Cris Wilson wrote: > At 12:35 PM 7/23/2002 -0400, "Sean H. Breheny" wrote: > > ... but I do find it hard to believe that the hobby world is > > able to achieve motors that outperform the best industrial motors by a > > factor of 10 in some regard. I'd like to find out if perhaps there is some > > other drawback to the hobby motors or if perhaps they arrive at their > > maximum rated power spec differently which would explain part of the factor > > of 10. > > I would have to guess that the RC motors are designed to give as much power > as possible while keeping the weight down to a minimum. So the casing is > probably lighter in weight, and the bearings are probably not as heavy as the > industrial counterparts, but I would bet that are also not designed to run 24 > hours a day, 365 days a year. > > I know for a certain that the industrial motors are designed to survive in an > industrial setting and run continuously all year. Weight isn't an issue when > your motor is staying on the ground (unless you are talking about some huge > generator motor). It's the same reason you don't find race car engines in long-haul trucks. Both need high power, but other aspects are optimized for widely differing applications. -- Dave Tweed -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.