sprocket wear

[Visionset]

How badly worn is this? (Say on a scale of 0-10. 10
being new, 0 being chain slip on a matched and equally
worn chain).

http://hotpud.com/beta/misc/sprocket.jpg

Since a new cassette is £30 I guess my old adage of 'wear
out chain & block together then replace both' may not apply.

Is it viable to just renew the smaller sprockets? Are these
economically available?

--
Mike W

[Mseries]

VisionSet wrote:
> How badly worn is this? (Say on a scale of 0-10. 10
> being new, 0 being chain slip on a matched and equally
> worn chain).
>
> http://hotpud.com/beta/misc/sprocket.jpg
>
> Since a new cassette is £30 I guess my old adage of
> 'wear out chain & block together then replace both' may
> not apply.
>
> Is it viable to just renew the smaller sprockets? Are
> these economically available?

it is viable but sometimes not economical. SJS do individual
ones for about £6 each. You are mean't to get ones from the
same set for Shimano, see Sheldon Browns site for this. I
haven't usually bothered and my shifting is OK (with
downtube levers)

[Peter B]

> VisionSet wrote: How badly worn is this?

I really can'ttell from the piccie.

> Since a new cassette is £30 I guess my old adage of
> 'wear out chain & block together then replace both' may
> not apply.

More like £25 for a 105 or XT from: http://www.chainreactio- (http://www.chainreactio-/)
ncycles.com/categories.asp?category=Cassettes

>
> Is it viable to just renew the smaller sprockets? Are
> these economically available?

Personally I wouldn't bother. Some folks recommend frequent
chain replacement to slow down cassette wear but I prefer to
run both cassette and chain into the ground and when they
start to play up replace 'em both, job done!
--
Regards, Pete

[Pete Biggs]

VisionSet wrote:
> How badly worn is this? (Say on a scale of 0-10. 10
> being new, 0 being chain slip on a matched and equally
> worn chain).
>
> http://hotpud.com/beta/misc/sprocket.jpg

I think it might have a fair bit of life left, but it's too
hard to say from what it looks like, really.

I would replace if chain skips on it, otherwise I'd just
carry on using
it.

> Since a new cassette is £30 I guess my old adage of
> 'wear out chain & block together then replace both' may
> not apply.

Measure chain and replace chain if it's too worn* if you
want to prolong life of cassette and chainrings. THEN
replace sprockets or cassette if any skipping.

* http://www.sheldonbrown.com/chains.html

Worth changing just the smaller sprockets if you can get
them cheap, as these wear quicker than larger ones.

Cassette prices: http://www.parker- (http://www.parker-/)
international.co.uk/components.htm

~PB

[Peter B]

"Pete Biggs" <pclemantine{remove_fruit}@biggs.tc> wrote in message
news:c4n28u$2ktaf4$1@ID-144931.news.uni-berlin.de...
> Measure chain and replace chain if it's too worn* if you
> want to prolong life of cassette and chainrings. THEN
> replace sprockets or cassette if any skipping.

Prolly ok for road riding but through bitter experience I
found the problem of doing this on mtbs is that the new
chain won't skip on the old cassette when test riding
around the block at home but will start skipping shortly
after commencing an off-road epic putting a damper on the
rest of the ride, which is why I now always replace them
as a set :-(
--
Regards, Pete

[Peter B]

"Peter B" <peter28@btinternet.com> wrote in message
news:c4mpvl$4p$1@titan.btinternet.com...
>
> > VisionSet wrote:
> > How badly worn is this?
>
> I really can'ttell from the piccie.
>
> > Since a new cassette is £30 I guess my old adage of
> > 'wear out chain & block together then replace both' may
> > not apply.
>
> More like £25 for a 105 or XT from: http://www.chainreact- (http://www.chainreact-/)
> ioncycles.com/categories.asp?category=Cassettes

Which should have said "More like £25 for a 105 or LX"
....XT are £35. But OTOH Tiagra or Deore are only £20.
--
Regards, Pete

[Mseries]

Peter B wrote:
> "Peter B" <peter28@btinternet.com> wrote in message
> news:c4mpvl$4p$1@titan.btinternet.com...
>>
>>> VisionSet wrote:
>> > How badly worn is this?
>>
>> I really can'ttell from the piccie.
>>
>> > Since a new cassette is £30 I guess my old adage of
>> > 'wear out
>> chain & > block together then replace both' may not
>> apply.
>>
>> More like £25 for a 105 or XT from: http://www.chainreac- (http://www.chainreac-/)
>> tioncycles.com/categories.asp?category=Cassettes
>
> Which should have said "More like £25 for a 105 or LX"
> ....XT are £35. But OTOH Tiagra or Deore are only £20.

Take a look at Parker International I am sure they are
cheaper there.

[Peter B]

"MSeries" <skankmartin@hotmail.com> wrote in message
news:c4ocba$2krldr$1@ID-207671.news.uni-berlin.de...
> Peter B wrote:
> > Which should have said "More like £25 for a 105 or LX"
> > ....XT are £35. But OTOH Tiagra or Deore are only £20.
>
> Take a look at Parker International I am sure they are
> cheaper there.

Only marginally for a 105 once postage is added,
Chainreaction are post free. And Parker don't list mtb
cassettes if that's what our friend needs. (Nah, nah, na,
nah nah :-)

However, I will check out Parker in future for my own
purchases, ta very much :-)
--
Regards, Pete