Rear Cassette ratio

[David5416]

I have recently bought a CUBE AGREE GTC PRO ( although its not even been out the house yet ) i have it hooked up to my turbo trainer and have been doing a few online training vids on Youtube. The problem was i did know what gear to be in as they were talking 15,16, 17 on the back etc, I am new to road bikes and have no idea what the rear gear ratio was until i counted them ALL today.
I counted from small cog to the large cog and got these numbers 12,13,14,15,17,19,21,24,27,31 it is a Shimano cassette but not sure which one, do these numbers sound right ?????

 

[JoeyB]

I'd guess it is a 12-30t and you miss counted the last cog?

 

[MikeW-71]

^^ this. It'll be a Tiagra 12-30t

 

[JoeyB]

^^ this. It'll be a Tiagra 12-30t

Or Ultegra CS-6700

 

[shortone]

The teeth number should be stamped on to each cog.

 

[David5416]

Thanks Joey , just looked at the Tiagra and the Ultegra and it looks more like the Tiagra. And you are probably right i must have miss counted. Are these cassettes ok in your opinion ? i am going to buy a cheap rear wheel for my turbo so will be needing the cassette etc. Don't know if it will be worth upgrading the one on my better wheel at the same time.

 

[David5416]

Cant see any numbers on the cassette but then again i can't see much lately ha ha

 

[DooDah]

I think it will be Tiagra. The Ultegra would be on models Cube Agree GTC Race and above, I think.....

 

[DooDah]

Cant see any numbers on the cassette but then again i can't see much lately ha ha

They can be really difficult to see, so much so counting is normally the best option. Nothing wrong with Tiagra cassettes BTW

 

[JoeyB]

Thanks Joey , just looked at the Tiagra and the Ultegra and it looks more like the Tiagra. And you are probably right i must have miss counted. Are these cassettes ok in your opinion ? i am going to buy a cheap rear wheel for my turbo so will be needing the cassette etc. Don't know if it will be worth upgrading the one on my better wheel at the same time.

Nothing wrong with those cassettes! I think I read the Ultegra cassette gives a smoother gear change, and obviously it is marginally lighter.

 

[David5416]

Nice one DooDah, difficult to see but the way I've just counted difficult to count as well mate ha ha

 

[David5416]

If i went for the Ultegra Joey would it be compatible ? got an Ultegra rear mech already.

 

[JoeyB]

If i went for the Ultegra Joey would it be compatible ? got an Ultegra rear mech already.

Yes, assuming you have a 10 speed cassette on there already (which you obviously do) and you replace that with a 10 speed Ultegra cassette. Wiggle have them on sale at the moment for about £33 I think...good price.

 

[David5416]

That does sound a good price , i will order one later and get a cheap wheel from Decathlon.

 

[David5416]

As i ve now got a compact and know i will be blowing out of my A--- on the first hill should i go for the 12 -30 ??