February 26th, 2018, 06:30 PM | #1 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
GSXR 750 rear shock mod.... again
Hey I did this modification and installed [what I thought was] an 09 GSXR 750 shock. Used different dog bones to keep the stock ride height.. made a bunch of spacers so it would all bolt up.. drilled out the shock eyelet etc.
I read through quite a few different guides and DIY on the project, which were helpful. All finished and complete -- except the rear suspension is way too stiff. I have zero spring preload -- the adjusting collars are all the way on the loose side, barely compressing the spring at all. When I sit on the bike, the rear end doesn't drop more than a few millimeters. If I have a friend help me push down hard on the tail section, I can get about an inch of rear suspension compression. I'm 160lb roughly, for what it's worth. No idea what's going on. The ebay auction was for an 09 GSXR 750 rear shock, and everything I read about this pointed me toward that shock being perfect for the project. Why the hell is it so stiff? I had plans on rebuilding the shock, changing the oil, and re-charging it with nitrogen... but it seems like waaaay to high of a spring rate. Not sure what I would say if I called racetech either... can I measure the coils of the spring and the un-sprung length and identify it somehow?
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
February 26th, 2018, 06:59 PM | #2 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
Compare the leverage ratios of dog bones you used vs. factory ones.
Any binding? Remove spring, reinstall shock and verify swingarm moves smoothly. Ride height should be adjusted by changing shock length or the upper mounting point. There was guy that made an upper bushing with offset hole. Very innovative. |
|
February 26th, 2018, 08:04 PM | #3 |
Corner Chaser
Name: Thomas
Location: Eustis, FL
Join Date: Nov 2017 Motorcycle(s): 2006 GSXR1000, 1986 VFR750, 2004 Ninja 250 Posts: 89
|
If you used different dog bones, you probably change the leverage points. I did the 600 shock conversion on mine. I made collars to put on either side of the shot eye to use the factory ninja mount to keep geometry all the same. Works great.
|
|
February 27th, 2018, 02:37 PM | #4 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
I measured the links that I'm currently using. 158mm
The oem links are 165mm, according to a search. Shorter links raise the back of the bike. The shock I'm using looks exactly like the ones pictured in searches for "09 GSXR shock" -- and it has the same yellow spring. After doing some math -- and figuring that it was indeed the stock 9.5kg/mm spring, with my body weight of 165lb [75kg] -- standing on top of the spring caused it to compress by 10mm. According to my calculation -- if it were a 9.5kg/mm spring, and 75kg were applied to it, the resulting sag should be be 8mm. I measured 10mm so not sure what that means but it's supporting evidence that I do indeed have a 9.5kg spring.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
February 27th, 2018, 02:43 PM | #5 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
And yes -- I've removed the spring and reinstalled everything and run the rear tire all the way up and down by hand. [125mm travel]
No binding or sticking, everything moves freely with no spring involved. As soon as I put that dang spring in there the rear suspension is rock hard.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
February 27th, 2018, 03:35 PM | #6 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
Shorter dogbone have less leverage, so effective spring-rate at rear-wheel through linkage and swing-arm length is higher than longer dogbone. While dogbones can be used to adjust height, it's not ideal because their length is linked to effective spring-rate as well.
To adjust ride-height without affecting spring-rate or any kind of damping, you want to change upper mounting-point of shock. |
|
February 27th, 2018, 10:52 PM | #7 |
ninjette.org sage
Name: michael
Location: Central Georgia
Join Date: May 2013 Motorcycle(s): 2019 Ninja 400, Sold 2012 Ninja 650, Sold 2009 Ninja 250r, Sold 2007 DRZ400s Posts: 628
|
Mine is the same way. I have never ridden the bike since doing the shock swap, other than putting around the house. But I can tell the rear is super stiff. I weigh 180 and barely get any movement. No binding, though I did buy dog bones to raise the rear .5 inch over stock. After reading this thread makes me think my lower links are too short, stiffening the spring leverage.
