Google Steve Hogg bike fitting, I recall he may have covered it in one of his articles.

Joe Friel advocates it in his blog, too.

i'm trying to try it, but getting the cleat interface right has been a hassle. Attempted to use Speedplay's conversion plate w/ my three-bolt shoes and it was a big fail, screws wouldn't hold securely. You might have better luck with drilling two-bolt cleats farther aft, which he recommends.

Really? Did you use blue loctite? I've had mine for over a year with zero issues and I know many others have been using theirs issue-free for years.

To the OP, if you want to approximate mid-foot, the new Shimano shoes have the cleat holes fairly far back to begin with and you can move them a few mils farther back still. Push your cleats as far back as they'll go and you'll get pretty close to mid-foot.

I spent an hour on it and then had my LBS mechanic try, with no luck. The screws that came with the kit were not long enough. If speed play makes longer screws that may be the answer.

Are the new Shimano shoes you're talking about 4 bolt or 3 bolt?

3 bolt. I have a pair of R-171s in black in 44 "wide" and they're awesome :)

I've been riding the Speedplay conversion plates mounted on Bont 3 bolt shoes for a couple of years with absolutely no problems. I did mount using loctite as I've seen the Speedplay screws back out without it.


YMMV,

Hugh

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Genetics load the gun, lifestyle pulls the trigger.

thanks just had a look . . . on sale in my size and that's always dangerous :>

Are Shimano's the only ones doing this? From the pic it doesn't look that far back (it's as close as I've seen in a normal road shoe)...are there any other manufacturers doing this?

I'm the wrong person to ask -- maybe somebody else knows?

I wouldn't be surprised to see a shoemaker responding in the near future -- seems like a small but keen market is out there already.

http://www.ncbi.nlm.nih.gov/pubmed/23360149

I have all my road/tri shoes set up with the Speedplay extender plate. Love the midsole position. Much easier on my knees and makes me feel like I have more power. (Don't think I actually have more power but it just feels better).

I've never had any problem with the toe overlap thing that I can recall

Take a look at the pic below (R171). You can move the mounting holes to the back of the slots and then rack your cleats all the way back. If you're using SPD-SL cleats the axle will fall over the back edge of those slots. It's not a true "mid-foot" by any means but it's as far back as I've found on any stock shoe. Edit: just looked at my shoes. Axle falls over the where you see the mounting holes/white lines in the pic below. Sorry. Still pretty far back.