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Old 2018-09-25, 12:30 AM   #16
Canapin
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Hi,
I've made a somewhat similar topic on the French forum:

https://forum.monocycle.info/t/le-su...modifies/22857

Of course, it's written in French but there are images and links.

Last edited by Canapin; 2018-09-25 at 12:31 AM.
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Old 2018-09-25, 03:41 AM   #17
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Quote:
Originally Posted by OneTrackMind View Post
I saw a video recently where the frame was built like a scissor jack. Pedalling slowly extended the frame up to a giraffe height as it was ridden.
Sounds like Sem Abrahams' Scissor Cycle. Built by Tom Miller with help from Sem and others, it weighs 65 pounds and is powered by a small automotive hydraulic jack. You pump a handle under the seat to raise it up, and then can release pressure to make it go down.

Found a video! Quality is not great, because it was done by a small digital camera in 2005. 2 versions; one is .avi and the other is .mpg
Sem Abrahams Scissor Cycle at 2005 NAUCC (.avi)
Sem Abrahams Scissor Cycle at 2005 NAUCC (.mpg)
I just noticed my old videos don't seem to play on Smugmug. These links will be temporary, so hopefully uploading them again will "fix" them on Smugmug.

The full album is here. In there you can also see Zack Baldwin being defeated by yet another dumpster, The Semcycle Conference Bike, Teresa riding a uni with a very tiny wheel, Zack and Jeff Groves showing off their owies, a very cool flying lizard uni-tattoo, a couple of tiny-wheeled giraffes, the Crabcycle, Tommy Miller and his manicurist's nightmare, Flaming Puck Hockey, Free Smells, a B.C. Wheel race, Gilby winning the first American 10k race with a Schlumpf hub in it (by a huge margin), Jeff Groves showing why he had owies on his feet, and Josue Barreto making many silly faces.
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Old 2018-09-25, 08:55 AM   #18
OneTrackMind
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Quote:
Originally Posted by johnfoss View Post
Sounds like Sem Abrahams' Scissor Cycle. Built by Tom Miller with help from Sem and others, it weighs 65 pounds and is powered by a small automotive hydraulic jack. You pump a handle under the seat to raise it up, and then can release pressure to make it go down.
Very similar but I don't remember seeing the rider operating a jack handle. My impression was that the pedalling itself operated the jack. The down action was triggered by a switch under the seat so it probably was hydraulic. Maybe an improved version?

I was picturing a lead screw driven off the cranks but that may well have been my imagination of how I would have designed it.
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Last edited by OneTrackMind; 2018-09-25 at 08:56 AM.
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Old 2018-09-25, 03:00 PM   #19
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I don't know if this was actually built or just someones imagination:

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Old 2018-09-25, 03:07 PM   #20
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Another:


From:
https://gigazine.net/gsc_news/en/20091216_monowheel
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Old 2018-09-25, 08:37 PM   #21
monociclos
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Regarding Sem Abrahams' Scissor Cycle, here you have another lame video:

https://www.facebook.com/shawn.smith...12786280115258 (sorry, it´s a facebook video)

Quote:
Originally Posted by johnfoss View Post
The full album is here. In there you can also see Zack Baldwin being defeated by yet another dumpster, The Semcycle Conference Bike, Teresa riding a uni with a very tiny wheel, Zack and Jeff Groves showing off their owies, a very cool flying lizard uni-tattoo, a couple of tiny-wheeled giraffes, the Crabcycle, Tommy Miller and his manicurist's nightmare, Flaming Puck Hockey, Free Smells, a B.C. Wheel race, Gilby winning the first American 10k race with a Schlumpf hub in it (by a huge margin), Jeff Groves showing why he had owies on his feet, and Josue Barreto making many silly faces.
Great album, thanks for sharing!!
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Old 2018-09-25, 09:35 PM   #22
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Quote:
Originally Posted by Canapin View Post
Hi,
I've made a somewhat similar topic on the French forum:

https://forum.monocycle.info/t/le-su...modifies/22857

Of course, it's written in French but there are images and links.
Can we repost here the pictures? or tell Canapin and bouin-bouin to repost here??

It would be great to have it all together!!
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Old 2018-09-25, 11:25 PM   #23
aracer
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Quote:
Originally Posted by johnfoss View Post
Landsurfing Uni?
I'm not a Landsurfing expert, but wouldn't you want to be able to switch the sail from one side to the other? I don't know anything about this thing, including where I got the picture. Also including whether it was functional, which I have my doubts about. It seems like the wind would always cause it to rotate around the contact patch of the wheel. Does it need something to hold it in a straight line that's different from the direction of the wind?
It appears to have a standard windsurfer sail and fittings in which case the sail can be leaned forwards and backwards and rotated around the mast. So you can lean it forwards to switch from one side of the wheel to the other, though I doubt it can be tacked so when going from one side to the other you'll go a gybe in which case the sail flips around the front. Also because you can lean the sail forwards and backwards you can set the centre of pressure above the contact point of the wheel to go in a straight line - and just like on a windsurfer you steer by leaning the sail forwards or backwards to move the centre of pressure in front or behind. If anything though the wheel seems too far forwards - on a performance windsurfer you just have a tiny fin set right at the back of the board. I doubt I could sail it, but I expect any reasonably expert windsurfer could, it ought to handle very similarly.
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Old 2018-10-03, 08:48 AM   #24
monociclos
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8 footed unicycle.

http://sillycycle.com/unicycle_factory/silly.html



Have you ever tried before?

Do you know the equivalent size in inch / size of shoes?

My guess: 26 inch and 8 x 32 EUR shoes

Thanks!!
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Old 2018-10-04, 09:45 AM   #25
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It'd be crazy to not mention the tandem uni:


I also love that giraffe that has two legs instead of a wheel. I'm sure I've seen a video of it in action before, it walks like a drunken maniac

EDIT:

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Last edited by Piece Maker; 2018-10-04 at 09:46 AM.
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Old 2018-10-27, 05:36 PM   #26
Eric aus Chemnitz
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Here's a video of the wood ball unicycle in action:
https://www.facebook.com/groups/5117...7976439024069/
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