Stepped off, and it almost tipped over (lifting a snowmobile) !

   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #1  

Sodo

Elite Member
Joined
Apr 21, 2012
Messages
3,311
Location
Cascade Mtns of WA state
Tractor
Kubota B-series & Mini Excavator
Kubota B2710 lifting a 475 lb snowmobile on the brushfork.

378575d1402291486-stepped-off-almost-tipped-over-b2710_skidoo800r_16-jpg


I started to step off (to take a pic) and my weight leaving the tractor started it to tip. I leaned out to try to stop it but it kept going, until it came up against the stops on the front axle WHEW!. Was just about to throw the FEL down, which would have dropped the snowmobile.

I sat there for a moment realizing it was stable, and then carefully stepped off completely because now I HAD to take a pic. I pushed on it a little to confirm it was stable, and it was, so I quickly took a pic and climbed back on, and lowered the loader very very slowly, and the rear wheel came down.

I need to build a 3-pt ballast ASAP, thinking about just casting it in concrete. Does anybody have suggestions how heavy it needs to be?
 

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   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #2  
The BX2360 loader manual says somewhere around 450 pounds maximum rear ballast. I would suspect yours needs between 500 and 600 pounds.

Bruce
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #3  
just look at the physics here! Counterweight is a must if doing anything serious with your FEL.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #4  
Not trying to be the safety police but your one lucky son of a gun.Are your rear tires loaded?If not DO IT.How about getting a REAR BALLAST BOX?I would have NEVER got off that tractor for a pic.I would have sat my arse down and got that snowmobile on the ground ASAP.
 
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   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #5  
Why is the loader so high. Carry your load low and get some counterweight. Good way to twist the loader arms and tractor frame.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #6  
Maybe you should have had the hoe on, and the stabilizers down for
this type of work. I'm sure this has happened to many owners.
It is scary when it does happen, thanks for the photo.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #7  
Use rear ballast.
Your front axle will thank you.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #8  
I have a feeling the truck has something to do with it. I don't think I have ever had the wheels off the ground but it sure felt like it and the pucker factor was high....I can only imagine.

I think you have the lesson learned.....I learn almost every day on mine....sometimes it costs money, sometimes a little work, most time just a few more hart beats.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #9  
Kubota B2710 lifting a 475 lb snowmobile on the brushfork.

378575d1402291486-stepped-off-almost-tipped-over-b2710_skidoo800r_16-jpg


I started to step off (to take a pic) and my weight leaving the tractor started it to tip. I leaned out to try to stop it but it kept going, until it came up against the stops on the front axle WHEW!. Was just about to throw the FEL down, which would have dropped the snowmobile.

I sat there for a moment realizing it was stable, and then carefully stepped off completely because now I HAD to take a pic. I pushed on it a little to confirm it was stable, and it was, so I quickly took a pic and climbed back on, and lowered the loader very very slowly, and the rear wheel came down.

I need to build a 3-pt ballast ASAP, thinking about just casting it in concrete. Does anybody have suggestions how heavy it needs to be?

I sure hope the naysayers view this. As all can see from the photo, it is a long way from tipping over when the front axle hits the stops.

I have been trying to tell folks that the front axle does help in tipping situations but all I get is, "IT swivels and by the time it hits, it is too far gone" Well this photo proves that it isn't too far and the front axle definitely does help prevent a roll over. Putting ballast in the front tires would certainly help also.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #10  
Thank you for getting off to snap the pic!
There are lots of threads about ballast boxes, weights, loading tires, etc. But not many pics like this.
Jim
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) !
  • Thread Starter
#11  
I was testing to see how high it could lift the snowmobile, because I was building a summer storage shelf for it. Then I got the idea to take a pic for TBN, and moved the tractor out where lighting was better. That's where the judgement went wrong, it's your fault (you dragoneggs!:mad: always wants 'action').

"IT swivels and by the time it hits, it is too far gone" Well this photo proves that it isn't too far and the front axle definitely does help prevent a roll over.

Gary, I think I see what you mean, it's telling you that you're on the edge. Whereas if you had no indicator (the tipping - then a 'stop') its just going to continue, and actually tip over. I have had it tip up like this many many times (against the axle stop), just never before with a load so high. I'm glad the snowmobile didn't shift during this 'test'.

I think you mean "rear" wheel ballast? I filled the tires on a BX24 that I had because I found myself attaching the Backhoe for counterweight. Filled tires were very convenient, not having to 'attach' a weight and a counterweight hanging out there risks back into stuff. Plus being flat free. Quote for the B2710 rear wheels (12.4x16) is $494 each, or $988 + tx =$1070. Convenience is worthwhile but $1070 is not convenient….. (291lbs per wheel = 582 lbs.)

What conditions are there where permanent weight is a hindrance?
 
