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Questions tagged [mountain-bike]

Mountain bike (MTB) can mean almost any kind of off-road bicycle. Wide knobby tires, flat handlebars, maybe shocks, probably a sturdy frame...

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4 votes
3 answers
819 views

Technique for Riding a Hybrid Bike on Trails and Switching to Knobbed Tires?

I've been riding a hybrid bike on some intermediate mountain bike trails(at least according to MTB project), and it's been really fun. While I'm not able to "send it" as hard as some of the ...
itisyeetimetoday's user avatar
5 votes
1 answer
223 views

My MTB has slightly longer reach for my size

I'm 175 cm (5′9″) tall and have a 26" hardtail MTB. This bike is apparently small for my size because bike manufacturers do not recommend 26" bikes for my height. However I had gotten this ...
Ender's user avatar
  • 2,084
3 votes
2 answers
498 views

Is a 0.5-1 cm buckle/bend in a rim repairable?

I have a wheel with about 0.5-1 cm of buckle in it. Is it repairable if I get my LBS to true it? It’s a DT Swiss EX 1700 wheel, so it is a sturdy material, no cracks, one tiny flat spot, barely ...
Jason Beams's user avatar
0 votes
1 answer
64 views

Im trying to bid on this auction and i took a picture of the storage of the bike and im trying to figure out what it is and if its worth bidding on [closed]

This isnt my storage.this is a bidding unit.what do you think this bike is and its worth?
Rome's user avatar
  • 1
1 vote
2 answers
77 views

Occasional weird sounds from rear of bike

Usually when not peddling and going fast (road, downhill) this sound happens It usually stops after peddling (forward or backwards) Any ideas what might be wrong? https://1drv.ms/v/s!ApXgO1jaK-...
owen gerig's user avatar
2 votes
1 answer
128 views

How to diagnose and fix a mechanical disc brake rotor that is bent

I have a 2022 GT Aggressor with mechanical disc brake rubbing on the rear wheel. I tried realignment of the caliper several times and I got the wheel trued. But my brakes still rub in one spot. Does ...
Alison's user avatar
  • 1,215
2 votes
1 answer
226 views

I think my MTB chain is modified ( shortened )

I have a 2x9 crank and cassette system. And I can't get it to go on the last cog because my rear derailer is maxed out. I bought a used and altered MTB and I can see the chain is short. So typically ...
Brian's user avatar
  • 21
0 votes
2 answers
105 views

How to upgrade Scale 930 to reduce weight and gain speed?

I need to upgrade Scott Scale 930 (2022) with the following properties: fork: FOX 32 Float Rhythm Grip 3 (100mm travel) bottom bracket: Shimano BB-MT500 / shell 41x92mm rear derailleur: Shimano XT RD-...
Politechniczny's user avatar
1 vote
1 answer
171 views

Dropper Post on Marlin 7 Gen 2 (2021)

I am looking to install a dropper post on my Trek Marlin 7 Gen 2 (2021) size XL. I am thinking I want to get a PNW Cascade 150mm. When I went to measure the seatpost to make sure, it stopped before ...
Thumbdrive's user avatar
0 votes
0 answers
24 views

Confused about tire leakage, valve not attached

I’ve gotten a second hand mountain bicycle (felt brand), now the back tire is leaking air and is unusable. First, I thought that the tube was burst and would need replacing. But now I am just confused ...
Felt_mountain's user avatar
1 vote
1 answer
72 views

Clunk/Knock noise when pedaling

I recently bought a new mountain bike and when I pedal, sometimes (almost randomly) I will hear a clunk or a knock come from the bike. It usually only happens once or twice, but I worry because it ...
Tinyisaiah's user avatar
5 votes
4 answers
1k views

What bike should I buy if I want to fit a child seat and live in area with a lot of hills?

