Originally Posted by
slowbutfast
I put a powertap on my recumbent to find out where the most power for me was produced with the least amount stress on my legs. I found I produced more power, 40+ watts more, with the cleats in the forward position on my shoes.
It's not just power production, it's protecting your Achilles tendon. The farther forward you place the cleats, the more stress on the tendon. Listen to your body and if there's any pain, be prepared to move it back pronto!