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Main Forums => The Roundtable => Topic started by: MechAg94 on April 13, 2021, 07:28:55 PM

Title: Screw-Powered ATV
Post by: MechAg94 on April 13, 2021, 07:28:55 PM
Screw-Powered ATV
https://www.youtube.com/watch?v=mNhMVg-NeeE

Russian all terrain vehicle using screws instead of tracks to cross tough terrain.  I don't think I have seen this before.  Pretty cool.
Title: Re: Screw-Powered ATV
Post by: Angel Eyes on April 13, 2021, 07:42:30 PM
Ford, 1929

https://www.youtube.com/watch?v=Fo31_3UzTTY
Title: Re: Screw-Powered ATV
Post by: WLJ on April 13, 2021, 08:00:59 PM
If the guy on the Fordson version fell off his seat it would be like going through a meat grinder assuming there was no instant braking dead man switch [barf]
Title: Re: Screw-Powered ATV
Post by: Fly320s on April 13, 2021, 08:36:06 PM
Colin Furze built his own.

https://www.youtube.com/watch?v=4hI22E9LcY0
Title: Re: Screw-Powered ATV
Post by: MechAg94 on April 13, 2021, 09:19:48 PM
If the guy on the Fordson version fell off his seat it would be like going through a meat grinder assuming there was no instant braking dead man switch [barf]
Weren't a lot of tractors like that back in the day?  Don't fall off.  Don't put your hand in there.
Title: Re: Screw-Powered ATV
Post by: RoadKingLarry on April 13, 2021, 09:32:54 PM
Our farming fore fathers were made of stouter stuff. Well, the ones that survived anyway.
Title: Re: Screw-Powered ATV
Post by: Angel Eyes on April 14, 2021, 09:31:47 AM
Producing food and improving the gene pool at the same time.  Win-win.
Title: Re: Screw-Powered ATV
Post by: Hawkmoon on April 14, 2021, 12:32:28 PM
Colin Furze built his own.

https://www.youtube.com/watch?v=4hI22E9LcY0

I may have seen a more annoying video some where in the distant past but, if so, I don't remember when or where. Between his talking like a 45 RPM record played at 78 RPM, his constant screaming, and the intrusive background music -- I barely made it beyond the halfway mark before I had to shut it off. It's a really nice bit of garage engineering, but his presentation just ruins it.
Title: Re: Screw-Powered ATV
Post by: BobR on April 14, 2021, 08:30:09 PM
The Soviets had one also.

https://www.thedrive.com/watch-this/14987/this-fully-restored-screw-driven-amphibious-truck-is-practically-unstoppable

The M29 Weasel prototype was a Fordson Snow Devil, it eventually had treads.

bob
Title: Re: Screw-Powered ATV
Post by: Doggy Daddy on April 18, 2021, 12:03:25 AM
I may have seen a more annoying video some where in the distant past but, if so, I don't remember when or where. Between his talking like a 45 RPM record played at 78 RPM, his constant screaming, and the intrusive background music -- I barely made it beyond the halfway mark before I had to shut it off. It's a really nice bit of garage engineering, but his presentation just ruins it.

You made it further than I did!
Title: Re: Screw-Powered ATV
Post by: dogmush on April 18, 2021, 06:16:06 AM
I may have seen a more annoying video some where in the distant past but, if so, I don't remember when or where. Between his talking like a 45 RPM record played at 78 RPM, his constant screaming, and the intrusive background music -- I barely made it beyond the halfway mark before I had to shut it off. It's a really nice bit of garage engineering, but his presentation just ruins it for you.

FTFY.  His presentation seems to be pretty effective over all.

https://youtubernetworth.com/colin-furze/
Title: Re: Screw-Powered ATV
Post by: 230RN on April 18, 2021, 06:26:22 AM
Our farming fore fathers were made of stouter stuff. Well, the ones that survived anyway.
:rofl:

And WLJ:  Wouldn't the same thing happen with regular tracks?

And Hawmoon:  Agreed. I've noticed in watching some of our gunship attack videos there's a tendency to use heavy rhythmic contemporary loud music, too.  Gits yer dander up, I guess.

Terry

Title: Re: Screw-Powered ATV
Post by: WLJ on April 18, 2021, 09:21:44 AM
:rofl:

And WLJ:  Wouldn't the same thing happen with regular tracks?

