Raising links clarification / Handling

dcnblues

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I am so so glad I found out about raising links. I was all over the forums when I had my gen 1, but somehow missed the benefits and the concept. I'm sad about the extra handling I missed with that bike but I am ecstatic over the handling I've found on my new gen 3.

I suspect there may be others out there we just aren't interested in turning their busa into a drag bike and so they don't read threads about lowering links and so miss out on raising the rear. That's probably what happened to me. As well, there are a couple of issues which confused the hell out of me, so even though there are a number of threads on this topic for the Gen 1 and Gen 2 (which are mostly valid for the Gen 3 as well), I thought I would clarify some stuff for new owners who aren't familiar with the concept.

-Gen 2 and gen 3 suspension links are equivalent. I think Gen one as well but I'm not positive. What you read and what you buy will be compatible with your gen 3.
-***Links which raise the rear are SHORTER!!! The triangular geometry of the suspension is counterintuitive, so when you hear people talk about lowering the bike, they are putting in longer link bars, and vice versa. Nobody says this outright (even the web page descriptions of the parts!?!?) so I was confused for a long time.
-***This is probably because a majority of the time raising links are referred to as +1". So this refers to a shorter bar that raises the rear 1 in. The problem is that the height the bike is raised depends on how far away from the swing arm pivot you measure. So different setups and taking measurements from different locations will give different raising results. Conventionally the measurements are from the license plate to the ground, but license plates can be anywhere on the rear. Your mileage may vary in other words.
-Removing the stock bolts and nuts can be difficult. 1) Lots of torque involved so it's a good idea to secure the front of the bike or the front wheel before you begin. 2) Don't try to turn the bolt. Do loosen the nut first, not the bolt. 3) Go ahead and do that either while the bike is on the ground and the suspension loaded, or after you have partially jacked the bike up just enough to unload the suspension. 4) But it's not recommended to fully lift the rear so the swing arm is hanging down. You want it in the middle so the tire is taking some weight but not a lot. 5) you're looking to have the swing arm balanced so that matching the bolt to the new link and sliding the bolt in and out is easy. (Lots of confusing information on other posts and threads).
-There are a ton of different opinions on the results of raising the rear an inch, and I'm going to give some specific numbers below, but essentially this change will be a small and not a large difference. The change will not be radical, the change will not be dangerous or off-putting.
-There's some debate about the Hayabusa deliberately being designed either for sport or touring, but the simplest way to look at it is that Suzuki wanted the Hayabusa to be stable at high speed. So the geometry of the design leaned definitely towards the conservative. Raising the rear simply corrects the motorcycle back to the GSXR side of the equation. It handles, gloriously, much more like a 600 when modded with raising links. I'll say it again: I love love love the way it handles now!
-Don't worry about losing stability; I have neither myself felt nor read about any concern in this area. You'll be able to take your hands off the bars even at low speeds the same as you did before without noticing any loss of tracking ability. Think of it as moving the suspension from overly stable back to Mid stable. For sure there are a million track bikes far more Twitchy than a Hayabusa with raising links. I've also read the opinion that if you raise the rear you need to upgrade the steering damper, but I discount that. If you can feel your steering damper, you're doing it wrong.
-You will need to adjust your chain. You probably won't need to add or lose a link, but worst case scenario it's possible. Not that big a deal.
*I am still confused about getting the nose up. I've read that it makes it harder to wheelie. But that doesn't seem right, and what I've read is conflicting. Let others who know more than me go ahead and comment.
 
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Okay, stock link info:
Stock links (3.7oz / 104.8gm) / (118.7mm / 4.67") center to center
*Take my numbers with a grain of salt. It's hard to measure Center to Center, some data I got from the manufacturer or the internet and can't swear to, Etc

Stock links.jpg
 
Then I put on these HEAVY but adjustable raising links. (I honestly don't know if these are the exact same units that Soupy's sells as lowering links. I didn't measure how much you could expand / lengthen them. It's possible and even likely you could Max shorten these for the twisties, then Max expand them to lower the bike past stock for a trip to the drag strip. I'm not sure).
*You also can't just fully shorten them. You need to leave enough slack to use the tightening nuts.
Soupy's adjustable raising links (1lb 3oz / 538.6gm) set to 105mm (13.7mm shorter) > raised tip of stock mudguard 1 3/4"

Soupy's adjustable raising.jpg


Soupy's adjustable V stock.jpg
 
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I thought that using the adjustable links at maximum would be too much, and that I would need to tune the height of the bike downwards. Bzz, wrong! I love the handling with my license plate one and three quarter inch higher than it used to be! They are however, 5x heavier than the stock links. So I bought these Schnitz units which are just slightly longer than the soupy's shortened to the max. So the bike will lose a little height but I like the weight savings better.
*Bonus as the web page has a crappy picture and doesn't show that these are highly polished Billet aluminum and engraved with 'Hayabusa' on them! They're beautiful and only 45 bucks!
Don't have them on yet, so I'm guessing at how much they will raise the bike.
Schnitz billet (3.3 oz / 93.5 grams) / 111mm / 4.37") center to center / 7.7mm shorter = 24.7mm (.97") higher?

