SBK Fork Spring Rates

[Speeddog]

In addition to what I said before....

I'd call GP and ask 'em what they think.

[csorin]

Heard back from GP Suspension.  Dave offered the same advice as here, which is to just mount them and give them a go.  He also stated that they were running a .95 spring.  So If .90 is ideal according to Traxxion, I think I might be alright with the slightly stiffer ride.

I'm in a little bit of a conundrum at the moment as far as triples go.  It's either pay $70 to get them bored, or save up a couple hundred and just get a Speedymoto triple.  I'm starting to sway towards the later.  Seems like less of a hassle, and the result will look great.

I've been able to scrounge up some Speedymoto clip-on mounts for $75, and just ordered replacement bars for $50.  So the clip-ons are taken care of at about half the price of new.  Stoked that this project is costing much less than anticipated.  The triple is going to be the major purchase in all this.

[EEL]

YMMV but be forewarned. I just installed a pair of monster S4 springs onto my S2R 800 and they were a lower spring rate than what you have. I weight 175 / 180 and have what should be a heavier bike. I had to back the preload out to all but one line visible on the preload adjuster just to get the proper sag values.

I think you're going to be unplesantly surprised at the stiffness. Mine was spec'd at .86. Just remember to budget some extra money for some springs in case you need em.

[He Man]

.90 is on the stifferside of right for a monster. i was 160lbs no gear when i got my mosnter springs swapped for .85 and agan on my end it is the stiffer side of things.

[ducpainter]

lots of room for personal taste on this one.

stiffer is better than weak when it comes to springs.

[csorin]

Stiffer would be a welcome change.  The wallowing over bumpy turns, while sometimes exhilarating, is getting old.  I look forward to feeling the difference these springs will bring.

[cobrajet]

I recently put 2000 or so 748 SBK forks on my 06 800 S2R. Backed out the preload about 4 rings, compression and rebound a couple for good measure and fork are still on the stiff side, a little out of balance with the mushy rear stocker. That said still a huge improvement, gone are the wallowy turns and bottoming in chuck holes. Well worth the effort. Have also noticed a glut of SBK forks on ebay @ $200 or less. I was charged $30 (gave $40) for the the triple bore and found SS .5mm stock in hopper at work so way too cheap for a great mod. I'm 170 lbs gearless but always ride with about 20 lbs in my backpack. Will probably go a little lighter in front but definetly heavier in rear.  bill

[csorin]

The rear is going to have to wait.  The Penske sport shock has my eye.

My only remaining concern is the install.  Do I need to lower my headlight and gauges to make this work?  I'm worried that I'll get the triple bored, the clip-ons placed, and then not be able to run the brake lines with the stock headlight placement.  I'm using Speedymoto clip-ons (not the tall boys).  Any experience with this is much appreciated. 

[cobrajet]

I ended up flopping the custer out of the way and removing the headlight bucket assembly to get the job done.  bill

[caperix]

The rear is going to have to wait.  The Penske sport shock has my eye.

My only remaining concern is the install.  Do I need to lower my headlight and gauges to make this work?  I'm worried that I'll get the triple bored, the clip-ons placed, and then not be able to run the brake lines with the stock headlight placement.  I'm using Speedymoto clip-ons (not the tall boys).  Any experience with this is much appreciated. 

Are you running the clip-one above or below the tripple?  I have Woodcraft 3" rise clip-ons mounted below a speedy moto tripple. The speedy moto has a few more inches space below than the stock.  I was able to keep the stock lines with just reclocking the lines with the stock headlight & gauge mounting.

[csorin]

I'll be running the clip-ons below the triple.  For now, I plan on using the stock triple. 

If the Speedymoto triple gives me more room and saves me the need to lower the headlamp, I'd rather get the aftermarket triple ($287) than spend money on lowering the headlamp and gauges ($70 for boring the stock triple, $87 for modifying bracket). 

[cobrajet]

On my S2R I'm still running my stock bars.  I set the ammount of tube above the triple based on the overall length difference between the SBK and OEM forks, about an inch. With  the preload out 4 rings the compression adjuster is just about touching the underside of the bars.

[csorin]

Thanks Cobra, but a big part of this project is moving to clip-ons. 

Has anyone run ~1 inch rise clip-ons below a Speedymoto Triple with stock headlight placement and stock coffin reservoirs?

[csorin]

Hey guys,

Was told part of my answer from another forum member, B.  It looks like I need the following part to get the reservoirs to clear the clip-on collars:

http://www.monsterparts.com/pc/ADAP/Clutch-Brakes/ADAP.html

Now my only concern is the headlight bracket ears at their stock height interfering with the brake lines.

[The Mad King Pepe']

+1 on those spacers, you need 'em.

when I work around that area I remove the headlight (2 screws and a connector) since it makes it easier for me to move stuff around.

there are easy (and cheap!) ways of lowering the headlamp and gauges. I ordered these clamps, set them at the height I prefer and bolted the headlight on.