looked at the UTube videos ... the sound is being caused by the cage, not by wheel ... well, kinda ... it's the wheel vibrating the cage. If you look at all the videos, some are louder than others ... so ... the noise they make is in direct proportion to the sturdiness of the cage ... One of the videos it shows one attached to a wood cabinet ... it made no noise at all.
I found another cute chin video while looking at the ones on the flying saucer one ...
http://uk.video.yahoo.com/watch/4763082/12717427 (It's called Eaves Dropping 10)
Well actually i nvr though about this, my chin is 4 months, she looks almost full size and runs fine is a 12 inch, but with the flying suacer it takes up more space, if it doesnt attach to cage they fall apart, and with the chin falling of, when they stop i would think it would throw almost any chin off
Anything under 15" in a wheel causes the back to grow in an arched shape as they grow ... a problem that will be more evident later in life and cause the chin much pain.
...issues with them falling off... (in reference to the flying saucer wheel)
We've had as many as 200 chins at one time and have 6 flying saucer wheels ... the only time I have seen a problem is when they both want to go on the wheel at the same time and in opposite directions! It does not go then.
I would never let kits in the cage that has a flying saucer or a wheel at the same time as I have adults in the cage ... Adults can go to fast for a kit and throw them off.
Chins will jump off when they quit running or ride it out even to the point of it rocking back and forth until it stops, but I've never seen one thrown off of it.
We've had our flying saucer wheels for over 10 years and no injuries to date.
Jo Ann