[Lurch..]

my mate told me the other day that the raceface square tapers can be machined out to the isis spline. any truth to that? i know it would void the warrynty (cranks r second hand anyway) so im not worried there.

cu~

 

[gravity]

i seriously doubt that is possible. maybe a custom machinist could do it, but the cranks would have less material in a highly stressed area, and are not designed to take strain as such. cranks aren't THAT much, by the time you mucked around with machining and testing, you might as well have bought new ones.

 

[shocktower]

It could not be done ,sorry

 

[Brian HCM#1]

Originally posted by shocktower
It could not be done ,sorry

And even if it could be done a square tapered arm is a different design than the Isis. You would probably lose quite abit of streingth. Plus with the time and effort it would take to F up those cranks, you could buy some new ones. My 0.02

 

[Lurch..]

i wont even bother to attempt it now

~cu~

 

[grommet]

Another disaster narrowly adverted. Good work Monkeys!

 

[Dog Welder]

I don't know if I can be done but even if it could you are taking a chance with a very HIGH stress part of the bike. Plus Isis BB aren't that expensive. 40 bucks for a decent one.

 

[vitox]

lurch


whaddaya say you get the cad work done, and i go down to the machine shop so we can get the worlds first

7 arm spline !!!!

 

[Lurch..]

aw man, u lost me on that one!
do u mean a crank with 7 arms instead of 5? or a 7 spline BB? or 7 cranks on the one crank (completly impracticle, but hey!)
i think i need sleep

 

[vitox]

Originally posted by Lurch..
aw man, u lost me on that one!
do u mean a crank with 7 arms instead of 5? or a 7 spline BB? or 7 cranks on the one crank (completly impracticle, but hey!)
i think i need sleep

or
just look at the avatar for a hint on the 7 thing
v

 

[edoz]

Definitely could not be done, unless you put a lot of weld bead on it to build the surface up before machining, and then it would most likely need to be heat treated again, but what's the point?

 

[KobraKai]

You just need a special tool. It's available at most bike shops. just go in and ask for a 'big wedgie' and they will know exactly what you are looking for. i dont think they cost very much.