Subject: Re: .wheelbase/wobbles
Author: Gln-@aol.com
Date: Apr 25, 2003, 10:36 AM
Post ID: 1712756247
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John
I have one of these top triple clamps in my parts collection. What this does
is increase then rake which decreases the trail. The trail is whats makes
the bike stable. With a side car it has the effect of making the steering
very heavy. When you decrease the trail it lightens the steering. The best
example is the BMW /2 which has two pivot points on the earles fork. When
you move it to the forward position it moves the wheel forward in relation to
the center of the steering head/pivot point of the forks. Easy example of
this is put a larger tire on the front of a bike and you can notice how the
steering stiffens up. You have effectively increased the trail by moving the
front end up and out while the tire contact point has in effect moved further
behind the pivot point of the steering head. Get a book that shows this
stuff and look at it a while and it is easier to understand.
Garry in Oregon
| Date: Wed, 23 Apr 2003 11:09:45 -0600 From: "Willcox, John" <John.W-@TIMET.com> Subject: RE: Newby....wheelbase/wobbles Barry broadcast:
WOW!! I've been looking for one of those for years, and have pretty much given up on finding one. Instead, I plan to have my existing triple trees modified for more trail. According to what I've read (Greg Field's book I believe, maybe Guzziology), this sidecar front- end WAS available for the Ambos way back then. If this bike really has that option and is running a hack, consider yourself blessed. It would really make a difference in ease of steering... john in Denver |
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<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">John<BR>
<BR>
I have one of these top triple clamps in my parts collection. What this does is increase then rake which decreases the trail. The trail is whats makes the bike stable. With a side car it has the effect of making the steering very heavy. When you decrease the trail it lightens the steering. The best example is the BMW /2 which has two pivot points on the earles fork. When you move it to the forward position it moves the wheel forward in relation to the center of the steering head/pivot point of the forks. Easy example of this is put a larger tire on the front of a bike and you can notice how the steering stiffens up. You have effectively increased the trail by moving the front end up and out while the tire contact point has in effect moved further behind the pivot point of the steering head. Get a book that shows this stuff and look at it a while and it is easier to understand.<BR>
<BR>
Garry in Oregon<BR>
<BR>
<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Date: Wed, 23 Apr 2003 11:09:45 -0600<BR>
From: "Willcox, John" <John.W-@TIMET.com><BR>
Subject: RE: Newby....wheelbase/wobbles<BR>
<BR>
<BR>
<BR>
Barry broadcast:<BR>
<BR>
|
<BR>
WOW!! I've been looking for one of those for years, and have pretty<BR>
much given up on finding one. Instead, I plan to have my existing<BR>
triple trees modified for more trail. According to what I've read<BR>
(Greg Field's book I believe, maybe Guzziology), this sidecar front-<BR>
end WAS available for the Ambos way back then. If this bike really<BR>
has that option and is running a hack, consider yourself blessed. It<BR>
would really make a difference in ease of steering...<BR>
<BR>
john in Denver<BR>
</BLOCKQUOTE><BR>
<BR>
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