Shock is from a 2006 gsxr600/750. It's a project bike that got pushed to the side for a few years. |
|
February 28th, 2018, 10:10 AM | #8 |
ninjette.org member
Name: Tedd
Location: Creston
Join Date: Dec 2017 Motorcycle(s): 11'Ninja 250r, 06 Ninja250r(Sold), 01'GSX-R750(Sold), 07'GSX-R1000(Sold), 96 GSX-R600(Sold),11' DR-400s(SOLD) Posts: 37
|
bad geometry
I was about to ride my pregen on the track a few weeks ago and I took it too the suspension guy who told me "there is nothing there" the rebound was off and the shock was not responding properly due to "incorrect geometry" (r6 rear shock) He said I would be better off using the stock shock, which I don't even have. My solution... sold it and got a newgen. Makes sense that the bike is designed for a particular shock and drilling/changing dog bones and putting a shock designed for a different chassis and bike all together alters the geometry of the bike and when that is off, the suspension won't work properly. All tho this work was done by a "pro"... It makes sense to me and he has been doing suspension for 20+ years so I take it he knew what he was talking about...
|
|
February 28th, 2018, 12:26 PM | #9 | ||
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
Quote:
For what it's worth -- the gsxr shock I have is a whopping 6mm shorter than the ninja 250 original shock. Doesn't seem like a large difference. Quote:
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
||
|
February 28th, 2018, 01:29 PM | #10 | |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
Quote:
|
|
|
February 28th, 2018, 10:41 PM | #11 | |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
Quote:
8.5k spring may still put me out of the dampening/valving sweet spot, but if I have to tear down the shock for purpose of replacing the bump stop anyways -- I could re-do the shim stack to compensate. Do you know the math on how I could calculate optimal spring rate? Racetech figured an 8.3 or 8.2 spring would be ideal, and the 8.5k spring they want to sell me is much shorter so it would give me better preload options. Best compromise. How do I calculate the optimal spring rate? Thank you very much for your help. I mean that.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
|
February 28th, 2018, 10:42 PM | #12 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
Not sure if this is relevant but maybe these measurements are a place to start..
http://www.racetech.com/download/SwingarmGeometry.pdf
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
March 1st, 2018, 10:01 AM | #13 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
The RaceTech calculations are for simple twin-shock rear-end, not our more complicated rising-rate linkage. I think we'd need to measure the knuckle's angle relative to the dogbones and use an inverse-sine function to arrive at leverage-ratio. When knuckle's parallel with 90-degrees motion to dogbones, we'd get most leverage (swingarm to shock). Then as it moves away from centre, leverage decreases more and more.
With different shock-length and spring-rate, the resting-position of the knuckle & dogbones are no longer parallel and shock has less leverage. Combined with stiff spring, this adds even more effective spring-rate at rear-wheel. I found spreadsheet with various GSXR shock options. I think you want to go with '04-05 GSXR-750 shock with longer length if you wanted to raise rear-end. And the 7.3kg/mm spring is more appropriate for a street bike with your weight. Spring of 8.4kg/mm is what you'd use on race bike. The 9.5kg/mm spring is more fitting for +200-lb rider on race bike. Last futzed with by DannoXYZ; April 5th, 2018 at 06:46 AM. |
|
March 1st, 2018, 12:55 PM | #14 |
ninjette.org guru
Name: Chris
Location: Bristol, UK
Join Date: Feb 2016 Motorcycle(s): ZZR250, VFR800 Posts: 478
|
When I swapped my swing arm I had to use shorter dog bones which had a beneficial effect of improving the spring rate which was to soft.
|
|
March 1st, 2018, 03:08 PM | #15 |
ninjette.org member
Name: john
Location: Champlin,Mn
Join Date: Sep 2016 Motorcycle(s): '00 SV650,'02 EX250,'15 EX300 Posts: 99
|
SV Spring!!??
I had my stock SV650 shock laying around and discovered the spring would fit the GSXR shock body. I posted pix of mods to spring end and retainer.
__________________________________________________
GUZZI JOHN |
|
March 1st, 2018, 04:55 PM | #16 | |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
Quote:
My original 250r shock was 323mm. The '09 750 shock is 317mm. The '04 750 shock is 332mm. Ten milimeters longer than stock. I have the original 250 linkage (164mm), and the aftermarket (152mm) linkage so I will have options to experiment with. If it's important -- the '09 GSXR shock gave me 120mm of suspension travel with the aftermarket dog bone links. 127mm of suspension travel with the 250r links. The 250r shock gave me 130mm of suspension travel with the 250r links. Never measured travel with aftermarket dog bone links and the original 250r shock. Didn't seem to have any clearance issues with anything -- the rear tire came within 3/4" of the fender when it was all the way up -- and my rear tire is pretty worn. A fresh tire would certainly be taller but I don't think it would rub the fender. I'm also running the 140 tire in the rear instead of the recommended 130 tire. And none of the suspension travel tests were done with bumpstops. None of these shocks have bumpstops. They have all rotted and fallen out. The bumpstop should come into action before the rear wheel gets that high.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
|
March 6th, 2018, 01:23 PM | #17 | |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
Quote:
Fingers crossed!
