Mechanical Advantage vs. Straight Pull Stumpin'

[@DougSisco1]

Interesting video, but you didn’t show the other end of the pulley system. Also, what do you do if you are in an open field?

[@Matt-hn8rx]

i don't know how i ended up here.. but for an old guy you make good videos

[@tghoffmann]

Thanks, Ma. On TreeBuzz I post as "oldfart".

[@Stanwich2781]

Thanks Tom! Tomorrow i bring home my first tractor, 76 ford 4100. Your videos are so direct and to the point! Exactly what i need to be watching, Great work!

[@johnpuccetti9383]

Nice but it would be good to see what you attached to.

[@NSNorfolk]

Nicely done. I appreciate the detail of putting the sling over top of the rope set incase something broke/let go.

[@charlietaylor4277]

Thank you for an intelligent and entertaining video!

[@donna30044]

Thanks for showing a really good safety technique. So many videos make me cringe because they don't show proper safety techniques like this one does. Whiplash from a line under great tension can be dangerous -- even lethal.

[@TadRichard]

You didn't show what you attached the other block to, but I assume it was a very large tree. One thing newbies (unlike yourself) need to think about is that the pull on the "fixed" end is more than on the "moving" end. You don't want your "fixed" end to become your "moving" end because you attached to something less stable than the stump! :-) For that reason, it's a good idea to split the "fixed" tackle across two trees, each carrying about half the load. More equipment, but safer.

[@OakKnobFarm]

Also: If the fixed end is a tree (or trees) you want to keep, you have to be careful not to chew all the bark off with your slings

[@kahvac]

Excellent video.... It's nice to see a professional at work. Thanks for making and sharing !

[@emjayw3018]

Physics in action, shure as hell beats physical exertion, so often people overlook one of mans oldest creations, to gain an effective mechanical advantage, with the block and tackle, that and heating then shock cooling rock, bronze age Man had the ability to literally move mountains. Well thought out rig, great to see you sharing knowledge in a user friendly easy to watch vid. Cheers from Australia mate.

[@MrChipBryant]

Thank you for sharing your knowledge with us!

[@anthony9thompson]

Great video. I think it's always best to pull in reverse with these kind of jobs as there is no chance you will flip your tractor. If you ever see your front wheels come off the ground it's safer to 180 deg the tractor and pull in reverse. Cheers

[@fm1224]

no drama when pulling a stump is a good thing....I used to use a 1974 Ford LTD, 8cyl..family car, in low gear..would pull anything....lol all I had to do was NOT let my Dad see me do it...lololololol would pull the whole tree out at once, position the rope / chain bout 10 feet up, that was my mechanical advantage...would pull tree over and right out....the crazy crap you'd do growing up!

[@AndrewBrowner]

i find it amazing in the first pull that the engine would die before the tires would slip, was it in the lowest gear available? either thats some strong ground and amazing tires or they drastially undersize the powerplant in these tractors

[@pantloadd]

I love KZbin and have seen so many stupid people doing stupid things. It was so nice to see you being SAFE first, then SMART!!! Great video. Teach more!!!

[@rlachermeier]

Did I miss something? What did you hook the other end of the 5to1 up to? I’m assuming some kind of immovable object.

[@barrym4079]

Otherwise known as a snatch block. Oldest winching trick in the biz

[@semco72057]

I was worried about the chain coming loose from the stump and coming back at the tractor until you put down the fire hose over the rope to stop that. I was also surprised that the stump came out that easily too as I remember an incident in North Little Rock, Arkansas where the owner's son was operating a dozer at a construction site I was also working at and the cable connected to the dozer broke away from the debris the son was trying to pull away and the cable came back and hit the operator and took off one of his arms.

[@williambtm1]

Well done Mr Stump Removing Feller.

[@SeekerKnight]

Great idea and well designed. If you want to take it too the next step, configure it to be used as a force multiplier for a front end loader bucket. I bet it would save a lot of digging with a backhoe on larger stumps. Just a matter of scale.

[@RoyAndrews82]

So 5:1. It's basically like having 5 of those tractors pulling at the same time, in parallel.

[@loadedhot1034]

I think he could have got the same results using a wheel off of a truck. Just wedge it down between the stump and the ground then pull the stump over the wheel and the wheel will cause the stump to go up and out.

[@famtamradek5733]

I want to be like you when I grow up

[@lifeisgood070]

if you pulled up you wouldn't need as much force. Try to pull a weed out sideways vs straight up. Roots don't expect to be pulled up.

[@leonardleasa6404]

That is one good block and tackle where did you purchase that?

[@paulnicholls8683]

What size, grade of poly rope is that ? Being a pipefitter I've done lots of rigging, using snatch blocks etc. Amazing what can be moved wigh little effort. Now then, why don't you go out to where the guys go mudding with their trucks. You could show them a thing or two when they are stuck.

[@johnshoemaker5214]

if you simply pull from 90 degrees, the roots will break and twist out of the ground. even easier.

[@fyanezc]

Hi Tom, just found your channel. Thanks for sharing your videos, cool rigs you have set up. Quick question, what knot are you using to tie the end of the role of the Urig to your tractor? I'm imagining it gets horribly tight...thanks!

