Raked tree cups?
Cruiser
Joined: Jan 2012
Posts: 160
Likes: 1
From: Dubai
Having this ****ling thought that it cant be that hard to compute how much a bike drops with a 3% rake. Something to do with math, a gentleman called Pythagoras and a triangle with one corner of 90%. Probably something every fifth grader can do but I don't recall anymore. Too long ago. Any bright fifth graders around?
Cruiser
Joined: Feb 2009
Posts: 172
Likes: 0
From: Cottonwood,Ca.
Mine dropped the front 2", so I bought 2" longer fork tubes but havent installed them yet. also has a 1" drop in the back and it rides the same as before the worl.. And the lock on the neck will not work with this mod... I have some pictures posted on here, just look at my profile......
Cruiser
Joined: Jan 2012
Posts: 160
Likes: 1
From: Dubai
Ah, many thanks. I just looked at the pics at your profile. Yes, that makes sense, you can also compensate by fork tubes. Had not thought of that, so good tip. Now I'll wait for a reply from Vulcan, dont want to order the wrong part.
Tourer
Joined: Jul 2008
Posts: 267
Likes: 4
From: Western Australia
It's not just the drop from the rake it's also a drop from having the cup on top of the neck which effectively moves your tubes up. The cups I used for the streetbob would be exactly the same for fatbob.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,419
Likes: 6,366
From: Honah Lee
Just round off my values on my rough drave. 3 degrees turns out to be a lot. Would drop mine apx. 2 5/16 or so.
Last edited by Jackie Paper; Sep 14, 2018 at 11:24 AM.
Cruiser
Joined: Aug 2008
Posts: 191
Likes: 0
From: Danville, KY
Question regarding cups with raked trees
I been considering a little more rake and using 3 degree cups. But so far the 2 vendors i talked to said I can't use cups if I have raked trees. Does anyone know the technical reason why they won't work?
Thanks
Thanks
Tourer
Joined: Jul 2008
Posts: 267
Likes: 4
From: Western Australia
Mate I've heard before they don't have good correspondence but I know when I ordered I got the part shortly after.
I had 2 degree trees and 3 degree cups seemed to work ok.
I had 2 degree trees and 3 degree cups seemed to work ok.
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Cruiser
Joined: Jan 2012
Posts: 160
Likes: 1
From: Dubai
How does one actually measure whether a bike is level? I guess you do it under load, with the rider sitting on it. But how would you measure it exactly?