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
|
March 6th, 2018, 06:28 PM | #18 |
ninjette.org member
Name: Mauricio
Location: Mexico City
Join Date: Aug 2015 Motorcycle(s): 250R Posts: 84
|
Is the reservoir going to fit??
The table says no... |
|
March 7th, 2018, 08:23 AM | #19 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
Have to trim plastic fender liner I think.
|
|
March 7th, 2018, 11:55 AM | #20 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
I'm hoping that's what "reservoir doesn't fit" means. Mine has already been trimmed to accommodate the other GSXR shock that I currently have.
Shipped out yesterday, really looking forward to it arriving!
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
March 16th, 2018, 09:47 PM | #21 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
I finally installed the 05 GSXR shock. With the OEM links I measured 6" of suspension travel with no spring. Without a bumpstop, the rear tire came up within an inch of hitting the rear fender, which is good.
With the aftermarket 2" raise links --- surprise! They definitely seemed to raise the rear of the bike 2". I measured 4" of suspension travel, because the wheel hit the ground and I couldn't measure the full range unless I were to jack the bike up higher (which I didn't.) The rear tire only came up high enough to leave a 3" gap between the tire and the fender. Not ideal. I didn't try riding the bike with the shock/spring installed and the aftermarket links --- seemed as if it would have made the suspension way too nose-heavy with the back end too high for comfort. With the 05 GSXR shock/spring/oem-links, the ride height seemed good, the rear end was still pretty stiff, but the bike seemed to handle alright. Will post more once I have a chance to take the bike further out of the stable. A ride around the block isn't much of a true test or assessment.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
March 18th, 2018, 08:11 PM | #22 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
I've ridden 150 miles with the 05' GSXR rear shock installed. The rear end of the bike definitely feels stiff. There is zero preload on the spring, so I can't back that off.
With the OEM shock, I could hit speed bumps at 50mph and the bike would soak it right up and I wouldn't be jostled from the seat. With the 05' GSXR shock -- it I hit the same speed bumps at 50mph, I get my ass kicked up and forward out of the seat. Seems like the spring is pretty stiff. Playing with the compression/rebound dampening doesn't seem to affect this. I also raised the front forks 24mm in the clamps, which may be a factor. Might have to split the difference and try 13mm of fork above the top clamp.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
March 19th, 2018, 08:19 AM | #23 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
|
Assuming the spring rate is right for you. Your high/low speed compression is too tight sir. iirc, your shock will have both high and low speed compression adjustments. Typically, the low speed is in the center of the high speed adjust nut. 15mm or 17mm I think.
Turning either of them to the right will make the ride "harder", turning them to the left will "soften" the ride. Adjusting compression would be typically done after getting sag numbers within range and an acceptable rebound setting that is in harmony with the front. Start with sag and rebound, then go to compression. Watch some Dave Moss videos if you have no clue how to do this and/or get some experienced help. You can really muck up the readability of your bike by adjusting these settings without a clue of what you are doing and WHY you are doing it. AND.... it will cost in you tires. I could be convinced to let you know the settings on mine, but the would be most likely too hard for your liking on the street AND will most likely not be close to what you need based on the front setup.
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
|
March 19th, 2018, 08:36 AM | #24 |
CCS Amateur #501
Name: Dave
Location: Iowa
Join Date: Jun 2015 Motorcycle(s): '09 250 SE 'Booger' Posts: 406
|
Does that shock have a HS damping adjustment?
|
|
March 19th, 2018, 08:45 AM | #25 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
|
04/05 600/750 should have rebound at bottom and hi/lo comp at top. HI=big nut, LO=flathead screw in center
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
|
March 19th, 2018, 08:51 AM | #26 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
|
Tip: Many of these click. When you read others settings, they are typically in "clicks out" from full tight. The ones that don't click are measured in "complete/half turns out." Also, these are precision adjustments. NO TORQUE!!!! NO TORQUE!!!! NO TORQUE!!!!
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
|
March 19th, 2018, 09:28 AM | #27 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
Yeah, damping adjustments is new feature for Ninjette. Read the manual, and turn everything full-soft to start.
|
|
March 19th, 2018, 04:18 PM | #28 | |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
Quote:
I guess it would've had to happen anyways to replace the bump stop --- but FU<K!! Now the bike is out of commission again. And the rear shock spring rate still doesn't feel good. Way too stiff --- the bike sags about 6mm in the rear when I sit on it. That's no where near 30% of the travel (6"). It's also with the original links. GAAHHHHH!!!!
