On Aug 6, 2014, at 1:25 PM, Roger Stockton via EV <[email protected]> wrote:
> I believe you are mistaken. I think what you need to consider is termed > "overhung load"; this Gates document gives a good overview: Roger, thanks for that excellent resource. Obviously, I'm not an ME...but I'm sure getting a crash course in a tiny subset of the field. The document suggests that reducing belt width, increasing pulley diameter (even while keeping gear ratios constant between the two pulleys), and moving the belt closer to the bearing all reduce overhung load. Since I'm starting from scratch with this, I should have no trouble optimizing all three if need be. In particular, it looks like it shouldn't be any trouble getting the pulleys practically right on top of the bearing. The document also ends with a sidebar saying they've got belts with the same geometries as chains that also have the same load ratings with better life and maintenance. I'm thinking it'd be a good idea to see if I can't find somebody at Gates to help me run some numbers and suggest part specifications. I'd almost undoubtedly use their belts (I just replaced the disintegrating fan belt on the Mustang with a Gates belt). I'm not sure that they also make pulleys...but, if they do, that'd be the obvious choice rather than some other manufacturer or a machine shop. b& -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 801 bytes Desc: Message signed with OpenPGP using GPGMail URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140806/6bea57e6/attachment.pgp> _______________________________________________ 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)
