<html> <body> Tom, <x-tab>        </x-tab>Thanks very much for the detailed information about the hoist. I appreciate the details of your experience that you are willing to share. It was kind of you to take the time for the posts. all the best, Greg Newell At 11:28 PM 4/28/2007, you wrote: <blockquote type=cite class=cite cite=""> In a message dated 4/27/2007 12:41:05 P.M. Eastern Daylight Time, gnewell@ameritech.net writes: <dl> <dd>Tom, <dd><x-tab>        </x-tab>This is an important post to me. Thank you for taking the time! I'd like to ask if the jerky feel from motor driven hoists is present in air motors too. I understand that there is difficulty with the electric units but I wasn't aware of the same problem with air driven units. Also, what is a "differential" chain hoist? Thanks again! <dd>Greg Newell </dl>Hi, Greg -   I have no experience with air-powered hoists.  I could imagine that might be OK if there's a way to bleed air pressure into the system for start-up and if the rest of the mechanical arrangement is friction-free enough that is doesn't require too much build-up of pressure to start the lift.  Remember that pneumatics depend on a very elastic medium - air.  If you go this route, I'm sure we'd all be glad of your feedback. </blockquote> snip <x-sigsep></x-sigsep> Greg Newell Greg's Piano Forté <a href="http://www.gregspianoforte.com/" eudora="autourl"> www.gregspianoforte.com </a>216-226-3791 (office) 216-470-8634 (mobile) 2003,04,05 & 06 winners of Angie's List Super Service Award </body> </html>