| ----- Original Message -----
| From: "John S. Denker" <jsd@MONMOUTH.COM>
| To: <PHYS-L@lists.nau.edu>
| Sent: Saturday, January 25, 2003 7:35 PM
| Subject: Re: Segway info
|
|
| | Bob Sciamanda wrote:
| |
| | > The Amazon ad for the Segway Human Transport includes some
interesting
| | > technical stuff. Go to:
| | >
| http://www.amazon.com/exec/obidos/tg/detail/-/B00007EPJ6/ref=segway_tn_lef
| t/103-6703733-8593400
| |
| | It says:
| | "The number of teeth on each gear is chosen
| | to produce noninteger gear ratios."
| |
| | Oh reeeeeeally?
| |
| | Such gears must be lubricated with 100% snake oil.
| |
| | Non-integer ratios would be quite astounding,
| | considering that the gear ratio is equal to the
| | number of teeth on one gear divided by the number
| | of teeth on the other gear. It just cracks me
| | up to visualize a gear with a non-integral number
| | of teeth.
Bob S answered:
|
| It is the RATIO which is to be non-integer, not the number of teeth.
| EG: Teeth numbers of 24 and 12 have an integer ratio: 24/12 = 2.
| OTOH teeth numbers of 24 and 13 have a non-integer ratio: 24/12 = 1.846.
.
THE END OF THE ABOVE LINE SHOULD BE: 24/13 = 1.846. . .