105 Front Derailleur wont fit

[Alex321]

Daft question the old Claris front derailleur fits perfectly is there any reason why I just can't use this with the new 105 set up

It would probably be OK.

But why not try taking the band off it and using that on the 105 FD?

 

[figbat]

FD's don't need a pull ratio. Only difference would be a triple/double.

…and the capacity to take different chain widths.

 

[Jimmy Welch]

It would probably be OK.

But why not try taking the band off it and using that on the 105 FD?

That bands not coming off its riveted , isn't it ?

 

[JohnHughes307]

https://en.wikipedia.org/wiki/Zen_and_the_Art_of_Motorcycle_Maintenance

One of my favourite books of all time.

 

[CAESAR AVGVSTVS]

I’ve had similar problems in the past and found the plastic milk containers make lovely shims 👍

 

[Alex321]

That bands not coming off its riveted , isn't it ?

Ah. I had expected it would be bolted on somehow.

 

[Jimmy Welch]

Ah. I had expected it would be bolted on somehow.

 

[Alex321]

You can get purpose made adapters for smaller seat tubes
https://www.sjscycles.co.uk/gear-sp...-clamp-band-adapter-unit-for-286mm-y5p198030/

Although that says ultegra in the heading, the compatibility list includes 105 for 10 (5800/5801), 11(7000) or 12 (7150) speed.

 

[Jimmy Welch]

You can get purpose made adapters for smaller seat tubes
https://www.sjscycles.co.uk/gear-sp...-clamp-band-adapter-unit-for-286mm-y5p198030/

Although that says ultegra in the heading, the compatibility list includes 105 for 10 (5800/5801), 11(7000) or 12 (7150) speed.

Cracked it , thanks very much

 

[Ajax Bay]

Daft question the old Claris front derailleur fits perfectly is there any reason why I just can't use this with the new 105 set up

You look as if sorted but, be aware that if you keep the Claris FD on temporarily like, the cage will be wider (an 8sp chain is wider than an 11sp) so the 'indexing' will need a bit of care and the changes may not be as crisp as you'd like, but it'd work, as @fossyant implies.
You're replacing a compact with a compact chainset, right? Same size large ring?

 

[Jimmy Welch]

You look as if sorted but, be aware that if you keep the Claris FD on temporarily like, the cage will be wider (an 8sp chain is wider than an 11sp) so the 'indexing' will need a bit of care and the changes may not be as crisp as you'd like, but it'd work, as @fossyant implies.
You're replacing a compact with a compact chainset, right? Same size large ring?

Hi yes both the same , cranks are slightly shorter tho going from 175 to 172

 

[cyberknight]

FD's don't need a pull ratio. Only difference would be a triple/double.

although the higher speed fd have narrower gap to account for chain width, i know this from fecking about trying to get 9 speed working with 10 speed shifters as although it shifts ok i could never eliminiate chain rub and lbs told me why

 

[Dogtrousers]

105 shifters allow you to "feather" the front mech (something I've never got the hang of but I read about it in the manual). Would this still be effective (if you actually know how to use it) with the Claris mech?

 

[cyberknight]

105 shifters allow you to "feather" the front mech (something I've never got the hang of but I read about it in the manual). Would this still be effective (if you actually know how to use it) with the Claris mech?

claris mechs can trim

 

[Jimmy Welch]

As a follow up to this last question lads the cranks on my new set up are 172.5 my old Claris / FSA were 175 do I need to adjust my saddle height proportionally for this