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Messages - Medico

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1
29er / Re: Carbonda fm936 Thoughts
« on: August 30, 2024, 02:26:22 PM »
Hi.

I'm completely new here and willing to buy good chinese cross country bike. I settled my mind for dm936 based on all the threads here.  I prefer 2 chainrings but somehow it's impossible to get a new frame designed to have front derailleur.

So I contacted Carbonda on Alibaba and over their webpage..no reply.
How to get to them, has anyone any other contacts? Thnx in advance.

No offence, but if you read this thread you will find the way.
Hint google?!

3
29er / Re: Carbonda fm936 Thoughts
« on: October 22, 2023, 06:48:15 AM »
Any chance to insert foam anti vibration for shift and brake cables ? Any brand to recommend?
Thx

After almost 17k on it, I think I don't need it. And thats an OCD type a guy saying who hates rattles, creeks etc.

4
29er / Re: Carbonda fm936 Thoughts
« on: October 13, 2023, 12:15:24 AM »
I’m thinking of retiring my 936. I have 1500 miles on it. The drive side chainstay is failing (due to a lame attempt to ride through a cinder block garden) and the drivetrain is 11sp (same cassette for all 1500miles, one chain swap).

Here’s what I’m thinking so that I don’t trigger the wife alarm:
1. new frame that is T Type compatible
2. New T Type drivetrain
3. Swap wheels, suspension, brakes (sus just got the 200hr service 500 miles ago)
4. Ride like a stole it

Anyone else retire their 936? What did you do?

Nope...I did 15000km on it and still loving it.
I still don't think there are better frames out there for the same price...maybe the 909 which has uds(isn't it?) And two bottle option.
A new frame will definitely trigger any wife...replacing only the rear will probably not

5
29er / Re: Carbonda fm936 Thoughts
« on: August 09, 2023, 04:00:00 PM »
Anyone having issues with the headset? I'm having an iritating sound coming of the front. Canecreak headset is in it, but having some play in the frame at the top, which should be normal considering this type of headsets.
Any ideas to fix it besides a lot of grease(which helps for a couple of xx km)?

Did my own fix/bodge...plumberstape 8)!
Some tape around the upper bearing made it a tight fit and gone js the sound!
Also helps with bb issues...

6
29er / Re: Carbonda fm936 Thoughts
« on: July 25, 2023, 03:23:04 PM »
After lurking this page and gathering parts for a while, here's my FM936 120mm, size S in matte RAL 6003 (Olive Green).
With Fox Factory float SC fork and rear shock, Shimano XT groupset and speedsafe wheels (ali-express) it ended up at 12kg.

Really happy with how nimble and reactive it is, however the front end does feel a little nervous (even on straights), despite the fact that the fork is a 44mm offset.
Any recommendations on changing stem length or bar width make the front end more stable? I'm reading conflicting things about stem length online, some sources say a shorter stem makes for quicker handling, some say it delivers more stable steering  ???
 
Right now I'm running a temporary cockpit I had laying around with handlebar width 69cm and 100mm stem (-17degrees), reach wise this already feels pretty good.

thanks!

My thoughts (and everybody who rides a new type, long and slack, bike) would be to ditch the '90 cockpit and buy a new one...shorter and wide. A bar round 74+ cm and a stem between 3.5 and 6cm.

It will need a couple of rides to get used to if you're coming from the middle ages cockpit wise, but will be a lot better in every way.

Good luck.

7
29er / Re: Carbonda fm936 Thoughts
« on: July 11, 2023, 03:39:28 PM »
Anyone having issues with the headset? I'm having an iritating sound coming of the front. Canecreak headset is in it, but having some play in the frame at the top, which should be normal considering this type of headsets.
Any ideas to fix it besides a lot of grease(which helps for a couple of xx km)?

8
29er / Re: Carbonda fm936 Thoughts
« on: May 24, 2023, 11:45:56 AM »
Thanks for the feedback, yes I was concerned about sizing up being too cumbersome in the first place. I’m open to changing my cockpit set up. From the start, I wished to avoid a bike that’s hard to maneuver (wheelbase) hence the Medium. I weight 78-79 kg, to prevent the suspensión from being too active, i have it pumped to about 230-250 psi i believe. I get lots of good small bump absorption, and the suspension works as intended everywhere else. Haven’t bottomed out either.

What I find strange though is that Vitus specs their top of the line size M with an 80mm stem and 740 bars… what? And the size L goes to a 90mm stem!!

Also: What would the new 120mm rear link offer me? Seems like it rides with a higher bb, maybe that’s an opportunity to get a size L and ride it lower in the sag to feel more “inside the bike” as opposed to being perched atop it.

