10 votes

How to determine chain length on a Brompton?

There is no one standard Brompton chain length; there are 4 different ones for the various sanctioned drivetrains. For nonstandard Brompton drivetrains, I've had good luck using the longest length ...
Nathan Knutson's user avatar
10 votes

Tricks for finding tick tick noise while pedaling

Generally the key to diagnosing a ticking noise is to associate that noise with the correct behavior. You have already narrowed the search to "while pedaling" so it's not wheel related. For ...
David D's user avatar
  • 21.1k
9 votes
Accepted

Training vs increasing gear ratio

On road, gears much less than 1:1 aren't really quicker than walking anyway. 4.8km/h is a realistic walking pace pushing a bike uphill. With 30:40 you'll ride this at a low - but not unreasonable ...
Chris H's user avatar
  • 58.4k
9 votes
Accepted

New chain coming off under torque

Put a fork in it - that chainring is cooked. https://www.sheldonbrown.com/chain-wear.html Your chainring has the classic "shark fin" tooth shape (note the slope of the teeth on the sprocket ...
Andrew Henle's user avatar
  • 10.6k
9 votes
Accepted

Does a 3x to 1x conversion make sense for this bike?

Cost wise it is probably not a great investment to change the front of the drive train. At some point it becomes a better value proposition to sell the bike and use those funds, plus what it would ...
mattnz's user avatar
  • 49.8k
8 votes
Accepted

Converting Belt Drive Bike With Paragon Sliders to Conventional Cassette

If what you have now is the plain "no hanger" drive side Paragon insert, there's not really a good way of getting a rear derailleur installed on to it. Depending on the situation, it's ...
Nathan Knutson's user avatar
6 votes
Accepted

Is it acceptable to have some noise on largest sprockets?

I would go with a simple yes because largest cog usually means cross-chaining (or at least some angle in chainline), and the drivetrain is always a bit louder than with perfect straight chainline in ...
DoNuT's user avatar
  • 4,226
6 votes

Tricks for finding tick tick noise while pedaling

You mentioned that it's less regular when out of saddle. That partially sounds like what I'm about to describe, but partially not. This answer may not be helpful to you, but I think it may be valuable ...
user622505's user avatar
5 votes

Is there such thing as an automatic transmission for bikes?

This post would deserve to marked as outdated or having a fresh start (or a clean up), as most of the answers are now outdated or redundant, and the accepted answer is a dead link. As of August 2023, ...
Renaud's user avatar
  • 19.1k
5 votes
Accepted

How can I increase ebike drivetrain reliability?

If the main problem is dropping the chain, a chain catcher or guide should help. Your chain may also be too long. Or, as you're always in the smaller sprockets, just a bit slack. You should check the ...
Chris H's user avatar
  • 58.4k
5 votes
Accepted

Are all top of the line components always compromising on durability in order to save weight?

This question covers a lot of ground because ultimately it breaks down to observations on every cost/durability/weight compromise area on every type of component, and on top of that there are major ...
Nathan Knutson's user avatar
5 votes

Trainer quieter after swapping cassette; is there a better solution?

It is a known issue that mixing cassettes and chains of different wear states often creates noise, simply because the chain doesn't fit as well on the cogs if you have an old cassette with a new chain ...
DoNuT's user avatar
  • 4,226
4 votes

How can I increase ebike drivetrain reliability?

The reason that seems to me to be most plausible would be a disengaged clutch: heavy cassettes have inertia, and the clutch is not engaged, you can have a sudden release of tension in the upper part ...
Renaud's user avatar
  • 19.1k
4 votes

Does this chain seem short? Does this photo indicate any obvious drivetrain issues?

Are you on your largest chainring in this picture? (Chainrings being the large cogs by your pedals). I see the chain deflecting slightly between the bottom of the lower jockey wheel (on the right in ...
SSilk's user avatar
  • 4,129
4 votes

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

There is a lot in this post. Here are the questions I see. Fix what I have or buy something new? Do I need to get the fork serviced if its working OK? (my vote is "no") If I buy something ...
David D's user avatar
  • 21.1k
4 votes

Does a 3x to 1x conversion make sense for this bike?

