Re: Farmall-M Tricycle Stability ...revisited

Posted by Hugh MacKay on October 30, 2002 at 20:33:15 from (64.228.11.57):

In Reply to: Farmall-M Tricycle Stability ...revisited posted by George Willer on October 29, 2002 at 19:13:59:

George: It is obvious to me you have some detailed training in engineering. In the era when most narrow front tractors were sold corn was planted in 36" rows. The first explanation is, it was the width on the horse's backside for cultivating. Second it was to keep narrow front tractors set at 72" rear centres. For the most part this was on the plains of the Mid West. As far as tractor manufacturers were concerned that was the market. On those plains 72" centre wide or narrow was relatively safe.

On those same plains today they are planting corn in 30" rows and running 100+ hp 4x4 tractors with duals on rears and some on front. This fall dry and ground quite firm, you see these guys going with the duals off. tires front and rear somewhere in the order of 64" centres. Lets look at the senario of one of these tractors pulling three big grain wagons loaded off field. It has rained a bit and he is in 4 wheel drive, pulling just about to tractors limit. Just as he reaches the hard road, starts to make his 90 degree turn, one of the grain wagons drops in a hole, thus intensifying the drawbar pull. Because that tractor is in 4 wheel drive, (front wheels pulling) I contend tractor will flip so fast driver wont know what hit him. Sure he is in a rops cab, but the flip will be just like a wiplash. He will crash both sides of his head on cab. Once when she flips and the other when she hits the ground.

Why would they not leave the duals on. Give us a calculation on that one. Your net cost of tires on hard roads will be less with duals on. The first year I ran my 1066 on singles and it wore out rear tires in 1,000 hours. I dualed tractor and with 4 new tires went 9,000 hours.

A few years back this type of upset with forestry skidders on 7 and 8 foot tire centres, caused a lot of head injuries. I have never seen this happen but am told by people who have witnessed this, it is just like being slam dunked. Today these machines are on 10 and 12 foot centres. I realize the load on forestry skidder has a lot higher centre of graviety. It is however the front wheels pulling having a lot of the impact on the upset.

I contend these big tractors, some of them weighing 3 to 4 times the weight of a Farmall M, are far more dangerous on 64 inch tire centres, front and rear than any narrow front Farmall. I remember having the duals off my 1066 couple of times, scary thing to drive, even around the yard.

Follow Ups:

Post A Followup Name: E-Mail: Subject: Re: Re: Farmall-M Tricycle Stability ...revisited 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 ]