It sounds like the sag is fine then.
Yes, you're right for a dc kind of bike 740mm seems off, I ride a 780mm with a 5cm stem and I'm 174cm! But If you look at the ns synonym they offer 60mm by 760mm for M, L and Xl.

I also have the 120mm rear link for a couple of weeks. It's even more on then in the bike even with 30+ sag. Helps for the peddle hits. But it doesn't feels that different to be honest, maybe bit more souple? You'll keep a fast snappy bike, not a totall different one.

9
29er / Re: Carbonda fm936 Thoughts
« on: May 24, 2023, 12:03:12 AM »
I think you're trying to make this bike something that it isn't. It is a modern geometry, long wheelbase, slack headtube, cross country/down country frame. RAD might be ok for Trail and Enduro builds where you're hitting jumps and needing to pull the front end a lot, personally I think it makes no sense when you have no reference frame for angle, but this bike is closer to a road fit, long and low. I would definitely consider cutting your bars, running a stem that long with wide bars on this frame is going to give weird steering. The long wheelbase can also take time to get used to for maneuvering tight turns, but it is very much capable of them. I'm 188cm on a size large with a 60mm stem and 750mm bars that I might cut to 740, otherwise it the fit is great and no issue with steering.

Partly I agree, but cutting your bars is a bad advise if people have a wonky feeling, it will get worse. When tight corning is your problem sizing up won't help either, it makes it worse. Probably it's your skills...it needs to be turned more like a motorbike in titght cornes, lay the bike down instead of you.

And other thing, light compression demping with your length could also be an issue if you're +++kg's. The wont be supportive in cornering, so maybe using less sag?

Good luck

10
29er / Re: Carbonda fm936 Thoughts
« on: May 17, 2023, 03:46:12 PM »
So the Vitus specs I recieved may not fit my Fm936?

I have the list of parts from Wing but the bearing spec's aren't on it - just dimensions of the bearings.

Also, should I buy the replacement clip? Or is this re-usable? Does the clip come out with a pair of tweezers?

Just want to minimize downtime during my bearing replacement so I have everything handy.

Please Search this topic for your answer, it's in here. I know for sure..or open up your frame and look on the bearings.

Clips are re-usable and you should use smalltip plier to get them out.

Good luck

11
29er / Re: Carbonda fm936 Thoughts
« on: May 16, 2023, 01:47:37 PM »
Hi,

Is the Vitus Rapide FS & FM936 exactly the same in terms of getting the same hardware and bearings?

I got 2 assembly drawings, 1 from vitus and 1 from carbonda.

I notice on the carbonda drawing, there is a 'clip' in one of the pivots as Part No. 10.
this doesn't exist in the vitus drawing.

Please let me know what you guys think

The clips you mentioned are only in the link for 100mm. In the new link they aren't there anymore. I personally think the older link was a better design; more coverage of the bearings.

So I think the vitus has a slightly different link design... But for your bearings it doens't matter... If it's the same size it's fine.

Ps last sunday I've done the first ride with the new link. More ground clearence, but I've also ridden it with just 25% sag. Felt very direct, but also a bit harsh. Think I need to lower the SAG.

Strangely I need less psi(165psi by 82kg instead of 180psi) with the new link, but could be accounted to the new tune, medium in stead of light...

Someone comments on this?

12
29er / Re: Carbonda fm936 Thoughts
« on: May 13, 2023, 04:02:34 PM »
Just finished installing the new 120mm link. A pain in the ass it was! I rather install new bearings in the bike.
Got the new link through the germin mtb forum for a reasonable price, but if I had bought it directly from Carbonda I would have returned it. The measurements where the mounting hardware should fit were of by almost 2mm. It should be 30mm it was nearly 28...so had to sand it in shape. But its done.
Hopefully it was worth the trouble going from 42.5 to 45mm stroke. There aren't much reviews of the new link, so bit of a gamble.
Also have to check if I didn't f#cked up the shim tune of my rsmdeluxe ultimate 2023. It was Low compression according to the rs website and trailhead app, but looked different when I opened it compared to the shim tune manual. If I did everything well it should be a medium compression tune now...maybe I will do the rebound as well(but it also looked different...).

We'll see tomorrow. Keep you posted.


13
29er / Re: Carbonda fm936 Thoughts
« on: May 02, 2023, 08:52:08 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.

I know...this should only do something with the lsc...only thing i feel is less small bumb compliance and less peddlebob. No Difference during big compressions. Hsc knob would be a better option

14
29er / Re: Carbonda fm936 Thoughts
« on: May 02, 2023, 08:37:11 AM »
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.

Could be, but the sag would be more and so also less peddle clearance...

15
29er / Re: Carbonda fm936 Thoughts
« on: May 02, 2023, 01:05:30 AM »
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.

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?)

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