ADVrider

Go Back   ADVrider > Bikes > Trials
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-08-2009, 05:09 PM   #1
kwisn OP
One Happy Dog
 
kwisn's Avatar
 
Joined: May 2008
Location: Griffonderosa Dog Ranch
Oddometer: 8,252
TrialsTires and How They Work

http://vimeo.com/2783843?pg=transcod...ed&sec=2783843



Maybe someone could get their 5 year old to imbed this for me.
__________________
kwisn
kwisn is offline   Reply With Quote
Old 09-08-2009, 05:21 PM   #2
10K
Trail Runner
 
10K's Avatar
 
Joined: Sep 2004
Location: Arizona
Oddometer: 755
GooGoo GaaGaa[IMG]

2-Ply Radial Trials Tire demo from 2Ply on Vimeo.

[/IMG]
10K is online now   Reply With Quote
Old 09-08-2009, 06:59 PM   #3
kwisn OP
One Happy Dog
 
kwisn's Avatar
 
Joined: May 2008
Location: Griffonderosa Dog Ranch
Oddometer: 8,252
Thanks.
__________________
kwisn
kwisn is offline   Reply With Quote
Old 09-08-2009, 08:20 PM   #4
jjustj
JUSTAGUYTRYING2STAYDRY
 
jjustj's Avatar
 
Joined: Jun 2005
Location: 9157 ft Dillon CO
Oddometer: 5,268
so simple, yet shows why i dont use knobbies

on my 450 exc, wish they would do the same ride and vid witha knobbie! lol
__________________
Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime. Mark Twain
RIDE STEALTH,



http://www.advrider.com/forums/showthread.php?t=348508
http://www.advrider.com/forums/showthread.php?t=489958 Sunday worship, a strap-on, and Does this water taste funny?
jjustj is offline   Reply With Quote
Old 09-08-2009, 09:23 PM   #5
motomotard
Adventurer
 
motomotard's Avatar
 
Joined: Jun 2009
Oddometer: 91
very cool
motomotard is offline   Reply With Quote
Old 09-09-2009, 09:18 AM   #6
kwisn OP
One Happy Dog
 
kwisn's Avatar
 
Joined: May 2008
Location: Griffonderosa Dog Ranch
Oddometer: 8,252
"I made this video clip a couple years ago when there was a lot of mis-information about how a trials tire worked and what PSI to use. This might be useful to you at some point.

The key point that people keep missing is that this is a RADIAL PLY tire and the real work is done by the tire body. The knobs just add some edges for a little more bite, but it’s the flex of the tire that matches the shape of the ground that does most of the work. The spaces between the knobs are calculated to give just enough room for the knobs to close as the tire conforms to objects. You can see how this works in the video. When you spin this tire, the tread can no longer match the shape of the ground, but do a quick dip in the power and the tire will “hook up” again.

Pumping the tire up above 6 PSI stiffens the body and makes the tire more “round” with a much smaller foot print and then overworks the knobs. At 3 to 6 PSI, the knobs and tire body work together. Guys that pump this tire up to 10 PSI or more and then do burn-outs are missing the point completely.

I have some more training videos on this site that we have been using to help new people to the sport get a good start with some of the most important fundamentals. I’m not sure if this link will show my other clips or not. If not, you can let me know and I can direct you to them if you are interested.

Later,
Curt Long "

Copied from an email sent to me from the trails/recreation manager for the Entiat Ranger District out of the Okonagan and Wenatchee National Forest. Great guy, Randy. Thanks!
__________________
kwisn

kwisn screwed with this post 09-09-2009 at 09:24 AM
kwisn is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
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 On

Forum Jump


Times are GMT -7.   It's 04:55 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014