How to find replacement Creo crank arms?
- Thread starter kattanm
- Start date
mschwett
Well-Known Member
- Region
- USA
what?
the interface on these cranks is not a square taper.
praxis offers a couple lengths in both aluminum or carbon:
the chainrings are not attached to the crank, nor is the spider. they self extract from the motor, a very easy swap.
kattanm
Active Member
ah, great. I have the carbon ones and had only seen those as the option. That's a pricey experiment for something I might not like. but these alloys will be perfect! video on how to swap? does the power reading get messed up or something if i don't tighten to just the right torque?
mschwett
Well-Known Member
- Region
- USA
the power “meter” in the SL motor isn’t in the crank arm, so i can’t imagine it matters! i haven’t seen a video but they come with instructions. you just need a socket wrench with the appropriate size hex bit, i can’t remember offhand but it’s not an exotic size. of course it’s best to do with with a torque wrench, but probably not essential. just make it tight.
kahn
Well-Known Member
- Region
- USA
- City
- northWET washington
Too easy to swap - the left for the right, that is. As I've written before, my bike shop accidentally swapped my left/right and thereby also wrongly swapped my spd pedals which don't like to release when backwards!!!!
Allan47.7339
Well-Known Member
The instructions are on the Praxis web site. The cranks for a Specialized "SL1.1" Motor - The SL motor use a black alloy Praxis M30 spline spindle. Unfortunately the alloy arms seem to be out of stock but for some reason they have carbon in stock.
It is similar to the ISIS spline spindles. I recommend the use of a torque wrench to attach properly. If they are too loose you can ruin the fit of the crank and it will eventually deform and never seat properly or stay tight until you buy a new crank. I learned the hard way on another bike with spline spindles.
It is similar to the ISIS spline spindles. I recommend the use of a torque wrench to attach properly. If they are too loose you can ruin the fit of the crank and it will eventually deform and never seat properly or stay tight until you buy a new crank. I learned the hard way on another bike with spline spindles.
Dazmanturbo
Well-Known Member
The Praxis website is fairly good to show Specialized 1.1. I swapped from the alloy Praxis arms over to carbon, on the same length 175mm. The carbon ones have a lower Q factor, as they do not stick out, meaning a narrower bike. Feeling quite wide was one of the few things I disliked about my Creo and the carbon cranks fixed this. The Levo uses the same cranks, but at a short length, typically 165 and 170mm. Here in the un the UK, I can see a few cranks listed from time to time of different lengths, mainly alloy.
Allan47.7339
Well-Known Member
Search the technical details of the current model Creo's with 12 spd SRAM and see what they use.
Jack Cox
Member
Yup- spent hours doing that and pouring over the manuals and diagrams. Unfortunately didn’t get to some sort of a part number.
Off to the the LBS - they probably have some insights
Hi, I'm very interested to hear what carbon crank you got for the Specialize 1.1 from Praxis because the M30 spline all have 182mm Q-factor
