3 degree rake
Tourer
Joined: Feb 2008
Posts: 258
Likes: 2
From: Millington NJ
This mitt help you
http://www.rbracing-rsr.com/advchoppercalc.html
Your front suspension geometry is defined by the following six variables which are defined as:
http://www.rbracing-rsr.com/advchoppercalc.html
Your front suspension geometry is defined by the following six variables which are defined as:
- Offset-- Centerline of top of steering neck to centerline of top of fork tubes.
- Rake-- The angle in degrees of the steering neck from the vertical.
- Fork Length-- The distance between the top of the fork tubes to the centerline of the axle.
- Diameter of the front tire.
- Trail: Distance defined by vertical line from axle to ground and intersect of centerline of steering neck and ground.
- Raked Triple Trees-- In order to bring trail figures back into line, triple trees with raked steering stems can be used. Expressed in degrees. Usually adjustable in 3, 5, and 7 degrees of rake.
- Calculations Tire Diameter:
-
- Tire Diameter Formula: If you do not know a certain tire diameter use the following formula:
- Diam Inches = Rim Diam Inches + [ (2 x Aspect Ratio x Section Width) / 25.4]
- Example: 200/55R18 Tire:
- 26.7" = 18 + [(2 x 0.55 x 200)/25.4]
Last edited by Lennyone; Jan 20, 2011 at 06:02 PM. Reason: more information
Ultimate HDF Member
Joined: May 2008
Posts: 6,642
Likes: 48
From: Ogden, UT
It is only a 1 degree difference from your stock WG trees, I doubt you will have any real difference, the calculator show no change in wheelbase. Although you can see a difference between the pre-06 WG and post 06 WG, the 06 model gained 2 degrees in the neck over pre-06 models. Both have 2 degrees in the trees though.
Ultimate HDF Member
Joined: Jun 2007
Posts: 9,193
Likes: 494
From: Richmond, VA
Yes, Wide Glide's have raked trees from the factory as do Low Riders. Wide Glides have 2-ish degree trees and Low Riders have close to 1 1/2 degree trees. Going with 3 degree trees on a Wide Glide will add very little, but it will be noticeable. 5 degrees would kick it out nicely but your trail would drop down to between 1 and 2 inches. High speed stability would suffer.
Ultimate HDF Member
Joined: May 2008
Posts: 6,642
Likes: 48
From: Ogden, UT
Yes, Wide Glide's have raked trees from the factory as do Low Riders. Wide Glides have 2-ish degree trees and Low Riders have close to 1 1/2 degree trees. Going with 3 degree trees on a Wide Glide will add very little, but it will be noticeable. 5 degrees would kick it out nicely but your trail would drop down to between 1 and 2 inches. High speed stability would suffer.
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From: KC
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Last edited by reded; Jan 21, 2011 at 07:38 PM.
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Road Master
Joined: Sep 2007
Posts: 821
Likes: 1
From: In the wind
Ok I called my indy who worked as a harley mech for many years. I asked him if the stock trees have any rake in them and he said Harley does not make any trees with any rake in them. All the rake in my wideglide is in the neck of the frame. Which is part of what makes it a wideglide. This is all I can say on the subject but I do trust my indy. Since I am about to dump a ton of money on a new front end I better since the new front end will be zero degree trees and stock length forks. I am also adding a new headlight and new bars. I am putting drag bars with the turn signals frenched into them.