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Thread: 2-speed setups?

  1. #1
    working on progress treebound's Avatar
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    2-speed setups?

    I've had an idea in the back of my mind for awhile now, maybe I should just keep it there 8-).

    I've been thinking of using a singleator chain tensioner and running just a front derailleur. Sort of a singlespeed with a hill gear. Has anyone done this? Any issues that you can think of?

    Thanks for any specs, details, thoughts, links, pics,....

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    It won't work well, you'll always have a bad chainline and the singelator isn't designed to be used like that. I'm not sure that it can even take up that much slack. If you want to switch gears on the fly, than get an IG hub. If you want a bailout gear, use a flip-flop, double cog, or double-ring/double-cog set up.
    I have a front brake, but I only use it for slowing or stopping.

  3. #3
    Senior Member beeftech's Avatar
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    You're a bit behind...

    But try studying these guys, they already made it to 11.
    recordgroupset1.jpg
    And these guys do it with computers.
    Di2_GROUP-480-90-480-70.jpg

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    I Love My Dream
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    Trail/back road gearing


    Road gearing


    Paul Melvin tensioner


    The only bike more functional than a SS is a 2 speed.
    It's none of my business what other people think of me.

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    big ring MIN's Avatar
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    you should run white industries DOS ENO freewheel and call it a day.

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    working on progress treebound's Avatar
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    Thanks Saddle_up, that's close to what I was looking for. The other inputs are appreciated as well

  7. #7
    dsh
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    Quote Originally Posted by Saddle Up View Post
    The only bike more functional than a SS is a 2 speed.
    What about a 3-speed? Triple crank and you're so there!

    Looks awesome, by the way.

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    Live without dead time
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    Why not just run a rear deraileur and go 1x8?
    Rich

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    Elitest Murray Owner Mos6502's Avatar
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    Quote Originally Posted by beeftech View Post
    And these guys do it with computers.
    Sounds kinky.

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    whats the point? manually changing gears rather than changing them on the fly seems rather unnecessary and a pain in the ass. if you have horizontal/vertical dropouts and all the braze-ons, why not add shifters and derailers as well?

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    Elitest Murray Owner Mos6502's Avatar
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    If he was running a front derailleur, he could change them on the fly...

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    working on progress treebound's Avatar
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    That's my thinking, simplify the bike, but keep the front derailleur to avoid the manual gear change.

    The two-cog freewheel is interesting but I don't want to have to adjust the rear wheel to change gears. I've got a Fillmore and don't think I've flipped the wheel on it even once yet.

    I've got a couple of old 10/12 speed roadbikes that I'm thinking of converting. If I get one converted and functional I'll probably flip the Fillmore wheel to the fixed side and leave it that way.

    Just having fun playing with bikes and trying something a little different.

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    I just wanna ride stryper's Avatar
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    you should just run a 1 x 2. That way you only have a rear derailleur, instead of a rear tensioner and a front derailleur. Think about the clean lines here, not about being unique.

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    I've run a dérailleur-less double front on a couple homebuilt choppers. Changing gears is a snap. Would be nice to bomb out to the trails in high gear, flop the chain over and hit some singletrack. That Specialized looks fun.
    Quote Originally Posted by Santaria View Post
    because physics has more street cred than tarckstars.

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    STFD mcgreivey's Avatar
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    Changing the front by hand isn't a big deal, though you do get your hands dirty.

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    Antarctica awaits WoundedKnee's Avatar
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    I was wondering, is it possible to have multiple gears(like a 10-speed) without coasting? What would you call that? Because honestly coasting bikes are dangerous for me to ride now.

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    Senior Member thedutchtouch's Avatar
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    Quote Originally Posted by WoundedKnee View Post
    I was wondering, is it possible to have multiple gears(like a 10-speed) without coasting? What would you call that? Because honestly coasting bikes are dangerous for me to ride now.
    read the threads about the s3x hub. 3 speed fixed gear. that's the closest you'll get.


    having a rear derallieur on a fixed gear is a recipe for disaster

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    Quote Originally Posted by treebound View Post
    I've been thinking of using a singleator chain tensioner and running just a front derailleur. Sort of a singlespeed with a hill gear. Has anyone done this? Any issues that you can think of?
    Single idler tensioners like the Singleator won't take up much chain so your rings would have to be pretty similar in size. IIRC the limit is about 5-6t difference. The Melvin would wrap up more chain.

    But IMHO it seems silly to have both a FD and a tensioner. You could be better off with just an older rear derailleur like a Huret Svelto which is no bulkier than a Melvin and has enough adjustment that you can limit travel to two cogs. I do this to add gears to Sturmey Archer hubs but you can just run two cogs on a freehub or FW with spacers.


    Svelto, Sturmey 4 speed FM hub, KMC 1/8" chain, 18t Nexus cog and 24t HyperGlide cog.

    2 cog setups shift great, much better than front shifts. Even with crappy cogs and chains from the '70s. With Hyperglide cogs and modern chain, shifting is amazing, even on the 22-34 I did for the wife. Chainline is great compared to a normal derailleur set-up.

    Another possibility is that Sturmey is coming out with a modern 2 speed kickback hub w/coaster brake.

  19. #19
    working on progress treebound's Avatar
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    That's an interesting setup combining an internal gear with a derailleur set up. I've got a 700c wheel with a 7-speed IG hub but it takes a different type cog/sprocket.

    I thought I might be stretching the envelope in the SS/FG section asking about 2-speeds, I'll head to a different sub-forum if I revisit the 7-speed hub use.

    I've got some thinking to do, probably end up with three winter projects.

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    Elitist carleton's Avatar
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    Quote Originally Posted by beeftech View Post
    You're a bit behind...

    But try studying these guys, they already made it to 11.
    recordgroupset1.jpg
    And these guys do it with computers.
    Di2_GROUP-480-90-480-70.jpg
    Awesome.

    Next people are gonna ask for water bottle holders and a way to take off wheels without having to use a 15mm wrench.

  21. #21
    Effortless Power ... TboneZX11's Avatar
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    You could always run a surly dingle: http://harriscyclery.net/itemdetails.cfm?ID=2466

  22. #22
    littlecircles bmike's Avatar
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    running a surly dingle cog 17/19 with 32/34 up front.
    saving my pennies for a dos eno freewheel from white ind.

    flip flop wheel on my soma juice, so i can run the same ratios fixed or free, depending on mood.

    i had it setup on my crosscheck prior... with a flop for a single ss.


  23. #23
    Senior Member ken_matthews's Avatar
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    Quote Originally Posted by beeftech View Post
    You're a bit behind...

    But try studying these guys, they already made it to 11.
    recordgroupset1.jpg
    And these guys do it with computers.
    Di2_GROUP-480-90-480-70.jpg
    New Yorker...figured as much...

    more importantly TREEBOUND, what did you settle on for your 2-fer setup?

  24. #24
    Senior Member frymaster's Avatar
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    i'm confused....

    what was wrong with this?

    http://www.bikesdirect.com/products/...kilott_s3x.htm
    "Let's try and keep the constructive answers in the commuting forum." --SheistyMike

  25. #25
    Old fart JohnDThompson's Avatar
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    How about a 2-speed coaster hub?



    There's usually some on eBay:
    http://shop.ebay.com/i.html?_nkw=ben..._dmd=1&_ipg=50

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