18
votes
Converting 3x7 to a 1x7. Is it possible with only existing parts?
You have a zero cost solution, which is to keep the front derailleur but remove the cable (and shifter if you like). Then use the FD limit screws to fix it in the right position to act as a chain ...
- 62.6k
9
votes
Converting 3x7 to a 1x7. Is it possible with only existing parts?
If the chainrings are in good order, I would recommend servicing the front derailleur and continue to run it as 3x. The reason is that front dérailleurs rust quickly but are often chrome plated and ...
- 1,484
6
votes
Why might a compact drivetrain be frowned upon?
Perhaps it's worth revisiting this question 12 years after it was asked. The compact crankset won. It's a good thing that it won. Actually, I think we should have known at the time that the attitude ...
- 36k
6
votes
Accepted
Can a BB30 Crank Arm (Left) power meter can be used with a BB386EVO Crankset
The first two you list are BB30 arms and will not be able to work on a BB3860EVO spindle. BB386EVO and other "long-spindle BB30" left cranks almost by definition are going to have the flatter profile ...
- 88.2k
5
votes
Accepted
How did I strip my crank arm with a crank puller?
There's a few factors that can lead to this problem and range from tool and crank material quality to user error.
If you have a tool made from a weak metal or is manufactured badly (ie diameter is ...
- 3,349
4
votes
Converting 3x7 to a 1x7. Is it possible with only existing parts?
Yes, it's doable. You'll have terrible gear ratio range but you realize this and don't mind.
Either find a narrow-wide chainring that fits the crank, or leave the middle ring in place. You may need ...
- 75.9k
4
votes
GRX crank with Ultegra groupset
It's set by the crank, and is like this because GRX is targeted at 135mm/142mm rear ends. GRX takes the same BB as any HT2 road crank.
It's enough to matter, but chainstay length is the other piece ...
- 88.2k
4
votes
My bike makes a constant squeak noise
Bicycle drivetrains can make all kinds of squeaking or creaking noises and it's not obvious where exactly the noise is coming from. You have to use a process of elimination to track them down.
Can ...
- 75.9k
4
votes
Standard to compact swap
The front derailleur height always needs to be adjusted when making this switch. You should assume the front derailleur will need to be completely re-adjusted.
Dropping in a crank for a higher speed ...
- 88.2k
3
votes
GRX crank with Ultegra groupset
The chainline for the GRX groups is very slightly wider than Shimano's standard road groups. This means that the midpoint between a set of double chainrings is 2.5mm further outwards on the GRX groups ...
- 36k
3
votes
GRX crank with Ultegra groupset
The Shimano compatibility charts say that GRX FC-RX800/600 cranks are only compatible with the FD-RX800 front derailleur. I suspect that is because of the shape of the cage for smaller rings and the ...
- 75.9k
3
votes
How did I strip my crank arm with a crank puller?
To add to abdnChap's answer, I have encountered a crank arm that had an opening that was too small for my crank puller. This resulted in the puller pushing against the crank arm, rather than the axle.
- 1,100
3
votes
Converting 3x7 to a 1x7. Is it possible with only existing parts?
I run a small bicycle hobby shop. I have been doing 21 to 7, and 24 to 8 conversions for as long as I can remember.
The conversion can even be done with a riveted crankset that has no bolts in it. I ...
3
votes
Converting 3x7 to a 1x7. Is it possible with only existing parts?
I've done this, converting a bike from 2x11 to 1x11. I removed the big ring, front derailleur, and the shift cable.
I did need parts, but only shorter chainring bolts. If you don't want to do ...
- 31
3
votes
110mm crank on 73mm BB shell
You need a mountain bike specific crankset. Tiagra is a road group. Road bikes typically have a 68 mm wide bottom bracket shell, and mountain bikes have 73 mm. The wider BB shell is used to give a ...