What I'd do, on a budget, is lock the front mech in the middle ring, disconnect the cable, and fit the widest range 7-speed cassette I could find online (11-32 or 12-34 is common, 11-34 available, 11-...
Chris H's user avatar
  • 58.4k
3 votes
Accepted

Compatibility of Microshift BS-M10 10 speed friction shifter with 11 speed derailleur?

This is according Shimano derailleurs only for now and the values are estimated. MTB 10s pull ratio is 1.2 - which is most likely pull ratio of BS-M10 Microshift shifter. The total length of a pull ...
guyfromthesun's user avatar
3 votes

Training vs increasing gear ratio

Training is always good, but if your gears are too hard for a sustainable pace there is no way around changing your gears. Of course reducing weight would also help on climbs.
Michael's user avatar
  • 26.8k
3 votes

Shimano FC-RS510 compatibility with Shimano Ultegra 6800 and Shimano R7000

In the Shimano universe, their compatibility charts are very handy. This chart only shows the 11 and 12 speed road groups, but the same collection of bottom brackets exist in the corresponding 10 ...
Ted Hohl's user avatar
  • 6,162
3 votes

What do I need to consider when updating my Cannondale Topstone 4 groupset?

We are all glad you are getting more interested in the sport! I am not going to directly answer the question you asked, because others have. I'm providing some possible other considerations. Often, it ...
Weiwen Ng's user avatar
  • 31.1k
3 votes

What do I need to consider when updating my Cannondale Topstone 4 groupset?

I've got the Topstone with 105 (2x11), and the shifting is better than the rather tired Sora (3x9) setup on my tourer - but not by much; if I renewed everything on the tourer the biggest difference by ...
Chris H's user avatar
  • 58.4k
3 votes
Accepted

Premature chain wear GX Eagle

I found the answer and i was just stomping the chain too hard. I switched my riding style and am switching gear constantly now based on the terrain instead of stomping through. this greatly increases ...
Christoph's user avatar
  • 173
3 votes

Training vs increasing gear ratio

Since you want to be faster on climbs (as you clearly stated), you can't cheat physics (it's not meant as an elitist statement). Lower gearing will just give you a comfortable cadence down to (s)low ...
DoNuT's user avatar
  • 4,226
3 votes

Unable to backpedal - jockey wheels on Campagnolo derailleur

Problem solved, but not for any obvious reason. During the long ride, the tiny magnet that activates my computer fell out of its holder, and I presumed was lost forever on a country road. I had ridden ...
gil's user avatar
  • 51
3 votes

Does a 3x to 1x conversion make sense for this bike?

A 7 speed cassette is a rare thing now days. I use them on my wet-day road bike and no bike shop stocks them. Check its not a 7 speed freewheel instead of a cassette. A 6, 7, and an 8 speed ...
Criggie's user avatar
  • 124k
3 votes

I put my bike on the bus and now the chain can't stay on

If the pedals keep moving when your feet are completely clear, then they're being pushed/pulled by the chain, which is being driven by a jammed up freehub inside the rear cassette. The sound of ...
Criggie's user avatar
  • 124k
3 votes

Will a Shimano Deore 11 speed chain work on a SRAM NX 11 speed drivetrain?

The shortest possible answer is yes, there aren't issues. A slightly longer answer is: most road and MTB chains follow the same general standard. Shimano 11s road and MTB drivetrains may shift ...
Weiwen Ng's user avatar
  • 31.1k
2 votes

Independent drivetrains on tandem bicycle

James Starley1 designed a differential drive in the 1800s so he could ride a "sociable" (side-by-side) tricycle with his son. Each rider can contribute the power he or she is capable of ...
Michael come lately's user avatar
2 votes

Dangerous feature on a new 20" wheel kids bike? EZBuild pedals

This is garbage. My nine year old is an inexperienced bike rider. No tricks, no hard use. After a year the pins that lock the pedal in place have bent and now the pedal will no longer hold its ...
Jarid's user avatar
  • 21
2 votes

Premature chain wear GX Eagle

Expanding on a comment I made: manufacturers put surface coatings on their premium chains. Shimano and Campagnolo add low-friction coatings. SRAM adds what I think is a chrome-based treatment to their ...
Weiwen Ng's user avatar
  • 31.1k

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