Weight is not the be all and end all in certain components, and the danger of injury does not seem to have been addressed here.
That's indeed what it says, although Speedplay specifies a 11.5mm stack height for their Zero pedals, which includes a 3-bolt adapter plate, but 8.5mm directly bolted to the shoe sole. My setupis the latter.roca rule wrote:if you read the velonews article you are going to find that they state that they have a 13mm stack height wich is on par with speedplays (i don't know if it takes the adapter as a default configuration).
Initially, I rode with adapter plates to dial in cleat position, but subsequently drilled my soles to ditch unnecessary stack height. I find over 4mm extra stack height is unacceptable, at whatever weight reduction, and I'm certain I'm not the only one who feels this way. In fact, I wish there were solid pedals with even less cleats to the pedal axis distance.http://www.speedplay.com/index.cfm?fuseaction=home.zero wrote:THE LOWEST STACK HEIGHT: The Zero cleat positions your foot closer to the top of the spindle for improved power transfer.
11.5 mm stack height for 3-hole mounting
8.5 mm stack height for 4-hole mounting
It's a type of dry-lube bushing with a teflon or PTFE-impregnated bronze coating on its sliding surface. They're quite durable and an industry standard for parts that need to move but don't necessarily require the smoothness of a bearing or need to operate within limited dimensional constraints.BobSantini wrote:They seem to work acceptably. What is "DU"?
mythical wrote:It's a type of dry-lube bushing with a teflon or PTFE-impregnated bronze coating on its sliding surface. They're quite durable and an industry standard for parts that need to move but don't necessarily require the smoothness of a bearing or need to operate within limited dimensional constraints.BobSantini wrote:They seem to work acceptably. What is "DU"?
So not depleted uranium then. Just as well. This is weight weenies.
Weird that they went for as much as 13mm.
Just from looking at various pics of the cleats alone I feel it is definitely doable to lower stack height. The problem is often one of compatibility with various brands etc., etc.
Then again the clipping system may also require a minimum amount of stack for clearance, who knows....
As far as bearings go, the cleat is not the bearing and does not rotate on pedal. The pedal itself does rotate. The black part rotates on a bearing and the blue part rotates on a bushing.
I'd really like to try these pedals, except I have expensive Bonts with 4-hole drilling.
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