It should work
. Spacing on Shimano is 5mm for 7 sp and 4.8mm on 8 sp. You’ll wind up with a phantom gear but everything should work.
Are 7 and 8 speed hubs the same?
7s hubs come in 126, 130 and 135mm variants. They are all approximately the same width from the right flange to the right locknut, and this measurement is about 3 or 4mm less than the equivalent 8s hub which come in 130mm and 135mm flavours.
Can I replace a 7 speed freewheel with an 8 speed?
Modern freehubs take 8, 9 , 10 or even 11 speed , the choice is yours. Keezx wrote:
You can change to 8 speed
, but a normal rear wheel for roadbikes will not fit directly into the frame because it’s 130 mm wide. Depends on the stiffness of the rear frame if it can be pushed together safely to 130 mm.
Are all MTB cassettes interchangeable?
In some cases, it is possible to run a cassette from a different brand than the rest of your drivetrain.
SRAM and Shimano cassettes, on either road or mountain bike, are interchangeable with each other as the spacing is the same between the sprockets
.
Can you use a 7 speed shifter on a 8 speed bike?
The takeaway is that
you can use an 8sp cassette with a 7sp shifter
and expect it to index flawlessly. You can also space a 7sp cassette onto an 8sp hub by putting a 12t or 13t sprocket from an old cassette behind it, so long as the rivets don’t interfere.
Is 8 speed road bike enough?
8 speed drivetrain is great, everything else about it sucks, forks and brakes are terrifying
. My other bikes are mostly 2×9 or 3×9, which works fine, with one 2×11 XT. The 2×11 is the clunkiest of the lot, really does not feel like a high-end drivetrain.
How do I know if my cassette will fit?
Sprockets vary in size according to the number of teeth they have. A cassette may therefore be sized as 11-32t. The first number refers to the number of teeth on the smallest sprocket (the highest gear, for fast pedalling at speed) and the second number to the biggest sprocket (the lowest gear, for climbing hills).
Can I fit a bigger cassette on my bike?
Yes, almost any bike is compatible with bigger cassettes
, bike drivetrain is groupset of components that works in perfect harmony, any miss reconfiguring can break the perfect functionality of the system, parts that need to be changed and reconfigured when putting bigger cassette which is long-chain, wide cage …
Are 8 and 9-speed cassettes interchangeable?
8 and 9-speed derailleurs have the same rear shift ratio but only when both models are made either by Shimano or SRAM. In consequence,
a 9-speed derailleur can work just fine with an 8-speed cassette produced by the same brand
. If the bicycle uses index shifting, the shifter will have to be designed for 8 speeds too.
How do I change my 7 speed to 8 speed?
How do I update my free wheels?
How do I upgrade my freewheel?
Are 7 speed cassettes interchangeable?
Replacing a worn 7-speed cassette with a new one avoids the need to replace anything else, except the chain
. As of 2010, many bicycles are still being sold with 7-speed freewheels. When you need to replace a wheel, you may upgrade to one with a 7-speed cassette Freehub and avoid having to change the shifters.
Are 6 and 7 speed cassettes interchangeable?
6 and 7 speed have different spacing, 8 is slightly different to 7 as well. If the bike is from post 1989 or so it will have a block not a cassette, and a cassette won’t go on the hub.
If it’s a 6 speed cassette it may have a threaded top cog meaning a modern 7 speed cassette won’t fit either
.
Are all 8-speed cassettes interchangeable?
Most Shimano-compatible freewheel bodies accept 8-speed cassettes
.. Note the following exceptions: Aluminum 10-speed freehub bodies with taller splines work only with 10-speed sprockets. The wider 8-speed cassette does not fit on the narrower 7-speed body.
Can I use an 8 speed shifter with a 7 speed cassette?
It will work but as JackM
. states make sure you limits are adjusted precisely. You also have to decide if you want to risk over shifting on the low gear or high side.
Can I use 7 speed Rd on 8 speed cogs?
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.
Can I use 7 speed shifter with 9 speed cassette?
If you used a 7 speed cassette, with a 9 speed shifter and 7 speed derailleur you would not pull enough cable and the shifts will get mangled
. If you are currently on 7 Speeds, this means you have a 7 speed wheel that will most likely NOT take a 9 speed cassette.
What is 8 speed bike?
The 8-speeds use what most folks would probably refer to as
the “standard” gearing set-up on a bike
– different-sized external cogs are shifted through by moving the chain with a derailleur (that thingy that hangs down with the “little pulley” on it that adjusts the chain’s tension and slides it left and right to …
Is 7 gears enough on a bike?
In terms of how the number of gears affects the overall ride of the bike, a 21-speed is generally faster with smoother transitions and pedaling.
The 7-speed is adequate for most riders
, which is why many people choose the slower option.
What is a 6 7 8 speed chain?
| Chain no. of speeds Outer width in mm | All 6-speed 7.8 | All 7-speed 7.3 | All 8-speed 7.1 | All 9-speed 6.5 – 6.7 |
|---|
How do I know what cassette is compatible with my bike?
The rule of thumb for choosing the right bike cassette is that
the closer the number of “teeth” from the largest and the smallest cogs
, the smaller the variation between gears, which ensures a smooth gear change.
Can I fit a 10 speed cassette on a 7-speed hub?
Condensed answer:
If you have a 7-speed specific hub, you won’t be able to install a 10-speed cassette on it because the hub will be too short
. If the hub isn’t 7-speed specific, and actually designed for more speeds, you will be able to install a 10-speed cassette on it.
How do you change a 7-speed cassette?
Will a 11 speed cassette fit on a 7-speed hub?
11-speed MTB hubs also use 135mm spacing unless the system is boosted in which case the dropouts have to be even further apart. Therefore, if you’re trying to combine an 11-speed hub with a 7-speed cassette on a 7-speed frame, you will face a compatibility issue –
the hub won’t fit into the frame
.
Will a 10 speed cassette fit on an 8-speed hub?
Condensed Answer:
Shimano and SRAM 10-speed cassettes can be installed on 8-speed hubs
because 8,9 and 10-speed cassettes have similar widths. However, a Campagnolo 10-speed cassette won’t fit on an original 8-speed hub due to incompatible spline designs.
