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Old 02-22-2010, 09:12 AM   #1
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Joined: Sep 2004
From: Seattle, WA
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I Ride: ZX-10R
Question inverted front forks?
I know inverted forks look cooler, but what other pro's and con's are there?

Not every motorcycle has inverted front forks, so what are the advantages?

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Old 02-22-2010, 09:17 AM   #2
Peg Dragger
 
Joined: Nov 2009
From: yelm wa

I Ride: 05 r6 ravin
dont know but would like to

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Old 02-22-2010, 09:19 AM   #3
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Joined: May 2009
From: Camas, WA

I Ride: slow!
Less unsprung weight = more responsive/better handling.

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Old 02-22-2010, 09:19 AM   #4
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Joined: Mar 2007
From: Monroe-mish, WA
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I Ride: 07 YZ450F, 74 XL350
the way I understand it, the one of the benefits is less mass to move up and down...

also, it's the new hawtness, so you have to have them or you're a noob.

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Old 02-22-2010, 09:21 AM   #5
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Joined: May 2008
From: South Salem Oregon

I Ride: Aprilia Tuono, Ducati GT1000, Moto Guzzi Centauro, Bimota DB4, Yamaha FJR1300
I seem to have more seal problems with inverted forks.
Not horrible but it seems more often than with "standard" forks.
Maybe a marginal seal will start leaking sooner.
Easier to get rock chips on the tubes.

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Old 02-22-2010, 09:28 AM   #6
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Joined: Feb 2007
From: Seattle

I Ride: All kinds
All forks (conventional or inverted) have larger diameter outer tubes, and smaller diameter sliding tubes. I'm fairly certain the main benefit of installing them on a motorcycle with the sliding tubes at the bottom is it allows the larger diameter tubes to be held in place by the triple clamps. By clamping the larger or "stronger" tubes the entire assembly is stiffer with less deflection over bumps, turning, braking, landing wheelies, etc.

What do I win?

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Old 02-22-2010, 09:53 AM   #7
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Joined: Aug 2007
From: medford, OR.

I Ride: 06 R1/ 06 CRF450R and single moms!
less unsprung weight and the forks flex less at the triple clamps

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Old 02-22-2010, 09:53 AM   #8
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I Ride: for my daily recommended allowance of vitamin B12
I'm pretty sure the primary advantage is, as stated above, less unsprung weight. This allows the fork to respond better to irregularities in the road surface keeping the tire on the ground better.

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Old 02-22-2010, 09:58 AM   #9
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Joined: Sep 2008
From: Vancouver, WA

I Ride: ... , '81 Yamaha XS400, 1987 Yamaha FZR1000,...
“ Quote:
Originally Posted by Red Label Moto View Post
All forks (conventional or inverted) have larger diameter outer tubes, and smaller diameter sliding tubes. I'm fairly certain the main benefit of installing them on a motorcycle with the sliding tubes at the bottom is it allows the larger diameter tubes to be held in place by the triple clamps. By clamping the larger or "stronger" tubes the entire assembly is stiffer with less deflection over bumps, turning, braking, landing wheelies, etc.

What do I win?
Ding! Ding! Ding!...You win an all expense paid trip to your kitchen! Grab yourself a beer!

That is the main advantage of inverted forks.

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Old 02-22-2010, 10:41 AM   #10
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Joined: Jan 2009
From: Vancouver, WA
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I Ride: Shotgun
Since I'm in no danger of wading them up in a stoppie or of running down the Track Lizards anytime soon.....I'm not too worried about trying to look the part either.

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Old 02-22-2010, 11:45 AM   #11
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Joined: Feb 2005
From: West Richland

I Ride: Pitster Motard
The main benefit of inverted forks?

The fork bushings are dramatically further apart inside inverted forks making them much more stable. What alot of riders feel as "less flex" may be slightly less actual tube flex, but more importantly, less slop between the upper tube position and lower tube position. Bushings also last longer.

At least, that is how it was explained to me when I attended a Race Tech / GMD Computrac seminar.

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Old 02-22-2010, 05:31 PM   #12
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Joined: Apr 2009
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I Ride: for my daily recommended allowance of vitamin B12
Hmmm... I kinda like it when a thread turns into a learning experience.

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Old 02-22-2010, 06:46 PM   #13
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Joined: Mar 2006
From: spokane, wa

I Ride: 2013 Gasgas 300xc w/lic plate + 1985 RZ350 + 2010 YZ250F +
Inverting your forks make them stiffer, like this site makes me.

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Old 02-22-2010, 06:48 PM   #14
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Joined: Jun 2008
From: God's Country (Oregon)

I Ride: Slow and Steady...
“ Quote:
Originally Posted by fastfoodfred View Post
Inverting your forks make them stiffer, like this site makes me.
Well put!

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Old 02-22-2010, 06:50 PM   #15
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Joined: Apr 2008
From: beachside in Santa Cruz, CA

I Ride: white & nerdy
“ Quote:
Originally Posted by fastfoodfred View Post
Inverting your forks make them stiffer, like this site makes me.
This is PNWR record, 12 posts before we headed off into the weeds....

All the reasons I've heard have been noted, less flex, less weight, plus, if the racers use them, they MUST be good!

Flexy forks on a flexy bike with 30 HP can be very exciting!

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Old 02-22-2010, 07:01 PM   #16
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Joined: May 2007
From: Keizer,Ore

I Ride: 12 Wee-strom Adventure
Thanks for in the info...Good question.

Way to go Beans....There you go making this forum useful and informative! LOL

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Old 02-22-2010, 07:06 PM   #17
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Joined: Dec 2007
From: Bellingham

I Ride: 04RC51-05600RR-05DRZ400sm
“ Quote:
Originally Posted by Red Label Moto View Post
All forks (conventional or inverted) have larger diameter outer tubes, and smaller diameter sliding tubes. I'm fairly certain the main benefit of installing them on a motorcycle with the sliding tubes at the bottom is it allows the larger diameter tubes to be held in place by the triple clamps. By clamping the larger or "stronger" tubes the entire assembly is stiffer with less deflection over bumps, turning, braking, landing wheelies, etc.

What do I win?
thats exactly correct

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Old 02-22-2010, 11:49 PM   #18
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“ Quote:
Originally Posted by monster4570 View Post
hmmm... I kinda like it when a thread turns into a learning experience.

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forks, front, inverted, suspension


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