John in general I agree with you. The operative word here is minimum. Big is better unless you have a height problem. As I recall we were dealing with a 7' rack with 7' doorways. Obviously there is a trade off here. As I recall we started with 2" which had a very high rolling resistance on carpet.
Fred Townsend DC to Light John Woodgate wrote: > In message <[email protected]>, dated Wed, 23 Jul 2008, > Fred Townsend <[email protected]> writes: > > >> After [re]studying the issue the MEs came to the conclusion that six, >> 2.5" casters were minimum, > > > If 2.5" is the diameter, I would say that is too small. The ability to > negotiate obstructions without sudden decelerations is far better with > larger wheels. I would think that 4" might be more appropriate. My > bog-standard 19" rack x 80 cm lab trolleys have 3.5" and 4" wheels. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