SRL 01.jpg


SRL 02.jpg
 
Some comments mostly from this forum that I copied into my notes. Don't have the sources, sorry:

The install was not bad, and I am happy with the results. Measured at the aft-most location on my bike, the bottom of the license plate, I saw a 1.25 inch increase in height. I am 5'11" tall and have no issue standing with the bike. The change to performance is not drastic, but is noticeable.
Don't forget the chain adjustment; it will change quite a bit with the links installed.
Break the torque with the bike on its wheels (weight on rear unloads the linkage). Then lift it up and remove the bolts.
You need to break the bolts loose from the nut end...don't even try to turn the bolt...just bust the nut loose!
-Rear raise / This reduces trail, steering head angle (steeper) and, due to an increased deflection angle of the swingarm, the wheelbase slightly. This increased deflection also leads to a changed reaction to the drive forces and thus the spring behavior. The center of gravity is higher.
Pluses: Easier turn-in, better handling, less rear suspension sag under acceleration. More ground clearance. Heavier load on the front wheel, therefore less lift at high speeds and possibly better driving stability in fast corners despite the shorter steering geometry.
Minuses: Less grip when accelerating, nervous straight-line stability, wobbly cornering, restless braking (rear wheel lifts off earlier). Uncomfortable sitting position on the road due to an increased load on the arms
Yeah I forgot to mention the seat will be higher, (which personally I liked) but you will have a little more weight on your hands and arms. I guess there had to be one single downside...
 
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As well, when I replace the rear with a taller profile I'm going to get a small additional bump in height.
190/50 > 190/55 = 10mm higher (according to Dunlop)
 
Thanks for all the informations, I purchased the Schnitz too, but I will get them at Christmas only, not before. Can't wait to get all the benefits you described
 
I have gone back and forth over getting the fatter rear, but ultimately what decided me was the wider the tire, the greater the lean angle required through a turn. Counterintuitive. So I'm sticking with a 190...
Hi! Did you really feel a difference between stock 190 and a 200 ?
 
On the Gen one I did. But I was younger than and was really moving my ass over and off the seat in the twisties. To be honest I was missing the benefits of the Fat Tire because I was miserly and was keeping the pressure up in the high 30s to save tire wear. Pushing it through the turns was so delicate with that over-inflated tire it was way more stressful than it needed to be. Once I accepted the tires should be 33 to 35 PSI cold, and learned not to care if they were worn out at 2,000 miles, the grip became so much better that your speed increases right back up to that stressful place. But I think now with the 190 I can maintain a quite fast but not overly stressful pace mostly leaving my ass in place and just moving my upper body down into the upcoming turn off and pulling the bike after me.

Should you really get the pace up to where your safety margin is under 10%, you do need to get your ass off the seat. But the benefit is that now you can move your body weight forward on the inside of the bike enough so (if you are balanced enough on the pegs to NOT put weight on the handlebars and let the front tire choose its own angle at the Apex), that you can feel you have equalized the pressure on the front and rear suspension. And that's a magical feeling. Pretty much like landing a jump on a bicycle or dirt bike simultaneously on the front and rear and having your vehicle effortlessly absorb the hit. You're letting the bike do its intended purpose and function perfectly without interfering. It's the fastest and smoothest way through a turn. Groove and Flow, and the Hayabusa is a GSX-R baby!
 
Ok, how TF do you install these with the stock exhaust? I fought with it for two hours yesterday and I can not get the bottom bolt out. Yes I tried removing the sleeve as well but it just hits the exhaust on the other side. I do NOT want to pay the dealer to put this in. If I could've gotten that bottom bolt out it would've been a 15min job.
 
I got a tip from someone on a Gen3 facebook group. All you have to do is remove the bolt on the bracket where it attaches to the frame and that allows you to swing it down and back far enough to remove the lower bolt.
 
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Ok, how TF do you install these with the stock exhaust? I fought with it for two hours yesterday and I can not get the bottom bolt out. Yes I tried removing the sleeve as well but it just hits the exhaust on the other side. I do NOT want to pay the dealer to put this in. If I could've gotten that bottom bolt out it would've been a 15min job.
Sorry I already had the Yosh four into one AT2 on the bike. It was honestly pretty painless, especially once I understood that you need to jack up the bike only enough to take weight off the linkage. * I did forget to Loctite the nuts, and will have to remedy that one of these days.
 
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