Re: Look CX7 failure - bad design
- From: "Lee" <lee_AT_SHOES_wheelman_DOT_com>
- Date: Wed, 10 Aug 2005 07:14:13 -0400
"Rik O'Shea" <rikoshea@xxxxxxxxx> wrote in message
news:1123667606.299456.219170@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> The CX7 is Look's top of the range pedal that includes a design feature
> that allows the Q-factor to be adjusted. Effectively the Q-factor is
> adjusted by sliding the carbon foot plate along the spindle. The carbon
> foot plate is attached to the spindle by two screws but is held in
> place by a small piece of red plastic that Look calls a "crank wedge".
> This small piece of red plastic is exposed on the underside of the
> pedal, ideally placed so that it can be snagged by your shoe cleat. If
> it breaks then the foot plate effectively slides to the outer edge of
> the spindle, effectively rendering the Q-factor adjustment useless.
>
> Look stress how they test the pedal spindle of the CX7 (their most
> expensive pedal) for millions of revolutions to ensure it doesn't fail
> yet they incorporate a fragile piece of plastic as a key part (if not
> "the" key part) of the design !
Rik,
I've got a couple of sets of the CX7 and have broken or lost a couple of
those red keys. I have not noticed that the platform moves as a result...I
keep the mounting bolts tight and have had no problem.
I do agree that the keys could be better designed...
Lee
.
- References:
- Look CX7 failure - bad design
- From: Rik O'Shea
- Look CX7 failure - bad design
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