How many speeds can I get?

[jazzibizznizz]

Hi,

I need some help please - my bike knowledge has a gaping hole after about 1991! I bought a 2007 Specialized Stumpjumper off t'bay a few years ago with almost all of its parts swapped for cheap crappy ones. I've been gradually building it back to its original spec so that my daughter can use it, but I have got stuck.

I am hoping to run it with 2 rings at the front, but I'd like to know how many sprockets I can get at the back. The hubs are Deore m525, and the space between the drop-outs is 136mm. Deore seems to be available in 8, 9, 10 or 11 speeds. So my question is how many sprockets can I fit at the back? (it's using Sram X9 shifters & mech, if that makes a difference)

Thanks,

Ben

 

[66 triumph daytona]

Re:

You can run up to 11speed.

 

[hamster]

..but you need to match the speed to the shifters.

 

[jazzibizznizz]

..but you need to match the speed to the shifters.

OK, so is that a case of getting spacers in between the sprockets on the freehub?

 

[hamster]

..but you need to match the speed to the shifters.

OK, so is that a case of getting spacers in between the sprockets on the freehub?

Yes, different speeds use the saame space on the hub but pack more into the same space. The shifter has only so many clicks. So a 9 speed shifter will only allow 9 shifts spaced at 4.35mm. Furthermore, SRAM shifters and mechs are not compatible with other brands as they use more cable pull per click (a good thing, they are more tolerant of mucky cabling).

Most of what you want to know is here: https://www.cyclinguk.org/cyclists-libr ... s/shimergo

 

[66 triumph daytona]

Re:

I`d recommend getting a cheap narrow wide chainring an 11 speed Deore shifter and rear mech and go 1x11.

 

[My_Teenage_Self]

Surely your shifters dictate the number of gears? you can go up to 12 speed on your hub if you really want.

 

[jazzibizznizz]

Re:

I hadn't thought to check how many clicks were on the shifter (doh). It's got 8 clicks, so I need to look for a 9 speed cassette.

Thanks for all the advice, and thanks for the link to the article on gear ratios and compatibility, etc. I actually find all that stuff really interesting (I know, I know, I'll get my coat)

 

[hamster]

Re: Re:

It's got 8 clicks, so I need to look for a 9 speed cassette.

Don;tdo yourself down. I have spent hours trying to explain to people that the number of clicks is one less than the number of speeds...and bought a fair few shifters mis-described like that too!