Cassette questions

My bike is a hardtail carrera vulcan from 2011. It should have and 8 gear cassette but the previous owner has either changed it to 7 or thrown out the 8th gear.
I'm now wanting to put an 8 speed cassettte back on. i have a shimano m 475 hub on the back which is wearing very well so i'm sticking with it until it finally packs up.
Is there a certain type of cassette i need or in the 8 speed bracket they are all pretty much basic and standard fit? What is the difference between 30 / 32 / 34 teeth on the largest cog, in terms of effort / ease of pedalling etc ? They seem to only have 11 teeth on the smallest cog.
Any recommendations?
I'm now wanting to put an 8 speed cassettte back on. i have a shimano m 475 hub on the back which is wearing very well so i'm sticking with it until it finally packs up.
Is there a certain type of cassette i need or in the 8 speed bracket they are all pretty much basic and standard fit? What is the difference between 30 / 32 / 34 teeth on the largest cog, in terms of effort / ease of pedalling etc ? They seem to only have 11 teeth on the smallest cog.
Any recommendations?
I don't know enough to make smart r's remarks about peoples choice of parts 'n' things, yet!
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There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools
There is a big difference between 30t and 34t on rear using the small front ring. 34t will make you be able to climb steep sections, but by peddling fast (but moving very slowly). As for the 11t you will rarely use that, I probably don't use mine for about 99.95% of the time.
If you are unsure, go for a 11-34 and get a new chain fitted. The old chain might (most probably will) wear out a new cassette prematurely.
Kona Jake the Snake
Merlin Malt 4
I have a couple of useable 8speeds, PM me if you want one cheap.
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
The Sons Scott Genius RC20 build
CS-HG41 8 speed is available in 11-30, 11-32 and 11-34 combinations, see WIGGLE HERE
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools
I know, just in case the orginal spec was required really with it being changed to something dodgy.
VOODOO CANZO
Come and see me at https://www.facebook.com/biketyke/
It is recommended on the wiggle link ^^^ up there, that i should use a HG chain. Anyone have a different recommendation for the chain or is it just a case of at this end of the scale choice is limited?
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools
11-32 will be the same range, but the steps in the middle may be different. And gearing depends on the front chainring size, and wheel size too.
VOODOO CANZO
Come and see me at https://www.facebook.com/biketyke/
7speed shimano cassette and the lockring has 12 teeth grooves in it but when i look at park tools for the part i need they list them as sr-1 and fr-1 compatible.
What does this mean and how do i identify which one i need?
VOODOO CANZO
Come and see me at https://www.facebook.com/biketyke/
http://www.ebay.co.uk/itm/Icetoolz-Cass ... vi-content
VOODOO CANZO
Come and see me at https://www.facebook.com/biketyke/