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Messages - adroitrider

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16
29er / Re: Carbonda fm936 Thoughts
« on: June 13, 2023, 04:00:24 PM »
Quote from: Kactusdog on June 13, 2023, 02:00:32 PM
And what exactly is the leverage ratio on the OG FM936? I’m assuming this is the original travel one. I run a L compression tune, it’s very active and mutes a lot of small bumps. I have to run a pretty high PSI though, I think 260 psi on a rockshox Deluxe.

Side question here, if the leverage ratio was more like 2:1, what rockshox tune would be appropriate? I’m trying to understand the benefit of running a medium, or a high compression tune.

Leverage ratio is 100/40, 2.5.

In my email exchange with Trail Labs, they mentioned the high PSI to achieve desired sag is correlated to the frame leverage ratio and shock design. Going 30-40psi over weight is normal, depending on frame.

When it came to the tune, my goal was increased plushness and achieving full stroke on big hits (3-4ft drops, g outs, and mistakes on rocky tech. If I’m racing, I notch up the rebound and pressure a bit.

17
29er / Re: Carbonda fm936 Thoughts
« on: June 13, 2023, 10:34:53 AM »
But honestly, all my riding buddies pointed out that I should have just bought a new shock so that I had the M Compression tune as a backup.

Also, reading about Nino’s Flight Attendant SID(s) makes feel stupid for dropping money on the 200hr service and tune.

Anyone have a guess on the price of a SIDLuxe w Flight Attendant?

18
29er / Re: Carbonda fm936 Thoughts
« on: June 12, 2023, 03:39:02 PM »
Tried the High compression tune for 20miles. Switched to Low compression tune as mentioned by another in the thread. I like the Low tune. It lets me run a higher pressure and achieve a 30% sag.

I did send it out to a full time tuner, Trail Labs. They mentioned the IFP might have been setup wrong at the factory, preventing full travel.

I do get much closer to full travel at 225psi, I am 190lbs.

SidLuxe A1.

19
29er / Re: Carbonda fm936 Thoughts
« on: May 25, 2023, 07:47:37 AM »
Quote from: Kactusdog on May 24, 2023, 11:18:00 PM
Gotcha, yeah I do enter in the occasional races when training and time permits, as I have a little girl now  :D

Is this still a race-able bike in the 120 front/rear config?

Yes. For dry technical courses like Breck Epic, perfect bike.

For Iceman, not perfect.

For muddy tracks, not enough clearance at the rear seat stay or chain stay bottom bracket area.

Run what you brung!

20
29er / Re: Carbonda fm936 Thoughts
« on: May 24, 2023, 10:57:47 PM »
Quote from: Kactusdog on May 24, 2023, 10:14:46 PM
What a motivational response! I rode a size L Fuse, the reach and stack roughly match the size M. But man, in hindsight the effective top tube, bb drop (i think) and the feedback from a few forum threads (before I found Chinertown) had me leaning towards  the size M.

I recently learned how the hardtail compress forward and gets a tad longer, where the full sus shrinks a bit. Getting cramped during the rear’s actuation.

I think those riders advocating for the smaller size are focused on XC racing where a very small percent of the course requires a long, low, slack bike. So, they shorten it and ride higher.

Most of my riding is for giggles and I’m chasing buddies on Yeti (SB140) Lunch Rides through a variety of terrain.

21
29er / Re: Carbonda fm936 Thoughts
« on: May 24, 2023, 08:53:32 PM »
Quote from: Kactusdog on May 24, 2023, 04:51:20 PM
Can you share any photos? I am probably going to buy a size L and try to sell my M. I think I will leave the shock with it, as it's all color matched at this point. I need to weight out here if the 120 rear with my 120 SID will be a better ride for my rocky, rough environment than keeping the travel at 42.5, or even 40.

Do you see any benefits of the 40mm or 42.5mm rears' travel? Or rather I should ask, is there a clear benefit to building with the new linkage. I am new to FS, so trying to make sense of it all. I had to really pump up my rear to 250 psi to make the L compression tune work for my trails, 23mm sag...

The Fuse is a relatively slack hard tail. What specific geometry measurement drove you to a M? Was it wheel base only?

I have ridden my hardtail a lot this spring and it is a size smaller than my 936. One thing my riding buddies noticed is that I take less risks on my hard tail. I take the B line a lot, navigating around obstacles or high consequence features.

