Chris James
Über Member
- Location
- Huddersfield
Smokin Joe said:You don't get anymore gearchanges or crossover on a compact that on a standard. It's exactly the same except with a lower range of gears, just choose your ratios to suit your riding needs and they are just as good as anything else.
Ah, but the devil is in the detail. I woudl suggest that most people riding compacts probably go along the flat in pretty much the same size gear as someone with a normal road chainset. It's just that they want a bit of extra help on the hills, as opposed to routinely using a lower gear all the time.
But the compact setup isn't idela for standard riding.
For example for me a pretty standard gear is the high 60s / 70 inches. I would have thought this is fairly typcial, given that a 68 in gear pedalled at 90 rpm gives a speed of just over 18 mph.
This gear is about the middle of a 12-25 cassette on a 52/42/30 triple.
It is towards the lower third (but still very usable) of the cassette on a 53 tooth chainring and towards the higher end when using the 39 tooth chain ring. So this still works well, I can coast in either chain ring and choose the bigger ring if I expect to be turning bigger gears and the smaller if the raod starts going up more.
But with a compact then 'my' normal cycling gears sits nestle around the big chain ring big sprocket, with a bad chain line. And if the road profile starts to get a bit rolling then I will be chiaging chain rings regularly, whereas the other setups allow me to avoid front changes unless the road profile changes dramatically.