I knew you will get it. Roland
----- Original Message ----- From: Al Lumas<mailto:[email protected]> To: Roland<mailto:[email protected]> ; Electric Vehicle Discussion List<mailto:[email protected]> Sent: Monday, May 18, 2015 2:20 PM Subject: Re: [EVDL] Wheels for efficient vehicle. 720 / 24 = 30 lbs per square inch. At 12:54 PM 5/18/2015, Roland via EV wrote: >One more thing that I did not mention. >Is the square area of the solid rubber sections of the tire face >against the driving surface. You calculated the square area of the >actual contact surfaces of the tire and divided that into the >vehicle weight that is on that tire. >The best way we did this when we were road rally racing, is to ink >the tire and than lower it on a white plastic cover board. You will >find that a wide tire will have a narrow foot print about 2 inches >long for the width of the tire. If there is no thread on the tire >and the tire is 12 inches wide, then you have about 24 square inches >of contact rubber. > > Lets say the weight on that tire is 720 lbs, therefore 720/24 = 3 > lbs per square inch which is not good for traction. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150518/a4dbb721/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)
