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

New: Take Part in the new April's Giveaway for a Chance to Win the Euybike S4 Pro Max ebike worth $1299


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
Front derailer not moving
Today 12:03 PM
What are the best cost effective ways to...
Today 11:53 AM
Tour of Luzon 70 years of Filipino Cycli...
Today 01:22 AM
RECOMMENDATION
Today 01:04 AM
Injury Recovery
Yesterday 07:33 PM
Good morning form Alberta CA
Yesterday 09:40 AM
Unlocking speed on my e-bike.
04-27-2025 01:04 PM
MTB handlebar width
04-27-2025 06:25 AM
What is your favorite MTB trail/route in...
04-27-2025 06:16 AM
Bridgestone Blouson bike.
04-26-2025 07:57 PM

[-]
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
22 posts
no avatar 2. enkei
16 posts
no avatar 3. Flowrider
15 posts
no avatar 4. meamoantonio
15 posts
no avatar 5. Painkiller
12 posts