ZX6R rear shock *sorta* howto - Page 2

InvisiBill · December 14th, 2015, 04:41 AM

For anyone just now seeing this, the stock NewGen spring is 9.3kg/mm, good for a 209-218lb rider based on RaceTech's calculator. RT breaks the ZX-6R into '05-'06 and '07-'08 (not '06-'07), with 9.7kg/mm and 9.2kg/mm springs respectively, good for 230-240lb and 204-213lb.

The shock is definitely more advanced, but the spring isn't that much different for all the work involved in fitting it. The GSXR shock swap seems to give about the same results with less work and staying closer to stock suspension geometry (though it's still not perfect).

HoneyBadgerRy · December 14th, 2015, 07:10 AM

Quote:

Originally Posted by InvisiBill

The GSXR shock swap seems to give about the same results with less work and staying closer to stock suspension geometry (though it's still not perfect).

But who wants the stock suspension geometry?

choneofakind · December 14th, 2015, 07:54 AM

^^^^ ummm most of us should. It's a four bar linkage system. As you change the length of the dogbones to raise/lower the tail, you're changing the position vs velocity of the wheel as it travels through it's arc, thereby requiring a different damping profile from your shock.

So if you're already getting an aftermarket shock that's intended to to be adjustable for length, then you're fine because it's likely had this accounted for with it's valving. But if you're using stock, you're taking concessions in the designed damping feeling by raising/lowering. Is it big enough to notice? minimally. Is it big enough to worry about that you'd want to give up the faster turn in from a higher tail? Nah.

Just food for thought.
https://en.wikipedia.org/wiki/Four-bar_linkage

For how cheap these bikes are, they work damn well in stock form. They have their flaws, but they're still more than most owners will ever use.

HoneyBadgerRy · December 14th, 2015, 08:00 AM

Quote:

Originally Posted by choneofakind

^^^^ ummm most of us should. It's a four bar linkage system. As you change the length of the dogbones to raise/lower the tail, you're changing the position vs velocity of the wheel as it travels through it's arc, thereby requiring a different damping profile from your shock.

So if you're already getting an aftermarket shock that's intended to to be adjustable for length, then you're fine because it's likely had this accounted for with it's valving. But if you're using stock, you're taking concessions in the designed damping feeling by raising/lowering. Is it big enough to notice? minimally. Is it big enough to worry about that you'd want to give up the faster turn in from a higher tail? Nah.

Just food for thought.
https://en.wikipedia.org/wiki/Four-bar_linkage

For how cheap these bikes are, they work damn well in stock form. They have their flaws, but they're still more than most owners will ever use.

With the longer shock and longer dogbones it will raise the rear end a little (depends on how much longer your dogbones are) and it will change the leverage of the shock. It should make the valving and spring less effective at the beginning of the stroke and more effective at the end of the stroke. Its not for everyone, but personally its a change that I like. The spring is still a little stiff, but I probably have something softer of the shelf that I'll swap out later.

choneofakind · December 14th, 2015, 08:10 AM

yes... thank you for typing back something I just typed.

Quote:

Originally Posted by HoneyBadgerRy

Its not for everyone

Quote:

Originally Posted by HoneyBadgerRy

But who wants the stock suspension geometry?

Make up your mind.

Somchai · December 14th, 2015, 06:29 PM

Quote:

Originally Posted by HoneyBadgerRy

But who wants the stock suspension geometry?

I absolute don't like it, the stock suspension geometry is for commuter with the 300 is much more of this than the 2-fiddy

HoneyBadgerRy · December 14th, 2015, 08:18 PM

Quote:

Originally Posted by Somchai

I absolute don't like it, the stock suspension geometry is for commuter with the 300 is much more of this than the 2-fiddy

TheDuck · July 29th, 2017, 07:15 AM

Quote:

Originally Posted by HoneyBadgerRy

@TheDuck do you have a yotube channel?

A little late for the reply, but yes, I have several of them.

https://www.youtube.com/user/DuckmanCycles

https://www.youtube.com/user/vvtheduckvv

https://www.youtube.com/user/skeetertheduck

December 14th, 2015, 04:41 AM	#41
InvisiBill EX500 full of EX250 parts Name: Bill Location: Grand Rapids-ish, MI Join Date: Jul 2012 Motorcycle(s): '18 Ninja 400 • '09 Ninja 500R (selling) • '98 VFR800 (project) • '85 Vulcan VN700 (sold) Posts: A lot. Blog Entries: 1 MOTM - Aug '15	For anyone just now seeing this, the stock NewGen spring is 9.3kg/mm, good for a 209-218lb rider based on RaceTech's calculator. RT breaks the ZX-6R into '05-'06 and '07-'08 (not '06-'07), with 9.7kg/mm and 9.2kg/mm springs respectively, good for 230-240lb and 204-213lb. The shock is definitely more advanced, but the spring isn't that much different for all the work involved in fitting it. The GSXR shock swap seems to give about the same results with less work and staying closer to stock suspension geometry (though it's still not perfect). __________________________________________________ * Unregistered, I'm not your mom and I'm not paying for your parts, so do whatever you want with your own bike. *

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December 14th, 2015, 07:54 AM	#43
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	^^^^ ummm most of us should. It's a four bar linkage system. As you change the length of the dogbones to raise/lower the tail, you're changing the position vs velocity of the wheel as it travels through it's arc, thereby requiring a different damping profile from your shock. So if you're already getting an aftermarket shock that's intended to to be adjustable for length, then you're fine because it's likely had this accounted for with it's valving. But if you're using stock, you're taking concessions in the designed damping feeling by raising/lowering. Is it big enough to notice? minimally. Is it big enough to worry about that you'd want to give up the faster turn in from a higher tail? Nah. Just food for thought. https://en.wikipedia.org/wiki/Four-bar_linkage For how cheap these bikes are, they work damn well in stock form. They have their flaws, but they're still more than most owners will ever use.