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Messages - guity

Pages: [1] 2 3 ... 16
1
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: January 17, 2011, 02:27:05 AM »
Battery changed (way too hard, if there was going to be a next design of this bike, it would need to make it A) convenient to replace individual batteries and B) get rid of the metal cases and replace those with metal bands that can be bolted and tightened around the battery groups).  Had to hammer an old screw driver down on the split corner of the metal case to split it open further before I could get the  battery next door to the bloated stinky bad battery out of the case, and hence the bad battery.

Coming up the hill with about 10 miles ridden on the charge, keeping the bike at 45mph, the voltage never went below 69.  Doesn't prove anything, but certainly no obvious problems after losing the bad battery...

2
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: January 16, 2011, 07:05:11 AM »
OK, Hollywood Electrics provided a battery, I pulled off the faux gas tank, and indeed the bad cell is 24 (guity) or 1 (cell logger).  The bike has been sitting a long time so I am re-charging it back to top.  Individual battery from Hollywood Electrics appears to be already charged on my single cell charger.  So when the big charger is done topping off  the batteries I will take off the front top case of batteries, lift up the back top case of batteries to make room, then slide out the small lower case of batteries where battery 24/1 resides, to replace it.

The bad battery actually seems to be taking some charge at this point in time, better than it was doing after the last ride.  However, it is also already jacking up above the rest of the batteries, at about 3.5 volts as opposed to the average 3.35 volts....

3
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: October 10, 2010, 09:14:58 AM »
Today when I got home from a 26-mile run I whiffed that now-familiar half-toxic but paradoxically kind of sweet smell of a leaky battery.  Pulling out the cell logger, there was one battery at 2.85 volts while the other 23 were around 3.25.  So I have another battery that needs replacement.  I think it is (guity) 24 -- (cell-logger) 1, which is one of those that show up badly in the tests above.  (To verify I need to take off the gas tank and trace down the cell logger wire set of the bad battery to see what exact cell it belongs to (1,9,17?).

Lots of maintenance for this bike (supposedly there wasn't supposed to be that much maintenance), but I do have to say that a year after the initial purchase I'm still not seeing any companies coming out with bikes that have any kind of edge in range/speed.  (Though Brammo should break things wide open next July.)

Also, I guess my accident took a toll on the left fork because it seems to be slowly leaking oil (from the bottom of the fork) onto the front tiire and the floor of the garage...


4
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 22, 2010, 09:10:32 PM »
Anyway, that data kind of re-inforces my gut feeling that this poor bike has never really had a chance to run on 24 good batteries at the same time.  Not that I think it would turn into a rocket if had all 24, but I do think there would be some improved performance. 

5
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 21, 2010, 08:42:55 PM »
Harlan, it's been a while since I checked the amps on the way up the hill, and I can't really remember.  I'll check and post when I ride it again this weekend...

6
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 21, 2010, 04:32:32 AM »
Hmmm, I guess I either have to give you my batteries or you have to give me your motor!

7
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 11:44:11 PM »
Batteries 7 (cell  logger)/ 10 (guity and 8 (cell logger)/9 (guity):

8
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 11:42:05 PM »
A couple of reasonable batteries here:

9
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 11:41:27 PM »
The worst battery is in this pair:

10
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 11:40:30 PM »
OK, today was a shorter ride of around 12 miles, but the graphs still show the hill taking its toll on batteries 4 (= guity's 13) and 7 (guity's 10) with 4/13 being the really horrible one.

11
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 09:24:24 AM »
If you take a look at the graphs, you can see that battery 20 (guity number) or 5 (cell logger number) takes a dive at every opportunity, much lower than every battery.  The biggest dive came while coming back up the hill today, but you can see there were other dives probably corresopnding with every time I accelerated hard from a stop.  You can also see that battery 24 (cell logger's 1) and 18 (cell logger's 7) sucked as well, though not as bad.  I guess it is a bit too early to jump to conclusions until I have logged the other 16 batteries as well...

But interestingly enough, you can also see that all the bad batteries, even the worst, comes back up even with the others when there isn't a heavy load.  Hence, by the time I got the bike stopped and checked the voltages, none of the batteries looked all that bad...

12
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 09:18:49 AM »
And finally guity's batteries 18 and 17, cell loggers 7 and 8...

13
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 09:17:49 AM »
OK third pair of batteries, guity's 20 and 19, cell loggers 5 and 6...

14
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 09:16:48 AM »
OK second pair of batteries...22 and 21 (according to my backward numbering system -- to the cell logger they are 3 and 4)

15
Electric Motorsport Forum / Re: guity's gpr-s experience
« on: June 20, 2010, 09:14:45 AM »
OK this will require 4 posts, in each post an attachment of a Word document with 2 graphs in the document showing the same 52-minute span of logging that includes driving back up my hill at the end of a trip to work and back.  These graphs tell a fascinating tale as far as I am able to tell...

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