Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-02-03, 11:48 AM   #1
mjw16
Senior Member
Thread Starter
 
Join Date: Aug 2002
Location: Alexandria, VA
Bikes: IRO Model 19, Surly Crosscheck, 1989 Arnie Nashbar
Posts: 1,091
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Why did my computer flip out?

All of a sudden yesterday my cycle computer decided to flip out and register approximately twice the likely speed. About 1/4 of the way into our 50 miler (after averaging about 9-10 mph in very muddy, wet conditions) it was reading 19 to 20 mph and even higher, needless to say the miles ticked away at about twice the rate they should have too. The display isn't faded nor is the a low-battery indicator flashing. Is there any reason it would have suddenly come out of calibration? Or, is it more likely that the battery is dying? Both sensors seem fine and it's always been weatherproof and reliable. It's and Echo F1 that's about 3+ years old.
mjw16 is offline   Reply With Quote
Old 06-02-03, 12:44 PM   #2
bluestreak
Newbie
 
Join Date: Jan 2003
Location: Boston
Bikes:
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you were riding in wet and muddy conditions, you could have gotten some water, mud or grime between the contacts. Try cleaning them off. If that doesn't work, it could still be a battery issue. But, hey, on the bright side, maybe you really were going that fast.
bluestreak is offline   Reply With Quote
Old 06-02-03, 01:56 PM   #3
mjw16
Senior Member
Thread Starter
 
Join Date: Aug 2002
Location: Alexandria, VA
Bikes: IRO Model 19, Surly Crosscheck, 1989 Arnie Nashbar
Posts: 1,091
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'd really like to think that I was riding that fast-it would be a boost to my ego, but unfortunately I don't think that was the case
mjw16 is offline   Reply With Quote
Old 06-02-03, 03:10 PM   #4
Inoplanetyanin
Senior Member
 
Inoplanetyanin's Avatar
 
Join Date: Apr 2003
Location: LA
Bikes: got stolen on memorial day: Schwinn Traveler (early 80s) Currently 96-97 Gazelle Medeo. It's a Dutch hybrid bike.
Posts: 715
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If all other function, excluding speed, work well as suppose to, it's not likely to be a computer itself.
Yeah, would be nice to check the sensors, and if there are still any doubts left, another cyclist with computer could roll beside you and tell his readings... to compare...
Inoplanetyanin is offline   Reply With Quote
Old 06-02-03, 09:22 PM   #5
Chris L
Every lane is a bike lane
 
Chris L's Avatar
 
Join Date: Apr 2000
Location: Gold Coast, Queensland, Australia - passionfruit capital of the universe!
Bikes:
Posts: 9,626
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A couple of months ago my computer irrationally decided to clock 95km/h on a ride one day. There's no way I was going anywhere near that speed. It only did it the once, and there was no rain involved (unfortunately).
__________________
"I am never going to flirt with idleness again" - Roy Keane
"We invite everyone to question the entire culture we take for granted." - Manic Street Preachers.
My blog.
My bike tours. Japan tour page under construction.
Chris L is offline   Reply With Quote
Old 06-02-03, 09:38 PM   #6
mechBgon
Senior Member
 
mechBgon's Avatar
 
Join Date: Jul 2002
Bikes:
Posts: 6,957
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It didn't somehow switch from mph to kph, perhaps...? That would do it If it's still misbehaving, try adjusting the relative positions of the wheel magnet and the sensor.
mechBgon is offline   Reply With Quote
Old 06-02-03, 09:51 PM   #7
aerobat
Love Me....Love My Bike!
 
aerobat's Avatar
 
Join Date: Dec 2000
Location: Winnipeg
Bikes: Bikes: Giant hybrid, Trek 4500, Cannondale R800 Some commuting 20mi/day, mostly fitness riding - 20-50 mile rides
Posts: 1,231
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Were you riding near any source of radiomagnetic waves, such as high tension lines etc?
__________________
"...perhaps the world needs a little more Canada" - Jean Chretian, 2003.
aerobat is offline   Reply With Quote
Old 06-02-03, 11:51 PM   #8
khuon
DEADBEEF
 
khuon's Avatar
 
Join Date: Aug 2002
Location: Catching his breath alongside a road near Seattle, WA USA
Bikes: 1999 K2 OzM, 2001 Aegis Aro Svelte
Posts: 12,242
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally posted by Chris L
A couple of months ago my computer irrationally decided to clock 95km/h on a ride one day. There's no way I was going anywhere near that speed. It only did it the once, and there was no rain involved (unfortunately).
That can happen if you ride over a traffic sensor...

http://www.neebu.net/~khuon/gallery/...ng/FlightyDeck
__________________
1999 K2 OzM 2001 Aegis Aro Svelte
"Be liberal in what you accept, and conservative in what you send." -- Jon Postel, RFC1122
khuon is offline   Reply With Quote
Old 06-03-03, 05:54 AM   #9
MikeR
Very Senior Member
 
MikeR's Avatar
 
Join Date: Aug 2001
Location: Central Pa
Bikes: 2000 Bianchi San Remo and a mint 1984 Trek 720
Posts: 1,762
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Whenever it gets wet out (even damp) my computer goes nuts. I tried everything to fix it. The only thing that works is on a damp or wet day I cut a clear plastic sandwich bag and tape it over the computer and around the handlebars.

Next time I have extra $ I'm going to get a new computer.
__________________
It's better to cycle through life than to drive by it.
MikeR is offline   Reply With Quote
Old 06-03-03, 06:28 AM   #10
mjw16
Senior Member
Thread Starter
 
Join Date: Aug 2002
Location: Alexandria, VA
Bikes: IRO Model 19, Surly Crosscheck, 1989 Arnie Nashbar
Posts: 1,091
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think mechBgon is onto it. I checked yesterday and the fork-mounted sensor (not the one on the wheel) seems to have been jarred loose. I re-aligned it and everything was fine on my ride into work this morning. Thing is that the sensor mounts via zip tie around the fork. As this was on another bike, it had to be cut off and rigged to the current bike. I used several zip ties but I guess the constant bumping of the C&O Canal was a little too much and it slid out of position (something it had not done on road). I'm thinking about using super glue to mount it more solidly. Any ideas?
mjw16 is offline   Reply With Quote
Old 06-03-03, 12:10 PM   #11
bugman
Senior Member
 
Join Date: Nov 2002
Location: Ontario, Canada
Bikes:
Posts: 50
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I wouldn't go with glue on the frame. A little two-sided tape, or even some non-slip rubber between the sensor and the frame should be all that is needed to help the zip-ties hold it in place.
bugman is offline   Reply With Quote
Old 06-04-03, 05:18 AM   #12
georgesnatcher
newbie newbie
 
georgesnatcher's Avatar
 
Join Date: Mar 2003
Location: Happy to be in FLORIDA
Bikes: Titanium Indy Fab 29" mtb
Posts: 633
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have had the same thing happen to me. I traced it to moisture (not rain) getting on the contacts between the mounting bracket and the computer. Once I realized what it was I wiped the contacts down before every ride. I have not had this problem since doing this.
georgesnatcher is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 06:38 PM.