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Post by hedkandi77 on Jul 18, 2007 18:05:52 GMT 8
hey PinoyMTBiker peeps... I'm a novice mtbiker and I've noticed lately that whenever I do moderate turns or banking, my platform pedals often hits the ground causing me to jerk and sometimes almost fall off the bike. This also happens in rolling and single track trails. I'm beginning to wonder of my cranks are too long or it has something to do with my rig's geometry.
My bike's a giant trance 3 and cranks are raceface
can anyone help? ;D
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Storm DC
XC Rider
Fat Bikers Bounce Better !!!
Posts: 140
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Post by Storm DC on Jul 18, 2007 19:36:43 GMT 8
edwinaguila is right. If you're turning to your left, make sure your left crankarm is in the 12 o'clock position, same thing if your turning to your right.
This is most important if you're leaning too low on a tight turn.
If you're just coasting along or on a fast descent on a rather straight line, you'll have more control if your crankarms are level and your strong foot upfront.
Hope this helps. BTW, what's your crankarm lenght? 170mm is more or less the standard for an average height guy.
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Post by jr on Jul 19, 2007 4:41:08 GMT 8
Also before the turn you just position your crank arm allign with the rear triangle (3 or 9 o' clock) position. This way after the turn you ready for the pedalling. Happy riding  . |
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Post by wcoastbo on Jul 19, 2007 18:21:00 GMT 8
just to eliminate any questions about your geometry, measure your bottom bracket height and compare with the Giant website. It should be very close, but will vary slightly depending on the tires you use.
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Post by grnhrnt on Jul 20, 2007 15:31:51 GMT 8
Hedkandi77,
This is a very good question for performance ( speed around the turn) and safety (scraping your pedal on the ground and wiping out!).
I think you mean cranks arm length too long. Most common crankarm lengths in the Philippines for Mountain bikes are actually 175mm. So if your is 170 mm then its not the length.
The correct positioning of your crank arm in turns is pedal arm closer to the turn is always up (12:00), Outside pedal always down (6:00) w/ your weight pressed down on the outer pedal. The weighted outer pedal stabilizes the rear wheel by putting weight on the rear wheel for more grip. So going into turns specially from free-wheeling you can back pedal before you bank. It will make you look like pro and is safer.
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Post by puregutz on Jul 20, 2007 16:31:22 GMT 8
Hey Mr. House Music:
It depends of the terrain.
Flat or off camber turns - outside pedal down
Banked turns - pedals should be leveled
On any turn - never inner pedal down
Practice makes perfect! Ride safe dude... ;D
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