mini tracked wheelbarrow or dumper In the USA?

   / mini tracked wheelbarrow or dumper In the USA? #21  
*rubs chin* i say go for mini ex.

on a different note, why not get a "generator" yep a generator, some tracks, and use electrical motors? 2 motors (one for left and right side tract) and then 1 more electrical motor on mower. and just mount generator on the tracks? with some variable speed motors, and some relays, to get to the remote. for wireless remote control. *shrugs* and, if you run out of juice on your wheel chair while out and about. plug the chair in.

wheel chair motors, i remember hearing being used a lot in the "robot wars" tv doing.

===================
i do not think mini ex is going to tear up yard any more than tracks from a tracked dumpster or tracked concrete buggy will tear up. it all comes down to how good you are at the controls.

also cutting the grass so it is a little bit higher, instead of scalping yard 1" long, keep it cut at around 3 to 5 inches tall. the thicker grass helps hide, the tear ups. *looks innocent* that and if you damage grass, it is not permanent. grass does grow back, 1 week to a couple months. all depends on how badly ya tore things up. and as long as you do not make ruts. everything will be fine, those ruts on other hand, are the ugly killer. a wider and longer track, will help prevent ruts. but at same time, make it a little more difficult in how fast you can turn. without causing a track to "slide" across the grass. as the other track moves.

mini ex and major tear up of grass = constant going back and forth, between say back yard to a dumpster at the street, and putting ruts in the yard. or picking up something heavy in the bucket and putting more weight on to the machine, and trying to drive machine across the yard with what ever is in the bucket / picked up by the backhoe.

removal of backhoe, and extra stuff should help reduce over all weight of a mini ex. (getting stripped down to bare essentials) would also help reduce over all machine weight, not to mention no one physically riding in / on the mini ex.


=================================

(see attached image)

on current machine, add 2 gauge wheels, you might find on regular finishing mower decks. to adjust height at what the deck cuts at, but use them as "wheelly bar" wheels. to help keep machine down. you might be able to pickup some "caster wheels" from local hardware store for cheap, but would most likely not last to long. without seizing up and bearings going out. hence gauge wheels from a finishing mower deck, that has stronger heavier duty bearings, in idea it would turn your little machine into kinda like a zero turn mower. but without the finishing mower mounted directly to the machine.

ay as goose neck hitch. should help lower things. and still allow the 360 degree spin on the machine.

================
if you made your machine into a wider and longer unit, kinda like a zero turn mower. and placed a gas engine on it, with an alternator, to help keep a small battery charged.... you might be able to run a regular hydraulic pump right off the gas engine, and then use some valves, to control the 2 drive wheels errr 2 drive tracks. and then hydraulic hoses over to mower hyd motor. this might actually create a low profile machine ((does not stand up high)) it will just be long and wide in a sense. with a goose neck like hookup. for pulling things.

if ya go to zero turn setup, who says you actually need tracts? perhaps for better traction. being machine would be so light weight, but *shrugs*
 

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   / mini tracked wheelbarrow or dumper In the USA? #22  
if you can not tell, i am bored.

goose neck for machine idea.... see attach diagram. more specifically bottom diagram.

gooseneck.png

high grade bolt or pin, as in, drop pin or bolts used to connect a grain waggin or hay rack to back of a tractor. higher grade bolt or pin, should have enough strength to keep from bending and then binding up the goose neck form spinning. larger diameter pin or bolt may be wanted as well. to help reduce chance of it bending. granted that means more cash, but *shrugs*
 
   / mini tracked wheelbarrow or dumper In the USA? #24  
Thanks for the pictures
 
   / mini tracked wheelbarrow or dumper In the USA? #25  
Not knowing the extent of your injuries, I would have to think there is a way to make a seat a good suspension ride a lot cheaper than automating a mower . dumper. I see Blade Runner and his carbon fiber legs and I think, man, there has to be a way to put together a seat for you that would get you out of your chair on a machine. Just pushing you... thats all...
 
   / mini tracked wheelbarrow or dumper In the USA?
  • Thread Starter
#26  
Thank you all for your help! Guess what guys! I was able to get a mini tracked wheelbarrow for cheap. It's the Honda powered carrier hp400. It doesn't run which is fine to me is a don't plan on using the vertical motor on it anyway. I want to make a low-profile machine like my other one and use ideas that boggen mentioned. I do want to make it hydrostatic so i am going to pick your brains on figuring out electronic control valves to control the motors. I have several motors and pumps from different mowers I have. I just have to figure out ratios in order to make it travel at a maximum of about 6 to 7 mph. I would like to travel that fast for when I'm transporting it to a different area down my road a little bit. So, is there an easy way we can figure out how I can use a radio controller with a hydraulic system Or can someone direct me as to what to use and websites where I can look them up? it would have to be a proportional control valve for my veritable speeds. But I'm not exactly sure how it would work with the two motors controlling separate tracks yet keeping the flow constant and equal to both tracks.

So some things I would like it to do and have:
1. 6-7 mph
2. Category 1 three-point hitch Up front (for flail mower and other implements)
3. maybe a hitch for rear as well
4. I would like to be low-profile but a higher clearance than my track robot

I know this is going to be a lot of work but my dad said he's willing to do it. I know it's not going to be done overnight but I will try to post pictures of the progress.

