All Questions
Tagged with gears drivetrain
41 questions
1
vote
2
answers
46
views
converting to a 48/38/28 oval tech SR Sakae
I am a 72 year old, male rider, 5’11” used to touring with a 52/42/30 triple chainring and 170mm crankarm. Would converting with a 48/38/28 ovaltech SR Sakae help with climbing the grades without ...
- 11
3
votes
1
answer
70
views
Is play on the Schlumpf Mountain Drive chainring a problem? How to fix?
There is forward & backward play on my Schlumpf Mountain Drive chainring. Is this a problem? If so, how do I fix it?
When I hold the crank steady, there is back-and-forth play on the chainring in ...
- 537
1
vote
1
answer
207
views
pedals only move bike at highest gear
Recently my bike will only move if I’m in the highest gear. I can pedal at lower gears but it will not move my bike forward at any reasonable speed and when I get up to even a very low speed the ...
- 11
2
votes
1
answer
107
views
Does this chain seem short? Does this photo indicate any obvious drivetrain issues?
Addition.
Yes this is the large-large chainring.
The shifting is rather poor but I have not tuned high, low and B, tension etc.
Thank you
I recently moved to a larger
chainring.
The shifting seems ...
9
votes
7
answers
1k
views
For steep hills, should I train harder or get lower gears?
I’ve just done a 1500km ultra cycling event, the lowest gear setup are front 30t back 40t. Along the journey there are many very long climbs that have more than 10% gradient. To conserve power I ...
- 319
2
votes
1
answer
264
views
Shimano 7 speed shifter with 9 speed drivetrain
Can I use a Shimano Alivio 7 speed shifter with Shimano Deore 9 speed drivetrain? Basically the bike originally came with everything being set up for 7 speed. Somebody switched out my tire/rim and ...
- 21
5
votes
2
answers
446
views
Compound for freewheel locking sprocket threads
I have an oldschool SunTour 6-speed freewheel, where the smallest sprocket screws on the freewheel body to lock the larger sprockets in place.
It's a normal right hand thread, so as you pedal in the ...
- 53
5
votes
3
answers
1k
views
New freehub body causing chain slack and ghost pedaling
I have replaced my freehub body like-for-like. Now when I freewheel, the top part of the chain goes slack and the pedals spin when I take my feet off them.
This usually occurs on old gunked-up ...
- 153
0
votes
2
answers
2k
views
21 speed to 12 speed conversion! Is it possible?
I have an entry level MTb with 21 speed gear ratio. I found out that i dont need that kind of complexity while riding. 12 speed seems light and compatible to my riding style. It has Shimano tourney ...
-1
votes
1
answer
75
views
Gears slipping when back peddaling
So i was out on my bike racing this weekend and i had a pretty fun time but on one of my practice runs my chain fell off so i quickly got off and put it back on and worked perfectly fine from there. ...
0
votes
1
answer
374
views
Best solution for 2x8 index shifting [closed]
I've been riding a pretty well-tuned frankenbike (I call it the argos, I've had it for 15 years) set up with claris 2x8 shifters (r2400) and dura ace (7700) derailleur on the back with an old ultegra ...
- 11
0
votes
3
answers
591
views
Custom/modified Drivetrain 2x/3x Considerations and Planning
Planning a drivetrain setup for a new bike:
Currently running old Shimano 3x9 44/32/22t on 11-34t, which gives me 19-115 gear-inches (about 620%).
I used 29x2.0, 170mm crank to calculate my current ...
- 19
2
votes
4
answers
2k
views
Options for adding lower gearing for bike with Shimano 105 drivetrain
I have a 2015 Salsa Vaya 2 with a Shimano 105 drivetrain. It has a Shimano 105 Triple front derailleur with a 30/42/52t crankset. In the back it has an 11-30T 10-speed cassette (installed for me by ...
- 121
1
vote
2
answers
4k
views
Going from 2x8-speed to 1x11-speed
I bought a beginner bike with a 2x 8-speed Shimano setup a year ago. I am looking to upgrade, now that I am getting more in to cycling then expected. Since I live in a really flat area (when I go on 3-...
