which cassette?

[ribbleboy]

Hello all. Ive got a 105 10 speed compact groupset and would like a bit more when it comes to the flats as i feel i could go faster My current casstte is 28-12. Any ideas?

 

[Rickshaw Phil]

The simplest thing would be to go for a cassette with an 11 tooth top gear. That will raise your top end gearing by about 10 gear inches (from approx 112 gear inches to 122 gear inches assuming a 50t chainring - quite a noticable increase).

 

[potsy]

Spinning out on the flat?

 

[Peteaud]

How fast are you going

 

[HLaB]

Its easy to change to an 11 tooth, I changed my 105, 12-25 for a SRAM 11-26 to get some more speed downhills and sprints (11t) and a wee bit easier on climbs. I picked up an 11-28 Ultegra cheap though and I used it on Saturday and I was glad of the extra gears again on the Tour of Flanders climb

 

[BikeLiker]

How fast are you going

29.36 mph according to http://www.bikecalc.com/speed_at_cadence, assuming a modest 90 RPM. Must get myself a Ribble!

 

[Banjo]

I often spin out on the flat with my 11/28 cassette. Only when I forget Im in the granny ring on my triple though.

 

[ribbleboy]

Im just feeling like theres something missing thats all. Maybe its because i had a triple beforehand.

 

[Crankarm]

Ditch the boy's compact chainset (50-34?) and get a man's one 53-39 or 53-42. Also if most of your riding is quite flat then get a 12-21 rear cassette. You won't spin out on the 12 rear sprocket on the 53 front big ring.

 

[Rickshaw Phil]

Running a 53 front and a 12 rear gives approx 119 gear inches. Swapping to a cassette with an 11 tooth top is actually slightly higher geared as well as being cheaper.

Just saying.

 

[400bhp]

Ditch the boy's compact chainset (50-34?) and get a man's one 53-39 or 53-42. Also if most of your riding is quite flat then get a 12-21 rear cassette. You won't spin out on the 12 rear sprocket on the 53 front big ring.

Penis extension for bicycles.