eemergency kill switch-tractor

glennster

Well-known Member
got to thinking about the tractor accident post earlier. thought about hooking up a lanyard type kill switch on my 240u for bushhogging. found this kind on the net, looks like its for a boat or jet ski. wonder how it would work on the tractor. figure if you got knocked off by a limb, this would kill the ignition. any thoughts? any better type switch out there?
poke here
 
Shutting off the ignition doesn't help a lot if the PTO keeps going. There used to be a big button you could put on the back that would kill the engine and also throw a brake on the PTO, if you could hook that up the same it would be better.
 
Inertia would keep the engine and brush cutter spinning long enough to run over you and kill you. There's LOTS of inertia in the spinning blade.

Try it sometime... while mowing, shut off the engine, and see how far the tractor moves before coasting to a stop.
 
I dont want to start trouble here, but how could any one fall out of a tractor seat? I have Ford tractors with the flat top fenders and I cant even begin to think of what I would have to do to fall off it. How fast would I have to go over rough ground? That guy pulling logs a few months ago on here dident even go over, or fall off. You can have all the safty equipment you want on a tractor, but there is no safty equipment that will help protect having no common sense or operator stupidity. 3 of my tractors have no rops, the one that does is good only for the canopy. Other than that I can barley get it in the barn because it is to high. People need to be more aware, its not the tractors fault if you use it incorrectley
 
jay , i was thinking more along the lines of getting a limb or something caught and knocking you off the tractor, as opposed to a high speed manuver. i'll have to try shutting the key off with the pto mower running and see how long it takes. seems like an over-running coupler would be a dis-advantage in this circumstance.
 
I thought the post a while back said a guy was mowing rough ground, and fell off the tractor and under the mower.
 
That's what over-running PTO couplers are for. The mower may keep spinning, but it won't be turning the PTO shaft and the tractor will stop as soon as the engine does. The mower will still be spinning, but it won't be moving forward to run over you.

Keith
 
As previously stated, time delay due to inertia would reduce the effectiveness.
There would be some instances were the number of incidents should be reduced.
 
Marine shops sell these switches.Lobster men use these switches to shut down engines if they get caught in winch lines or pulled in to the water by trap lines.On of the first thing I do in the spring is to check the branches on field edges.Being swept off by limbs and under mowers happens often.When my tractor shut down while baling hay it stopped fast.I drove the tractor over the edge of some road paving on an angle the forces that threw me from side to side were very strong.The new paving was about 3 inches thick.
 
Its plain that you have never used an old John Deere or Farm All tractor.Your position BEHIND the rear axle puts you in a bad spot if hit by an over hanging limb on field edges or on woods roads.Looking back at the mower at the wrong time can get you swept off by a tree limb.Tractors and horses are dangerous.My grand dad was killed by a horse. my neighbors grand dad was killed by a horse.Another friends grand dad was killed using a tractor.Things happen even when you are doing every thing right.
 
As previously discussed and proven ad nausium in aviation etc investigations.Incidents are also caused by "good operators".
Neither safety equipment alone or "common sense" alone will reduce the number of incidents.
An experienced operator with a clue who isn't tired or distracted. Using a machine with a rops/seat belt and intact pto sheilds will be the safest.
You haven't talked to an experienced common sense operator who has been crippled. Even "good" operators make mistakes that safety equipment can offer some protection from.
Look at the weight and money we could save by eliminating safety/protective equipment from commercial aircraft. We won't have incidents and need all that expensive time consuming stuff. Because the pilots are all experienced and have common sense.
 
A problem with kill switches is there's always a chance of tripping them when you don't want to. In some cases this can be hazardous, and it's pretty likely to happen on a tractor where you're doing a lot of things at once.

I had a kill switch on my boat back in my days as a yachtsman. I never hooked up the lanyard, but that didn't stop it from tripping one day when I was headed out New Topsail Inlet (NC). I had a few seconds of panic until I figured out why the motor quit. Fortunately I got it restarted before the waves swamped my boat.
 
I do use a Farmall H wide front end. My land is level so maybe thats why I have never had a problem with it. Im not saying things cant happen.
 
I was mowing a waterway with our CIH 4240 once and I don't know if I bounced or fell, but I hit the clutch as I was expecting something like that, and when I looked down I was looking at the tire where it hits the ground, directly under me. I'm glad I had a low tractor that day, and was lucky it backed out of it.
 
I work in the health field and you would be amazed at how many people in their 30s and early 40s have strokes , heart attacks or just plain old pass out from heat and dehydration. I think kill switch may infact be a good idea. Not tractor related but years ago I fell asleep at the wheel of my truck after a night of fishing with my best friend following me. I crossed 4 lanes of traffic before the rumble strips on the far side of the hi way woke me up. I didn't plan for it to happen it just did. The things that hurt you are the ones you least expect.
 
On my little pulling tractor I use a trailer break away switch I bought at a camper dealer. If I remember it was around $9.00 takes quite a bit to pull pin out.
 
From what I remember about the 240U that Pappy had back in the '70's, with the way the seat is made...as long as your seat has the original backrest, it'd be hard for much anything to knock you off that seat either to the sides or backwards, unless it could lift you into a near-standing position to begin with.

I don't think a kill switch would save your life anyway if using a brush hog...because there's no disengagement between the engine and the PTO to allow an over-running clutch to do its work. Instead, the mower would act like a giant flywheel and continue to drive the engine until the "flywheel"energy is dissipated.

An independent PTO might help, but only if the IPTO was set to disengage when the emergency switch killed the engine as well...and I'm not engineer enough to tell you how you could set that up, enen if the 240U had come with IPTO [which it didn't].
 
I guess if you really wanted to be safe about it then you would want an electromagnetic clutch like a combine uses to operate the PTO then it could be released the same time as the tractor died. But not a cheap way unless you have one out in your treasure trove.
 
You fall out of the seat when it flips. As in improper chain pulling procedure. Or in a hole, or on a hill. Or frozen to the ground. Or heaven help you if you are standing up on tractor, which is not that rare. Dave
 
Shut off the ignition on a tractor while moving in gear.It will stop moving faster than you think.An overrunnig clutch is there keep the mower blade momentum from pushing the tractor.My baler has a built in orc just for that reason.
 
Not so. A fellow was driving fast coming out of a wood lot.He had a chain looped on the draw bar.He also had a boy sitting on the hood.The chain hooked a stump.The boy was thrown clear, the driver was found under the steering wheel.85% of tractor upsets are to the side.
 

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