The 936 wants to go straight. It begs you to feather the brakes and seek the apex at speeds you would never even consider on a hard tail. You want the longer wheel base to provide confidence in cornering. To provide the counter balance to your body getting really low and into the bike.

Get the Large.

22
29er / Re: Carbonda fm936 Thoughts
« on: May 02, 2023, 08:56:59 AM »
And I believe someone said the Super Deluxe can’t fit on the 936?


23
29er / Re: Carbonda fm936 Thoughts
« on: May 02, 2023, 08:47:28 AM »
Just be clear, the H M L tune is different than LSC feature on the shock. Nearly all RockShox shocks that aren’t super weight weenie have a blue dial for Low Speed Compression tuning.

Picture attached for reference.

24
29er / Re: Carbonda fm936 Thoughts
« on: May 02, 2023, 08:38:48 AM »
Quote from: Medico on May 02, 2023, 08:37:11 AM
Could be, but the sag would be more and so also less peddle clearance...

Agree, thus why I am shopping for a shock with LSC.


25
29er / Re: Carbonda fm936 Thoughts
« on: May 02, 2023, 08:35:17 AM »
Quote from: numberzero on May 02, 2023, 07:09:55 AM
A very fun vitus rapide or fm936.
https://us.vitusbikes.com/blogs/stories/pop-art-rapide

Sweet setup. I want the AXS seatpost!

Funny how they are running a SidLuxe Ultimate. I wonder if they are using a special tune…

26
29er / Re: Carbonda fm936 Thoughts
« on: May 02, 2023, 08:30:32 AM »
Quote from: Medico on May 02, 2023, 01:05:30 AM
I weigh about the same as you and changed from a delixe rt3 MM tune to a 23 delixe ultimate Low compression/linear. Did it because I couldn't use whole travel of the 42.5mm shock without lowering the sag more than 30% (no spacers, around 190psi).
Now I ride the new shock with low compression and Linear with 2 volume reducers and 190psi.l; I think it's a totall different bike. I tracks very good, it's lively compared to dead. About the same paddlebob. But I'm in doubt what to do, because I sometimes need more support, but don't bottom out. Maybe I do change to a medium compressiontune.
But I don't know why people of my weight needs a high tune ( or de sid is a totally different shock?)

I’m no expert, but my assumption is that a high compression tube would give me more support at the beginning of the shock stroke. Allowing me to run lower pressure and the ability to tap into all 42.5mm of stroke.

I’ve ran about 350psi with the M tune.


27
29er / Re: Carbonda fm936 Thoughts
« on: May 01, 2023, 10:10:24 PM »
Hi all,

I had the high compression tune installed on the SidLuxe and have it set to 200psi right now. I’m 190lbs. Sag is currently 35% on a 42.5mm stroke. The shock tuner had it so long that I started shopping for a backup/second shock and determined I want Low Speed Compression tuning.

Not sure if anyone saw, but RockShox came out with a SidLuxe WCID for the Specialized Epic that has low speed compression tuning. This might work it’s way into the normal SidLuxe but for now I’m gonna look for a Deluxe Nude…

I’ll report back on the high compression tune after a few rides.

28
29er / Re: Carbonda fm936 Thoughts
« on: March 30, 2023, 11:17:34 AM »
Quote from: carbonazza on March 24, 2023, 07:13:05 AM
As expected the FM 909 is UDH already.
The FM 936 is left in the dust  ::)
Maybe we could come up with a 3D printed part as @adroitrider pointed out.

Did you hear back from them? I haven’t.


29
29er / Re: Carbonda fm936 Thoughts
« on: March 22, 2023, 06:59:32 PM »
Quote from: Eneen on March 22, 2023, 05:04:35 PM
AFAIK 909 is UDH already...

Yes it is. Says it right on the spec page.


30
29er / Re: Carbonda fm936 Thoughts
« on: March 22, 2023, 08:26:24 AM »
Quote from: adroitrider on March 22, 2023, 08:12:09 AM
I just tried to order one.

How unique is the frame spacing to work with the UDH? Is there a chance the 936 is already compatible?

Here is a picture of the 936 hanger slot and a picture from the design variants from Sram. It looks like variant 5 or something there could work with a custom machined shim.


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