Question about Blackburn 4.0 Bike Computer

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What number do I put in for wheel size 700x23 on a blackburn atom 4 cycle computer

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You don't want to guess. Every tire varies from the nominal size to some extent. Measure one wheel revolution on the ground in millimeters and use that number. With 4-digit accuracy it seems silly to ballpark the measurement.

Posted on Apr 04, 2011

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I have misplaced my manual for my Blackburn sl 3.0. I am looking for the wheel size chart


Try searching for a cateye manual online - wheel sizes don't depend on which computer you have! Alternatively, use a measuring tape to measure a roll-out using the tyre valve to measure exactly one revolution.

Oct 15, 2013 | Blackburn Atom Sl 3.0

1 Answer

My sl 3.0 no longer picks up the signal from sensor so speed/ride time no longer work. I have changed all batteries and checked sensor area for mud/debris etc. the unit is less than twelve months old. The...


Its probably because the computer has lost the ID nuber. It happens every time when U change the batteries or re-setup the wheel size.
It happend with me and it took a long time to figure it out.
So try theese steps out:
1: check the ID number: (hold the right (mode) button for 5 seconds till "ID" is written on the screen) - if there is no number shown thats a good sign.
2. press the reset button on the remote (before make sure that the magnet is placed close enough and it is passes right true in the center of the battery cap of the remot) so RIGHT MAGNET POSITIONING IS ESENTIAL
3. after pressing RESET spin the wheel aproximatly for one minute.

If that is the problem it should pick up the sign.

Ps. A stronger magnet might also help.

Good luck.

Oct 12, 2013 | Blackburn Atom Sl 3.0

1 Answer

After 250 miles of working perfectly my S.L5.0 is not detecting speed,please help


Here is the manual: http://www.blackburndesign.com/blackburn/wp-content/themes/blackburn//manuals/cyclometers/atom_SL_3.0_5.0_6.0.pdf
If you cant find an answer, you can contact them at:
http://www.blackburndesign.com/customer-service/blackburn/contact-us

Mar 26, 2013 | Blackburn Atom SL 5.0

1 Answer

Hi there, I have just purchased a Blackburn Atom 4.0 Cyclometer and I am setting it up. What should be put in for the 5-digit Odometer setting ? Many thanks, Pete


It's for recording or apending whatever mileage base you already have so it will indicate your accumulated mileage. It's up to you.

Apr 03, 2011 | Blackburn 4.0 Bike Computer

2 Answers

Need an online manual for Blackburn Atom 2.0 bicycle odometer computer.


For some reason the ydon't have a download for the manual at the Blackburn site.

Give this a try, as they probably settled on some basic constants in their design.

http://blackburndesign.com/manuals/Blackburn_2_3.pdf

Or call them up...

Questions? Comments? Need a rebuild kit? We're listening.
Mail:
Blackburn Customer Service
Bell Sports, Inc.
735 Pacesetter Drive
Rantoul, IL 61866
Phone:
(800) 456-2355
(217) 893-9300
8am-5pm Central Time

mailto:helpdesk@blackburndesign.com

Jan 16, 2011 | Blackburn 2.0 Bike Computer

1 Answer

I'm looking for the manual for the 2010 Blackburn Atom 4.0 Computer - where can I find it?


I'd expect to find it listed here at the Blackburn site.

http://www.blackburndesign.com/support.html#pdf_manuals

but it isn't.

Their phone numbers are:
(800) 456-2355
(217) 893-9300
8am-5pm Central Time

Call and ask.

Aug 19, 2010 | Blackburn 4.0 Bike Computer

1 Answer

Blackburn atom 4.0 does not read speed


The magnet has to interrupt the pickup and the transmitter communicates it to the computer, so settings are irrelevant for basic function.

Take the computer off its mount and hold it closer to the transmitter to see if that helps.Then take the magnet off the wheel and wave it by the pcikup to see if that helps.

If neither works, consider that weak batteries in either unit can cause it to fail. Some units also have a minimum and maximum distance within which they'll work.

Jul 07, 2010 | Blackburn 4.0 Bike Computer

1 Answer

My blackburn 4.0 has new battery and is giving me MPH way higher than possible. What's up?


You need to adjust the diameter size of your wheels into the speedometer.
it probably is now set at a to small diameter.

Jul 10, 2009 | Blackburn 4.0 Bike Computer

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