Posts
9
Joined
5/19/2026
Location
Grass Valley, CA
US
Hi!
I made a free website that helps people set up/tune/work on suspension. Any feedback would be very appreciated. If you notice any weird outputs or have suggestions, please let me know. If you could use the print-out feature on the site to copy/paste ur setup along with any issues, that would be super helpful.
Thank you!
https://mtbsuspensioncalculator.org/
Poll
Came out pretty close. You might allow an input for factory recommended front and rear sag. It seems like there was a lot of work put into this project! Thanks!
The fork settings for the Zeb seem close to what I am actually running. The rear shock spring recco is about 100 in/lbs too high compared to what I actually run (when using a fox or rs coil) and what my go to spring rate calculator says. I typically use the spring calc for coil rear shocks that is on the s4 suspension website and have had good luck with those recommendations being accurate and working well.
I do recognize I push the limits of the calculators and calculations though. For reference I am 245lbs and riding a 180/170 transitions spire with a zeb ult and push 11-6. Your push option also doesn't allow shock sizing to be entered and gives a rec of 975in/lb spring.
Rebound rates on 38 seems very slow. Spring rates on 2 bikes for coil seemed pretty close or right on.
Missing trunnion shock lengths.
Missing 2027 RockShox Lyrik, Zeb, Super Deluxe, & Vivid.
Rebound suggestion for shock (2026 Vivid & Super Deluxe) was WAY too slow, completely wrong. Like... for a 161 lb rider it was suggesting 1 click rebound on SD. I run like 11-12 for that shock.
Suggests running 3.5% more sag for a Vivid over a Super Deluxe which doesn't make any sense to me (same stroke/travel/weight).
Pressures were close-ish (like within 5-10% of what I run, which is usually at or a couple PSI higher than what Trailhead suggests).
Yeah it's been a project. I like that idea. Currently I let people choose between balance, soft, or more supportive suspension.
Thanks for trying it out!. I'll take a look at those spring rate calculations again. I might have to implement some different profile for riders at the far end of the spectrum. I'll change the sizing for the push shocks too.
I'll take a look at those rebound rates.
I'll take a look at those issues. I think it might have been estimating clicks from the middle instead of from the end for that model. Thanks for trying it out!
Way off for:
Easy Sus MTB Suspension Setup
Generated: 5/20/2026, 10:56:24 AM
RIDER INPUTS
Rider weight with gear: 75 kg
Input units: Metric (kg)
Output units: Imperial (psi / lb/in)
Bike type: E-bike / eMTB
Setup feel: Balanced / manufacturer baseline
Current issue / symptom: No major issue
Frame-specific shock influence: On
Frame leverage profile: Very progressive - aggressive enduro, freeride, coil-friendly
FORK INPUTS
Brand: Ohlins
Model: RXF38 m.2 Air TTX18
Year: 2024
Tier/spec: Air TTX18
Travel: 160 mm
Volume spacers/tokens installed: 0
SHOCK INPUTS
Brand: Cane Creek
Model: Tigon RAMP Tube Coil
Year: 2025
Tier/spec: Tigon
Shock size: 210x55 mm
Rear wheel travel: 160 mm
Volume spacer installed: Coil spring - no air volume spacer
FORK OUTPUT
Ohlins RXF38 m.2 Air TTX18
Year: 2024
Tier/spec: Air TTX18
Damper/system: TTX18
Fork travel: 160 mm
Main chamber: 84 psi (max 250 psi); component baseline 79 psi
Ramp-up chamber: 151 psi
Sag target: 17.5%
Fork sag: 28 mm
LSR: 7 (Max: 15 clicks. Counted from closed.)
LSC: 7 (Max: 15 clicks. Counted from closed.)
HSC: 1 (Max: 3 clicks. Counted from closed.)
air volume spacers / ramp-up chamber: current 0; recommended 0 (keep)
SHOCK OUTPUT
Cane Creek Tigon RAMP Tube Coil
Year: 2025
Tier/spec: Tigon
Damper/system: Tigon RAMP Tube
Shock size: 210x55
Rear wheel travel: 160 mm
Average leverage ratio: 2.91:1
Estimated leverage near sag: 3.32:1 (Very progressive - aggressive enduro, freeride, coil-friendly)
Spring rate: 650 lb/in (114 N/mm)
Sag target: 28%
Shock sag: 15 mm
Rear wheel sag: 45 mm
LSR: 5 (Max: 15 clicks. Counted from closed.)
LSC: 6 (Max: 12 clicks. Counted from closed.)
HSC sweep: 90 (Max: 180% sweep.)
Lever / platform: Climb Switch + RAMP Tube
Coil preload: 1-2 turns after spring contact
indexed volume / RAMP Tube: current Coil spring - no air volume spacer; recommended Coil spring - no air volume spacer (keep)
(Maybe all of this could be encoded in a query string so I can easily share my choices?)
Anyway, I'm running about 105 psi on the fork with 220 in the ramp up chamber, and my coil on Tigon is 500 with all the psi's I can get from Ramp tube. It's a Levo Gen 3 + Cascade links. Tigon dials though seem to be about the same I run.
Thank you for trying. I'll work on fixing that.
I can recognize Claude vibe coding at this point.
psylo gold/ebike,
your calc is at 135 - 8 RB, treks guide is 108 - 1 rb.
lol
Hi, the recommended settings seems right, but the rebound settings for 2026 Float X2 are too slow, since the shock has max pressure of 350 PSI, the recommended settings for 297 PSI is: LSR 3, HSR 1, but the rebound is too slow. It seems to Me, that You are calculating the results from Fox settings, that go just to 300 PSI. If these were correct, then, if you are heavy and have pressure above 300 PSI, you dont have any clicks to slow your rebound. I hope its understandable, English isnt My first language. Cheers
Many of the shocks use the manufacturer's rebound tables to start with. However, it bases the rebound off of the shock pressure, which has a few things going into that calculation. Choosing an issue from the issue selector in the rider input can change the rebound results.
Yes, I understand that, but If You have 300psi in your shock, Your calculator recommends 1 HSR, but if You have 350? Than you cant slow it anymore, since You are at the end of adjuster range by pressure 300.
At that high of pressure, it’s generally recommended to have the rebound fully closed because there is so much force trying to extend the shock already.
On the Cane Creek AirIL, the HSR and HSC should be on a “turns” scale rather than “clicks.”
I bought it new from Cane Creek in December of 2025.
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