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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)

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Old 04-30-09, 09:39 PM   #26
kergin
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Originally Posted by dirtyhippy View Post
Do you consider bikes with flip flop hubs to be single speed?
If one side produces a different gear ratio from the other, then no, I would not consider that to be a "single speed".
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Old 04-30-09, 11:17 PM   #27
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I wouldn't consider any bike where you can change the gears WHILE RIDING to be a single speed. This is obviously not the case here. But with a three-gear hub where you can shift and change the gear ratio while riding, that is not a single-speed for obvious reasons.
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Old 05-01-09, 06:07 AM   #28
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Originally Posted by bkowa092 View Post
I wouldn't consider any bike where you can change the gears WHILE RIDING to be a single speed. This is obviously not the case here. But with a three-gear hub where you can shift and change the gear ratio while riding, that is not a single-speed for obvious reasons.
However, doing so with an S3X does make it a Fixed Gear... however, that's a different beast.
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Old 05-01-09, 11:49 AM   #29
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Originally Posted by eogie View Post
I'd love to see pictures of the complete bike. Cool idea.
Here you go:


And wether or not people consider a double/double and single speed, and what the point is.... I can say I can only do flat centuies on a dedicated single speed but having a double lets me do more and varried rides. I use my taller gear 99% of the time, but on my last century there was a 800ft climb and I swapped the gear to the easier one. I would have had to have walked in my clipless carbon soled road shoes with LOOK style cleats up a big hill.... not ideal.

Last edited by Hirohsima; 05-01-09 at 12:03 PM.
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Old 05-01-09, 12:34 PM   #30
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Originally Posted by commutr4life View Post
Fascinating...and both of you use QR? I thought that was a no no with ss, or is that just fg?
A QR will work fine with ss and somewhat OK with fg. Some (including me) find it easier to make very fine adjustments to chain tension with track nuts. (loosen one side, push rim sideways, tighten that side, loosen other side, push rim to center, tighten. Repeat until happy.). It's harder to get chain tension as precise with just pushing the wheel to about the right place and flipping the quick release, but with a (freewheel) SS, chain tension isn't critical.
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Old 05-01-09, 01:06 PM   #31
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I've got one on a flip flop setup. DOS on one side, fixed on the other. I find myself riding fixed about as much as free, the fixed and one of the gears on the DOS are the same size, and I have a lower free gear for pulling my 1.5 year old son around in the trailer. Perfect setup. I'm running a 1/8" chain right now until I can get a 3/32 cog. There doesn't seem to be any prob with the 1/8" though so far. Bottom line, great product, freewheel is loud as hell (reminds me of those Mavic freehub bodies, but cleaner somehow), I expect it to last a long long time.
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Old 03-25-10, 06:02 AM   #32
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Just to confirm, a 1/8 chain will work with on both gears of the White Industry DOS freewheel?
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Old 03-25-10, 08:27 PM   #33
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White Industries recommends a 3/32 8-speed chain on their website....

http://www.whiteind.com/singlespeedg...reewheels.html
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Old 03-25-10, 09:04 PM   #34
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1/8" chains tend to like pretty good chainlines. 3/32" chains don't care.

Steel quick releases work fine with FG and SS. Around 1990 or so it became relatively common for track racers to change gears several times during a workout. Rather than change cogs, some fellows just made up three or four wheels, each with a different cog, and added quick releases. I saw world class kilo riders do full power standing starts with quick release wheels, and never saw anybody pull a wheel.

I have a couple of two speed freewheels made in the 20's or 30's. I also have some three and four speed ones, in addition to the dozen or so 5, 6, and 7 speed ones from relatively modern times. I am looking forward to the continuing technological progression today's fixie riders are enjoying. I note that Retro-Directe was "invented" a few years back. At this rate I expect someone to invent a Cambio Corsa or Margherita/Osgear derailleur system within the next two years. Downtube levers cannot be much farther behind. Y'all will be shifting with your brake levers (still not connected to any brakes, of course) before the decade is out!
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Old 03-31-10, 07:01 PM   #35
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You'll want to use 3/32" chain, 1/8" likes to rub on the larger cog when you're using the small cog.
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Old 03-31-10, 09:07 PM   #36
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Introduces too many decisions and defeats my purpose for riding fixed or ss. I have 20 gears to play with on my other 2 bikes. To me it's not just minimal gears, it's factoring out the gear changing option
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Old 03-31-10, 10:57 PM   #37
Six jours
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I note Sturmey-Archer has reintroduced the three-speed fixed gear internally geared hub. I may be the last fixed gear rider on the planet to be aware of this, but it's still very interesting to me. And throws another wrench into the "what counts" discussion.
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Old 01-05-14, 09:56 AM   #38
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Hello.
I would like to ask for you advice, if it is possible.


I have a spare road frame and want to convert it to my first single speed with eno eccentric hub. Because I am not sure which size of freewheel will fit me ( I live in pretty flat city of St. Petersburg, Russia but we do have strong winds because of the wide streets and a lot of water), I was thinking of trying dos eno. It seems like a good idea, so I can try 17/19 with 48 tooths crank.


So my question is about chainline.


Eno eccentric hub which I am getting has 47.5 chainline and a crank
Fsa gimondi has chainline 45mm with Recommend bottom bracket axle length: 110.5mm.


Is the chainline same (47.5) with dos eno? Or more precisely, the chainline is different for each cog but would be okay to run it with 45mm crank? Does this difference matter if I use 3/32" chain?


For summary here is list of my test setup:


FSA GIMONDI crank
Shimano un55 bb 110mm
Eno eccentric hub
Dos eno 17/19 freewheel
3/32" chain




For 700x25 wheels, I get


gear inches


frontrear 16 17 18 19 20 22
48 79.4 74.7 70.6 66.9 63.5 57.7


I read somewhere that 70 is a good average, so 66 and 74 seem like good values to try.




A more general question would be:
Is this all worth to bother? Maybe I can just stick with normal 18 freewheel? But people seem to recommend WI freewheels and DOS is just 20$ more than normal WI freewheel? I could simply buy two different cheap freewheels to test, but on other hand I would like to build a bike that will last a long time. If the chainline is not a big issue with DOS, I willing to give it a try.


Thank you in advance.
Hope to hear your advice.
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