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  1. #1
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    Want belt drive and internal gear hub...

    I am looking for a folder with both a belt drive and an internal gear hub. I have looked at the Bike Fridays, which look like great bikes. But, custom built they are more expensive and take a long time to be delivered. I may end up with one of those, but first wanted to see if anything else existed.

    The other option I am considering is the Tern Verge S11i. While it does not have a belt drive, it does have the clean drive, which may be enough to keep grease and dirt off my pant legs.

    Are there any other models by other manufactures that have both belt drives and IGHs?

  2. #2
    coprolite fietsbob's Avatar
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    Belt drives are only used with IGH or single speed ..

    If there is a way to get the belt in to the frame, and tensioned . a lot of Bikes can be retrofitted with the Belt drive Kit.

    the types where the chainstay stays above the top run of the chain should work.

    Bike Friday's Tikit, has a separation bolt together in the rear stay loop to let the belt pass thru.

    The Silk, uses something like what was a swing arm on some suspension MTB designs , the rear dropout moves backwards to tension things.

    both have the BB as part of the rear portion. so they fold as one...

    Many of the fold in half DaHon/Tern types may do as well..
    Last edited by fietsbob; 10-12-14 at 10:39 AM.

  3. #3
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    Dahon Curve 20 is available in 3 speed, so has tension adjustment, and the single rear stay is belt-compatible.

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    Senior Member ThorUSA's Avatar
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    Quote Originally Posted by MichaelW View Post
    Dahon Curve 20 is available in 3 speed, so has tension adjustment, and the single rear stay is belt-compatible.
    yeah.... but with limited gear ratios this would mean that you might have a gearing like 10 to 30 .... great for going staright up the wall but not somgood for regular riding
    :-(
    Having fun selling Terns and Dahons for a living. My personal website is also my business website, same as my profile name, therefore no link given to follow forum rules.

  5. #5
    coprolite fietsbob's Avatar
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    So Thor , (following the topic at hand,) whats available in the Belt drive parts for the Sturmey 8 speed ?

    seems the hubs are just the thing for small wheels
    but the cog is bigger than the standard 3 spline at 19t +... 20,23,25.

    the all overdrive 7 of 8 ratios make for not needing such large chainrings/belt cogwheels.

    Gates shows standard 3 spline & screw on Rohloff ,, maybe 9 spline as well for the shimano pattern

  6. #6
    PatronSaintOfDiscBrakes dynaryder's Avatar
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    Dahon had the Mu Rohloff with belt,but they weren't cheap either. If a 4spd hub will work,you could try to find an old Ixi,but they come apart rather than actually folding.

    If your main concern is cleanliness,then a chain guard or one of those chain coverings Dahon and Tern are using will work just fine and greatly expand your choices. Note,that covering is just wire covering used in conduits and is available at hardware stores and Lowes/Home Depot. A couple friends used it years ago for polo to cover chains and exposed rings.

    C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport/Qualifier,Dahon Speed Pro TT,Brompton S6L

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    I find that with lightweight bikes, the advantages of staying light often outweigh the advantages of all those inbetweeny gears. You can always switch the hub.

  8. #8
    Senior Member downtube's Avatar
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    Our Downtube 8H is being introduced for about $700 as a backorder special. The bikes will be shipping at the end of this month.

    The 8H has a Shimano Nexus 8 hub, and Gates belt drive.

    Thanks,
    Yan

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    I just don't get IGHs unless you're trying to build up big beefy arm muscles. My gfs Ciao is so damn heavy, it's nuts. A lot of Dahons have a chain guard on the crank set. Besides, don't kid yourself....ride long enough, and gonna get dirty.

  10. #10
    coprolite fietsbob's Avatar
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    I just don't get IGHs
    Which ones have you tried , Jim?


    Gates Belt drives cannot derail or bend tightly like chains.
    how else to have more than one gear with them?

  11. #11
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    Thanks for the responses everyone.

    I would be open to a three speed if the gear range was large, but the problem with the Dahon Curve is that it only offers 42-77 gear inches. That is not enough at either end.

    As for the Downtube, I did an admittedly quick Google search and found the company website, but could not find any recent reviews, photos of it folded, or videos of the folding process.

    Quote Originally Posted by jimboach View Post
    I just don't get IGHs unless you're trying to build up big beefy arm muscles.
    IGHs are good for commuters as they are cleaner, require less maintenance, and are less susceptible to damage.

  12. #12
    tcs
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    Strida Evo: belt drive, 3-speed internal gear bottom bracket.
    "When man first set woman on two wheels with a pair of pedals, did he know, I wonder, that he had rent the veil of the harem in twain? A woman on a bicycle has all the world before her where to choose; she can go where she will, no man hindering." The Typewriter Girl, 1899.

    "Every so often a bird gets up and flies some place it's drawn to. I don't suppose it could tell you why, but it does it anyway." Ian Hibell, 1934-2008

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    tcs
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    Dynamic Sidekick: 8-speed IGH, shaft drive.
    "When man first set woman on two wheels with a pair of pedals, did he know, I wonder, that he had rent the veil of the harem in twain? A woman on a bicycle has all the world before her where to choose; she can go where she will, no man hindering." The Typewriter Girl, 1899.

