September 14th, 2010, 01:30 PM | #1 |
ninjette.org sage
Name: Howard
Location: Cypress, So. Cal.
Join Date: Feb 2009 Motorcycle(s): '09 Candy Thunder Blue Ninja 250R Posts: 618
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Other Compatible Forks?
I remember not too long ago a member on this forum switched to a 'busa front end. And this kind of sparked my interest.
So, as the title states I am curious to see which front ends on other bikes are compatible with the 250. More specifically, I would like to switch to inverted forks for cheap. This is because I went to a local bike junk yard with a lot of crashed bikes and some had forks/front ends still in good condition. So if anyone could let me know the specs or has any knowledge on this subject please help me out! |
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September 15th, 2010, 04:07 PM | #2 |
2012 is here,let's ride!!
Name: dex
Location: visalia,ca.
Join Date: Sep 2009 Motorcycle(s): 2009R,'12 suzuki +500 Posts: 354
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i think the guys that can help will be the members from thailand.i am interested to find out too
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September 17th, 2010, 12:39 AM | #3 |
CVMA / AFM / M1GP #250
Name: Steve
Location: Los Angeles
Join Date: Sep 2009 Motorcycle(s): 2009 Ninja 250r, 2011 Zero S, 2009 KLR 650 Posts: A lot.
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you can fit nearly any other types of forks onto the ninja if you are willing to do a little custom work for the tube that goes through the head. Nearly all the forks have the same design, you'd just need to adapt the head tube that goes into the head bearings to fit your upper and lower triple clamps, and maybe make custom spacers to go on each side of the head tube.
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September 18th, 2010, 03:57 PM | #4 |
ninjette.org certified postwhore
Name: Bob
Location: CA
Join Date: Dec 2008 Motorcycle(s): '08 Ninja 250r, '14 CBR500r Posts: A lot.
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Interesting idea...
BTW: Can someone explain if there is an actual advantage to the upside-down fork design found on most of the other [more $$] bikes, other than looks???? |
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September 18th, 2010, 06:52 PM | #5 |
ninjette.org dude
Name: 1 guess :-)
Location: SF Bay Area
Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much.
Blog Entries: 7
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The two main benefits of USD forks are that they are stiffer in the tripletree to provide better control, and there is less unsprung weight as the smaller lower legs are lighter. Less unsprung weight means the suspension can be tuned better across the board, but helps the most for high-speed damping.
But whether those theoretical advantages become actual benefits on streetbikes, it's certainly up for debate. Some great handling bikes continue to use conventional forks happily, but for all-out sportbikes, it's a hard sell if they don't have the now ubiquitous USD design.
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September 18th, 2010, 08:05 PM | #6 |
ninjette.org certified postwhore
Name: Bob
Location: CA
Join Date: Dec 2008 Motorcycle(s): '08 Ninja 250r, '14 CBR500r Posts: A lot.
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Thanks for the explaination Alex. I assume we don't have them due to cost?
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September 18th, 2010, 10:19 PM | #7 | |
ninjette.org member
Name: Bob
Location: Centreville va
Join Date: Sep 2010 Motorcycle(s): 1991 EX500 , 2009 250r Posts: 130
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Quote:
Now whether or not you're average street rider can push the ninja hard enough to tweak a frame is the real question. That I've never heard a definitive answer to. But as pointed out, the real logic flow chart revolves around cost. Even if you plan on keeping the ninja for a while, how much do you want to sink into the bike? UDS forks require you to get the whole front end. So probably $4-500. New springs and valve emulators, $250ish. Difference in performance, negligible. Springs and emulators also are lighter than USD's with double rotors most of the time, and less weight = better performance Bob |
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