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Farmall & IHC Tractors Discussion Forum
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Tractor Rollover Safety - WF vs NF

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jmauss

02-11-2006 06:55:10




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I've just been thinking a lot about tractor safety and rollover potential. I have a 350 Utility which, of course, has a wide front. It seems very stable, but I don't really know at what point it would roll, and I never want to find out. There is an old logging road in my woods that is grown over and has probably not been used in 30 years. I'd like to clear that road so I can get to the bottom to mow. The only way right now to get to the bottom is through the neighbors property. That works okay as he is a great neighbor (no legal access easement, just good neighbor), but I would like my own access. The road on my property is somewhat steep in spots, and I don't want to take any unnecessary chances, so I have been trying to decide if it is worth the bother to clear it. The access through the neighbor's property is more gradual.

So my question is how concerned should I be about the potential of a 350 utility to roll over? I know the answer is that any tractor can roll over, and I have no intention of going beyond my comfort level, but I'm sure that most people in a rollover did not intend to go beyond their comfort level.

How much better is a WF than a NF tractor from a rollover/safety perspective? I wonder if there are any statistics about the percentage of tractors that rolled, how many were NF vs WF. It seems there is a false sense of security, at least in my mind, that a WF is that much safer than a NF, but I don't know.

Safety first. I would just like to get some other perspectives. Thanks.

Joe

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JakeF

02-12-2006 19:11:56




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
You should be scared long before you can tip a 350U. Your biggest concearn is going across a side hill that is safe and dropping a downhill tire in a hole.



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burnetma

02-12-2006 19:08:42




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
You did not mention if your unit has the TA and live pto or is the plain jane 350U with the standard pto. If it is the standard pto, an over-run clutch is required or your brush cutter could push you into trouble.

My experience with a 350U is that the stability is very good (possibly better than my JD5420), but the brakes were marginal on a steep grade. I was actually forced to use the front end loader to stop more than a few times.

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jmauss

02-12-2006 20:15:15




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 Re: Tractor Rollover Safety - WF vs NF in reply to burnetma, 02-12-2006 19:08:42  
My tractor does have a live PTO and TA, so I am okay for not needing an overriding clutch.

As far as the brakes, I know what you mean. I took the tractor down the hill a way, and it took some distance to get it stopped. No danger, but that is what I wanted to test, and gave myself plenty of room. It got me thinking about putting new brakes in it, but are you saying the brakes in a 350 utility are nothing to be proud of, even when new? It is a new tractor to me, and the brakes are what they were when I bought it, so I have no idea if new brakes would be an improvement or not.

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Dave NE IA

02-12-2006 09:34:35




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
Extend your rear wheels out as far as they can go and buy a wide bush hog would be another opotion. Not a no fail option however. Dave NE IA



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Hugh MacKay

02-12-2006 07:24:54




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
jmauss: Your question on tractor stability is a matter of lowering center of graviety. Many narrow front tractors are indeed much safer than wide front and the difference is in lower center of graviety.

Three factors will lower that center of graviety, namely; liquid balast in the tires is the best as it will add weight very close to the ground, wheel and frame solid weights help but weight is not as close to the ground as liquid weight and last but not least is wheel tread setting, a tractor on 84" tread setting is much more stable than the same tractor on 60" tread setting.

These three factors will make much greater difference than wide versus narrow front end. When farming I had 2 Farmalls equiped with duals and no added weight. These tractors were close to 11' wide outside on rear wheels. Many times I have seen them slide sideways on side hills with no fear of upsetting. Now I realize from your description, you probably don't want the 350 - 11' wide, just wanted to show what effect this has. You get that 350 Utility out around 72" centers on rear wheels, it will act much like a mountain goat. If you normally like it around 60" wheel tread, get a set of snapon duals for use on side hills.

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jmauss

02-12-2006 20:18:25




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 Re: Tractor Rollover Safety - WF vs NF in reply to Hugh MacKay, 02-12-2006 07:24:54  
So Hugh, it sounds like on of the best things I could do to improve stability is to fill the rear tires. They currently have only air in them. Is that a DIY job, or do I have to have a tire shop do that? As far as they spacing, they are already 6' apart, so not much I could do there.

Thanks for the advice.

Joe



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Hugh MacKay

02-14-2006 03:26:56




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-12-2006 20:18:25  
j mauss: Filling tires with liquid is not a nice job, even if you have proper equipment for the job. You can gear up a graviety feed with the liquid 5 or 6 ft above tractor. then all you need is hose to the valve stem, with a bleeder at the stem for letting off air as these do tend to air lock a bit. You start with tire full of air, on the tractor and valve stem at top. Each tire will probably take better part of a day. You don't need to watch it but will ocasionally find it stopped and have to bleed off air.

Tire shops have pumps and they can do a tire in about 1/2 hour. These pumps don't have a long life, thus one has to be doing a lot tires to justify these.

If I were you and didn't need the weight for traction, if not doing a lot of heavy pulling, I'd go with the dual wheel idea. You could put these duals on for going down your slope. Look for a set of snap on duals that can be removed or installed in 5 min. Even a set of steel band wheels slightly smaller than your rubber tires, fabricate a systen to clamp these outside your tires. They work fine if you don't need added traction. E mail me if you have questions.