    "Every so often a bird gets up and flies some place it's drawn to. I don't suppose it could tell you why, but it does it anyway." Ian Hibell, 1934-2008

  14. #14
    Schwinnasaur Schwinnsta's Avatar
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    What kind of riding are you going to do? Why are you getting a folding bike?

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    I believe this is what you are looking for.
    Gates carbon belt
    7-speed SHIMANO NEXUS 7 rear hub

    TILT 740 FOLDING BIKE Beige B'TWIN - All Bikes Cycling - On sale at Decathlon.co.uk

    And it's cheap but good quality. I have used three of their bikes (BTWIN) and they are very good. I haven't used this one, but tried this in their store and feel it's sturdy and stylish, a bit heavy but can be rolled away when folded. And with that one second fold, but I am not a fun of this mechanism so went for another one . Just google around for the views on their bikes and you will know these are value for money.







  16. #16
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    Quote Originally Posted by tcs View Post
    Dynamic Sidekick: 8-speed IGH, shaft drive.
    I had never heard of a shaft drive, very cool concept. Unfortunately, there are very few reviews of the Sidekick 8 available online, and those I could find were not terribly complimentary to either its build quality or its ride relative to other bikes in its price range. Too bad too as the idea sounds awesome.

  17. #17
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    Quote Originally Posted by Schwinnsta View Post
    What kind of riding are you going to do? Why are you getting a folding bike?
    I have a 23 km commute with a decent amount of climb in either direction. Sometimes I bike all the way there and back; other days I simply bike to the train station.

  18. #18
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    Quote Originally Posted by tcs View Post
    Strida Evo: belt drive, 3-speed internal gear bottom bracket.
    I had seen these around town a few times. They are very interesting bikes. Unfortunately, with these, I am not sure I would like the more upright riding position. And again, the three speed range is limited, which would be a problem for me on the hills I encounter on the way to/from work.

    Thanks for the suggestion though.

  19. #19
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    Quote Originally Posted by nz6666 View Post
    I believe this is what you are looking for.
    Gates carbon belt
    7-speed SHIMANO NEXUS 7 rear hub

    TILT 740 FOLDING BIKE Beige B'TWIN - All Bikes Cycling - On sale at Decathlon.co.uk
    It is actually hard to find reviews on this specific model, though like you said the Decathlon line is generally regarding as being of good quality. That being said, I am not sure about the fold mechanism. I wish I could find something online that reviews this specific bike.

  20. #20
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    There are some video reviews such as this one:
    https://www.youtube.com/watch?v=fI4TjxRE0tY

    Best if you can try it if a Decathlon store is available to you.

  21. #21
    Schwinnasaur Schwinnsta's Avatar
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    Quote Originally Posted by Bmoorhouse View Post
    I have a 23 km commute with a decent amount of climb in either direction. Sometimes I bike all the way there and back; other days I simply bike to the train station.
    For the train I think Brompton, only 6 speeds, on the slow side, and expensive, but it has a great fold and use a road bike for the full ride in. Brompton can do it all but that is what I do. Also consider a Bike Friday tikit.

  22. #22
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    Quote Originally Posted by Schwinnsta View Post
    For the train I think Brompton, only 6 speeds, on the slow side, and expensive, but it has a great fold and use a road bike for the full ride in. Brompton can do it all but that is what I do. Also consider a Bike Friday tikit.
    Thanks for the suggestion.

    I assume that you ride round trip on the days you ride in. What I am actually trying to do is bike in and ride the train home with the bike or vice versa, so I can ride again the next day. Hence, I need a bike that can handle the full commute and fold up for the train.

    I looked at the tikit, but I would like to stay away form 16 inch tires. If I were to go with a Bike Friday, it would probably be the Silk.

  23. #23
    Nobody mconlonx's Avatar
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    As a shop mechanic who has dealt with and test rode bikes with belt drives (Spot, Trek) I tend to think that belt drive is overrated. For as much positive as belt drive brings to the table, there are also negatives.
    I know next to nothing. I am frequently wrong.

  24. #24
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    Quote Originally Posted by mconlonx View Post
    As a shop mechanic who has dealt with and test rode bikes with belt drives (Spot, Trek) I tend to think that belt drive is overrated. For as much positive as belt drive brings to the table, there are also negatives.
    I am aware of potential issues with snow accumulation, but have not read many other negative issues associated with the belt drives. Can you give me an example or two? Thanks for the input.

  25. #25
    jur
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    Quote Originally Posted by Bmoorhouse View Post
    I am aware of potential issues with snow accumulation, but have not read many other negative issues associated with the belt drives. Can you give me an example or two? Thanks for the input.
    +1,I also have a very idealistic view of belt drives, please give me some info so I don't go blowing bucks that I might be sorry about.

    Two issues I think might be issues... One, you can't stand on the pedals (something I do all the time on climbs) and two, the belt is prone to skipping unless snubbed very well.
    My folding bike photo essays www.dekter.net/

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