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   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #12  
I'm actually amazed you got that load that high before it started getting dicey!!

I have come to learn that rear tire ballast is simply there to counteract the FEL. With any heavy loads in the FEL, additional rear ballast is a must to counteract the load itself.

On my B2920, my 50" Howse box blade was enough ballast in most all cases, to cover the range of loads the FEL could handle. However, on my L3200, the bigger 60" box blade (also Howse) just isn't heavy enough. I can feel the rear tires getting light well before the FEL hydraulics stop lifting. So I'll have to rig something up. Might just build a tray on top of the box blade to take some additional weights, since I often am using the box blade on the same projects where I'll be lifting heavy loads in front. For the time being I have been putting heavy oak firewood rounds on top of the box, but they are not the easiest objects to move around.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) !
  • Thread Starter
#13  
It seemed OK then 'got dicey' when I moved (traveled) with the load up high (for a better pic'). When the load is at hood height, it's actually farther forward - as the FEL gets higher, the load comes back, (towards the rear wheels) putting more weight on the rear. So if you can imagine, being in that position, THEN having to lower it (where the weight advances forward) was scary. I should have stayed off the tractor (while it was stable) and piled weight on the back, before climbing back on. I can think of many ways to do this (now). I could have curled the bucket back (to bring the load back) too but was afraid of the load shifting.

Live and learn.

Here's another pic with a counterweight of ~450 lbs. I chainsawed a couple holes for the 3-pt arms to poke into. I often back into stuff with it there, it reduces mobility for sure.

378598d1402323962-stepped-off-almost-tipped-over-b2710-lifting-log16-jpg
 

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   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #14  
not trying to be a jerk but I will be blunt. Two things, first I don't know what you were unloading it from, but still why would you have the snowmobile that high for any amount of time. Second in you description it says you own a mini excavator. Why didn't you use that?
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #15  
Many posters on other threads making comments relative to FEL tractor stability issues seem to not realize the front axel is not doing anything to keep the load upright until you hit the stops. Said another way they seem to not realize the weight on the rear tire patch is the only determinate in keeping the load upright. Any load on the FEL subtracts from that weight and the front axel just provides a near zero resistance pivot for the load to go over until she hits the stops and then it just may be too late.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #16  
not trying to be a jerk but I will be blunt. Two things, first I don't know what you were unloading it from, but still why would you have the snowmobile that high for any amount of time. Second in you description it says you own a mini excavator. Why didn't you use that?
He answered that question in a post #11 if you bothered to read them all. He was going to build a storage structure for the snowmobile and wanted to see how high he could lift it so he could build it high but not to high. His error was in not having any counterweight on the tractor, also travelling with the FEL too high both instances could have been a disaster but his luck held. With proper rear ballast, he should have no trouble lifting the snowmobile to full height safely. I would just note that it is safest and best practice to keep the load low to the ground till reaching the destination and then raise to full height and creep forward. When removing the snowmobile and having to back up with it on, be very slow about backing up as it will tend to tip you over faster especially if you are backing up even a slight slope. Put plenty of counter weight on, as much as your OEM will allow. I like to keep my backhoe on for the best counter weight. If more is needed, I can scoop up a full bucket and extend the hoe full back or even to the high side when travelling on a slope for greatest counterweight effect.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #17  
It certainly was at it's limit, even if it hit the stop's,
a heavy wind, a quicker lift on the snowmobile, and throw in a 'little' slope, not much,
and i think it would have went over.
Definitely not something you want to rely on (the stop's).
As you could see in this instance,
just the drivers weight kept it level, in this case and scenario, very fortunate.
Again, thanks for the pic, it is an eye opener for some.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #18  
I viewed it and all I have to say is "Nay".
You were either very lucky, very skilled or both.
Yes, hitting the hard stop moves the tractor's roll center outboard keeps the tractor from rolling about the pivot any more that it already has.
It doesn't change the high CG or the resulting basic instability of the arrangement and the risk that the whole tractor will rotate about it's new roll center.
A little softer soil, a slightly different slope to the ground or a gopher hole and it would have gone over.
Not to mention that you have most of that weight concentrated on your front left wheel - that's not a great recipe for long axle life.
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #19  
Glad you made it out safe and sound....and thank you for taking the pic.:thumbsup: On a scale of 1-10 what was the pucker factor at???:laughing:
 
   / Stepped off, and it almost tipped over (lifting a snowmobile) ! #20  
Glad you made it out safe and sound....and thank you for taking the pic.:thumbsup: On a scale of 1-10 what was the pucker factor at???:laughing:

Clearly the pucker factor was not high enough to cause him to lower the sled to the ground and remove himself, his tractor and his sled from impending danger. The Darwin Principle missed out on a statistic here. Taking time for a pic in these circumstances is just plain dumb.
 

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