Derailleur capacity

1. What is a derailleur capacity?
2. How do you calculate the capacity of a derailleur?
3. How do I know my derailleur speed?
4. Is my derailleur SS or GS?
5. Can I use a MTB derailleur on a road bike?
6. What does a derailleur do?
7. What is an 11 34 cassette?
8. Can I use 10 speed derailleur on 8 speed cassette?
9. Can I use a 7 speed derailleur on an 8 speed cassette?
10. What is front derailleur?
11. What does Shimano SGS mean?
12. Can you mix shifters and derailleurs?
13. Can you mix SRAM and Shimano?
14. Do all derailleurs fit all bikes?

What is a derailleur capacity?

your drivetrain capacity is the maximum amount of slack chain the rear derailleur cage can handle. The more potential slack, the bigger a derailleur cage you need.

How do you calculate the capacity of a derailleur?

Subtract the number of teeth on the smallest chainring from the number of teeth on the largest chainring. 52-36= 16. Now subtract the number of teeth on the smallest cassette cog from the number of teeth on the biggest cassette cog. 28-11=17.

How do I know my derailleur speed?

If you are replacing an existing derailleur on a bike, simply count the number of cogs on your cassette and you're good to go. If your drivetrain's speed is an unknown quantity, you can count the number of steps that your shifter runs through and add 'one' to determine the number of gears your drivetrain has.

Is my derailleur SS or GS?

The difference between SS and GS is technically as follows. To make it easy to remember, SS (short cage) is compatible with cross ratio road sprockets, while GS (medium cage) is compatible with wide ratio sprockets.

Can I use a MTB derailleur on a road bike?

You can use a mountain bike r/d with a road or cross bike. It works fine. You can use a 9 spd r/d with 10 speed shifters. It works fine.

What does a derailleur do?

The rear derailleur is the mechanism that shifts the chain at the rear sprockets. There are many different models but they all share the same basic design and functionality. Derailleurs are secured to the bike with a mounting bolt to the frame's derailleur hanger.

What is an 11 34 cassette?

Switching the cassette to an 11-30 decreases the speed from 14.1 to 13.2 km/h and switching to an 11-34 decreases it to 11.6 km/h. These cassettes have the same 11 tooth small cog, so maximum speed is not affected. ... However, the 11-34 cassette has easier gearing in every combination except while in the 11 tooth cog.

Can I use 10 speed derailleur on 8 speed cassette?

A 10-speed derailleur can work with an 8-speed cassette only in one situation – if it's a road model designed by Shimano and not part of the Tiagra 4700 series. ... Because the rear shift ratio of Shimano's 10-speed road derailleurs is 1.7 and matches that of 8 and 9-speed Shimano derailleurs.

Can I use a 7 speed derailleur on an 8 speed cassette?

8 speed shifter and cassette, 7 speed derailleur? You'll be fine. There's no "probably" about it. 6-, 7- and 8-speed gear is all cross-compatible in terms of chain width.

What is front derailleur?

The front derailleur is the mechanism that shifts the chain on bike with more than one front chainring. There are many different makes and models, but they all share the same basic design and functionality. Front derailleurs are attached to the bike with either a clamp or bracket.

What does Shimano SGS mean?

Shimano MTB rear derailleurs last letters will be GS or SGS, which stand for "Short cage" or SGS for long cage. A XTR rear derailleur will be RD-M970-GS (for short cage) or RD-M970-SGS (for long cage)

Can you mix shifters and derailleurs?

In many instances, it is possible to mix different levels of shifters and derailleurs from the same brand (e.g. Dura-Ace/Ultegra/105; Red/Force/Rival; Super Record/Record/Chorus), however it's not safe to assume that this will always be the case.

Can you mix SRAM and Shimano?

Most importantly, YOU CANNOT mix Shimano and SRAM hydraulic brake parts. ... The SRAM rear derailleur (mech) will not work with a Shimano shifter as is; the cable pull and shift activation ratios are not the same between the two systems.

Do all derailleurs fit all bikes?

A derailleur for your mountain bike should match the specifications on the original derailleur. That is, while it doesn't need to be the same model of derailleur, it does need to be the same brand, in almost every case. It also needs to match the number of gears, or have more intended.