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 Idea for The easiest 4x4+4WD

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Marines2621
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Thunderdivine
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PostSubject: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeFebruary 19th 2013, 4:47 pm

So I've been thinking... Anyone remember how we made our first carts? Well, we made the steering from two wheels connected to a wooden plank, and for it to turn we used only one center hole in the plank... So. How about you take two rear or std transaxles, and mount the front one in a tray so it can pivot, turn side to side by one point only?! If you want 4WD steering you do this to both axles, so in a turn it would look like / \ for 4WD steer, watched from above, anyone done this before? I'll draw up a sketch later on if it was poorly explained cheers
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Tractor Man Jeff
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeFebruary 19th 2013, 5:11 pm

Mean like an articulated 4x4 tractor? I think it could work. Only problems would be shifting linkage and steering.
Idea for The easiest 4x4+4WD Th?id=H.4583130440861929&pid=1
Idea for The easiest 4x4+4WD P1010566Large
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Thunderdivine
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeFebruary 19th 2013, 5:33 pm

Not really like that but kind of just easier, since you would want to make the pivot point on the same point as the pulleys, meaning all you need is, engine, two belts and two axles. So when you turn it keeps the output shaft on the turn point. Need a sketch lol
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeFebruary 19th 2013, 5:37 pm

It can be done, but there are problems. You need to have really long axles or a really narrow tractor.

allowances have to be made for the axles to swing through their arcs.
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Thunderdivine
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeFebruary 19th 2013, 5:46 pm

No problem if its lifted. Well it won't have a super turn radius.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeFebruary 19th 2013, 5:57 pm

I got ya. Once again, the linkage would most likely get ya. I would see it working, but how would you mount the engine? I think someone with a bunch of tractors laying around should try this.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeFebruary 19th 2013, 6:17 pm

Mount it original spot, then you'll need two more pulleys if not mount it midway like 2/3rd, ya someone with many parts should try this Smile
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeFebruary 19th 2013, 6:19 pm

That way you wouldn't need an all steer transaxle. I still want to make an articulated tractor.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 11:33 am

the easiest way to do it in my opinion is hydraulic drive, ive seen a few lawn tractors over the years that have an engine running a hydraulic pump and then 2 lines going to the controls then to the rear axle getting 2 of those axles set up to articulate like the one in the picture would be easy because you can just split the lines after the pump and run both axles at once
and for steering just get a power steering box off a truck and run it through the pump aswell, so it will work like a truck does when the machine is off there will still be steering but stiff and when its running the pump will make it pretty easy
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 12:28 pm

seems pretty straightfoward. but how would you mount the transaxle to keep the pulley in the same spot and still let it rotate?
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 1:02 pm

Sounds like an idea that would work but how would you keep the belt from coming off the pully.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 3:26 pm

that goes in with my question, i think
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Jordan
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 3:28 pm

what do you guys need cleared up?
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 3:30 pm

Jordan wrote:
the easiest way to do it in my opinion is hydraulic drive, ive seen a few lawn tractors over the years that have an engine running a hydraulic pump and then 2 lines going to the controls then to the rear axle getting 2 of those axles set up to articulate like the one in the picture would be easy because you can just split the lines after the pump and run both axles at once
and for steering just get a power steering box off a truck and run it through the pump aswell, so it will work like a truck does when the machine is off there will still be steering but stiff and when its running the pump will make it pretty easy


Hydraulic motor wasn't an option tho when I wrote this, tho I agree, easiest but expensive.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 3:34 pm

that goes in with my question, i think
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 3:49 pm

A hydraulic piston for steering and a PTO drive hydro (like old Cubs) would work perfect for this scenario. The steering wheel could control the piston for your steering, and the pivot point could be solved by using a universal joint.

Running belts might be tricky through the midsection as there is a good chance of rubbing somewhere. Having the front axle driven by belt and off that axle pulley a RAGB running to a Ujoint then to another RAGB for the rear would probably work perfect.


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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 3:51 pm

Doug Fackler wrote:
A hydraulic piston for steering and a PTO drive hydro (like old Cubs) would work perfect for this scenario. The steering wheel could control the piston for your steering, and the pivot point could be solved by using a universal joint.

Running belts might be tricky through the midsection as there is a good chance of rubbing somewhere. Having the front axle driven by belt and off that axle pulley a RAGB running to a Ujoint then to another RAGB for the rear would probably work perfect.


That ain't easy....
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 3:53 pm

Thunderdivine wrote:
Doug Fackler wrote:
A hydraulic piston for steering and a PTO drive hydro (like old Cubs) would work perfect for this scenario. The steering wheel could control the piston for your steering, and the pivot point could be solved by using a universal joint.

Running belts might be tricky through the midsection as there is a good chance of rubbing somewhere. Having the front axle driven by belt and off that axle pulley a RAGB running to a Ujoint then to another RAGB for the rear would probably work perfect.


That ain't easy....

probably easier then trying to rig up pulleys and belts though, and the less belts in the system the more durable it is
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 3:57 pm

I wouldnt say not easy more than expensive and time consuming. It would be a lot easier though than having to figure out how to run your belts and pulleys so you dont get any rub wear or slack.


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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 4:08 pm

Would be wierd to see one built. But if u can make it work, i wanna see that get done.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 6:57 pm

I tried to upload a pic if it didnt work click the link below \/

Idea for The easiest 4x4+4WD 4x4_cu11
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 7th 2013, 7:25 pm

dylansrockinrigs wrote:
I tried to upload a pic if it didnt work click the link below \/

Idea for The easiest 4x4+4WD 4x4_cu11
Yeah this might work.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 8th 2013, 8:28 am

All this is expensive,

What you do is, take two identical gearboxes.

Like those two in this vid:
https://www.youtube.com/watch?v=zl1fH1oj1Ik

Then you make em pivot (turn left to right) on the same axe as the pulley, then you won't need more gears, more pulleys and so on.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 8th 2013, 8:30 am

I got 4 of these laying around but only two identical (same gearing).

Idea for The easiest 4x4+4WD F9C2C197-C243-43D1-BF04-FF8266A3AB4D-43305-00000D5154EC3A4A_zps9660337b

Idea for The easiest 4x4+4WD A509F862-1A72-4161-9B2F-AD9F32568B68-43305-00000D514ABA8E4A_zps460910f0

But im planning on makin a tracked autonomys robot mower of those two identical.
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PostSubject: Re: Idea for The easiest 4x4+4WD   Idea for The easiest 4x4+4WD Icon_minitimeMarch 8th 2013, 5:46 pm

you could build something like this
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