[@tghoffmann]

Great question ... Knots are awful. Check my vid "widow maker trip", about halfway through. It's a Portawrap" or "Porty".

[@Dyltek]

R.I.P. White oak stump

[@bogdancala6767]

Hi. I'm wondering if a thern 3500lbs pull capacity winch would be capable of doing the work instead of a tractor. Its a massive winch in my opinion but I'm not sure if its capable of the things you do. Thank you.

[@cfgenth]

Thanks for this well done video! I use it for teaching my 7th and 8th graders.

[@tghoffmann]

I'm pleased to hear it. You're in good company: I've been asked by two Fire Chiefs to use the vids to train new recruits on application of MA.

[@pooncote1713]

cfgenth

[@hd4ms]

Wonderful, MA is the way to go, I've been digging some stumps that size out with a mini excavator, beats the machine up. Wonder will that work on a 36" white pine stump? We might just find out.

[@timberray9572]

I always straight pull, however I tie a strap real high in the tree, preferably half way to three quarter of the way up, make sure you have a long enough strap so you don't pull the tree on top of you. This way you use the tree itself as a leaver and it works real well. After the tree is down half of the root ball will be sticking out of the ground, at which point I will cut the tree stump at 20ft to 30ft and use the tractor to again to push it side to side till the rest of the roots are out. Leverage vs mechanical advantage, that would be an interesting video.

[@solarfluxman8810]

I do it this way too. But I also put a large log in front of the base of the tree, that way when the tree falls, it's own weight will pop the root ball right out of the ground.

[@SondejJohn]

It appears your have poison ivy or oak at the base of the stump, I'm glad to see you were wearing protective clothing.

[@tghoffmann]

Good eyes, exactly right. Www.armchaps.com.

[@lanksterprice]

Really, Really cool.... I know some guys that would have spent all day getting the out.. wow

[@brcisna]

Tom, Have been watching several of your KZbin videos. Very helpful in regards to getting my head around various mechanical advantage setups for stump pulling ( and for other things that need to be dragged,etc). Have a 25 hp 4wd drive tractor slightly biggerr than yours here. Going to be pulling 4-8 inch stumps, elm . I have made a root ripper for my tractor to go four sides of each stump to shear as many roots as i can before attempting the stump pull. For pulling a stump with either a 4:1 or 5:1 MA would you think a double/twin sheave pulley setup ( as is being sold on ebay) with a 32KN rating be heavy enough? The units look similar to the Rock exotica 'Machined Rescue pulley' line. Thanks

[@tghoffmann]

+Barry Cisna Thanks, Barry. No, I don't think so. See my reply to the most recent comment under "uRIG Build Details". The eBay is LESS than the Rock Exotica. The RE is 36kN and the only reason it is OK for this comparison demo is that the stump was already loose from the tree falling over. You should be thinking at least 2.5 ton WORKING load (that's more like 90kN BREAKING strength).

[@mykolajLviv]

How much forces are on the carabiner?

[@cidpusa700]

Impressive educational

[@i8BBQ4Lunch]

I have a small tractor and you describe how to calculate the dead pull capacity. You said you "set a pulley system in a tree and used eight (8) 5-gal. cans of water to calibrate the dead pull capacity of my tractor...the tractor can make 700-1000 lbs." Am I correct in assuming that you are lifting all eight buckets with just a direction change pulley and that you added buckets until you could lift no more? If that is true then wouldn't the weight have been 333.816 pounds (8.3454 *5*8)?Thank you for your effort and video. Now I need to build the pulley system.

[@tghoffmann]

Great question! I hung the jerry cans from a 2:1 pulley system acting AGAINST the tractor. That doubles the weight and then I divided by .85 to guessimate friction loss through the pulleys. It would have be much easier to just pull against a peak capture dynamometer.

[@i8BBQ4Lunch]

Thanks for the reply. Just so happens I'm watching the "E/E Anchor Sling Proof Testing " video right now. I'm going to get some pulleys out and play with this a little. I don't do this a lot so it is a little hard to visualize.

[@1crazynordlander]

What's up with those hard starting NH tractors. I have a skid steer and a lawn mower with the same type of engines in them and they are horribly cold blooded. The second time in this video you cranked it, it started right up. Nice video!

[@gordbaker896]

Let the glow plug do its' job first.

[@1crazynordlander]

Gord Baker I do, but 90 degree weather and you have to use glow plugs???

[@gordbaker896]

Try the glowplug route and see if it helps.

[@1crazynordlander]

I have to! I do run the glow plugs every time I start it, even in 90 degree weather. Even the implement dealer has the same machine and he says it is a bugger to start. I wanted to find a snowblower for it and he said forget it. It wont start.

[@gordbaker896]

Well, first I would check the Ground terminal to the frame. This caused problems in a 4.75 75HP unit I had. Problem was under the ground lug at the frame. Little tractors are no doubt different. Fuel filters changed regularly? Injectors tested? Buy a Kubota? I always use the Glow Plugs on any diesel that has them.

