Retrobike Forum Index

It is currently Sat Dec 03, 2016 10:48 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: GT Tempest woes Part 2 !
PostPosted: Thu Sep 12, 2013 8:40 am 
gold | rider | rBoTM
gold | rider | rBoTM
User avatar

Joined: Sat Jan 05, 2013 5:06 pm
Posts: 10230
Location: The deep South
Hi there folks ,
Having volunteered myself for getting a bike back on its' rubber after 16 years in a shed , I've come to a halt with a chainset/bottom bracket/front changer problem :facepalm: I have replaced the (knackered) original b/b ,a 73x118 job , and sourced a cheap Shimano chainset to put on it . The problem I now have is that the front mech doesn't have enough throw to reach the big ring . Both the mech and shifter are original and the adjustment screws on the mech are not restricting it . Wish the bike had the original c/set on but it had been nicked :roll: Any help would be gratefully received , thanks .
Mike :(


Top
 Profile  
 
PostPosted: Thu Sep 12, 2013 10:53 pm 
Retro Guru
User avatar

Joined: Wed Apr 18, 2012 9:47 pm
Posts: 324
Location: Stratford upon Avon
Can you not just fit another (smaller) bb? Maybe a 110mm? What chranks are you using?


Top
 Profile  
 
PostPosted: Thu Sep 12, 2013 10:58 pm 
Retro Guru
User avatar

Joined: Mon Aug 03, 2009 3:16 pm
Posts: 527
I had the same problem recently I solved it by getting a newer style front mech (I got a dual pull deore one) which has a greater range than the older style mechs and meant I could get onto the top ring.
or you could fit a narrower bb?
I know which is easiest!


Top
 Profile  
 
PostPosted: Thu Sep 12, 2013 11:18 pm 
Gold Trader
Gold Trader
User avatar

Joined: Sat Oct 23, 2010 10:33 pm
Posts: 2117
Location: New Forest
BB axle length needs to match the cranks, not the frame.


Top
 Profile  
 
PostPosted: Fri Sep 13, 2013 12:23 am 
Gold Trader
Gold Trader
User avatar

Joined: Fri Jan 23, 2009 2:30 pm
Posts: 12398
Location: Surrey
If you let me know what cranks you have, I may have a bb you can have for postage. Can't promise I have what you need, but if I do......


Top
 Profile  
 
PostPosted: Fri Sep 13, 2013 10:18 am 
gold | rider | rBoTM
gold | rider | rBoTM
User avatar

Joined: Sat Jan 05, 2013 5:06 pm
Posts: 10230
Location: The deep South
Thanks all for your help :wink:
the cranks are Acera m290s cheap I know but it all is :roll: Front mech is knackered really but if I replace that too , maybe the even cheaper shifter/brake lever combos wont work too well either . Then we will need better shifters and brake levers too . :facepalm: It would be an ongoing headache for me on a bike that only has a reasonable frame ,forks and front wheel . Not worth the bother . Just trying to get it rolling. Tried my 110mm road bike b/b in it and it was still too long . Put the rubbish saracen one back on that was on it . seemed to work so I've left it like that . Thanks for advice fellow R/Bers


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: Adruzzz, CristiRD, Gerard, IHateRain, troje and 23 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group