Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-23-10, 07:21 PM   #1
chogyam
Junior Member
Thread Starter
 
Join Date: Nov 2010
Bikes:
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Vertical Dropouts... SS/FG

So I've read things like "no way jose" and other things which are more believable like "you can work around it if you don't have horizontal dropouts".

I'd ideally like to make this bike a FG/SS flipflop but if I can even just go SS I'll be happy.

Have any of you gone around the issue of vertical dropouts for a SS/FG conversion and if so how did ya do it?

I saw one guy using a "half link" which I'm not sure how I'd install or even get my hands on one of those.

Also how viable is just playing around with gear ratios to make it fit?

I'm not crazy about the idea of a chain tensioner, either. Going for simple.
chogyam is offline   Reply With Quote
Old 11-23-10, 07:24 PM   #2
evilcryalotmore
モㄥ工匕モ 爪モ爪乃モ尺
 
evilcryalotmore's Avatar
 
Join Date: Feb 2010
Location: LA San Gabriel, California
Bikes: Custom frame
Posts: 2,137
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have a frame with vert drop outs

i just use a chain braker every time. And i dont have a half link the chain tension is actually pretty tight.
evilcryalotmore is offline   Reply With Quote
Old 11-23-10, 07:31 PM   #3
Scrodzilla
There goes Tokyo
 
Scrodzilla's Avatar
 
Join Date: May 2009
Location: San Diego, CA
Bikes: EAI Bare Knuckle, 1975 Raleigh Pro Track
Posts: 26,629
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 140 Post(s)
Use this magic gear calculator and save yourself the trouble of "playing with ratios":

http://www.eehouse.org/fixin/formfmu.php
__________________
Scrodzilla is offline   Reply With Quote
Old 11-23-10, 08:05 PM   #4
dookie
Senior Member
 
Join Date: Jan 2005
Bikes:
Posts: 1,299
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
white industries eno eccentric hub...'FTW', as the kids say.
dookie is offline   Reply With Quote
Old 11-23-10, 08:07 PM   #5
thirdgenbird
Senior Member
 
Join Date: Nov 2009
Bikes:
Posts: 7,108
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dookie View Post
white industries eno eccentric hub...'FTW', as the kids say.
i love mine.
thirdgenbird is offline   Reply With Quote
Old 11-23-10, 08:33 PM   #6
xkillemallx16
Senior Member
 
Join Date: Sep 2009
Location: im, hungary
Bikes:
Posts: 1,983
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i love you
xkillemallx16 is offline   Reply With Quote
Old 11-23-10, 08:38 PM   #7
thirdgenbird
Senior Member
 
Join Date: Nov 2009
Bikes:
Posts: 7,108
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
well thank you.
thirdgenbird is offline   Reply With Quote
Old 11-23-10, 10:35 PM   #8
NormanF
Senior Member
 
Join Date: Mar 2007
Bikes:
Posts: 5,370
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I recommend the White Industries Eno Eccentric hub.

A chain tensioner may be a cheap and quick solution on a vertical dropout frame bike but it also looks ugly.

Avoid if you can!
NormanF is offline   Reply With Quote
Old 11-23-10, 10:37 PM   #9
thirdgenbird
Senior Member
 
Join Date: Nov 2009
Bikes:
Posts: 7,108
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i guess i just as well post a picture:

thirdgenbird is offline   Reply With Quote
Old 11-23-10, 10:52 PM   #10
dsh
Oh, you know...
 
dsh's Avatar
 
Join Date: May 2009
Location: DC
Bikes: '74 Schwinn Sports Tourer (Polo), S-Works E5 Team Festina (Chorus 11), Trek 2200 Bonded Carbon (Fixed), Trek 920 (7 speed IGH), Chesini Olimpiade SL (1x7)
Posts: 2,835
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you grab a half link and a few different cog/chainring combinations, you'll be able to find one that is close enough for singlespeed use. Riding fixed you have to be a little more picky, but it's definitely doable.
dsh is offline   Reply With Quote
Old 11-23-10, 10:58 PM   #11
soyboy
Senior Member
 
soyboy's Avatar
 
Join Date: Aug 2005
Location: brooklyn
Bikes: raleigh gran prix converted to fixed
Posts: 941
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i did it for about 6 months using a half link, the chain stretched over time and i took out the half link, after a while the bike had other problems and i wound up tossing the frame but i kept an eye on it and i never dropped a chain while riding that set up
soyboy is offline   Reply With Quote
Old 11-24-10, 08:10 AM   #12
dsh
Oh, you know...
 
dsh's Avatar
 
Join Date: May 2009
Location: DC
Bikes: '74 Schwinn Sports Tourer (Polo), S-Works E5 Team Festina (Chorus 11), Trek 2200 Bonded Carbon (Fixed), Trek 920 (7 speed IGH), Chesini Olimpiade SL (1x7)
Posts: 2,835
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by soyboy View Post
chain stretched over time and i took out the half link
what
dsh is offline   Reply With Quote
Old 11-24-10, 10:01 AM   #13
soyboy
Senior Member
 
soyboy's Avatar
 
Join Date: Aug 2005
Location: brooklyn
Bikes: raleigh gran prix converted to fixed
Posts: 941
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
chains stretch, well not really, really the pins between them wear out and add a little length but it's refered to as chain stretch, all chains do it
soyboy is offline   Reply With Quote
Old 11-24-10, 11:50 AM   #14
dsh
Oh, you know...
 
