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AR15.COM
7/5/2012 5:34:05 AM EDT
I'm considering replacing the fork on my bicycle and I'm trying to determine what effect it will have on handling.  Sheldon Brown (the bicycling Guru online) has a formula to determine the new fork's affect on my headtube angle.  It's a trig problem and I have no idea how to solve it.  

I've entered the relevant numbers into his forumla.  I'm guessing it will be a simple problem for a person with a calculator with trig functions   Can anyone help me out?  

Thanks!


arcsin [(390  -  403)  /  (1030)]
7/5/2012 6:21:07 AM EDT
[#1]
-0.72° if you're using degrees



-0.80° if you're using gradians


 
7/5/2012 6:31:11 AM EDT
[#2]
Quoted:
-0.72° if you're using degrees

-0.80° if you're using gradians
 


I'm interested in hearing more about this "gradian"
7/5/2012 6:32:27 AM EDT
[#3]



Quoted:



Quoted:

-0.72° if you're using degrees



-0.80° if you're using gradians

 




I'm interested in hearing more about this "gradian"


A gradian is 1/400th of a circle, where a degree is 1/360th of a circle.



 
7/5/2012 7:55:17 AM EDT
[#4]
*Radian.
7/5/2012 8:15:04 AM EDT
[#5]
Quoted:

Quoted:
Quoted:
-0.72° if you're using degrees

-0.80° if you're using gradians
 


I'm interested in hearing more about this "gradian"

A gradian is 1/400th of a circle, where a degree is 1/360th of a circle.
 

No one is disputing that but you expressed the gradian in degrees. Which is it?

7/5/2012 12:24:48 PM EDT
[#6]
Thanks!  That helps a lot!