FXDB triple trees on FXDLS....
i think they are wider too. No reason you cant do it, go for it
Former Sponsor
Joined: Apr 2007
Posts: 5,360
Likes: 453
From: Davie, FL
Raked V/S Non-Raked Trees
Putting on a straight through non raked set of trees of a FXSB that has a Rake (steering head) (deg) 29 onto your bike (FXDLS) that has a Raked (steering head) (deg) 30.5 and will increase your trail and make your cruiser handle worse in turning but better for less steering input while cruising than it does now. A simple trip to one of those on-line rake and trial calculators found on my site or many other web sites should have been your first stop to figure your rake and trail as well as seeing how this change will affect your handling. You will find the results will increase your trail. It is now up to you to figure out if you really wish to make this modification.
Club Member
Joined: Oct 2011
Posts: 11,175
Likes: 2,483
From: Nor Cal
FWIW...
The FXDLS and FXDB use the same frame (both 29°)and same fork tube length
Different Raked Trees though as you know...0° vs. 1.5° along with different steering stem offset (but same 8.5" Midglide width)
.
The FXDLS and FXDB use the same frame (both 29°)and same fork tube length
Different Raked Trees though as you know...0° vs. 1.5° along with different steering stem offset (but same 8.5" Midglide width)
.
Correct. From what I have gathered from Harley Davidson, this modification should not have have negative impact on handling.
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Grand HDF Member
Joined: Mar 2010
Posts: 3,949
Likes: 150
From: South of Mordor
I have used a few of those rake/trail web sites. I notice some take into consideration the offset from the center of the neck to the center of the legs (as in how much the legs are forward or aft of the neck) and it also plays a factor in what the trail becomes.
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Road Master
Joined: Feb 2009
Posts: 755
Likes: 223
From: Murrieta Ca.
This is RB racing's rake and trail calculator, its the one I used when playing with my chassis.
https://www.rbracing-rsr.com/advchoppercalc.html
: Mike
https://www.rbracing-rsr.com/advchoppercalc.html
: Mike
After number crunching and double checking, I should lose about an inch of trail. The FXDLS has a rake of 30.5 and a trail of 5.1". I'll drop to 29 degrees in rake and trail right at 4". That's right about what I was looking for. Lose a small amount of stability for a small gain in handling. I ride twisties more than I do freeway and do so aggressively. I'll take it. Once I get the project done, I'll post up pictures and give my thoughts. There is quite a bit that I am doing with my bike to make it "mine", with changing geometry up front the most significant.