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efficient peddle stroke

Old 10-10-14, 04:05 PM
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moneybags
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efficient peddle stroke

How does a new crankset improve performance and would my Specialized Crossroads sport benefit? I do not ride as often as the majority of members here do, but when I get out I like everything to work well. One big improvement I recently done was replace the gear selectors from the grip-twister type to a thumb and index finger mechanism. Having owned this bike for 5 yrs I have only replaced worn tires and a set pf peddles, as one had fell apart some how. Besides keeping the mud from riding up my back and shins I will soon buy fenders also.
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Old 10-11-14, 06:42 PM
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Originally Posted by moneybags View Post
How does a new crankset improve performance and would my Specialized Crossroads sport benefit? I do not ride as often as the majority of members here do, but when I get out I like everything to work well. One big improvement I recently done was replace the gear selectors from the grip-twister type to a thumb and index finger mechanism. Having owned this bike for 5 yrs I have only replaced worn tires and a set pf peddles, as one had fell apart some how. Besides keeping the mud from riding up my back and shins I will soon buy fenders also.
I'm not familiar with the Specialized Crossroads Sport. A new crankset would seem to help if you go to a triple for low climbing gears, assuming you have a double now, but aside from that, what would you hope to accomplish by changing cranksets? That would seem to depend on the type of riding you do, if you don't seem to have proper gearing. You might only need a freewheel with a larger cog to get that lower gear. Fenders are good.
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Old 10-11-14, 07:53 PM
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I am thinking of the shape of the crank-set sprockets and how they transfer power to the wheel. At some point in the past I realized their oval shape and thought something was wrong... but no, all is right! Better then right! Cool! So, has the engineering gone as far that crank-sets would improve efficiency more then what is on my 'stock' ride? I rarely push myself to ride hard so changing sets may not benefit noticeably. Mostly a curious question.
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Old 10-12-14, 05:31 AM
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I don't think a new crank will do much on a 5 year old bike. I think you already hit a major advance going with the trigger shifters. I think the higher end shifters make for a better experience. At 5 years, my brake/shifter cable/housings could use replacing. Tires are probably the biggest difference if the stock ones are not optimal for your type of riding. Otherwise, sometimes it is best to just enjoy the bike for what it is.
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Old 10-12-14, 05:51 AM
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The bike is much older than 5 years if it has biopace. I like biopace myself. You could get a lighter crankset/BB but it would cost about the value of the bike.

If the gripshifts were shifting poorly then they probably just needed new cables/housing but if you're happy with the triggers then good move getting them.

Round rings vs. Biopace is a personal thing. I like Biopace advanced two bolt holes myself. I don't go out of my way to get bio or to remove it. Have it on one bike and it'll stay that way til rings wear out.
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Old 10-12-14, 09:41 AM
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There are a few ways cranks affect performance, but none of it has to do with age but characteristics. For example, lighter weight, stiffness, and low q factor. My feet hurt for awhile when I went from flexy Topline cranks to RaceFace LP. A narrower stance increases cornering clearance and works better for skinny riders.

The biggest difference comes from choosing the proper gearing for your riding conditions instead of a generic gear range chosen by a manufacturer

Ideal crank arm length can also vary from the OEM spec
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Old 10-12-14, 11:39 AM
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Originally Posted by LesterOfPuppets View Post
If the gripshifts were shifting poorly then they probably just needed new cables/housing but if you're happy with the triggers then good move getting them.
My DB has twisties and I remember really liking them compared the the thumb friction shifters my last bso mtb as a kid had. They shifted just fine but now I have triggers on new bike and they're just so much better. The twist ones you have to get your hand in a certain position and apply force to use, the triggers are pretty well effortless up or down without much if any hand re-positioning required @ each shift.
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Old 10-12-14, 12:11 PM
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A lot of people do prefer triggers but I like my gripshift 600s, x-rays and Attacks better than my XTR triggers. The up shift on the right shifter is awkward for me.

And for 7-speed, I'd take the white body gripshift MRX over those crappy Shimano Easy - fire or ye olde first gen rapidfire push - push units any day.

The Sram XX1 11 speed trigger is pretty darn nice, though. If I got XX1, it would be a tough choice between gripshift and trigger.
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