biomac.biz is a good start as this is where the inventor of the mid-foot cleat shoe sells his wares. he has support from Joe Friel and Sydney-based bikefitterv (and cyclingnews Q&A guy) Steve Hogg. Both guys talk about a large increase in efficiency, although Steve reckons that he has seen a weakening in his “jump” in the sprint at the end of crit races.
I have experimented to the extent that my time cleats are slammed all the way back. I can’t speajk for my efficiency, but it certainly has been better for my knees and I feel markedly stronger on climbs. All this is road and MTB related.
One of Steve Hogg’s issues is the need for a rethink in frame angles to accommodate the new cleat position. Obviously the saddle height has to be reduced and thus there is a need for a longer top tube and lower front end.
What might the implications for TT and triathlon be?
check out: http://www2.trainingbible.com/joesblog/2007/02/biomac-shoes.html
p.s. there are a number of Euro pros using Goetz Heine’s Biomac shoes