On Mon, Apr 28, 2014 at 2:01 PM, Lee Hart <[email protected]> wrote:
> On the blade hitting rocks: Copy the same setup they use on the ICE. They > always have some kind of clutch setup so if the blade hits something, it > can instantly stop while the clutch slips. Usually, the clutch is nothing > but a big bolt that pinches the blade between a pair of friction washers. > > My last experience with an ICE mower (long ago) had a soft metal square-section key between the blade hub and the shaft. Hit a rock and you'd shear the key before anything bent. Made for kind of a hassle to get it running again (a trip to the mower repair shop for the special soft key), but it was cheaper to manufacture than the friction washer approach. I'm a big fan of friction washers. The three mower motors on my electric tractor mount the blades this way. I've hit lots of stuff and never had a problem. Chris -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140428/c91205cd/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