I would like some recommendations for womens bikes that i can fit a rear toddler seat on to. The reason i would prefer a rear seat is because i am short (5ft 3) and my son is quite tall for his age. ...
Clara Sampson's user avatar
3 votes
3 answers
1k views

Is my shifter numbered backwards?

This may be a noob question, maybe I'm over thinking it. But on the bike I just ordered, when I I move from the smaller to the larger rear sprocket, the dial on my shifter counts down. But on my front ...
Matt Misener's user avatar
1 vote
1 answer
141 views

My mountain bike has 26 x 2.35 tires on it and I am ordering new 26 x 2.125 tires

My mountain bike has 26 x 2.35 tires on it and I am ordering new 26 x 2.125 tires. Will these be okay to use? What issue might this cause? Or will the difference be negligible?
Justine's user avatar
  • 11
3 votes
3 answers
177 views

Which full suspension bike is this?

I got this for $10 from my neighbor, who had it laying around for years. As you can see, the rear shock is gone, but the rest is there. It doesn't have any marks or model name, only a serial number at ...
Jinafen's user avatar
  • 33
4 votes
3 answers
286 views

Best derailleur compatible with 1.7 pull ratio?

I want to replace my Tourney 7spd with something else, but my cassette isn't compatible with an upgrade to anything else, so 7spd is what I have to stick with. I know I have to stay within the 1.7x ...
Knivier's user avatar
  • 43
3 votes
2 answers
127 views

Help identify early 90s Chro-Moly MTB

I have this Chro-Moly bike I bought in the early 90s in Chile branded as Oxford, but I believe the frame is an import. One mechanic said it is japanese, another that it's italian. The rear part of ...
mantruc's user avatar
  • 31
2 votes
1 answer
91 views

New Bottom Bracket grinding/crunching?

I recently bought a new Shimano BB-MT501 bottom bracket and installed it. However, once I put the Hollowtech crankset back in place, when turning the pedals there is a very obvious grinding or ...
Matt's user avatar
  • 21
3 votes
1 answer
106 views

my ankle get stuck between the downtube and crank arm

I used to own a mountain bike that I truly enjoyed – a full-suspension (Sisku D7). Transitioning from a hardtail, my initial experience with the full-suspension ride was mostly positive, but there ...
Jonathan Pacheco's user avatar
4 votes
2 answers
307 views

Low attaching vs high attaching mudguards/fenders on MTB

I am about to buy mudguards for my 29" MTB bike. I will only use them while commuting on wet surface. I considered SKS Shockblade and XBlade set, but noticed they are attached to steering tube ...
Andyally's user avatar
  • 143
4 votes
1 answer
226 views

XTR Double chain set to single?

is it possible to convert a m9100 double chainset crank to a single crank? Thanks Matt
Matthew Barber's user avatar
1 vote
1 answer
113 views

Bike pedaling makes cracking noise under middle or high load

Can this be related to bottom bracket bearings of Race Face BB92, PressFit? The chain is freshly lubricated and quite a new one. No noice is produced when pedalling with low load or not pedalling. ...
petrsyn's user avatar
  • 143
0 votes
0 answers
40 views

SRAM 1:1 shifter + Shimano 11 speed MTB RD

I'm planning my next bike build with an 11-50 cassette but I don't want more than 10 gears for personal preferences. I've seen Chinese-brand drivetrains (LTWOO) that can do this but I want something a ...
Gregory Leo's user avatar
  • 1,305
0 votes
1 answer
44 views

Can someone recomend compatible Road/Lever shifters to drive a Shimano Deore RD-M5020-SGS, Shadow Plus, 10 Speed rear mech

I have a Whyte 429 with the Deore SL-M4010, 10 Speed driving the Shimano Deore RD-M5020-SGS, Shadow Plus, 10 Speed rear mech. I want to put Gravel (Drop) bars on it because I simply find it so much ...
Iain's user avatar
  • 1
0 votes
2 answers
153 views