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Dave NE IA

02-11-2006 14:29:31




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
Janicholson hits it pretty good, as others do also. However the WF is a very false sence of security. I tell many to take a 16th scale toy tractor WF and tip it on your kitchen table to the extent that the pivot actualy makes a positive contact point. Now that your eyes are fully opened put that toy tractor on a side hill---way to late by the time it makes contact to kiss your behind good buy. You must do the math--ambulance--wrecker--dozer because wrecker can't get to the roll over site, new suit for your own funeral, casket-much less selling price for the widow when selling the busted up tractor. I checked my biggest concern--my little black book--apparently you don't owe me any money.(just kidding) Never the less we would just plain miss you here. Those total costs alone will pay the dozer. If you are lucky enough to survive your nurse probaly will shake the cement hospital floor when walking the hallway, not to mention her attitude. Dave NE IA

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Dellbertt

02-11-2006 10:33:01




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
Ive been brushchopping banks and ditches with my 300u with a trailer type chopper for a long time and not felt unsafe.
But I do believe trailer type brushchoppers leave the tractor to be more stable than 3pt choppers by a long shot.



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jmauss

02-11-2006 11:19:14




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 Re: Tractor Rollover Safety - WF vs NF in reply to Dellbertt, 02-11-2006 10:33:01  
So rather than looking for a 3pt bush hog, should I be looking for a PTO driven mower that I pull with the drawbar?



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Dellbertt

02-12-2006 09:42:06




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 11:19:14  
In my opinion, yes.



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old

02-11-2006 08:47:18




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
Drop me an e-mail and I'll send you a picture or 2 of just how small a hill will cause a tractor to start to roll over. I have some of an 8N ford that a guy was brush hoging on a hill and got lucky. A tree stopped the tractor before it could roll over or he would porbably be died, he did mess up his kneee but that is better then being died



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Janicholson

02-11-2006 08:20:09




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
In my wild youth, on a 350ute, I routinely drove full throttle 18mph around both blacktop and gravel country road corners. The tractor had nice stability and on gravel, and drifted without being loose or pushing (NASCAR terminology) on the marbles. (not recommended today by me)

Realistically the lower center of gravity has a major contribution to stability. The WFE only begins to help (dramatically) when the axle hits the front casting. Till then there is only a pivot in the middle of the front axle.

As to your question, make a 15 degree triangle about 3' long out of cardboard. using a level, walk the proposed road. if the slope to the side is greater than 15 deg. I would do some dozer work first.

Down hills and up hills are less problems (maybe 20 deg.) pulling hard up hill can also be dramatic if the power needs to be in the 3ta or slower range full throttle. Wheelies (and flip over backwards) are possible.

Remember to go down hill in direct drive (TA forward) to save the Ta from overspeed, and your life from crashes.

JimN

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Allan in NE

02-11-2006 07:58:41




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
I dunno. So far, so good from this end. :>)

Allan

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Brian G. NY

02-11-2006 13:53:57




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 Re: Tractor Rollover Safety - WF vs NF in reply to Allan in NE, 02-11-2006 07:58:41  
Now Allan, The weight ratio of the brush hog to tractor in your case is a wee bit different than it would be in the case of a 350U. In that case it would be more like the "tail wagging the dog". LOL



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billde

02-11-2006 07:52:53




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
There is a considerable difference in stability between a narrow front row crop and a wide front utility. Utilities have a lower center of gravity. If you plan on bounding off through the woods I would strongly suggest having a ROPS of some sort put on your tractor. Chances are if it is a logging road you'll be ok, they don't like sidehills either.



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Haas

02-11-2006 07:50:47




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
If you are not comfortable working on the old road with your tractor, then don't do it. If you can find someone in your area doing dozer or track loader work, hire them. Probably would not take more than a few hours to clear your road. When I was a youth on the farm, we had two narrow front tractors and a Super A which is offset, but wide front. The only one that ever turned over was the Super A. My dad turned that thing over twice that I know of, but fortunately was not seriously injured either time. I would say in general though that narrow front tractors are not as stable as a wide front.

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farmallhal

02-11-2006 07:33:22




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
I recall several posts on this issue a few months back. Someone quoted some numbers that most rollovers occurred with WF tractors. That is misleading in that most all tractors sold today are WF's. I also believe a NF will actually roll over quicker everything being equal but most NF operators know that and stay away from terrain where a roll over could occur. I believe their is also a false sense of security thinking that a WF is so stable it can't roll over by some operators. There's been some photos posted here on the forum showing roll-overs and several were WF's with front end loaders. Need to keep those things close to the ground when loaded and moving. This is just a case of being careful and knowing your tractor. My 2 cents worth. Just be safe and take no chances. Hal

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Turk

02-11-2006 07:18:32




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 Re: Tractor Rollover Safety - WF vs NF in reply to jmauss, 02-11-2006 06:55:10  
On paper, the NF will go over first, but not by much. It usually boils down to the operator. Bill



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