Woodlandfarms, I really wish there was a way that I could handle being on a machine. But I really have a lot of pain when constantly moving around on rough terrain. The ride would have to be Super smooth. I don't think any air ride or shocks could give me as smooth a ride as I need. Believe me I would love it but I just don't think I could handle it.

Thanks all and sorry it took me so long to get back to this post. I didn't get an e-mail telling me there were posts.
Honda power carrier 1.jpghonda power carrier 2.jpg
 
   / mini tracked wheelbarrow or dumper In the USA? #27  
was more along the lines of thinking of ""open center"" 3 staked spool valve. you can find them on many tractors either for rear hyd remotes, to FEL, to backhoes to other ranging in multi configurates of how many valves are bolted together.

https://www.surpluscenter.com/item.asp?item=9SV-3-X&catname=hydraulic
p9SV-3C.jpg

going a tad further taking the 3 levers off, and then install 3 actuators. the DC actuators, would allow you to tie into wireless remote. and just tap the levers to adjust how fast a left or right track moves or how fast the motor on implement turns.
Actuator archive -- Tools and Equipment Review
actuator-1.jpg

in below diagram, the open center 3 stacked spool valve with actuators. would allow everything to be adjusted to a given amount of hyd fluid. example. many times, i operate backhoe, and lower the boom, curl in the dipstick, and curl the bucket all at the same time. but for you, instead of operating 3 cylinders it would be 3 hyd motors.
tracked buggy1.png

taking a different route (below diagram). if you had 3 separate valves, that were open center. you could run all 3 in a series. and achieve same thing as above diagram

tracked buggy2.png

the 3 open center 3 stacked spool valves with 3 actuators may not be ideal compared to ""proportional control valve"" but *shrugs* mix and match what you already have.
 
   / mini tracked wheelbarrow or dumper In the USA? #28  
wheel diameter -> wheel circumference -> 63360 inches in a mile

wheel diameter in inches * 3.14= circumference of wheel
63360 / circumference of wheel = full revolution wheel will need to make to travel a mile.

63360 * 6 / circumference of wheel = amount of revolution wheel will need to make to travel a 6 miles.

hyd motor RPM (revolutions per minute) * 60 = revolutions per hour.

you will want to get revolutions per hour of hyd motor. near revolutions of wheel will need to take to travel 6 miles. to get your 6MPH (miles per hour)

a hyd motor operates on a curve. the more GPM of hyd fluid goes through it the more RPM's it will produce ((speed is controlled in how much the valve is either open or closed per hyd motor)) in your case, you are looking at max speed of the tracked buggy. and will be limited by how many GPM the engine / hyd pump produces. the same thing goes for hyd motor in an implement attached to the tracked buggy.

===========
i realize i say wheel above. but there will be a main drive wheel / sprocket within each track the hyd motor will be attached to. measure the diameter of this wheel / sprocket for above calculations. all other rollers and wheels and sprockets within the track are null and void.

the front spooked wheel, looks like a tension wheel (looks like a long bolt up under the chassis, that loosens or tightens the track. and the area marked, looks more like drive sprocket, (more bolts in it. and right near the engine) i may be wrong.
tracked buggy4.png
 
   / mini tracked wheelbarrow or dumper In the USA? #29  
below is from... Hydraulic
Hydraulic Pumps & Motors:

Pumping: 1 Hp = 1 GPM x 1500 Psi (linear relationship i.e. 2 GPM @ 1500 Psi = 2 Hp)
Displacement (in3 / rev) = GPM x 231 /RPM
Hp to drive hydraulic pump = Psi x GPM / 1714
Typically assume hydraulic pump/motor efficiency of 85%
Hydraulic motor torque (in-lb) = Pressure (Psi) x motor displacement (in3/rev) / (2 x Pi)
Hydraulic motor speed (RPM)= 231 x GPM / motor displacement (in3/rev)
Hydraulic motor power (Hp) = Torque (in-lb) x RPM / 63025

63360 * 6 / circumference of wheel / 60 = RPM (revolutions per minute) to travel at 6 MPH.

Hydraulic motor speed (RPM)= 231 x GPM / motor displacement (in3/rev)
adjust the RPM value in above equation to roughly estimate how much GPM you will need from hyd pump. ((used to help size hyd pump that is connected to engine))

for list of different size hyd motors (cubic inches of displacement)
https://www.surpluscenter.com/sort.asp?catname=hydraulic&keyword=HML1
 
   / mini tracked wheelbarrow or dumper In the USA?
  • Thread Starter
#30  
Thanks for all the info Again. I think my dad knows all this stuff maybe not off the top of his head but he understands it. He used to be an aircraft mechanic after he stopped farming so things are very precise. I'm not sure how he's going to want to make this machine. He told me to look up proportional hydraulic control valves so that's what I did for him. He's the type of guy that when he gets something in his mind he goes for it. I know it would probably be easier the way you're describing but it might not be as neat as my dad would like. Also, I was hoping to have just one joystick forward/back/right/left so when I push the one stick all the way right I believe the tracks on the right side would go in reverse and the track on the left would go forward doing a 360 and when the joystick is pushed forward all the way both tracks are controlled together. thats what i am sort of going for. right joystick for control on all directions or travel and left joystick to control implements.
ok i gotta hit the sack i will finish any more questions i have tomorrow or this weekend

thanks for putting all those formulas in one area. makes it simpler.
 

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