105 hollowtech to new 105 hollow tech compact

[Barracuda]

I have a 105 hollowtech on my trek.

Because I am an unfit bast#@d I want to put on a compact.

Will a compact from say Wiggle/Probike kit fit or will I need another cup??

 

[brianf7]

I have a 105 hollowtech on my trek.

Because I am an unfit bast#@d I want to put on a compact.

Will a compact from say Wiggle/Probike kit fit or will I need another cup??

I just fitted a Campy record compact 34x50 I needed to shorten the chain 2 links and lower front mech otherwise it was a simple change over.
Shimano should be exact same.
Nothing lazy about useing compact its great I have 11x23 on the back and in our final road race of the season I rode everyone off my wheel on a 7km climg at 9%
I didnt know I was on my own untill I was over the top still talking to the guy behind but he was way way behind. Just sit in and grind away untill they all fall off the back Love it.

 

[Bustedknuckle]

I have a 105 hollowtech on my trek.

Because I am an unfit bast#@d I want to put on a compact.

Will a compact from say Wiggle/Probike kit fit or will I need another cup??

External bearing type crank you now have? If yes, plug and play. Lower FD, probably take a link ut of the chain.

 

[Barracuda]

Further to above ... when measuring crank length ... where are the measurements taken from ..... i.e. My current 105 is 175mm from middle of pedal "hole" to middle of bottom bracket "hole" .... therefore is that a 175mm crank ??

 

[dsut4392]

Further to above ... when measuring crank length ... where are the measurements taken from ..... i.e. My current 105 is 175mm from middle of pedal "hole" to middle of bottom bracket "hole" .... therefore is that a 175mm crank ??

Personally I just read the number stamped on the back of the crank if I want to know the length, but you could measure it that way if you prefer

 

[Barracuda]

Personally I just read the number stamped on the back of the crank if I want to know the length, but you could measure it that way if you prefer

Ahhhhhh ... incredibly humerous .... to be honest I didnt even know there was a stamp on the back ..... now I do I will check ....THANKS

But wait .... that would be like reading the instruction book if all else fails.

Point taken ..

Thanks again.

The power of the forum wins again.

 

[Barracuda]

One would also assume that the new 105 compact works with a 9 speed dura-ace cassette ??

Any one ???

 

[Bustedknuckle]

One would also assume that the new 105 compact works with a 9 speed dura-ace cassette ??

Any one ???

Yep, w/o problem, no modification needed, to use with a 9s chain.

 

[Barracuda]

Yep, w/o problem, no modification needed, to use with a 9s chain.

Thanks ...... on its way already from the UK ... didnt even think to ask that question ... phew !!!!