And Hawmoon:  Agreed. I've noticed in watching some of our gunship attack videos there's a tendency to use heavy rhythmic contemporary loud music, too.  Gits yer dander up, I guess.

Terry

At least with reg tracks there's the hope you'll land on the tracks and can then roll off and failing rolling off I suppose, not knowing tractors better, that with your foot off the petal the tracks will quickly stop hopefully before dumping you in front of the track.
With screws, I guess it may depend on which side you fall off to, the screw is going to immediately start chewing you up like a meat grinder with you caught between the screw and the body of the tractor. 
Title: Re: Screw-Powered ATV
Post by: Jim147 on April 18, 2021, 10:23:34 AM
I've never been on a tractor with a gas pedal. I set the throttle lever to the rpm I need and it stays there until I change it.
Title: Re: Screw-Powered ATV
Post by: WLJ on April 18, 2021, 10:32:31 AM
I've never been on a tractor with a gas pedal. I set the throttle lever to the rpm I need and it stays there until I change it.

Like I said I don't know tractors all that well. Why that and not a petal? Maybe hard to maintain the petal in the same position and thus a constant speed while going over bumps and such?
Title: Re: Screw-Powered ATV
Post by: Ron on April 18, 2021, 10:33:09 AM
Why not a kill switch wristband, or switch in the seat or some other method of shutting down the screws unless you're in the seat?
Title: Re: Screw-Powered ATV
Post by: WLJ on April 18, 2021, 10:35:12 AM
Why not a kill switch wristband, or switch in the seat or some other method of shutting down the screws unless you're in the seat?

I did ask about a dead man's switch in my first post but in 1920s would something like that be considered?
Title: Re: Screw-Powered ATV
Post by: Jim147 on April 18, 2021, 11:02:19 AM
You need certain rpm's to run some equipment. For pto speed.

And it would get kinda busy with a clutch and three brake pedals at my feet already.
Title: Re: Screw-Powered ATV
Post by: WLJ on April 18, 2021, 11:07:34 AM
You need certain rpm's to run some equipment. For pto speed.

And it would get kinda busy with a clutch and three brake pedals at my feet already.

Okay, now I'm curious about the three brake pedals.
I'm thinking main tractor brake, equipment brake maybe, and ?
Title: Re: Screw-Powered ATV
Post by: Jim147 on April 18, 2021, 11:18:00 AM
One brake pedal works on both tires the other two are called steering brakes. If the front wheels are off the ground you hit the brake on the side you want to turn.
Title: Re: Screw-Powered ATV
Post by: WLJ on April 18, 2021, 11:22:29 AM
One brake pedal works on both tires the other two are called steering brakes. If the front wheels are off the ground you hit the brake on the side you want to turn.

Interesting, I didn't know that. Sort of like brake steering on a tank as I understand it but I never drove a tank either
Title: Re: Screw-Powered ATV
Post by: WLJ on April 18, 2021, 11:27:31 AM
How are they arranged?
Is it
Both, L, R
or
L, Both, R
or
L, R, Both
Title: Re: Screw-Powered ATV
Post by: Jim147 on April 18, 2021, 12:29:56 PM
L then clutch on one side both then R on the other.
Title: Re: Screw-Powered ATV
Post by: zxcvbob on April 18, 2021, 01:49:02 PM
All the tractors I've been on (not all that many, really) had two brake pedals on the right side; you could mash them individually or together.  The clutch is on the left side. Some had a link to tie the 2 brakes together to make one big pedal, then unlink it if you need to brake-steel to get out of a ditch or something.  I've never really steered with the brakes but have used them to get unstuck when just one wheel is spinning in the mud.
Title: Re: Screw-Powered ATV
Post by: dogmush on April 18, 2021, 02:20:50 PM
Like I said I don't know tractors all that well. Why that and not a petal? Maybe hard to maintain the petal in the same position and thus a constant speed while going over bumps and such?

Also most tractors have a governor that is actually running the throttle.  You set the lever to the desired RPM, and the governor adjusts to varying engine loads to hold that RPM (For PTO stuff mostly.  Hydraulics especially).  That setup isn't super conducive to pedal control when you want consistent output speed.