Vinalopo
New Member
- Location
- Madrid (Spain) / Parma (Italy)
Good evening,
Please apologize the long post.
I am willing to add a custom Thorn Audax to my bicycle family and I need advice in putting together the specifications. To be said that I am a DIY guy and I wish to put the bicycle together by myself also sourcing several places / re-using parts.
The bicycle will have bar end shifters and 27 speeds (if 30 would be possible even better) and would be used to train and cycle with friends and take part to audax (mainly 200-300 km) events. I would possibly try to take part to longer audax events up to Paris - Brest - Paris or Mille Miglia.
Front:
I wish to install a Stronglight impact triple chainset, it has a 45 mm chainline, the manufacturer advice using a 115 mm JIS bottom bracket. To me this chainset make sense for the combination quality, price, weight, availability in several chain rings sizes.
I am not such a pro to appreciate external bearing / plenty old square taper bb stiffness difference but have to admit I didn't have make huge use of external bearing cranksets to appreciate the difference, advice is welcomed.
Rear:
I wish to use an MTB rear derailleur to have the possibility of using MTB cassettes. I was thinking in a Shimano LX or XT to be used with Shimano bar end shifters (cheaper than SRAM and proven excellent quality)
Shimano MTB rear derailleurs have 50 mm chainline.
Wheels:
I would use both my current road mavic aksium wheels, both custom MTB hub / dynohub equipped wheels. The latter not yet put together so I could change opinion and use road hub if it make sense. Advice welcomed.
Issue:
Chainline:
does it make sense put a 10 mm wider spindle to match front and rear chainline? UN54 Shimano BB is not available in 125 (115 mm spindle BB would give me 45mm chianline according to manufacturer spec): better a 122 or 127 mm spindle BB?
Front derailleur:
What derailleur to use? MTB one? I see that thorn sjs use tiagra front derailleur, why?
Rear derailler: are you aware of any 9 or 10 speed road (or otherwise 45 mm chianline) long cage rear derailleur that could be used in combination with 11-32(4) cassettes and would save me chain line issues?
Wheels:
would mixing road and mtb hub wheels create chainline issues or is fine?
Thank you very much!
Please apologize the long post.
I am willing to add a custom Thorn Audax to my bicycle family and I need advice in putting together the specifications. To be said that I am a DIY guy and I wish to put the bicycle together by myself also sourcing several places / re-using parts.
The bicycle will have bar end shifters and 27 speeds (if 30 would be possible even better) and would be used to train and cycle with friends and take part to audax (mainly 200-300 km) events. I would possibly try to take part to longer audax events up to Paris - Brest - Paris or Mille Miglia.
Front:
I wish to install a Stronglight impact triple chainset, it has a 45 mm chainline, the manufacturer advice using a 115 mm JIS bottom bracket. To me this chainset make sense for the combination quality, price, weight, availability in several chain rings sizes.
I am not such a pro to appreciate external bearing / plenty old square taper bb stiffness difference but have to admit I didn't have make huge use of external bearing cranksets to appreciate the difference, advice is welcomed.
Rear:
I wish to use an MTB rear derailleur to have the possibility of using MTB cassettes. I was thinking in a Shimano LX or XT to be used with Shimano bar end shifters (cheaper than SRAM and proven excellent quality)
Shimano MTB rear derailleurs have 50 mm chainline.
Wheels:
I would use both my current road mavic aksium wheels, both custom MTB hub / dynohub equipped wheels. The latter not yet put together so I could change opinion and use road hub if it make sense. Advice welcomed.
Issue:
Chainline:
does it make sense put a 10 mm wider spindle to match front and rear chainline? UN54 Shimano BB is not available in 125 (115 mm spindle BB would give me 45mm chianline according to manufacturer spec): better a 122 or 127 mm spindle BB?
Front derailleur:
What derailleur to use? MTB one? I see that thorn sjs use tiagra front derailleur, why?
Rear derailler: are you aware of any 9 or 10 speed road (or otherwise 45 mm chianline) long cage rear derailleur that could be used in combination with 11-32(4) cassettes and would save me chain line issues?
Wheels:
would mixing road and mtb hub wheels create chainline issues or is fine?
Thank you very much!