Originally posted by: Jessica69
If you're hoping to find dual-sided platform/SPD hybrid pedals, prepare to be disappointed because they don't exist.
Why, you ask? Simply due to the construction and intended purpose of SPD's.
First, consider what SPD's are and why you won't find dual platform/SPD pedals. SPD's were created for mountain biking.....and while some road bike shoes are indeed SPD compatible in their bolt mounting in the sole, SPD's weren't really meant for road bikes. If you look at most roadies, they're using pedals like Look and Time-styled or Speedplay. The cleats are large and hang off the bottom of the shoes, shoes which are incredibly stiff. They're so stiff, in fact, that they are a beast to walk in, but road bike shoes are not made for walking, only for riding and to maximize energy transfer from your leg/foot into the pedal/crank arm. And, yes, roadies do walk, but duck walk, even if one has the caps for the cleat. So, you have an ultra stiff shoe with the cleat hanging off the bottom of the shoe. (And most roadies don't use SPD's for a real, big reason even if their shoes are SPD compatible.....the small cleat used in SPD pedals can and will give you a hot spot during and after a long ride. Something about having a cleat that's about 1" x 1" tends to concentrate all the pedaling pressure in one tiny spot on the bottom of your foot....and can end up hurting a bit. True road bike cleats, on the other hand, are quite large in comparison and spread out that pressure over a much larger area of your foot.....ends up not hurting.)
Now, contrast that setup to a mtn. bike SPD setup. The cleat is recessed into the sole of the shoe to allow walking. This is due to the fact that while mtn. biking, it may be very necessary to dismount and walk the bike up a climb too steep or slippery to pedal up, or ford a stream too deep to safely ride across, or a whole host of reasons. And since mtn. biking SPD pedals make allowances for dismounting and walking by recessing the cleat into the sole of the shoe, the clipping mechanism of the pedal has to extend upward into the recess in the shoe to engage the cleat. Additionally, the SPD mechanism, being very "out in the open" like they are, are supposed to shed mud easily...a necessary benefit when you're mounting and dismounting and trying to clip in with muddy shoes.
So, now you have a mechanism that is higher than a flat platform.......so if you have SPD mechanisms on both sides of a platform pedal, you'd never touch the platform as the SPD mechanism is higher than the flat platform is. Therefore, you will only find single-sided SPD/platform hybrid pedals. And these pedals, while they work, are miserable for either duty. The pedal is overly heavy, they're not made as well as single duty pedals, be it a platform or SPD, and you're always on the wrong side no matter the instance.....you want the SPD and they're facing down so you have to force the SPD side up. You want the platform side, but the SPD side is heavier, so they're tilted wrong again. A pitiful compromise of a pedal.
You're much better off getting the mid-line Shimano SPD's and a nice set of platform pedals and a pedal wrench. You'll find you're going to use the SPD's more than the platforms anyway, but when you just want to cruise in tennis shoes or the like, it'll take two minutes to take the SPD's off and put on the platforms.