Pulling Forum - anybody pull a wd45 with 16.9 tires?

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anybody pull a wd45 with 16.9 tires?

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=200933
Printed Date: 21 May 2024 at 5:15pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: anybody pull a wd45 with 16.9 tires?

Posted By: JamesP
Subject: anybody pull a wd45 with 16.9 tires?
Date Posted: 17 Apr 2024 at 4:09pm

I was wondering if a wd45 making 49 hp. has enough power to spin out 16.9-28s

at 4000-5000 classes? How tall are 16.9s? My worn 14.9 measure 52.

Another question is, I didnt think 28 tires could compete with 15.5-38s.

But, I just some video of one beating 4 other tractors with 38s including 2

built WDs. Actually, I have seen that several times watching a lot of pulling

footage. Did they just get lucky? LOL

Replies:

Posted By: PaulB
Date Posted: 17 Apr 2024 at 6:51pm

Tractor pulling has many variables, however if you have the power you can spin big tires. I'm guessing that you're talking "Grampa gear" pulling not "get er done" pulling. With that being said, a stock WD45 with 16.9X28 tires may not quite be enough traction although you won't have what's needed for 38s. Most Allis pullers that run 38s have changed the gearing to be able to spin the big tall tires.

For an example, I used to own a WD45 Diesel. It had 16.0X28 tires with good tread. In a 5000 pound class it could never place and the engine never got under load. If 2nd gear was used it would stall out quickly. However in a 6000 pound class in 1st gear it would do well.

If you plan on going out to pull seriously, you need to be open to trying many sets of tires that match the HP you have in the gear you want to use. One size doesn't fit all. You'll do much better with a short pair of tire that matches your power than a tall set that you can spin.

I know that there are many that won't agree with me, however I have over 50 years of winning experience in all classes of tractor pulling from bone stock farm tractor pulling to multi engine modified tractors and everything in between

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If it was fun to pull in LOW gear, I could have a John Deere.
If you can't make it GO... make it SHINY

Posted By: DrAllis
Date Posted: 17 Apr 2024 at 9:40pm

There are soooo many variables to this. Track soil types, the sled itself, sled chain length, your drawbar height and length, etc, etc. With what you have, there is almost zero chance of ever pulling in second gear, unless your tires are bald or you're pulling on a city street or on gravel. Sooo, where I come from, a good WD45 will wheel uncut 13.6 x 38 inch tires in LOW gear generally all the time with a stock height(16 inches) and stock length (14 inches beyond PTO shaft) drawbar in stock 4000 to 5000 pound classes.. When you raise the drawbar to 20 inches and shorten it up to 18 inches from the center of the rear wheel AND have cut tires, things change dramatically.

Posted By: CAL(KS)
Date Posted: 18 Apr 2024 at 7:13am

check your local rules. If they follow NATPA rules, 5000 is lowest weight you can run 16.9x34 because of footprint. I realize you said x 28 but just saying. i would say a majority run taller narrow tire over short fat tire but always variables

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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15