[@themadcookieman]

Would you mind listing the parts I need to buy to set up that system. I know, it probably seems obvious to lots of folks, but, specifically what do I need. Instead of just saying "hooks and straps", would you be specific about what kind of hooks and straps and pullies etc...

[@tghoffmann]

Jeff, check out the playlist for the "uRIG" mechanical advantage system. The videos will give you a detailed parts list and show how to deploy the system in different rigging applications. The uRIG is useful and strong for a hand-drawn but it isn't for big stumps. The pulley at the head end is 36kN or about 4T mbs. At SF=4:1, that means the max pull to be applied to the working line should be about 400 pounds.

[@themadcookieman]

Thanks you.

[@anniegaddis5240]

Good info. Thanks. Sharing!

[@bendrew1831]

Is there a way to use this if you don't have a nearby tree or trees to anchor from? or at best 15" stumps nearby. I've had 50 pines cut down.

[@tghoffmann]

Speaking practically, you need the anchor tree or stump. There are ways to build serious earth anchors using multiple logs and lots of digging but it's huge work, enough to make me rethink a stump grinder or an excavator to dig it out, especially if you have many to do.If you do try to use a similar size stump, you should watch my vid "E/E Anchor Sling. It's a way to cut the forces on each stump in half.

[@bendrew1831]

Tom Hoffmann thanks mate

[@johnshoemaker5214]

15 year owner and top climber of a tree service. i would recommend a backhoe or a dozer which may be better then a grinder. get several bids before signing a contract. good job tom.

[@Psalms119nove]

Hi Tom. your videos are very interesting. when are putting out your next video? hope your doing good. -Sam

[@tghoffmann]

Thanks for the nice words, Sam. I'm just fine ... I've been moving from New Hampshire to Asheville, NC. I gotta get back to my videos, f'sure. You know, living in NH made me feel manly and rugged; living in Asheville makes me feel smart ... !

[@davidstrickland6428]

Even with a straight pull and no mechanical advantage.....things can snap, crackle, pop and hit the tractor and operator.

[@richardfancher7524]

Archimedes of Syracuse wins every time !

[@obfuscated3090]

Syracuse? He doesn't have a New York accent! 8-P

[@chickenfriedbobcat6090]

Until he ignores an order given by a Roman soldier

[@cujo-5022]

Never hook a strap/rope to a chain, if the strap breaks the slingshot effect of a chain coming at you could kill ya. Also laying that strap over won’t defuse /absorb loaded energy

[@workinonitSurge]

Very cool.

[@175IQLOSERS]

Everybody these days calls this "mechanical advantage set up"...Like its something new... Its not new... its a good old block and tackle set up... I have one in my barn capable of lifting/ pulling 80K lbs...

[@tghoffmann]

Wow. 40 tons. I'd like to see that ... you should do a video. Is it marked? MBS or SWL? If gear is not marked, what specifically do you measure to get a strength rating? What's your formula from that measurement to get to force? Thanks for the help.

[@jamesireland1638]

your located in NH

[@tghoffmann]

Yep, near Portsmouth.

[@jefferyschirm4103]

Why not back up close and use the 3 point to put weight on the tractor.

[@JoseAVega-vq7yt]

The problem with pulley systems is the tension in your anchor point, if am not wrong that rope is your weaker point, I think is a 14K pounds a snap in that rope is a killer. The tension at the pulleys are extreme, your main rope are 1 or 3/4 inch static. I have used come along and grade 70 chains, and go 10 feet to the tree and to the botoom of a tree, and another one in triangule, I have heard the breaking of the roots on your video and it really make feel fear that sound. Excellent video on pulley, but personaly for that size of three stump I stay with chains grade 70.

[@stefantwotimes]

smart

[@ChayomanHutzepua]

Am I the only one that thinks he should water it? is easier to pull it out of mud instead of dry dirt

[@UncleKennysPlace]

Depending on how far out in the field, you could do that. Or you could save the water and use a pulley setup-which you should have if you pull stumps-and in a few seconds, you're done. Besides, it may take 50 gallons to get the water down deep. (I pull honeysuckle after hard rains, but that's a two edged sword: the bushes come out more easily, but the tractor tires slip in the soft earth.)

[@gordbaker896]

Perhaps you were using Summer fuel or had filter blockage. Using Glow Plugs is the right way. Not sure how you were trickling gasoline into a Diesel. Not recommended.

[@pjneslo8979]

He rigged the stump the same way a gantry is rigged on a crawler crane ... !

[@xlandscaper]

Kneeling down in the poison ivy..

[@refzz1259]

I dont understand why you didnt just hook it up to the bucket and lift? They come out like butter that way. My old Ford 3500 would pop out stumps much larger than that without any trouble. Hydraulics are very powerful.

[@MrStickyIggy]

2 girls 1 stump...

[@jackwoods2891]

Or you could buy a bigger tractor say 85 HP then you don't need that set up.

[@johncoops6897]

Microphone volume... TOTAL FAIL. Surely it's not that hard to actually watch your own video after editing and make adjustments that allow people to actually hear what you are saying? Yes, haters... I can adjust my computer volume. However then when the adverts come, I get blown out of the room.