Isis or Hollowtech / X-type

dhxcme

Which cranks would you have.

Let me set a scenario which i came up against. It's getting dark, your six miles from anyway of getting home it's threatening to rain and you offside crank drops off.

Now if i had hollow tech or x-type i'd be screwed as i forgot my allen keys.

Luckily i had isis (get you out the sh*t) drive so i just slid the crank back on and made it back home.

I'm sticking with isis but i'm just wondering what others say.

supersonic

Octalink!

Jimbob_no5

not sure on this one, ive always used isis but for the new build i want saint hollowtechs just because not much can go wrong but i do always take allan keys out with me

stubs

go with shimano there is a little pin that holds the crank on it shouldnt fall off even if the pinch bolts come loose

norco forever

saints/hollowtechs only need an allen key to fix most things :P

dhxcme

I had a set but just not the one for my cranks which isn't normal. I had saints on my bike before it got nicked and to be honest they weren't anything special.

Also they ARE isis cranks but shimano octalink work the same.

nicklouse

stubs wrote:

go with shimano there is a little pin that holds the crank on it shouldnt fall off even if the pinch bolts come loose

a what?

thereis a preload bolt and 2 pinch bolts. where is this "pin"?

skyliner

If you fit them properly and check them periodically they don't fall off mid-ride in the 1st place.

dhxcme

That would be anouther f*ck up on my part. washed and greased everything but must have missed it on the torqueing up. still got home without walking so not all bad.

Marjory Stewart BAxtor

supersonic wrote:

Octalink!

go home!

go on... !

dave_hill

Marjory Stewart BAxtor wrote:

supersonic wrote:

Octalink!

go home!

go on... !

Square Taper!!! :twisted:

Marjory Stewart BAxtor

I don't mind square taper - served the generation before well.


Just don't let it anywhere near Marjory Stewart BAxtor's cranks

stubs

dont know if its on the latest hollowtech cranksets but on mine and a couple of mates sets there is a small plate that pivots on one of the pinch bolts on this plate there is a small pin that locates in a milled hole on the crank axle when you undo the pinch bolts you have to lever up this plate before you can remove the crank arm

it was quite funny watching my mate try to remove the crank arm because he had forgotten about this we stopped him just as he was going to get the big hammer out

stubs

just had a quick look on the shimano site the 2008 cranksets have the safety pin as well download the pdf for the xt crankset and its part number 4

plugp7

Square taper, UN72 if you can find them.
Fit and forget.

Milkie

I had a RaceFace X-Type BB.. It lasted about 200 muddy miles before I had to buy a replacement. I bought a Shimano one this time, as they last a lot longer.

rob cole

the shimano hollowtech II tension cap tool is nylon, weighs all of 25gm and size of a small biscuit so not really hard to put in your backpack along with your allen key multi tool - that is all you ever need to strip off or reinstall Hollowtech II cranks

you are right that later versions of HT2 come with a "safety plate" with a hardened steel pin that locks into a hole in the axle to prevent the crank working loose if something happens to the pinch bolts or tension cap (and which you must remove or loosen before trying to remove the non-driveside crank arm)

however, i have been running Hollowtech II cranks since they came out (LX, XT and Saint) and have never had one "fall off" unlike square taper (which i've also had SNAP on me leaving a nice scar up my calve muscle)...

..or X-Type which kept working loose as the spline friction fit became worn

or ISIS which was a bad joke in terms of b/b life

or Truvativ Howizter which uses the ISIS interface with external bearings and cranks that seem to like jumping off the axle stub at their own pleasure

HT2 it is then