Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.


Front mech for curved seat tube.
#1
Hi All,

I'm hoping I can pick your collective brains for an upgrade to an old part...

I have a Claude Butler ultra-short wheelbase tandem. Built as a custom job in the late 70's and with some generally nice parts. I'm currently building the bike up with some more up to date components to take it on tour. The one troubling part is the front mech. The seatpost is curved around the rear wheel meaning that all modern derailleurs I have looked at are at the wrong angle for the chainring. It was originally fitted with a Simplex Prestige mech which allowed adjustment of the chain guide angle. This mech was broken and I would like to put a more reliable component in its place. Does anyone know of a front derailler with a 14+ tooth capacity with adjustable angle for the chain guide?

any advice much appreciated!

Nick.
  Reply
#2
(04-30-2010, 07:39 PM)nic elf Wrote:  Hi All,

I'm hoping I can pick your collective brains for an upgrade to an old part...

I have a Claude Butler ultra-short wheelbase tandem. Built as a custom job in the late 70's and with some generally nice parts. I'm currently building the bike up with some more up to date components to take it on tour. The one troubling part is the front mech. The seatpost is curved around the rear wheel meaning that all modern derailleurs I have looked at are at the wrong angle for the chainring. It was originally fitted with a Simplex Prestige mech which allowed adjustment of the chain guide angle. This mech was broken and I would like to put a more reliable component in its place. Does anyone know of a front derailler with a 14+ tooth capacity with adjustable angle for the chain guide?


any advice much appreciated!

Nick.

Maybe the others can assist me in this idea to which I am guessing blindly without a picture of your bicycle. If you knew a metal worker that could possibly tac weld some sort of brace allowing maybe a modern "mech" to fit. That would be pretty cool. If possible can you upload a picture of your bike part?

Thanks,
Bill

EDIT - Here is the company website which could offer some better advice then I.....
http://www.falconcycles.co.uk/Corporate/CB/index.shtml
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Full Moon Ride - Sunshine Coast
Yesterday 10:46 PM
Continued learnings from bikepacking
Yesterday 10:40 PM
What are the pros and cons of using a 26...
Yesterday 10:35 PM
The great thing about trikes
Yesterday 06:52 PM
Cutting Drag Watts
Yesterday 03:54 PM
How often check or change mechanical dis...
Yesterday 03:24 PM
Tour de FRANCE 2025
Yesterday 03:14 PM
Looking for an electric bike for someone...
Yesterday 03:12 PM
Tubeless vs. tubes: What are the pros an...
Yesterday 10:44 AM
Is anyone riding with music?
Yesterday 10:38 AM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. GirishH
23 posts
no avatar 2. Flowrider
22 posts
no avatar 3. meamoantonio
16 posts
no avatar 4. enkei
15 posts
no avatar 5. Jesper
14 posts