dsh's Avatar
 
Join Date: May 2009
Location: DC
Bikes: '74 Schwinn Sports Tourer (Polo), S-Works E5 Team Festina (Chorus 11), Trek 2200 Bonded Carbon (Fixed), Trek 920 (7 speed IGH), Chesini Olimpiade SL (1x7)
Posts: 2,835
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm more confused by the notion that your chain stretched so much that removing a half-link was a viable option, and you still considered the chain rideable.
dsh is offline   Reply With Quote
Old 11-24-10, 12:03 PM   #15
soyboy
Senior Member
 
soyboy's Avatar
 
Join Date: Aug 2005
Location: brooklyn
Bikes: raleigh gran prix converted to fixed
Posts: 941
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
it was a little loose when i had the half link installed and it was fairly tight(though not pulling) once it stretched
soyboy is offline   Reply With Quote
Old 11-24-10, 12:14 PM   #16
thirdgenbird
Senior Member
 
Join Date: Nov 2009
Bikes:
Posts: 7,108
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Without a proper tension method it can be tough. A 1/2in is a long ways.

You can make a magic gear work but an eccentric hub is better. It has enough adjustment in it that I can run a 16t fixed and 18t freewheel. Personally, I am glad I went this route. The wheel is now in its second frame (cyclocross) and if i ever go to a frame with horizontal dropouts i just need new axle caps. They make them in standard and eccentric in every width you could want.
thirdgenbird is offline   Reply With Quote
Old 11-24-10, 12:16 PM   #17
avner
Fueled by Tigers Blood
 
avner's Avatar
 
Join Date: May 2010
Location: Echo Park, California
Bikes:
Posts: 1,496
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by xkillemallx16 View Post
i love you
I thought you loved me!

P.S, good luck with setting up a magic ratio dude.
avner is offline   Reply With Quote
Old 11-24-10, 01:18 PM   #18
Scrodzilla
There goes Tokyo
 
Scrodzilla's Avatar
 
Join Date: May 2009
Location: San Diego, CA
Bikes: EAI Bare Knuckle, 1975 Raleigh Pro Track
Posts: 26,629
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 140 Post(s)
We seem to have missed this magic gear calculator from post # 3 so I'm posting it again:

http://www.eehouse.org/fixin/formfmu.php
__________________
Scrodzilla is offline   Reply With Quote
Old 11-24-10, 01:34 PM   #19
Bat56
Senior Member
 
Bat56's Avatar
 
Join Date: May 2010
Location: St.Paul, MN
Bikes:
Posts: 1,733
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The best thing about the ENO hub is that once I built my wheel around it that thing was more expensive than my bike. So if there is ever a fire, and I cannot carry everything, the wheel comes, the bike burns.
Bat56 is offline   Reply With Quote
Old 11-24-10, 02:23 PM   #20
ImChris
Senior Member
 
ImChris's Avatar
 
Join Date: Nov 2010
Location: Madison, WI
Bikes: Trek Madone, Araya commute
Posts: 418
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by evilcryalotmore View Post
I have a frame with vert drop outs

i just use a chain braker every time. And i dont have a half link the chain tension is actually pretty tight.
This is what my roommate did with his geared bike. He is running 42/16 if i recall, and it works great. Well, chain is a little tight imo, but it works.

.Chris
ImChris is offline   Reply With Quote
Old 11-24-10, 02:38 PM   #21
simonaway427
Senior Member
 
Join Date: Apr 2010
Location: Fredericton, NB, Canada
Bikes: 2010 S1, 2011 F75X
Posts: 1,430
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
how complicated can a chain tensioner possibly be? Probably easier to install than a half-link.
simonaway427 is offline   Reply With Quote
Old 11-24-10, 02:51 PM   #22
Cjzoller
Senior Member
 
Join Date: Oct 2006
Location: New York
Bikes:
Posts: 209
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have a beater with vertical dropouts. I did the half link thing.. Works fine and didn't have to find a magic ratio or anything. Chain is a tiny bit tight, but everything works just fine.
Cjzoller is offline   Reply With Quote
Old 11-24-10, 05:14 PM   #23
thirdgenbird
Senior Member
 
Join Date: Nov 2009
Bikes:
Posts: 7,108
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by simonaway427 View Post
how complicated can a chain tensioner possibly be? Probably easier to install than a half-link.
its complicated when you want to run a ss/fg flip flop setup like the original poster.

(ie, it wont work)
thirdgenbird is offline   Reply With Quote
Old 11-24-10, 05:31 PM   #24
simonaway427
Senior Member
 
Join Date: Apr 2010
Location: Fredericton, NB, Canada
Bikes: 2010 S1, 2011 F75X
Posts: 1,430
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by thirdgenbird View Post
its complicated when you want to run a ss/fg flip flop setup like the original poster.

(ie, it wont work)
But he also mentioned he'd settle with SS if he had to....hence the tensioner solution.
simonaway427 is offline   Reply With Quote
Old 11-24-10, 05:36 PM   #25
thirdgenbird
Senior Member
 
Join Date: Nov 2009
Bikes:
Posts: 7,108
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by simonaway427 View Post
But he also mentioned he'd settle with SS if he had to....hence the tensioner solution.
no reason to settle if you have a nice frame.
thirdgenbird is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 03:11 PM.