Crankbrothers Stamp 11 Large flat pedals review | Spd Pedals

Cycling shoes usually have quite a stiff sole but this varies greatly depending on their intended use. Clip-in shoes tend to have stiffer plastic soles with rubber lugs for good grip. Soles can have carbon fibre inserts through their length or alternatively just in just the midsole to boost stiffness. A cross-country shoe like this pair of Shimano XC7 SPD shoes has a stiff sole for good power transfer on cross-county, cyclocross and gravel bikes. It has a carbon fibre reinforced midsole but it’s shoe brother, the XC9 has a rigid carbon forefoot for an even stiffer sole.

Shimano’s PD-A600 SPD road pedals have never managed to be much more than a niche product, but the rise in gravel riding is making them more relevant than ever.

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This has the benefit of being easily transferred between bikes, but often the pedal needs to be tightened to a specific torque value to obtain accurate power output values. This means that you will need a torque wrench – a pricy bit of kit, but fairly insignificant relative to the cost of the power meter itself.

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David has been a tech editor on road.cc since July 2012. Previously he was editor of Bikemagic.com and before that staff writer at RCUK. He’s a seasoned cyclist of all disciplines, from road to mountain biking, touring to cyclo-cross, he only wishes he had time to ride them all. He currently resides in the Cotswolds.

Tension is adjustable, though accessing the 3mm hex bolt is awkward. The level varies from tight, to really-friggin-tight. I certainly wouldn’t put a new rider on these pedals, because their tenacious hold can be intimidating. As the cleats wore in and I got used to them though, I steadily increased the tension to about halfway. Any more than that and you might dislocate your knee trying to unclip.

Lohmeyer said he was aware of the wear issue and expected the steel version to be the best choice going forward.

Both the 11s and the 7s use a forged 6061-T6 aluminium body, which is just 13mm deep for improved ground clearance. The 11s house 10 pins per side (which can be shortened or extended) and two igus LL-glide bearings.

Really I’d only recommend them to riders who will find that learning curve worth the touch of extra speed off the lights or side of the road. To me it was.

Granted, that doesn’t take into account the fact that treaded shoes are also heavier than road-specific ones, so the effective difference is larger. Taking the Specialized S-Works 6 road shoes vs. the S-Works 6 XC MTB shoes, for example, you’re looking at another 126g, for a more significant total gain of 164g. But if you were to instead compare the A600s to more budget-minded road pedals, it’s almost a wash.

In the case of Shimano, you’ll need a Junction A box or E-tube Di2 handlebar mount Junction A charging point and a bottom bracket junction for internal wire routing. You’ll also need an E-Tube wireless unit if you want to customise the function of your Di2 system. With Campagnolo, you’ll need a DTI EPS V3 Interface.