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Forewarned said:
SC1 compound at 25psi off the warmers, I'll get you the sag and clickers later, but Dave did the initial base settings on the sag and I haven't changed it. I'm guessing somewhere around 25mm.
Click to expand...
Not much issue with pressures but on Pirellis your TARGET hot pressure off track is 25 PSI so I would drop to 23.5 hot off the warmer. If your rider sag is 25 mm that means your bike sag is 7-10 mm.

You need more sag.....10-15 bike and 30 mm rider.

I also need your compression and rebound settings please....
 
roadracerx said:
Not much issue with pressures but on Pirellis your TARGET hot pressure off track is 25 PSI so I would drop to 23.5 hot off the warmer. If your rider sag is 25 mm that means your bike sag is 7-10 mm.

You need more sag.....10-15 bike and 30 mm rider.

I also need your compression and rebound settings please....
Click to expand...

Compression is 13 out from closed
Rebound is 10 out from closed
 
@roadracerx
Howdy, do you have a baseline or starting point for me to use on my 2020V4s pani?

210lbs in gear
I run Rosso Corsa 4s (and some older 2's i got a year ago)

what sag, static and dynamic do you recommend front and back?

thanks,
JAG
 
roadracerx said:
@Forewarned OPEN the rebound to 14
Click to expand...

For my understanding, how would this help pumping? Not trying to contradict or confuse but wouldn’t opening the rebound let the shock and wheel move more? Are you trying to get better swingarm angle and therefore better anti-squat?

Trying to understand the physics of this as I’ve had this happen on previous bikes and couldn’t sort it out.
 
SirJAG said:
@roadracerx
Howdy, do you have a baseline or starting point for me to use on my 2020V4s pani?

210lbs in gear
I run Rosso Corsa 4s (and some older 2's i got a year ago)

what sag, static and dynamic do you recommend front and back?

thanks,
JAG
Click to expand...

did some digging read this whole damn thread again!

so, shooting for the following
2020 V4S
Front: stock springs = 10.0 try to get 40mm sag (rider), 25-30mm sag (bike)
Rear: stock springs = 85n, try to get 30mm sag (rider), 10-15mm sag (bike)

If i have 0-5mm bike sag with 30mm rider sag, need softer spring in rear

Preload adjusts sag.
remove all comp and rebound, then set sag using preload.

then use these settings once sag is set
Fr Comp = 8
Fr reb = 10
Rear comp = 10
rear reb = 14

do i have this correctly?
 
SirJAG said:
did some digging read this whole damn thread again!

so, shooting for the following
2020 V4S
Front: stock springs = 10.0 try to get 40mm sag (rider), 25-30mm sag (bike)
Rear: stock springs = 85n, try to get 30mm sag (rider), 10-15mm sag (bike)

If i have 0-5mm bike sag with 30mm rider sag, need softer spring in rear

Preload adjusts sag.
remove all comp and rebound, then set sag using preload.

then use these settings once sag is set
Fr Comp = 8
Fr reb = 10
Rear comp = 10
rear reb = 14

do i have this correctly?
Click to expand...

the first sag number is free length wheels off the ground even the rear shock top out stretched…
then bike on ground
then bike and rider

sag numbers for road will be softer than the track more bumps ..
I think you have your numbers a bit squib there
 
Last edited:
So for track ie suspension less travel as there are less bumps I would want my forks to have compressed down 35-40mm from the free length with the bike on the ground and me on it
Same principle for the rear free length then the total sag of 25-30 me on bike on ground
 
in between free length and me on the bike numbers is the bike on its own. you need around 10-15..( of the total sag number to be just bike) As a general set up.
 
Screenshot 2024-10-17 at 19.16.44.png
 
these are a good thing as you want to utilise all of the suspension travel

You can also just use a cable tie around the fork leg. It will show how much of the suspension travel you are using... within reason if you are no where near using the full travel you can take a turn of pre load out if its bottoming out then add some. If you have done the sag procedure correctly then it won't be bottoming out.
Of course you can get into the nuance of individual track where you are breaking heavy at one location so you set the sag for that but that make is over sprung for the rest of the lap.....everything is a compromise.

Screenshot 2024-10-17 at 19.19.01.png
 
so the front springs are 10.0, and the rear on 2020 is 85.

I guess i need to buy a 100n rear since i'm in the 200-210ish range with gear on track.

just got my ohlins adjusters in this week...will get going soon
 
SirJAG said:
so the front springs are 10.0, and the rear on 2020 is 85.

I guess i need to buy a 100n rear since i'm in the 200-210ish range with gear on track.

just got my ohlins adjusters in this week...will get going soon
Click to expand...

Go back and find the 22 revision chassis changes. If memory serves me well 5mm up both ends (CG change), softer rear spring, so more rear preload (but I thought they went to an 85), and the SA pivot change. The first time I flipped the bike up on the front stand I realized how much more weight they're getting on the front relative to the twins. So don't change the rear spring yet (try it) particular if you can hit your sag numbers. Since the fronts loaded up more than the twins the trail everyone seems to gravitate to is about 98mm. I think going to the 22 CG helps and when you raise both ends at once you get a little more anti-squat.
 
He could retro fit the v4 R pivot stuff to his bike that would at the maximum get it to the 22base std position but the pivot mounting in the crankcases are lower than 22 on
 
not going the "make like the 22" route...i will just try to get my sag setup as is..and see where i am at...i am thinking the 85n (stock rear on 2020) will be too light...i guess we will all find out together!

JAG
 
baggerman said:
Go back and find the 22 revision chassis changes. If memory serves me well 5mm up both ends (CG change), softer rear spring, so more rear preload (but I thought they went to an 85), and the SA pivot change. The first time I flipped the bike up on the front stand I realized how much more weight they're getting on the front relative to the twins. So don't change the rear spring yet (try it) particular if you can hit your sag numbers. Since the fronts loaded up more than the twins the trail everyone seems to gravitate to is about 98mm. I think going to the 22 CG helps and when you raise both ends at once you get a little more anti-squat.
Click to expand...
That was 2020. 2022 saw changes to the tank shape and the front forks.

IMG_0457.png
 
roadracerx said:
Not much issue with pressures but on Pirellis your TARGET hot pressure off track is 25 PSI so I would drop to 23.5 hot off the warmer. If your rider sag is 25 mm that means your bike sag is 7-10 mm.

You need more sag.....10-15 bike and 30 mm rider.

I also need your compression and rebound settings please....
Click to expand...

I measured my sag, I have 22mm static sag and 47mm rider sag. (No gear) 95 spring
 
Last edited:
andyb said:
And that’s no good to him as the SA pivot is differe
Click to expand...

bp_SFV4 said:
That was 2020. 2022 saw changes to the tank shape and the front forks.

View attachment 57253
Click to expand...

OK. Thanks. So he has a 20 so this is already incorporated. Good as those were meaningful changes. None of those changes ever made it into the SF's. Absolutely need the CG up and a bunch of other stuff in the SF.
 
SirJAG said:
did some digging read this whole damn thread again!

so, shooting for the following
2020 V4S
Front: stock springs = 10.0 try to get 40mm sag (rider), 25-30mm sag (bike)
Rear: stock springs = 85n, try to get 30mm sag (rider), 10-15mm sag (bike)

If i have 0-5mm bike sag with 30mm rider sag, need softer spring in rear

Preload adjusts sag.
remove all comp and rebound, then set sag using preload.

then use these settings once sag is set
Fr Comp = 8
Fr reb = 10
Rear comp = 10
rear reb = 14

do i have this correctly?
Click to expand...
I'd start fork reb/comp at 12 and shock comp at 13.
 

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