Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.rdtompki
11-05-09, 09:04 AM
I run mountain bike pedals on my tandem. The stoker finds the M505 pedals easier to clip out of than our A520's and as a captain I really want a double-sided pedal, but I suspect these were bottom-of-the-line when available. Other than the weight advantage can someone comment on the pros/cons of the various double-sided SPDs (M540, M520, M770, M970)? The 540 and 770 show as 350g/pair, the 970 as 325g/pair. Shimano doesn't list a weight for the 520 which are no doubt heavier. Are there durability differences? Do the more expensive variants have smoother mechanics?