Ryno motors - self-balancing, one wheel, electric scooter

http://www.youtube.com/watch?v=t7uvv7EYqg0
[youtube]t7uvv7EYqg0[/youtube]

http://rynomotors.wordpress.com/

Range Up to 30 miles
Max Speed 25 mph
Recharge Time LiFePo4 1 ½ hours
Tire Diameter 25”
Weight of Bike 125 lbs.
Footprint 16” x 34”
Max Hill Incline 30%
Max Rider Weight 250lbs
Turning Radius Zero to 3 ft.
Estimated Retail Cost $3,500


Useless without battery power of course...
Lock

Look at that thing! I was a unicycle rider in my younger years. Maybe I could go on, riding one of these!

http://wackyboards.blogspot.com/2010/08/ryno.html

I like to see how the steering action works (^ he mentions it in the above video)
maybe like the enicycle?
http://wackyboards.blogspot.com/2009/12/self-balancing-unicycle.html

more vids..
http://www.jeromedemers.com/blog/2010/08/rhino-motors-self-balancing-one-wheel-electric-scooter/


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

some standup one wheeler..
http://wackyboards.blogspot.com/2010/07/single-wheel-segway.html

sit down one wheeler,
http://wackyboards.blogspot.com/2010/08/ryno.html


Raptor by Nick Thatcher
http://www.thatch-industries.webs.com/
http://www.engadget.com/2012/12/16/homemade-raptor-unicycle-uses-an-arduino-to-keep-upright/


The "Thing" with seat
Haotian
https://sites.google.com/site/onewheeledselfbalancing/
https://sites.google.com/site/onewheeledselfbalancing/Home/one-wheeled-stand-up-scooter
https://sites.google.com/site/onewheeledselfbalancing/Home/one-wheeled-scooter


[youtube]6N59ziOfH-Q[/youtube]

[youtube]1CnASCm3uUI[/youtube]

[youtube]2SOB7r7S-NI[/youtube]

Speed: 20 MPH
Range: 30 miles level ground 
Battery: Lithium Ion (36 volts at 32 amp hours) slide out with carrying handle and key lock.
Suspension: 2 1/2″ travel gas charged fully adjustable
Tire size: 17″ rim 25″ outside diameter x 200mm wide
Seat Height: 32″ at midpoint of shock travel
Controls: twist throttle and hand brake

http://rynomotors.wordpress.com/

Give 'em props for being one of the 1st small EV companies to actually make reasonable range expectations! 32AH = 20MPH, 30miles - I can see that.

Definitely thinking outside the box with this one!

This Ryno unicycle balancer looks way cool! Segway did it only halfway: Dynamic balancing backward/forward, but static sideways. Here we finally have one that is 2DOF dynamic.

Very interesting from a control theory point of view. E.g. what control strategy is best to recover a jump up a curb? How to share the control between the automatic algorithm and the human inertial inputs (through motions and Cg shifts)?

Notice how Ryno demo video only shows flat riding. I'm guessing that while it is possible to come up with a slow speed stable controller for moderate unevenness in the short term, the challenges to truly take powered unicycles to a point where they are as exciting (quick, responsive) as a regular two wheeler will be a challenge for some time. The Segway isn't all that capable of stunts despite a decade under the skin now. See videos at end.


Link to video and info from the company:
http://rynomotors.wordpress.com

ChinaPhil said:

Speed: 20 MPH
Range: 30 miles level ground 
Battery: Lithium Ion (36 volts at 32 amp hours) slide out with carrying handle and key lock.
Suspension: 2 1/2″ travel gas charged fully adjustable
Tire size: 17″ rim 25″ outside diameter x 200mm wide
Seat Height: 32″ at midpoint of shock travel
Controls: twist throttle and hand brake

Click to expand...

What happens when you run a Segway into a curb: Something like this should be recoverable in the control algorithm even with an untrained rider I thought.
http://www.youtube.com/watch?v=LCNLBNP61Wk

The rather lame way one should do curbs:
http://www.youtube.com/watch?v=ntaoTi-CouA

Presumably practiced rider showing Segwau "stunts". Not nearly as dynamic as on a bike.
http://www.youtube.com/watch?v=iaHe3HyJ6pM

ain't no panic stop on one of those puppies !!!!

Ypedal said:

ain't no panic stop on one of those puppies !!!!

Click to expand...

I was thinking that too - then realized, perhaps they use the motor to counter braking forces? Unfortunately, that would also drain the batteries more than we're used to seeing?

Gotta hand it to 'em to see working proto-type!

Two words:

Dead Battery!

I'd hate to be braking hard and have the battery fail!

Interesting concept for sure, but I think I will stick to two wheels personally. :wink:

http://gizmodo.com/riding-the-ryno-when-two-wheels-is-too-many-1507740486

http://vimeo.com/84901680



At 10 mph, a 10-mile range, and a 6-hour recharge, I'm not sure it'll catch more attention than a Solowheel or the like.

Since acceleration and braking have to be crap, I'll pass. It's neat that they got it to work, but as a product for street use as a 1 wheel emoto it has no future.

Will snow chains fit? :lol:

Of course, the horseless carriage "has no future" either.

LockH said:

Of course, the horseless carriage "has no future" either.

Click to expand...

Not single wheel horseless carriages. They're like a 1 legged horse, and would be interesting to get one up and running, but of no practical use.

Referring to a one-legged horse pulled vehicle would be sorta extremely silly. That's not what was being referred to of course.