- 31
3
votes
Best option to upgrade 7-speed bike to higher gears
Adding two or four teeth to the largest chainring will not improve you high gear very much. Right now your highest ratio is 48/14=3.429. Going to 52 will get you to 52/14=3.714, which is not much of ...
- 2,708
3
votes
Lower Gearing for Ultegra 11-speed setup
A few options:
You can use a wolftooth roadlink.
You could also move to a sub-compact crankset. There seem to be a few
options for 46/30 cranks, nothing direct from shimano though.
You don't have to ...
- 1,313
3
votes
Compact crankset interchangeability
Yes, all the 10-speed Shimano 34/50 Hollowtech 2 cranks are more or less drop-in replacements for one another. ("More or less" only because they could be subject to very small differences in where the ...
- 88.2k
3
votes
Bottom Bracket compatibility?
You can indeed replace the square taper cartridge with an external bearing bottom bracket and fit new cranks.
Shimano's system is HollowTech II, SRAMS's is GXP, there is also FSA's MegaExo. I believe ...
- 75.9k
3
votes
how to calculate square tapered BB spindle length when coming from external threaded bearings
The spindle length is defined from the crankset, not the frame. There is no relationship between your Tiagra (external) and the future FSA (tapered). You should find with the FSA crankset the data of ...
- 744
3
votes
Accepted
Campagnolo 11 speed chainrings on a 10 speed crank
You can use some early version 11s chainrings on a 10s crankset but not later.
All Athena 11s chainrings are generally suitable because they never changed their fitting system - a male / female two ...
- 797
2
votes
I'm looking for a chainring compatible with bb86
I'm not sure about a list of chainring compatibilities.
I had a similar issue when I wanted to upgrade my drivetrain. My BB30 wasn't compatible with the DA9000 crankset, so I had to buy an adapter. ...
- 41
2
votes
Accepted
Bottom Bracket compatibility?
Yes it can be changed - you need a cartridge BB that has the same measurements. Based on your photo its a 68mm english threadded BB with square taper crank fitting.
The only thing I can't tell you ...
- 131k
2
votes
Convert a compact (double) to a triple front chain ring
In order to change the crankset from double to triple, you will have to replace following things besides triple crankset.
Left brifter to triple from double
Front derailleur to triple
Bottom bracket ...
- 241
2
votes
Cassette & crank combo for commuting
50x12 lets you do about 55km/h (35mph) pedalling at 100rpm. Since you say you're commuting, mostly on the flat, with a non-trivial load, you're not going to get any real use out of a bigger gear than ...
- 17.1k
2
votes
Best option to upgrade 7-speed bike to higher gears
The easiest option is just stick to your original plan of changing ratios in the rear. There there should be Shimano compatible 11-28 or 12-28 freewheels out there. I found one made by DNP after a ...
- 75.9k
2
votes
110mm crank on 73mm BB shell
Other answers have suggested solutions, but I think I know why the situation has occurred.
The entry-level model of the Attain (and the Axial WLS) use a 73 mm threaded shell, and use a 73 mm ...
- 13k
2
votes
50/34 compact with 11-32 10-speed Shimano 105 - will 11-34 make climbing easier or change chainring
Wolftooth makes the roadlink that allows you to shift larger cassettes with standard road derailleurs. You should easily be able to go to an 11-36 cluster with the roadlink and a 105 rear triple.
The ...
2
votes
how to calculate square tapered BB spindle length when coming from external threaded bearings
First of all, that crank is one of the most problematic bike parts I've ever touched. They bend and fold their weirdo made-up-BCD chainrings with amazing regularity. I've had to deal with them a lot. ...
- 88.2k
1
vote
Will Shimano 105 FC-R7000 replace R565
Should be a drop-in replacement.
Presumably you have a Hollowtech external bearing bottom bracket in a 68mm shell. Latest generation Shimano cranks all have 25mm axles that fit in Hollowtech BBs.
...
- 75.9k
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