is carrera zelos 8+ speed compattible

tonymon1808

hi just a quick question about the carrera zelos

what is the highest speed casset it is acceptable of accepting? its stock comes with a 7 speed.

thanks

kingofthetailwind

The mechs and shifters will be 7 speed, so it will only take a 7 speed cassette.

It's cr*p though. Check out a Carrera TDF or a Triban 3 from Decathlon instead.

tonymon1808

thanks for the reply. very helpful.

freezing77

Are you sure that this bike has a cassette fitted?, halfords website would indicate that it has a screw on freewheel

http://answers.halfords.com/answers/4028/product/325248/questions.htm
http://sheldonbrown.com/free-k7.html

tonymon1808

freezing77 wrote:

Are you sure that this bike has a cassette fitted?, halfords website would indicate that it has a screw on freewheel

i wasn't aware there were two possibilities of freewheel systems. you are correct it is fitted with a screw on freewheel.
what does this mean in terms of being able to upgrade my cassette?

tonymon1808

or would it involve upgrading the mech and shifters as previously suggested?

freezing77

tonymon1808 wrote:

or would it involve upgrading the mech and shifters as previously suggested?

Irregardless of what you have if you wish to change to 8 speed it will require a change of shifter. Your current mech will be ok. May be a good idea to change the chain at the same time.

I see that 8 speed screw on freewheels are available.

All modern systems use a freehub and cassette, freewheels are very much old technology.

freezing77

But as someone has already said it is probably not worth it. 8 speed STI's about £95, freewheel £15-20, chain £10.
Plus tools for freewheel removal say £20.

tonymon1808

the cause of this question was wanting to upgrage the wheel set and seeing as majority of wheels i could find were for 8+ speed i thought it would be nice to upgrade the cassette at the same time.
what wheelset would you recommend if i wasnt to change the cassette then?

freezing77

Your choice will be rather limited as I alluded to previously most modern wheels are designed for freehubs and not freewheels.

Your other option is to buy standard cassette type rear whheels and buy a 7 speed cassette, I was unsure if they are still made but it appears they are.

You will need a spacer
http://www.edinburghbicycle.com/products/wheels-cassette-spacer-7-speed-8-speed

Wheels
http://www.ribblecycles.co.uk/sp/road-track-bike/wheels-factory-built-wheels-factory-road-tri-shimano-r501-standard-spoke-clincher-wheels-pair/shimwhfr202

Cassette
http://www.evanscycles.com/products/shimano/hg41-7-speed-cassette-ec029802?country=GB&currency=GBP&utm_content=mkwid__pcrid_17321847296_kword__match__plid_&gclid=CIiQg-7f5bwCFeKWtAoddxEAfQ

But check with regard to the freehub fitting and the cassette lockring.

tonymon1808

would the distance between the dropouts cause any issue with your 2nd suggestion? what is an acceptable distance between drop outs?

freezing77

Standard road spacing is 130mm, you may have 126mm. Measure and see.

I am fairly sure that the wheel would fit or be made to fit.

It is possible that you have 128 allowing either 126 or 130 wheels to be fitted.

tonymon1808

just checked it is 130mm.
so would this allow me to use any modern wheels? as long as the hub fits the 7 speed cassette you suggested?

freezing77

tonymon1808 wrote:

just checked it is 130mm.
so would this allow me to use any modern wheels? as long as the hub fits the 7 speed cassette you suggested?

Yes a standard road bike wheel will fit.
You need to make sure the cassette is hyperglide, not too sure any uniglide cassettes are still in existance but they may be at 7 speed.

The cassette quoted previously is hyperglide hence the HG in the part number.

tonymon1808

thanks for the useful information, you have been very helpful and it is highly appreciated.