Tricross Sport 2009 Rear Cassette

Kieran_Burns

Does anyone know the size of each cog for this?

I'm curious as I tend to go most everywhere in one gear: the middle cog of the rear cassette and the big chain wheel

Now the chainwheel is a 50 tooth jobbie but I'd be curious to know what I am cruising in, in comparison to the SS crowd

I know its a 11-32t cassette but I can't find the breakdown of each component anywhere

Fireblade96

[Facetious]

You have two easy options:

1. Number of teeth is stamped on each cassette sprocket.
2. Count 'em !


[/facetious]

I know, cos I just went through the same exercise yesterday working out what GI I use most.

Kieran_Burns

LOL!

Yeah I know.... but it's dark in the garage and I thought someone might know :P

lost_in_thought

Yeah, a good question - is there a standard set of sprockets that make up a 10sp or 11sp cassette - for example if it's 11/25 is it always going to be 11/13/15 etc ?

Fireblade96

OK, to prove I can be useful....

11.12.14.16.18.21.24.28.32.

From here
http://www.sjscycles.co.uk/product-Shimano-Shimano-Deore-HG50-9-Speed-Cassette--11-32-8136.htm

Yes, I am bored. I *really* need to get some work done...

Kieran_Burns

Yay!

Cheers for that

So that means I am cruising on 700x32c CX tyres on a 50/18 gearing.... goes looking for calculator

While I'm looking - that gearing has me holding 16-18mph with blips up to 20ish where I usualy go up to 50/16. Have I got my cadence about right? (personally it feels okay but what do I know?)

lost_in_thought

Fireblade96 wrote:

OK, to prove I can be useful....

11.12.14.16.18.21.24.28.32.

From here
http://www.sjscycles.co.uk/product-Shimano-Shimano-Deore-HG50-9-Speed-Cassette--11-32-8136.htm

Yes, I am bored. I *really* need to get some work done...

Now find mine!

Both Campag,
10sp 11/25
11sp 11/27...

Yaaaaaaaaaay!

Kieran_Burns

Wheel Diameter: 24.50 inches
Gears: 30/39/50 11-12-14-16-18-21-24-28-32

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SP CRxFW GI GIdf DI diff DF PRPM RT

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1> 30x32 22.97 14.29% 72.16 10.31 6' 0.16" 878.07 1:0.94
2> 30x28 26.25 13.75% 82.47 11.34 6'10.47" 768.31 1:1.07
3> 39x32 29.86 2.56% 93.81 2.41 7' 9.81" 675.44 1:1.22
4> 30x24 30.62 11.43% 96.21 11.00 8' 0.21" 658.55 1:1.25
5> 39x28 34.12 2.56% 107.21 2.75 8'11.21" 591.01 1:1.39
6> 30x21 35.00 9.38% 109.96 10.31 9' 1.96" 576.23 1:1.43
7> 50x32 38.28 4.00% 120.26 4.81 10' 0.26" 526.84 1:1.56
8> 39x24 39.81 2.56% 125.07 3.21 10' 5.07" 506.58 1:1.62
9> 30x18 40.83 7.14% 128.28 9.16 10' 8.28" 493.91 1:1.67
10> 50x28 43.75 4.00% 137.44 5.50 11' 5.44" 460.99 1:1.79
11> 39x21 45.50 0.96% 142.94 1.37 11'10.94" 443.26 1:1.86
12> 30x16 45.94 11.11% 144.32 16.04 12' 0.32" 439.03 1:1.88
13> 50x24 51.04 2.86% 160.35 4.58 13' 4.35" 395.13 1:2.08
14> 30x14 52.50 1.11% 164.93 1.83 13' 8.93" 384.15 1:2.14
15> 39x18 53.08 9.89% 166.77 16.49 13'10.77" 379.93 1:2.17
16> 50x21 58.33 2.37% 183.26 4.35 15' 3.26" 345.74 1:2.38
17> 39x16 59.72 2.56% 187.61 4.81 15' 7.61" 337.72 1:2.44
18> 30x12 61.25 9.09% 192.42 17.49 16' 0.42" 329.28 1:2.50
19> 30x11 66.82 1.85% 209.92 3.89 17' 5.92" 301.84 1:2.73
20> 50x18 68.06 0.29% 213.80 0.61 17' 9.80" 296.35 1:2.78
21> 39x14 68.25 12.18% 214.41 26.11 17'10.41" 295.50 1:2.79
22> 50x16 76.56 4.00% 240.53 9.62 20' 0.53" 263.42 1:3.12
23> 39x12 79.62 9.09% 250.15 22.74 20'10.15" 253.29 1:3.25
24> 39x11 86.86 0.73% 272.89 2.00 22' 8.89" 232.18 1:3.55
25> 50x14 87.50 16.67% 274.89 45.81 22'10.89" 230.49 1:3.57
26> 50x12 102.08 9.09% 320.70 29.15 26' 8.70" 197.57 1:4.17
27> 50x11 111.36 0.00% 349.86 0.00 29' 1.86" 181.10 1:4.55

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SP CRxFW GI GIdf DI diff DF PRPM RT

---

So what the hell does all that mean?

Kieran_Burns

Hmmm....

now I read it, it's telling me I can use the middle ring for anything beyond really 'fast' cycling.

I can use the lowest gears on the rear cassette and the middle ring and get the same flat line speed and cadence, but I gain the advantage of greater flexibility of gear selection. (remembering that you should not use the biggest two cogs 50-32)

SpinningJenny

Kieran_Burns wrote:

LOL!

Yeah I know.... but it's dark in the garage and I thought someone might know :P

They sell these things called torches, these days. Quite the latest thing they are!!

Still, I didn't know that they stamped the number of teeth on the sprocket. I need to get down and dity with my chainset, clearly :twisted:

Kieran_Burns

In my defense I have been humping 3'x2' & 2'x2' slabs to the waste disposal site; not to mention a ton of rubble, old desks, shelving units and knackered double-glazing units all in my golf, which is now looking very tired (as am I) so using my brains is a bit difficult at the moment.

Mind you - the enquiry did elicit some extremely useful information I did not know about my bike, and gearing in general.

It also sounds like my gearing is about the same as the SS lot (ish) so that was useful to learn as well.