calculating sidecut radius? - Snowboarding Forum - Snowboard Enthusiast Forums
SnowboardingForum.com is the premier Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 01-12-2009, 10:54 PM   #1 (permalink)
(O..O)
Guest
 
Posts: n/a
Default calculating sidecut radius?

hey,

If specs are unavailable for a board, how do you calculate the sidecut radius yourself?

I have an idea, but it may not be the same way board makers do it.

(I tried searching the forums, if this is a repeat - sorry)
  Reply With Quote
Sponsored Links
Advertisement
 
Old 01-13-2009, 05:00 AM   #2 (permalink)
-LIFETIME MEMBER-
 
legallyillegal's Avatar
 
Join Date: Oct 2008
Location: fuck Snowboarding
Posts: 4,475
Default

__________________
THERE ARE SPECIFIC REASONS AS TO WHY I AM MORE LOCAL THAN YOU

GOD IS DONUT
legallyillegal is offline   Reply With Quote
Old 01-13-2009, 03:55 PM   #3 (permalink)
(O..O)
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by legallyillegal View Post
Hey L.I.

Thanks for the reply. (that's the Lib Tech Zucchini, right ? lol)

Thing I'm trying to do is get the exact number. I know the math is possible if you messure 1: the straight line distance between where the side cut starts and ends; 2: the depth of the side cut.

I'm just wondering is there an easy formula people already use?
  Reply With Quote
Old 01-13-2009, 04:54 PM   #4 (permalink)
Senior Member
 
Join Date: Nov 2008
Location: Portland, OR
Posts: 139
Default

the formula isn't easy.

m=depth of side cut
R=radius
c=straight line distance from where the cut starts and stops

R^2 - 2*R*M -M^2 = R^2 - (c/2)^2
If you assume M^2 is small when compared to the other quantities this reduces to

R=c^2/(8*M)

Hope this helps.
kingkoajmr is offline   Reply With Quote
Old 01-13-2009, 05:00 PM   #5 (permalink)
Senior Member
 
Join Date: Nov 2008
Location: Portland, OR
Posts: 139
Default

or just tell me M & C and I'll draw it up in CADD and make the computer do the calculating
kingkoajmr is offline   Reply With Quote
Old 01-13-2009, 05:41 PM   #6 (permalink)
(O..O)
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by kingkoajmr View Post
the formula isn't easy.

m=depth of side cut
R=radius
c=straight line distance from where the cut starts and stops

R^2 - 2*R*M -M^2 = R^2 - (c/2)^2
If you assume M^2 is small when compared to the other quantities this reduces to

R=c^2/(8*M)

Hope this helps.
m=1"
c=39"



R=190" or 4.83 m

is that right? sounds pretty tight?
  Reply With Quote
Old 01-13-2009, 06:00 PM   #7 (permalink)
Senior Member
 
Join Date: Nov 2008
Location: Portland, OR
Posts: 139
Default

Quote:
Originally Posted by (O..O) View Post
m=1"
c=39"



R=190" or 4.83 m

is that right? sounds pretty tight?
The math is correct. As far as if that is actually the radius of the side cut I have no idea. I'm a much better engineer than I am a snowboarder.
kingkoajmr is offline   Reply With Quote
Old 01-13-2009, 06:04 PM   #8 (permalink)
(O..O)
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by kingkoajmr View Post
The math is correct. As far as if that is actually the radius of the side cut I have no idea. I'm a much better engineer than I am a snowboarder.
Well thanks gazillion!!

You helped out big time. Just as a test, I'll measure another board and see if I get close to the factory specs...

have a good eve
  Reply With Quote
Old 01-13-2009, 09:22 PM   #9 (permalink)
(O..O)
Guest
 
Posts: n/a
Default

oops I wrote down 39" instead of 49" . Everything seems fine. Thanks again
  Reply With Quote
Reply

Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 08:18 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2
VerticalSports
Baseball Forum Golf Forum Boxing Forum Snowmobile Forum
Basketball Forum Soccer Forum MMA Forum PWC Forum
Football Forum Cricket Forum Wrestling Forum ATV Forum
Hockey Forum Volleyball Forum Paintball Forum Snowboarding Forum
Tennis Forum Rugby Forums Lacrosse Forum Skiing Forums