My wife and I just switched from SPD pedals to Speedplay for her and Look for me (to go with the new Northwave Vertigo Carbon road shoes). The increased surface area should relieve my Morton's Toe and increase power transfer for both of us, as we understand it.
After getting the bikes re-set up for the change in pedal reach etc. we took a 6 mile trip around Rte 66 to give them a test run this evening and encountered a few problems. The Look pedals are somewhat difficult to get into since they hang almost upside down, Not too terrible, though I did have to pedal uphill one-legged until I could get my right foot clipped in - attempts to apply any pressure before getting into the clip resulted in a foot slip. What's the secret?
Of more concern is my wife's trouble just getting clipped into the Speedplays! We started out with her on the trainer practicing getting clipped in and out. There doesn't seem to be any adjustment for tension, the instructions just say to push down. Sometimes jumping up and down on the pedal doesn't seem to be enough pressure. She managed to feel like she was getting the hang of it before we took our little trip, but it took her about a minute to get clipped in before we pulled away from our house and when we had to stop for an adjustment, there was another struggle to get re-hooked in.
Is there a secret to getting into the Speedplay pedals? Do they break in over time? She is getting really frustrated! These were touted as the best for her knees and even if it is true, she could tear a ligament just trying to clip in!