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| *Vultures Knob>>>Cycling |
It is time for new crank on my touring Trek 520? |
I run 52 - 11 and this gearing is sometimes little to high when fully loaded for long distances touring trips . On another way I feel really happy when on credit card tour because is fast . There is two option for me , 48 or 52 cranks . What is your opinion ? I am strong rider and I like to hear comments from experienced riders please . I'm a little confused as to what you are asking. I doubt that you are talking about a single speed. A trek 520 usually comes with a triple at the front and what ever at the back depending on its age.(9?) If this is the case I'd stick with the 52. It gives you the flexibility to go faster unloaded. There is no reason to ride 52 - 11 all the time. If you sight the chain wheel to the cassette you will find a straight chain usually aligns with about the third cog in on the cassette.(least chain wear). This will be a lower gear ratio than you would get by putting a 48 tooth chain wheel on anyway. If you have a descent you also have the option to change up. Whoa! I'd say anyone who can ride a 130 inch gear should do whatever the hell they want. I'm assuming that you are riding a single speed or fixed gear? A 48 tooth chainring will get you like a 122 inch gear if you continue to run an 11 tooth freewheel cog. If it were me, I'd go with the smaller chainring and a larger cog, like a 17 or 18. That's if I was riding unloaded on relatively flat terrain. Schlumpf makes a two speed bottom bracket that would give you the option of a super high gear, as well as a more reasonable gear for loaded touring and hilly terrain. I don't know their http right off hand, but type in Schlumpf, and I'm sure you'll find it. White Industries makes a freewheel called the Dos, which is basically two cogs stuck together on one freewheel mechanism. Combined with a mountain or road double up front, you could have two different gear ratios without sacrificing good chainline. If you used the same number of teeth total in each of your gears, (for example, 42-18 and 44-16), you'd have two different gears, and your axle would remain in the same place (no brake adjustments needed!). Bottom line: if it doesn't feel good, don't do it. |
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