- 179
0
votes
2
answers
311
views
Deore FC-M615 single 64 BCD chainring
I want to build a 1x9 drivetrain MTB so I'm wondering if I can set this FC-M615 crankset to a single 64 BCD 28T chainring, from what I can see the XT M8000 is compatible and allows 11-speed cassette ...
user20351
2
votes
1
answer
382
views
Problems indexing gears
I have a Boardman CX Team 2014 with some indexing issues. It's running a Shimano Sora ST-3500 9 speed shifter with a Shimano Sora rear mech.
The gears had not been running all that smoothly and, as I ...
- 163
1
vote
0
answers
57
views
Pie plate cog on SRAM 2x
Okay guys, I'm trying to re-find fitness in my mid-40s.
My bike has a SRAM Apex (don't laugh, if it's good enough for Alberto Contador, it's good enough for me - and you!) 10-speed drivetrain with ...
0
votes
2
answers
252
views
Would a IGH drive train last longer than a derailleur drive train?
Would a single sprocket + 8 speed chain + single chain wheel used in combination with a IGH last longer than a 10 speed cassette + 10 speed chain + 3x chain wheels?
Image I have 2 bicycles.
Bike 1 ...
user31142
3
votes
3
answers
6k
views
Can a 21 speed Shimano Tourney groupset get converted into a 7-speed?
I currently ride a 3x7 Tourney bike, which I’ve upgraded moderately and it is riding nice. I’d like to know if I can somehow replace my 3-crankset for a simple one, and also get rid off the front ...
- 91
2
votes
1
answer
454
views
Chain Pops When Leaving Cogs
This problem has consumed a lot of time and resources and has yet to be solved.
This is a basic Giant Iguana mtb, with a Deore rear derailleur, SRAM 950 9-sp cassette, Truvativ chainrings, Shimano ...
- 23
3
votes
1
answer
3k
views
Can't shift down from 50T with clutch on, but can shift down with clutch off, why?
Can't shift down from 50T with clutch on, but can shift down with clutch off, why?
I'm using sunrace 11-50 and XT RD-M8000 (SGS), finished setting up everything for absolutely perfect shifting, then ...
user20209
0
votes
1
answer
464
views
Can you use shimano m8000 replacement cogs to replace Sunrace mx80 cogs?
Can one use m8000 replacement sprockets 11T 13T 15T to replace the corresponding mx80 sprockets?
I appreciate the clusters can't be switched due 3 free sprockets and 2 clusters of 4 on mx80 vs 5 free ...
user20209
3
votes
1
answer
284
views
Do 6 speed flight deck shifters exist?
I'm interested in changing my bike from downtube to flight deck shifters, however I'm struggling to find any 6 speed flight deck shifters. I have a suspicion they don't exist.
Thanks a lot.
- 31
2
votes
1
answer
3k
views
Is Back-pedalling normal ? chain keeps jumping from higher to lower cog in rear cassette
I just bought a new bike Marin Pine mountain-1 which has 1 X 11 drivetrain. I want to know is Back peddling normal ? I called my mechanic and he said you should not do back peddling or this will ...
5
votes
3
answers
3k
views
Does effort require to pedal depend on the gear ratio or the gear inches?
I have a 20x1.75" 6-speed folding bike with 52x14-28t drivetrain. Even with the gearing at 52x14, ~3.71 ratio, I can still pedal uphill.
I also have a 700x25C fixed gear with 49x17t gearing or ~2.88 ...
- 837
1
vote
1
answer
650
views
11-46 cassette with 48 chainring for commute bike
I'm building a new commute bike. Would like to consider the idea of using single chainring with 11-46 cassette. Looking at the ratio, 48 front with 46 rear should give me the climbing option I need. ...
- 133
0
votes
4
answers
2k
views
Selecting a drivetrain for touring bicycle
I am planning to build a touring bike with a Surly LHT frame. I'm looking for some advice on selecting a drive train.
