Sears Lawn Tractor Will Not Stay Running. 12 Years Old.?

Rote has all good answers, but I can think of some more. You say that the engine "will not stay running". Are you saying that it used to run "pretty good", and then, one time when you tried to start it up, it seemed to try but it would not *keep running*? Or did it just not start up at all? Did the cranking seem to be 'natural' -- not like it was irregular -- which might indicate compression loss to the cylinder? And now, after you've done all the overhaul work that you described, the engine *still* is inoperable? Uh, . . . Are you sure that you remembered to re-open, FULLY, the cut-off valve at the bottom of the gas fuel tank?

1. Onboard charging system for hybrid electric tractor

If you want to charge a 24V battery from a 12V alternator, you will need a huge boost converter, which will be spectacularly expensive. It would be better to just buy an alternator designed for 24V systems, e.g. from a truck.Yes, a battery can act as a short-term power source, which means that you can get a bit more power in the short term than the alternator can supply. But you still need to pay attention to the thermal limits on the motor: 100A continuous or 300A for 30s (and probably off or very low load for a few minutes after a high-power burst, so that it can cool down again).For example (totally making up numbers here) if you calculate that your average load will be 60A, you could use an 80A alternator. It would supply the base load, and then when you want a 300A burst, you can pull that from the battery. While the electric motor is cooling after its burst (e.g. drawing only 20A), the alternator will charge the battery.With a motor of this design, voltage = speed and current = torque; normally you use a PWM speed controller which acts in conjunction with the motor's internal inductance to behave like a buck converter. If you run it from 24V not 48V then you can put in only 24*100 = 2400W continuous (electrical) power; it will run half as fast on 24V (about 2400RPM) as it does on 48V (about 4800RPM) while providing the same torque (a function of the 100A limit). If you want to get the full 4.8kW (electrical) / 4hp (mechanical) power, you need to run it at 48V and 4800RPM.Note that the motor is rated as 4.8kW electrical and 4hp (3kW) mechanical. That means its efficiency under full load is about 63%, which is terrible. If you want 3kW of mechanical power, you need to supply 4.8kW of electrical power.Because your choice of supply voltage affects motor speed, it will affect your choice of gearbox ratios

2. Is it possible to turbocharge a 1960's Ford 4000 tractor with an aftermarket turbo?

its unlikely that there would be an option for a turbo on an engine that old even on diesels they had not gained popularity like nowadays. i know nothing about ford tractors though. but you could surely turbo charge it if you really wanted to make all the parts. if its a diesel it should be fairly easy to set up but would be much work still. it mattes not really what brand of turbo you use but size and shape are critical. i suggest learning all about turbochargers if you want to do this project. there is much to consider.

3. wheee is the john deere tractor from green acres who has it?

They were farm kids way down in Dixie They met in high school in the sixties Everyone knew it was love from the start One July in the midnight hour He climed the water tower Stood on the rail and painted a 10ft heart In John Deere green On a hot summer night He wrote Billy Bob loves Charlene In letters 3ft high And the whole town siad that he should have used red But it looked good to Charlene In John Deere green They settled down on 80 acres Raising sweet corn,kids and tomato's They went together like a hand and a glove On a clear day from their front yard If you look and know what to llok for Off to the east you can still read his words of love In John Deere green On a hot summer night He wrote Billy Bob loves Charlene In letters 3ft high And the whole town siad that he should have used red But it looked good to Charlene In John Deere green Now more then once the town has dicoved Painting over it ai not no use There ai not no paint in the world that will cover it The heart keeps showing through In John Deere green On a hot summer night He wrote Billy Bob loves Charlene In letters 3ft high And the whole town siad that he should have used red But it looked good to Charlene In John Deere green Ahh,paint it green boy In John Deere green On a hot summer night He wrote Billy Bob loves Charlene In letters 3ft high And the whole town siad that he should have used red But it looked good to Charlene In John Deere green John Deere green

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