# The Dynasphere

**URL:** https://unicyclist.com/t/the-dynasphere/117388
**Category:** General
**Created:** [February 21, 2012, 5:29pm UTC](https://unicyclist.com/t/the-dynasphere/117388 "2012-02-21T17:29:10Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![tholub](https://unicyclist.com/user_avatar/unicyclist.com/tholub/32/80_2.png) [@tholub](https://unicyclist.com/u/tholub)
#### Post date: [February 21, 2012, 5:29pm UTC](https://unicyclist.com/t/the-dynasphere/117388/1 "2012-02-21T17:29:10Z")

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I’ve seen a picture of this thing before, but never a promotional video. It’s sort of an overgrown monowheel, invented in 1932. Watch it get speed wobbles at 1:08. It’s not clear if there’s any mechanism to avoid gerbilling.

Still, an impressive engineering feat.

[![](https://unicyclist.com/uploads/default/original/3X/4/d/4d0bae4a38f09bb30784bf16cbf85f78efe08c72.jpeg "The Dynasphere! Psychotic 1930s Vehicle!") ](https://www.youtube.com/watch?v=rvA7hDh_vhY)

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### Author: ![skilewis74](https://unicyclist.com/user_avatar/unicyclist.com/skilewis74/32/1112_2.png) [@skilewis74](https://unicyclist.com/u/skilewis74)
#### Post date: [February 21, 2012, 7:56pm UTC](https://unicyclist.com/t/the-dynasphere/117388/2 "2012-02-21T19:56:25Z")

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You mean the front/back swing? I think I could see a tad of side wobble @ 1:10.

The wheel is so fat it takes almost no balance skill 🕶

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### Author: ![Danny\_Colyer](https://unicyclist.com/user_avatar/unicyclist.com/danny_colyer/32/85950_2.png) [@Danny\_Colyer](https://unicyclist.com/u/Danny_Colyer)
#### Post date: [July 19, 2026, 5:42pm UTC](https://unicyclist.com/t/the-dynasphere/117388/3 "2026-07-19T17:42:39Z")

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![20260719_155853 - Copy](https://unicyclist.com/uploads/default/original/3X/7/9/7939cd4b5e835eec7a2eb0e934a3286b090a7f4e.jpeg)

I spotted this in my local museum (Kingswood Heritage Museum) this afternoon. I thought “that looks like a monocycle”. And sure enough, that’s what it was.

They’ve got so many (gorgeous) Douglas bikes on display in the museum, it’s such a pity they haven’t got one of the prototype Dynaspheres to go with them.

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### Author: ![Setonix](https://unicyclist.com/user_avatar/unicyclist.com/setonix/32/3879_2.png) [@Setonix](https://unicyclist.com/u/Setonix)
#### Post date: [July 20, 2026, 5:59am UTC](https://unicyclist.com/t/the-dynasphere/117388/4 "2026-07-20T05:59:14Z")

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I would have been cool to see these wheels everywhere on the streets. I reckon at a forward collision, the inner seating section just slides forward and there must be a locking mechanism, so it doesn’t go upside down. Sad to see these contraptions having been abandoned. I would love to come to work in one.

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### Author: ![Wheelou](https://unicyclist.com/user_avatar/unicyclist.com/wheelou/32/104878_2.png) [@Wheelou](https://unicyclist.com/u/Wheelou)
#### Post date: [August 9, 2026, 9:49am UTC](https://unicyclist.com/t/the-dynasphere/117388/5 "2026-08-09T09:49:39Z")

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Now that‘s a **fatty**!