Ouch 30 hours is a short life for sure, B&S claims must be optimistic or probably for constant load but so much difference irl show a problem...
misaligned motor to wheel give bearing stress(and chain/sprocket wear), brushes are not concerned so much. If seeing good commutation your brushes should be shiny and pefectly smooth aspect as here: http://vehiculeselectriques.free.fr/Forum/files/1erchange_353.jpg if not something is wrong here: High revolution speed to much current brushes are soft grade are most usuals causes. How many amps mean do you use for your commute ? 2007/8/19, dale henderson <[EMAIL PROTECTED]>: > > it is 48 volts, my average commute is 20 miles which is done in about 45 > minutes. to make it simpler lets say 1 hour per 20 miles so 600 miles / 20 > = 30 hours that is a lot less than what it should be?! > > could a misaligned motor to wheel account for this? if so why would the > brush wear be symmetric > > *"vehiculeselectriques.free.fr" <[EMAIL PROTECTED]>* wrote: > > what is your voltage ? > > Etek brushes life is told to be near 1000 hours at continous rating and > 500 hours at 150A this on 48V, higher will short this a lot ! > > > 2007/8/19, dale henderson < [EMAIL PROTECTED]>: > > > > needed to replace my brushes after only 571 miles on the motor [1500 > > total thus far for the bike on electric power] the brushes were worn down to > > 4 mm on the neg and 1 mm on the positive. > > > > what has been other peoples experiences with the frequency of etek brush > > replacement? > > > > > > Albuquerque, NM > > http://geocities.com/hendersonmotorcycles/blog.html > > http://www.austinev.org/evalbum/1000 > > http://www.austinev.org/evalbum/1179 > > http://www.austinev.org/evalbum/1221 > > http://geocities.com/solarcookingman > > ------------------------------ > > Pinpoint customers > > <http://us.rd.yahoo.com/evt=48250/*http://searchmarketing.yahoo.com/arp/sponsoredsearch_v9.php?o=US2226&cmp=Yahoo&ctv=AprNI&s=Y&s2=EM&b=50>who > > are looking for what you sell. > > > > > > > Albuquerque, NM > http://geocities.com/hendersonmotorcycles/blog.html > http://www.austinev.org/evalbum/1000 > http://www.austinev.org/evalbum/1179 > http://www.austinev.org/evalbum/1221 > http://geocities.com/solarcookingman > > ------------------------------ > Luggage? GPS? Comic books? > Check out fitting gifts for > grads<http://us.rd.yahoo.com/evt=48249/*http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz>at > Yahoo! Search. > >
