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

Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old 11-01-2012, 10:29 AM   #26
louder, louder, louder!
Roadracer_Al's Avatar
Joined: Aug 2007
Location: Oakland, CA
Oddometer: 1,689
Impressive project, and impressive spirit you have, sir. Not much scares me, but the loss of the use of limbs is one thing that does. You've made it clear that one can still participate in the things one is passionate about.

Given that you fabricated your own LL front suspension, this is probably something you know already, and also, I'm writing without going back to refer to construction photos.... anyway, here goes nothing:

There are two factors which affect the anti-dive/pro-dive characteristics of the front end.

First, is how the brake force is fed into the chassis. If the brake caliper is attached to the live element (i.e. the swingarm of the LLF, i.e. unsprung portion) it will have a tendency to extend the suspension (i.e. make it feel stiffer with less dive). If the braking force can be fed directly to the sprung part of the chassis via a link, it will prevent the "binding" feeling when the brakes are applied. Clearly, this only has an effect when the brakes are applied.

Second is the relationship between the axle and pivot. If the axle is below the pivot, it will have anti-dive tendencies, making it feel stiffer. If the axle is above the pivot, it will have pro-dive tendencies, making it feel plusher at the cost of more-easily bottoming. Many LLF had multiple pivot locations to change the behavior. The more above or below the pivot, the more pronounced the behavior.
When they say Harleys are for 1%ers, I don't think they mean guys who sell crank and get in bar fights any more.
Roadracer_Al is offline   Reply With Quote


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 08:26 AM.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2015