|what is needed for double -> triple upgrade ?||PeterRider|
Mar 12, 2002 12:25 PM
|... on shimano ultegra 9spd ? (my components are model 2000). Do I need a new bottom bracket ? |
What I thought I need :
- a few more links on my chain
- rear derailleur
Do I need anything else ?
|re: 118.5mm BB for triple crankset & front derailer...nm||Rusty Coggs|
Mar 12, 2002 1:47 PM
|A few $100||Kerry|
Mar 12, 2002 5:11 PM
|You'll need a new (longer) BB, a new right crank (with triple chain rings), probably a new rear derailleur (longer cage to wrap up more chain when on the small ring), probably not a new left shifter (probably already has triple capability), and several more links in the chain. If you're careful and willing to limit your shifting options, you can only run the largest 3-4 cogs with the small chainring and therefore not need a new rear derailleur - a compromise. If your crank is currently far enough from the frame, you might not need a new BB, but that is unlikely. Recognize that if your bike has short chain stays, you may end up with some unpleasant chain angles and only get a couple of additional usable gears.|
|Front Der. Also (nm)||grzy|
Mar 14, 2002 9:54 AM
Mar 15, 2002 7:31 AM
|Ultegra and below shifters are compatible with triples. DA shifers come in double and triple versions. I think all the Campy shifters can handle triples.|
|re: what is needed for double -> triple upgrade ?||claw|
Mar 12, 2002 8:01 PM
|I just did the same thing. Check to make sure your shifters are triple compatible - the current ones are.
1) front der.
2) triple crank
3) rear der
4) bottom bracket
Sell the old parts
|re: what is needed for double -> triple upgrade ?||blm|
Mar 14, 2002 9:36 AM
|Pierre hein? |
you will obviously need the items mentioned and that my friend will set you back several hundred US$$$, even more canadian ??? (600-700 full retail).
...or you could get creative (read minimalist individual) and get a "compact drive" system:
34X46 or 48 (110mm standard) crankset :french companies Specialite TA, maybe Stronglight too,
cassette to match (you'll need to calculate ratios here and make sure you RD can swallow the biggest cog) maybe even keep the one you have and all you'll miss is some very low and high gears that most people dont use anyway unless you race or live near l'Alpe d'Huez! It wont be a triple and the cassette will have larger steps wich might not be you cup of tea, however it makes for a lighter, more accurate and reliable gear system at a lower cost. Any takers for a project bike?
That is my take on it and it really depends on what type of cyclist you are. Sorry if I added confusion to an already difficult (and pricy) choice. Honestly, I ride a triple and had I known that before...