Avatar

Joined: 11 Sep 2009
Location: Sparta, Illinoi
Points: 1988 		Post Options Post Options   Thanks (0) Thanks(0)   Quote den/southern illinoi Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 2016 at 8:39pm
Since I do not know the actual diameter of the two tires, I cannot figure the difference.  At the outside of the rim it is 12.56 inches difference.  You take the diameter times (multiply) by 3.14.  At least I think that is what my math teacher taught me.  Den

Own 4 wheel 20, 2-5015, 5020 and associated equipment and 2 electric forklifts.
Back to Top
Bob C IL View Drop Down
Orange Level
Orange Level


Joined: 25 Sep 2009
Location: Paris IL
Points: 369 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bob C IL Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 2016 at 8:55pm
I can do the 38s but no 34s available for scientific research!!
Back to Top
ILGLEANER View Drop Down
Orange Level Access
Orange Level Access


Joined: 13 Sep 2009
Location: Willow Hill,ILL
Points: 6448 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ILGLEANER Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 2016 at 9:53pm
Bob are you thinking 34s to change your gear ratio to the ground ?????
   IG
Education doesn't make you smart, it makes you educated.
Back to Top
patrickmull View Drop Down
Orange Level
Orange Level
Avatar

Joined: 11 Jan 2011
Location: Casey IL
Points: 893 		Post Options Post Options   Thanks (0) Thanks(0)   Quote patrickmull Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 2016 at 1:22am
setting side by side 18.4 x 34 on 20" wheels firestone f/r are the same height as my 15.5 x 38 f/r on 16" wheels 

Edited by patrickmull - 19 Jan 2016 at 1:25am
Back to Top
bradley6874 View Drop Down
Orange Level
Orange Level


Joined: 05 Sep 2010
Location: salisbury md
Points: 1344 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bradley6874 Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 2016 at 11:44am
What bradn tire if there fireston google firestone tire data ar callthe dealer they can tell ya I walked in and started asking quetions he got tired of looking stuff up and gave me an old catoulg and said take it find what you want just leave ealone   
You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul
Back to Top
O.P.S. Heads View Drop Down
Orange Level Access
Orange Level Access


Joined: 02 Jan 2013
Location: Iowa
Points: 574 		Post Options Post Options   Thanks (0) Thanks(0)   Quote O.P.S. Heads Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 2016 at 12:39pm
How about if you look at speed charts for the same tractor at the same RPM. One speed chart with 34's and the other with 38's. Figure the percentage difference of speed and use that.

Or use these:

http://commercial.firestone.com/content/dam/bcs-sites/firestone/PDF/RCI.pdf

http://www.petestirestore.com/184x34-Firestone-Super-All-Traction-II-Tractor-Tire-8-Ply-TL_p_7149.html
Back to Top
Bob C IL View Drop Down
Orange Level
Orange Level


Joined: 25 Sep 2009
Location: Paris IL
Points: 369 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bob C IL Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 2016 at 1:52pm
Thanks for the advice guys! all I needed was a measurement last night. My son and a buddy borrowed a calculator and think we have it figured out. My sons best idea was to buy a red or green tractor cause they have all the fancy store bought parts. Well that won't work with my situation because of a 8 to 5 job, wife, and rasing a granddaughter. And no farm ground to sell ( shouldna said that ). Oh well if all else fails it's one impressive lawn chair to drink beer out of. Later!
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.125 seconds.


Help Support the
Unofficial Allis Forum