My requirements are:
Reliability - I am planning on doing weeks or months long ...
- 141
1
vote
3
answers
1k
views
SRAM compatible 11 speed 12-25 cassette?
I'm looking for an 11 speed 12-25 cassette compatible with a SRAM drivetrain, however I don't think SRAM makes one.
They list specs for their 11 speed cassettes as follows:
11-25: 11,12,13,14,15,16,...
- 5,528
2
votes
1
answer
2k
views
SLX chainring compatibility
I'm considering swapping the inner ring on my SLX double chainset (M665) from 22T to 28T. I noticed that the newer M675 has a 40/28 option, so I figured that the 28T chainring from this set-up would ...
- 4,043
1
vote
2
answers
4k
views
Upgrading rear derailer and cassette
I recently got what most people would consider a cheap and toy road bike as a gift. It came with very primitive RD and cassette (shimano SIS? I think). I enjoy upgrading my stuff, my question is, ...
- 65
5
votes
2
answers
3k
views
(Automatic Bike Project) amount of torque required to change gears?
I am planning to build an electronically controlled automatic bike transmission for my senior design project. I'm personally more of an electrical guy, so dealing with the mechanics is somewhat new to ...
- 153
4
votes
2
answers
3k
views
Weed-eater bike conversion - Safe rpm?
I've recently started working on retrofitting an old bike with an even older weed-eater engine. The engine will sit atop a bicycle rack and directly drive the rear wheel tire (engine has a built-in ...
- 141
8
votes
6
answers
14k
views
Why are there almost no bikes with a single chainring?
Bikes with two or three chainrings are the norm, and then there are singlespeeds, but except for kids' bikes, you see almost no stock bikes with a single chainring in front but a cassette and ...
- 257
8
votes
4
answers
39k
views
Can I fit a cassette with a larger range with my Shimano Tiagra 10-speed ( GS-4600) derailleur?
I'm currently running a 2x10 shimano tiagra 10-speed drivetrain with a 50/34 compact crankset, a 12-30 rear cassette, and a Shimano Tiagra GS-4600 derailleur (that's medium cage aka road long cage) on ...
- 18.3k
4
votes
1
answer
585
views
Should I have a spare cassette or a spare wheel?
I have a road bike that I use for triathlons as well as club rides in the evenings and on weekends. I don't have the bike in front of me, but the range of the cassette is on the low side. I'm more ...
- 315
1
vote
2
answers
7k
views
Will 10 speed cranks work with an 8 speed freewheel?
I'm looking at building a road-bike, and I've just purchased some wheels with campagnolo hubs, with an 8 speed freewheel on the back.
Can I use Campagnolo Daytona / Veloce cranks on the front? I ...
- 318
13
votes
12
answers
108k
views
While pedaling standing up, bike crank gives in as if shifting, what is causing this?
While standing up and pedaling, the cranks give in as if shifting.
It seams like I am shifting down, but my hands are off the shifter, almost like the chain is skipping a link.
I took it to a bike ...
- 131
13
votes
7
answers
12k
views
Does gear ratio affect Power?
Let me preface by saying that this may not be the right SE. I considered asking on the Physics SE, but I thought I might try here first. If it is wrong, I am not against it being migrated.
From basic ...
- 231
61
votes
6
answers
111k
views
What are the pros and cons of internal gears?
I've had my hybrid 24-speed for a bit over 3 years now, and just last weekend, when looking for a bike for my wife, discovered internal gears. Suffice to say it blew my mind when I saw 7-speed ...
- 817
12
votes
3
answers
5k
views
How to avoid wearing out gears?
I have a Specialized Tricross which I bought new last year.
In that time (approximately 1K miles), I wore out my chain and gears. At least two of my gears are still slipping, even with a new chain.
...
- 416
38
votes
5
answers
12k
views
Perfectly setting up gears - how?
Every time I have my bike serviced, the bike shop sets up the gears on a stand in their workshop. The gears change perfectly on the stand, but when the bike is on the road, the rear derailleur doesn't ...
- 481