I took my back wheel off and chain will NOT go back on

I took my back wheel off of my back to change the tube, when I put it back on i realized the chain wasn’t going back on the pedal, it’s very hard to explain it but it looks like a part of the chain is ...
Brock W's user avatar
0 votes
1 answer
68 views

Which rear derailleur can I put instead of Shimano Acera

My rear derailleur on Cube Aim Race 29" has broken on the holder. Except for this (and prior to the holder breakage) the derailleur has completely stopped working for some reason. It twists into ...
Vladimir Despotovic's user avatar
6 votes
1 answer
199 views

Why are MTB suspension shock curves s-shaped

Why are the suspension curves s-shaped, rather than just increasing? I understand that air spring curves will steepen a lot when the residual air volume reduces (curves should have a singularity ...
Apfelsaft's user avatar
  • 461
1 vote
1 answer
143 views

Chain / Chain wheel: D type vs sealed type

I have spent a good 30 minutes on this site but couldn't find anything pointing a clear idea. I bought a 26 inch, Dual suspension bike. It has a chainwheel of "sealed type." I asked the ...
PotatoGuy's user avatar
3 votes
3 answers
90 views

Thumb injury, actuate dropper post with index finger?

My partner has a thumb injury on the left hand that makes the long-throw pressing of a dropper post lever impossible. Are there other trigger mechanisms that could be swapped in to allow using the ...
Adam Franco's user avatar
  • 1,584
2 votes
2 answers
232 views

Changing tyre on Diamondback mtb 29"

I want to change tyres. My worry is that I might get it wrong. I usually experience the inner tube coming out especially when I pump in air and ride it the tube comes out. The tyre dimensions are a ...
Kalimosi sichawa's user avatar
4 votes
1 answer
546 views

Tire flat after 2nd trip on Brand New Ancheer 500W Ebike

Ok, so I am new to biking and don't know squat, as you will soon see. I bought a brand new E-bike, an Ancheer 500W. I borrowed an air pump, but had no pressure gauge when I first aired up the tires... ...
Keith's user avatar
  • 41
2 votes
1 answer
162 views

Rear wheel deflating instantly after pumping

I have a mountain bike and recently the rear wheel has gone flat and every time i pump air into it up to 50 psi it deflates after a few minutes I also hear air coming out a certain part of the wheel ...
User's user avatar
  • 21
3 votes
1 answer
238 views

When I press down on my presta valve cap when it is open why is no air coming out

I recently got my bike and it rides great. When I went to pump up the tubeless tires I realized that the presta valve cap isn’t letting air out when I press down on it when it is open. I looked on ...
Super Random Local Facts's user avatar
0 votes
1 answer
123 views

Can anyone help me identify the model of this Viking mountain bike?

I've had a look online and couldn't find anything on it. I couldn't figure out what model of Viking bike this is, wondering if anyone could help.
Dashiell's user avatar
2 votes
1 answer
467 views

What tool do I need to adjust the brake cable here?

I need to loosen very tight bicycle brakes(pads). This is the only thing running over the cable, have no idea what it is and don't have many tools to begin with so assuming I don't have what is needed ...
Tom hardy's user avatar
14 votes
2 answers
2k views

I need help identifying this "Mystery Bike" (could possibly be a real ferrari?)

New UPDATES below!!! Good day to everyone, So i have this really old bike. I don't know its brand and model. The paint is still stock, and it has a Ferrari sticker with the name "Michael ...
Anni's user avatar
  • 185
14 votes
4 answers
2k views

Is this brake mounted incorrectly?

