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


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-06-08, 08:04 PM   #1
Gil Elvgren
(1914-1980)
Thread Starter
 
Gil Elvgren's Avatar
 
Join Date: Oct 2008
Location: Northwest Ohio, USA
Bikes:
Posts: 26
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
VDO 3DS Computer Magnet Sensor

I have tried a search on this topic but keep getting a HTTP Status 500 error so I will ask the question.

I am having trouble getting the main trip computer to work on a VDO 3 Wireless Computer w/Cadence. The wireless Cadence works fine, but the main trip computer either does not start counting or stops/starts counting mid-ride. I have replaced all three batteries. I know the VDO 3 has a 45 second data interfence delay update but the computer stops counting for minutes or the duration of the ride. I have used a feeler gauge to set the magnet 4mm distance from the sensor and it still does not pick it up.

Will replacing the magnet with a stronger magnet such as the Sigma Sport Power Magnet help?

Thanks, Gil
Gil Elvgren is offline   Reply With Quote
Old 11-06-08, 08:07 PM   #2
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 29,122
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 180 Post(s)
Narrow the gap between the magnet and the pickup switch and see if that helps.
HillRider is offline   Reply With Quote
Old 11-06-08, 09:17 PM   #3
JTGraphics
Senior Member
 
JTGraphics's Avatar
 
Join Date: Dec 2006
Location: So Cal
Bikes:
Posts: 2,673
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes you can use a stronger magnet if you like it can't heart that's for sure but do get it as close as possible and re-sink it remove batteries and start over. I have 3 of these units on different bikes and all work great. Make sure the magnet lined up and passes were the groove is also on the pickup.
__________________
It may not be fancy but it gets me were I need to go.
http://www.jtgraphics.net/cyclist_bicycles.htm
JTGraphics is offline   Reply With Quote
Old 11-07-08, 06:56 AM   #4
Rogue Leader
Senior Member
 
Join Date: Jan 2008
Location: Merrick, NY
Bikes: 2009 Mercier Galaxy (custom build), 2008 Argon 18 Mercury
Posts: 822
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had problems with my first C3DS and had to have it replaced by VDO. That said, I have mine almost touching, maybe 1mm away and it works fine, I would try that. Also you have the sensor on the non drive side right?
Rogue Leader is offline   Reply With Quote
Old 11-07-08, 08:27 AM   #5
Gil Elvgren
(1914-1980)
Thread Starter
 
Gil Elvgren's Avatar
 
Join Date: Oct 2008
Location: Northwest Ohio, USA
Bikes:
Posts: 26
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes, sensor is on non-drive side. I will reset DIGI connection and position sensor and magnet to 1mm. If that does not do the trick, I will order a Sigma Sport Power Magnet or buy a Neodymium (rare earth) magnet.

Thanks for the replies.

Gil
Gil Elvgren is offline   Reply With Quote
Old 11-07-08, 04:07 PM   #6
RonH
Life is good
 
RonH's Avatar
 
Join Date: Jan 2001
Location: Not far from the Withlacoochee Trail. 🚴🏻
Bikes: 2001 Litespeed Tuscany and 2014 Cannondale SuperSix EVO Hi-Mod
Posts: 16,666
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 178 Post(s)
Is the magnet aligned with the sensor -- centered and not above or below the sensor? Try sliding the magnet up or down the spoke a few millimeters.
__________________


The LORD is merciful and gracious, slow to anger, and plenteous in mercy. - Psalm 103:8
RonH is offline   Reply With Quote
Old 11-07-08, 09:11 PM   #7
z415
Senior Member
 
z415's Avatar
 
Join Date: Apr 2006
Location: Gainesville/Tampa, FL
Bikes: Trek 1000, two mtbs and working on a fixie for commuting.
Posts: 2,343
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
+1 on the Sigma mag.
z415 is offline   Reply With Quote
Old 11-08-08, 06:41 PM   #8
rmfnla
Senior Member
 
rmfnla's Avatar
 
Join Date: May 2005
Location: La La Land (We love it!)
Bikes: Gilmour road, Curtlo road; both steel (of course)
Posts: 6,276
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 236 Post(s)
Quote:
Originally Posted by Rogue Leader View Post
I had problems with my first C3DS and had to have it replaced by VDO. That said, I have mine almost touching, maybe 1mm away and it works fine, I would try that. Also you have the sensor on the non drive side right?
I had the same problem; some early production units were faulty.

Contact VDO and they will have you read the numbers off your unit. If it is one of the bad ones they will send you a new one, no questions asked.
__________________
Today, I believe my jurisdiction ends here...
rmfnla is offline   Reply With Quote
Old 11-12-08, 02:44 AM   #9
Chris_W
Gear Combo Guru
 
Chris_W's Avatar
 
Join Date: May 2007
Location: Switzerland
Bikes: road, commuter/tourer, hardtail MTB, touring tandem, cargo, folder
Posts: 2,253
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
I had the same make and model computer. I was having a lot of similar issues with it, plus batteries were dying extremely quickly. After a year, I finally gave up on it, and got a better unit from Ciclosport with altitude, gradient, and temperature (great for riding in the Swiss mountains like I do a lot), which I love and has given me zero problems. I still have the VDO, maybe I should contact them to get it replaced and put that on another bike. However, my confidence in them is now pretty low.
Chris_W 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 01:26 PM.