Stock Class Pulling with '49 UTS

Chris Whitford · Aug 15, 2010

I've just about got my UTS running. New valves and seats, bearings, rings etc. Thanks Charlie!

Our club pull is in two weeks - so I have to get moving.

I have a few questions. This is a stock class only.

What weight class should my 1949 UTS be in?

Should I leave the fluid in the tires or find some wheel weights?

What was the stock tire size?

What tire pressure should I run?

Any other tips?

Thanks guys!! this is a great forum. Lots of good info here.

Chris.

Charlie Bilerx · Aug 15, 2010

Chris Whitford,
My UTS always did best in the 8000 pound class. A lot depends on the rules you have to live under. I had to pile every extra ounce on the front end to keep my tractor from pointing at the northern star. My front wheels were filled with fluid and I had four sets of front wheel weights on my tractor. Fluid in the back tires was something I could not do because of balance issues.

What is the maximum hitch height and minimum axle centerline to hitch Distance? The higher the hitch means the more you carry and the less you drag. Higher hitches also pull the front end up. The longer the hitch gets; the more the front end goes up too.

Tire pressure is another one of those funky things. Too much pressure will keep the center on the track and not allow the edges to pull. Too little pressure will force the center to pull up and also drop your hitch height when things get tough. I personally ran about six pounds of air pressure in my hard as a rock weather cracked tires. I just piled on all my weights, tools, and cooler and drove the forty minutes to my local pulls. By the time I got there, the tires were better than the ones the guys ground on for days.

Pay attention to your carb high speed setting and plug readings. Those two things will put you ahead of ninety percent of the competition.

Remember to have fun.
Charlie

MMZAck · Aug 16, 2010

Chris,

If you are pulling in stock classes I would stick to a 6000lb or 7000lb class with your tractor. Take all of the fluid out of the tires and get the tractor down in weight. You can add weight back where you need it later. Most stock UTS's will weigh around 5700-5800lbs depending on added options and that's without a driver. Stock tire size should be 16.9-30 or 13.6-38. Tire pressure will depend on track conditions, usually lower for soft tracks.

If you want to get up to speed quick, check out the link below to The Antique Tractor Pull Guide. It contains everything you'll need to know to work towards that full pull.

Zack
link_disallowed
The Antique Tractor Pull Guide

Chris Whitford · Sep 2, 2010

(quoted from post at 21:20:11 08/15/10) Chris Whitford,
My UTS always did best in the 8000 pound class. A lot depends on the rules you have to live under. I had to pile every extra ounce on the front end to keep my tractor from pointing at the northern star. My front wheels were filled with fluid and I had four sets of front wheel weights on my tractor. Fluid in the back tires was something I could not do because of balance issues.

What is the maximum hitch height and minimum axle centerline to hitch Distance? The higher the hitch means the more you carry and the less you drag. Higher hitches also pull the front end up. The longer the hitch gets; the more the front end goes up too.

Tire pressure is another one of those funky things. Too much pressure will keep the center on the track and not allow the edges to pull. Too little pressure will force the center to pull up and also drop your hitch height when things get tough. I personally ran about six pounds of air pressure in my hard as a rock weather cracked tires. I just piled on all my weights, tools, and cooler and drove the forty minutes to my local pulls. By the time I got there, the tires were better than the ones the guys ground on for days.

Pay attention to your carb high speed setting and plug readings. Those two things will put you ahead of ninety percent of the competition.

Remember to have fun.
Charlie

Charlie,

I pulled recently in a 5000lb stock class.

Hitch height is limited to 20", mine is a little lower then that.

I pulled in first gear, and spun out a lot earlier then most.

A UTS with 38" tires won the class. Smoking pretty hard but it pulled really well.

Am I wasting my time in this class with my 16.9-30" tires? I ran them pretty low, but they just didn't dig like the narrow tires.

Thanks for all the parts and all the help! Much appreciated.

Chris.

Stock Class Pulling with '49 UTS

Chris Whitford

Member

Charlie Bilerx

Member

MMZAck

Member

Chris Whitford

Member

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