11
votes
Accepted
What does this screw do (on my bicycle)?
It is called a B-screw. You can find more in the Dealer's manual for your derailleur, but basically it allows to change the angle around the pivot (related to tensioning) and the distance from the ...
8
votes
Which direction should SH51 cleats disengage?
SH51s disengage with twisting outwards or inwards - if nothing gets in the way and you have the range of movement. However they're primarily designed for an outward twist of the heel.
It's quite ...
- 51.2k
7
votes
Accepted
What is the purpose of non-series Shimano components?
Some are mainly meant for OEM use (i.e. for selling to bike manufacturers). This is especially true at the cheap end of the market. You can still buy bikes (or at least BSOs) with Shimano 3x6 gearing, ...
- 51.2k
7
votes
Can I replace hood covers on Shimano ST-2300 brake/gear levers?
I appreciate that this post is very old now but for those still searching here is an update. It is just about impossible getting the ST-2300 hoods. However ST-A070/A073 hoods fit perfectly (Shimano ...
- 71
6
votes
Shimano cassette replacement compatibility
The CS-HG400-9 from Shimano would be a suitable replacement.
Your CS-HG61-9 comes in different sprocket configurations (11-32, 11-34, 11-28 and 12-36). The first number is the number of teeth of the ...
- 1,838
5
votes
Accepted
Shimano Nexus 8-speed gear unstable on hills. Struggling to calibrate
If you have the yellow ticks lined up like that when the shifter is in gear 4, that is correct and you've done all you can in terms of normal adjustment. The other dots are for lining up the cassette ...
- 75.6k
5
votes
Accepted
Does an XT rear shifter fit a GRX RD (both 11-speed, mechanical)?
There is no compatibility between any Shimano road 11 front or rear derailleur and any Shimano mountain shifter.
Use one of the flat bar road 2x11 sets such as SL-RS700.
- 75.6k
5
votes
What does this screw do (on my bicycle)?
According to the manual the B-tension adjust bolt allows you to change the derailleur so that the top pully does not interfere with the sprocket.
You want it close but not interfering.
- 19.1k
5
votes
Shimano components upgrade - Claris/Tiagra to 105 R-7000
A much less invasive path would be keep the cranks, STIs, and rear wheel you have, go to 52/42/30, get an FD that can accept the 10t jump (none of the 50/39/30-era Shimano ones can), and then either ...
- 75.6k
5
votes
Accepted
I want to change a chainring 52 R7000 to a new 52 R8000 - will it fit?
Yes, the R8000 chainring is a direct and compatible replacement for the R7000 chainring. Shifting challenges could present themselves if the two chainrings are of a different tooth count, but being ...
- 5,067
4
votes
Shimano components upgrade - Claris/Tiagra to 105 R-7000
First of all, Shimano 105 is a nice sweet spot price-to-performance-wise, and would be a nice upgrade (I transferred an Ultegra 6800 11-speed setup to a 1994 Trek frame that I use on the trainer with ...
- 5,067
3
votes
Old Raleigh Marathon road bike with new Shimano 105 crankset – What bottom bracket is needed?
To make the crank go in the bike, you need any ISO aka BSA threaded Shimano road Hollowtech 2 bottom bracket. Put differently, any of them that isn't Italian.
You have to be concerned with the ...
- 75.6k
3
votes
Shimano J-Kit installation
The easy joint or J-kit is nice and simplifies installation. However, most bikes I've installed them on ended up with hoses too long--especially the front brake--and this situation requires trimming ...
- 8,512
3
votes
Shimano cassette replacement compatibility
Any other 9-speed cassette will do (whatever the brand), provided that the size of the different cogs (the extremes in fact) are compatible with the derailleur.
- 12.5k
3
votes
Which direction should SH51 cleats disengage?
No, that's not the normal behavior. Are you sure the left foot won't release when twisted away from the bike? It will be helpful if you add a pic of the underside of your shoes just to make sure your ...
- 13.6k
3
votes
Shimano components upgrade - Claris/Tiagra to 105 R-7000
The Numbers: Your current triple gives 119.9 gear inches in the hardest gear 50:11
and 28.3 gear-inches when in low gear of 30:28 This is spread over 24 gears.
By comparison, the new setup offers 127 ...
- 111k
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 ...
- 5,067
2
votes
Shimano FC-RS510 compatibility with Shimano Ultegra 6800 and Shimano R7000
Yes, the parts will be compatible. You will unify everything to road 11-speed. With Shimano, everything is compatible here. The Ultegra vs. 105 cassettes only differ in weight. For cranksets it is ...
2
votes
Which direction should SH51 cleats disengage?
With SM-SH51 cleats, the disengagement direction is:
With SM-SH56, it would be:
Could it be that that your pedal spring tension is too loose that it enables you to disengage the opposite way?
- 1,838
2
votes
Is there a complete list of all Shimano bicycle components?
Without being definitive (from 2004 to today), a good way I can think of is going to the archive section of the Shimano technical documentation website. By opening the specifications documents, you ...
- 1,838
2
votes
What is the difference between BR-IM and BR-C Shimano drum brakes?
The BR-IM roller brakes are older models that are discontinued. The current models are the BR-C (e.g. BR-C6000).
From the Hub roller brake Dealer's Manual (dated 05/31/2021), we can see that the BR-IM ...
- 1,838
2
votes
Roller Brake squeeking, even after body replacement
Only a small pool of potential causes remains since you've completely replaced the brake.
One reason bike brakes squeal sometimes is something about the mechanical condition of the system is allowing ...
- 75.6k
2
votes
My chain tool left a divot on my replacement pin. Is this normal?
A Shimano replacement pin has a manufactured, slight concave shape on the end that the chain tool's drive pin interfaces with to push it home. Perhaps you didn't notice it prior to getting installed.
...
- 8,512
2
votes
Shimano components upgrade - Claris/Tiagra to 105 R-7000
Renaud, Criggie, Nathan, Ted, Vladimir - thank you very much. I'm very grateful for the time you've given to answering my questions, the detail you've given, and the benefit of your collective ...
- 101
1
vote
Shimano components upgrade - Claris/Tiagra to 105 R-7000
On the choice of groupset in case of upgrade, I join the general consensus that a Shimano 105 7000 series is the best way to go.
But personally, I would consider more seriously the possibility of ...
- 12.5k
1
vote
My chain tool left a divot on my replacement pin. Is this normal?
They are supposed to be like that and I think it helps the chain tool to stay centered and not slide off to the sides.
The fact that it looks different from the other pins is actually a good thing. If ...
- 24.5k
1
vote
Derailleurs compatible with Shimano Claris ST 2400 Shifters
If you want a new Shimano rear derailleur compatible with 8 speeds, you can choose the 8-speed Claris R2000 or 9-speed Sora R3000. The cable actuation ratio is the same.
Even older 10-speed Tiagra ...
1
vote
Can a crankset have its chainrings' alignment notch not aligned by design?
This may be the most primitive solution, but you can try both the "erroneous" orientation in the exploded view and the orientation where the notches align towards the pedal or crank arm.
...
- 1,153
1
vote
Shimano R7020 shifter broken - no audible click when shifting
In addition, if this issue happens on a ride, and you can't change up (it's not clicking and the lever moves without tension against it), just hold your thumb against it as you change up. That will be ...
- 11
1
vote
Derailleur-shifters compatibility Shimano GRX
The reason the rx 812 is listed as 1x only is because it's maximum range is taken up by the cassette and adding to that range will decrease chain wrap to smaller cogs potentially to a point where they ...
- 11
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