Thorn Cycling Forums
May 24, 2013, 07:37:23 PM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Please use the password reminder here. Enter your username and then check your registered email, you'll find the instruction how to reset your password
 
   Home   Help Search Login Register  
Pages: [1]
  Print  
Author Topic: Computer fitting to BROMPTON?  (Read 914 times)
0 Members and 1 Guest are viewing this topic.
john28july
Guest
« on: April 23, 2007, 10:41:13 AM »

HELP!
I have a Brompton which has 16" (349) wheel size. I also have a new Sigma Computer which is fitted and is working very well.
However it has not been correctly set up for the Brompton wheel size!.
Please can someone tell me the correct input figure for this size wheel for the SIGMA computer?
I may be slightly mathematically challenged here as I can setup computers for bigger wheel bikes OK. Its just this size. By the way it is a FOUR figure number required.
John.
www.pbase.com/john28july
« Last Edit: April 23, 2007, 10:44:20 AM by john28july » Logged
stutho
Administrator
Sr. Member
******
Offline Offline

Gender: Male
Posts: 855



« Reply #1 on: April 23, 2007, 11:11:07 AM »

What ISO tyre size are you using John?
Logged
stutho
Administrator
Sr. Member
******
Offline Offline

Gender: Male
Posts: 855



« Reply #2 on: April 23, 2007, 11:57:55 AM »

And the magic number is... 1335

I've calculated this number but I would expect it to be accurate. (Better than 2%)
Logged
stutho
Administrator
Sr. Member
******
Offline Offline

Gender: Male
Posts: 855



« Reply #3 on: April 23, 2007, 12:26:09 PM »

[Smiley]1335 is within 0.3% of 1330 and I suspect my figure is the more accurate one!!

NB conversion for miles is 1.609 therefor for miles the figure you need is 0830


« Last Edit: April 23, 2007, 12:30:47 PM by stutho » Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.424 seconds with 19 queries.