A friend of mine just got her bike back from the store after getting new brake pads, a new fork and a new cassette. After riding a few meters I noticed a weird behaviour while using the front brakes ...
andii1997's user avatar
  • 315
1 vote
1 answer
240 views

Conversion of SRAM MTH 746 from Shimano to SRAM XD Freehub

I own Santa Cruz Tallboy AL R-kit which comes with SRAM PG1230, 12spd, 11-50t Cassette (NX level). I want to upgrade to GX-level drivetrain. The GX goupset comes with XG-1275 Eagle cassette with 10-52 ...
Branislav Abadjimarinov's user avatar
1 vote
1 answer
481 views

Running DUB wide crank with 52mm chainline

I have a set of sram xx1 carbon cranks that are DUB wide. My bike (2023 Specialized Epic Evo) is DUB crank 52mm chainline. If I add BB spacers to the DUB wide crank and use a 6mm offset chainring ...
Derek Ryan's user avatar
2 votes
2 answers
2k views

Cues U6000 and Deore M5100 11 speed compatibility

So we have two basically the same looking and working derailleurs: Shimano u6000 and m5100. They have different pull ratios. The question is if friction shifter would allow me to mix "old" ...
guyfromthesun's user avatar
3 votes
3 answers
373 views

57mm or 65mm winter studded tyres for my MTB commuter?

I'm an averagely built rider weighing ~85kg living in a middle-sized town in west Germany. Up until recently the only bike I had was a 46/16 single speed on 28mm tyres. It was used for both commute ...
ayorgo's user avatar
  • 133
0 votes
2 answers
83 views

mountain double recommendations for a 36/24 170 - 172.5 cranks

I'm looking to convert a 1x10 Mtb of mine into to a 2x10. The gear ratio im intent on is 36/24 with an 11-40 cassette. I owned another bike years ago with this gearing and im looking to replicate it ...
Toph McGoph's user avatar
2 votes
2 answers
156 views

Specialized Stumpjumper Women's HT 2006 Worth Rebuilding Back Up?

I absolutely love my Specialized Stumpjumper HT 15.5 (26" wheels), so light and nimble - a dream for single-track and general xc trail-riding (and nice and nifty for running around town too) but ...
Ali Bee's user avatar
  • 21
4 votes
1 answer
141 views

Which geometry specifications determine the seating position of an MTB?

MTB manufacturers release geometry data for their bikes. If I want to know if a bike has a more upright or stretched position, which geometry data do I have to compare?
JohnnyFromBF's user avatar
0 votes
0 answers
81 views

Serial number/ head badge help needed

I have what I believe is a 1983/1984 Schwinn Sidewinder 10 speed. I am trying to decipher when and where it exactly was built and the year. The serial number on the head tube reads as- DU522482 and ...
ARL's user avatar
  • 1
-2 votes
2 answers
265 views

Specialized registration number [closed]

I’m looking for any kind of registration number on my late 1900’s specialized stumpjumper. Where do I find it and how to determine build date.
Michael Bem's user avatar
0 votes
1 answer
180 views

Tiny dent near the bottom bracket of a new hardtail - should I be concerned?

I’ve just purchased a new Trek Roscoe 7 (aluminum hardtail mountain bike) recently and I’ve noticed this tiny little dent today. It is on the drive-side chainstay near the bottom bracket. Should I ...
TommyYOyoyo's user avatar
0 votes
0 answers
46 views

Help me decode Haro Vector serial number please

Recently acquired a Haro Vector mountain bike. Serial number V2K506004 anyone please help me decode this?
Josh Reedy's user avatar
3 votes
1 answer
354 views

11 speed XT mountain cassete with 105 derailleur and shifter

Will an 11 speed mountain cassette (like the CS-M8000) have the same indexing as an 11 speed shimano 105 derailleur and shifter? I know the cassette needs a spacer to fit on an 11 speed road hub, ...
kag0's user avatar
  • 133
3 votes
2 answers
293 views

Weight on bike vs on rider when pushing bike on steep hill

I wondering, when i ride my Gravel Bike on very steep hill on broken road/gravel i have to push my bike. My total weight on bike including bag etc almost 17kg (14kg on steel bike, 3kg on water and ...
Heykal's user avatar
  • 189

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