The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
7/1: Members: Log In to See Fewer Ads! |
5/28: SAAB Evolutions/TSN T-Shirts $14
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
[Main General Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Maybe ... maybe not
Posted by Eiron [Email] (more from Eiron) on Thu, 1 Jul 2004 11:35:30
In Reply to: I know you addressed this to Eiron, but here is my take, JBinDC, Thu, 1 Jul 2004 06:14:26
Members do not see ads below this line. - Help Keep This Site Online - Signup
Whether or not a new rear derailleur is needed is answered by several bits of info:
1) what's the max cog size the derailleur is rated for?
2) what's the max amount of chain wrap the derailleur's rated for?
3) what front chainring combination is being used?
4) what rear cog range is being used?
From here we can calculate the "official" limits of the rear derailleur. However, derailleurs usually work a bit beyond their rated capacities. For example, my road setup is with an older Ultegra short cage rear. I run a 12-28 on the back & 50/38 up front. When I want to swap in a triple (for the two sets of switchbacks between Glen Haven & Estes Park), all I do is throw in a longer BB & mountain front derailleur with the new 28/38/48 crank. A bit of tweaking-in the front cable length & I'm done. I'm never (intentionally) in a small ring/small cog combo, so the chain's never (intentionally) too slack.
You did point out something I forgot: a new chain (especially if new rings & cogs are being used), & maybe new cables. Thanks! And you're right, if the bike's too worn out it might not make sense to spend a lot to convert. But I've rarely seen a nice (carbon) bike THAT used up. And I usually buy my parts from clearance bins, old-stock sales & bike swaps, so the costs remain much lower to change parts than to buy a new bike. Well, for me, anyway...
posted by 146.82.1...
What I'm going to try next (from my stock of used parts, of course!)
Posts in this Thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
![](/tsn/xyz/stateofninebutton.gif) |
SaabClub.com
![](/tsn/xyz/scnabutton.gif) |
Jak Stoll Performance
![](/tsn/xyz/jakstollbutton.gif) |
M Car Covers
![](/tsn/xyz/mcarcoversbutton.gif) |
Ad Available
![](/tsn/xyz/buttonavailable.gif) |
![](/tsn/images/tsnmap.gif)
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!