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
|
March 19th, 2018, 04:30 PM | #29 | |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
|
Quote:
Simply put, it opens and closes a valve inside the shock. Full right to close the valve completely off. With the valve fully closed, nothing can effectly move inside the shock, hence a very HARD ride. To free the shock up to move and actually let the shock do its job, turn left to loosen it. EVERYONE measures from turned to the right, FULL tight... and then counts turns/clicks "out" how loose it is. HS Damp (big nut): Start about 2 turns out LS Damp (little screw in the middle): Start about 3 turns (6 clicks) out In terms you fully understand; righty tighty (hard ride), lefty losey (softer ride) Going further; High speed damping is what you adjust for speed bumps, potholes, 2x4s and other more abrupt shock travel like super hard braking Low speed damping is for the lesser imperfections on the surface you are riding It's not really rocket science when you finally figger out what to adjust and why to adjust it.
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
|
|
March 19th, 2018, 04:31 PM | #30 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
And may be worth mentioning that when I rode the bike with the 05 shock, hitting a speed bump seemed to buck me up out of the seat and onto the handlebars --- so it seems that the original shock is now going back on the bike.
What's with the super stiff spring rate? It's not a track bike -- and even a street bike is supposed to have ~30% sag in the rear. All of these shocks (09/05) seem waaaay to stiff. The 09 was a 9.1k spring I believe, and this 05 is a 7.3kg yet both are rock hard.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
March 19th, 2018, 04:34 PM | #31 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
Dangit you replied to my post before I edited it.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
March 19th, 2018, 04:35 PM | #32 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
I threaded the big nut in and out again and it's still leaking oil and tiny bubbles of compressed gas. Looks like i buggered the o-ring and now it does need to be rebuilt.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
March 19th, 2018, 07:44 PM | #33 | |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
|
Quote:
It don't matter what the spring rate is if the valves inside the shock are closed. The shock will be all locked up and not want to move, so it will be a hard ride and hitting a speed bump will have your bottom off the seat. Get the o-ring fixed and have the shock serviced, it might be cheaper to just buy another. :\ Next, find the 05 gsxr specs for that shock and return it to factory settings on the adjusters. Next, use the preload to achieve sag numbers. If you can't hit the sag numbers, then that is not the spring for you. Then move to rebound, then h/l damping. What is with the rock hard spring and settings on these shocks? Simple... they are designed and made for machines that can accelerate harder, brake harder and corner harder than a 250. So the shock is more rigid.
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
|
|
March 20th, 2018, 09:08 PM | #34 |
ninjette.org certified postwhore
Name: TC
Location: Hawaii
Join Date: Sep 2013 Motorcycle(s): A lot. Posts: A lot.
|
Thank you for the kinds words and keen insight!
I really doubt that I had both of the shocks set to full hard dampening, but that would explain the absolute stiffness. As stated, the 05 GSXR 750 shock seems to have lost pressure and oil so it's compromised and no longer good for use until a rebuild takes place. Spent a half hour on the phone with jake at racetech today.. great guy and very helpful. I think the 09 GSXR 750 shock is my best option -- I'll swap it back onto the bike when I have a minute and play with the dampening settings. Again -- I seriously doubt that I had it locked out at full stiffness but I need to rule that out before I can continue with this. Sounds like a lighter spring is my best option. Along with a shock rebuild/installing-bumpstop, and maybe messing with the shim stack or gold valve doohickey to wrangle the dampening closer to where it should be for such a light bike. Thanks again, I'll post back once I get that 09 GSXR 750 shock back in there. Race tech may have been mistaken, but he told me that there are substantially lighter spring rates available for that shock. My understanding is primitive, but as far as I know ---- I should have roughly 30% sag. Certainly didn't see that with either GSXR 750 shock. 5% sag at the most, with zero preload on the spring.
__________________________________________________
Just batshit crazy. All his posts are endless diatribes. Some are actually entertaining but mostly batshit crazy. |
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Ohlins gsxr rear shock | subxero | Motorcycle-related | 24 | December 1st, 2017 07:12 AM |
08 09 gsxr 600 750 rear shock suspension spring coilover | ninja2007 | Motorcycle-related | 0 | February 3rd, 2015 12:54 PM |
Suzuki GSXR 600/750 Shock Install | Lemonfresh | 2008 - 2012 Ninja 250R Tech Talk | 10 | August 21st, 2014 08:42 AM |
FS : GSXR shock mod -- Complete | abhijitz | Motorcycle-related | 7 | June 25th, 2013 09:01 PM |
F/S: GSXR REAR SHOCK MOD + hardware | Nemesis | Motorcycle-related | 4 | February 10th, 2012 04:12 PM |
|
|