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View Full Version : stick shake errors may be due to bad cabling




segboy
07-23-2003, 06:01 PM
A couple of months ago I ran into some consistant stick shake and die problems. It got to the point where it was happening every few feet. The problem occured when going off the slightest of bumps and when one tire would drop before the other. Coming off a slight sidewalk bump with both wheels at the same time seemed ok. I called LLC and they suggested that I removed the shaft and disconnet the black and yellow connectors, wait a minute then reconnected them. The problem continued. Next I was asked to rotate the batteries. Front to back and back to front (note that I removed the shaft to flip the base). That seemed to fix the problem for a while then yesterday is starting happening again.

I was asked by LLC to make note of the display if it should happen again. Once I felt the stick shake and the beeps I looked down and noticed that the top and bottom bar were missing and the wrench icon appeard while blinking red. There was no specific battery level in each instance. It happened regardless of my charge status.

I removed my shaft once more to check the yellow and black connectors, they looked tight. I disconnected them, waited a minute the reconnected them. A few seconds later I heard the bee-bee-beep indicating power. I then reconntected the shaft to the base and proceeded to extend the shaft to get it square. That's when I heard another bee-bee-beep. Huh... I tightened the shaft and tried starting my Segway with a key.. nothing. Did one of the cables come loose? I took the shaft off again and everything was fine. For good measure I disconneted the connectors then reconnected them. I got the bee-bee-beep but this time extended the shaft without it being inserted to the base. I wanted to see if extending the cables cause the connectors to come loose. Sure enough I heard the bee-bee-beep again.

I then disconnected the connectors then lowered the shaft. I pulled on the cabling inside the shaft only to find that the cabling was twisted. So twisted that I held the shaft upside down whilst holding on to the connectors and whatched as the shaft spun for about a minute unwinding itself. I used my hands to straighten the cabling as best as I could and reconneted the connectors. I heard the bee-bee-beep, extended my shaft and this time it didn't shut down.

I started up my Segway and purposely road hard trying to get my Segway to quit and couldn't. I called Segway to report the incident. They mentioned that they have had other calls about cables getting pinched. Why the cables were so twisted is still a mystery. They are now shipping shafts with less cabling to prevent the problem. I was told that if it happened again that they would ship me a new shaft. I can't tell you how impressed I am with Segway's support. If only other companies would learn from them.

On a side note, I can't express how awefull it was to glide thinking that I could go into stick shake and die mode at anytime. No longer was I having fun, instead I was constantly worried about my Segway crapping out on me. Getting to the bottom of a problem and gliding with confidence is a great feeling. And yes.. I'm knocking on wood.

Sorry for the long winded story...

Segboy



http://www.konasegway.com
"Failure Is Not An Option!" Apollo 13




toybuilder
07-24-2003, 04:05 AM
Yeah, I agree - having a freaked out platform is not fun. It is, however, reassuring that the redundant system does its darndest to keep you safely balanced when there is a fault.


http://www.pasadenasegway.org/
A bicycle in 1897 cost $25 ($2,200 today adjusted for inflation).
A Ford Model-T cost $850 in 1908 ($75,000 today adjusted for inflation).
(Can anyone point me to historical prices of horses?)

BenBethel
07-24-2003, 01:40 PM
great explanation - thanks for the info!

www.benbethel.com