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  1. MC_Kloppedie on

    I built it from scratch. It was intended as a have-fun and bikepolo bike, hence the flip flop wheel. But the guy with whom I would play bike polo with stopped. So now it’s my have-fun/everyday bike.

    I had to get rid of [the old bike](https://i.reddituploads.com/39e80de8726f4aedae793679849718bc?fit=max&h=1536&w=1536&s=5121b937b3d406a55875ea5900aa106b), and a friend of mine had this abandoned bike in his garage. All the parts are scavenged except for the backwheel and I had to replace the crank last year. It stands the whole day at the trainstation so I can’t have it too clean, but it is well maintained. The frame is a bit weared off at the head, I really abuse the bike. It looks like a POS, but it’s a though, fun bike that is serving well.

    **Atlas?** MTB frame, If you have more info please reply

    Back wheel: 48 spoke BLB flip-flop Freewheel:16T Fixed:13T, I laced and trued it myself.

    Front wheel: Old Mavic

    Crank: BLB 42T

    Mountain bikes have [vertical dropouts](http://www.slowtwitch.com/articles/images/0/62560-largest_1_Habanero_dropouts.jpg), the derailleur makes sure that the tension is kept on the chain. Single speed bikes have a [horizontal fork end](https://en.wikipedia.org/wiki/Fork_end#/media/File:Horizontal_rear_dropout.jpg), that way you can put the tension on your chain by moving the axle backwards or forwards.

    I have different teething on my sprockets so I had to remove the dropouts to regulate the tension on my chain. So I calculated which sprockets I would use and determined the length of movement I would need in the fork end. I drew it in autocad and had a friend make it and weld it.

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