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Thread: Trainer only frame design

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    Default Trainer only frame design

    Good Morning,

    Hope you are all doing well!

    I am working with a customer who would like a frame built that will only be used for training/racing on his smart trainer via Zwift. The trainer is of the variety where the rear wheel is removed and the dropouts mount to the trainer via quick release.

    Aside from factoring in his weight and that he is a strong rider/racer, do you have any suggestions as to if the tubing choice, CS length, etc...should be any different than what I would use if this was going to be ridden on the road?

    I was beginning to wonder if due to how stationary the rear of the bike is while attached to the trainer, even during sprint, if shorter and more substantial CS and ST might be appropriate.

    Thanks!
    JD
    JD Reich

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    Default Re: Trainer only frame design

    I would make the frame as you normally would, and when it's atop a trainer it's a trainer bicycle.

    Serious.

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    Default Re: Trainer only frame design

    Thank you Richard, I appreciate that. Will do.

    I assumed I was probably over thinking.

    Have a great afternoon!
    JD Reich

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    Default Re: Trainer only frame design

    Just some thoughts. Threaded 68mm. bb, Easy to fix, always replacements available, a drain hole, no brake cable stops, No internal derailleur cables, set collar so it can be replaced, 27.2mm. seatpost dia., press in headset cups, can the frame be internal coated or plated with something to prevent rust/corrosion? Short chain stays may equal poor shifting, clamp on front derailleur. All things that might avoid problems from the sweat.

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    Default Re: Trainer only frame design

    The only thing I would add to the above is looking into a 2-coat powder coating or maybe Cerakote.

    I don't know the specifics of the 2-coat system but my local powdercoating shop suggested it for stuff that lives outside + near the ocean. Their standard corrosion resistant powder coatings break down with extended UV exposure.
    elysian
    Tom Tolhurst

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    Default Re: Trainer only frame design

    The only aspect i will bring to this thread is that of few plans remain static forever. Needs shift, bikes come and go over the years, what might be viewed as a trainer stand bike in it's beginning could well be pulled into some other service 5 years later.

    So my suggestion is to build a bike that you can ride outside. Andy
    Andy Stewart
    10%

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    Default Re: Trainer only frame design

    I've never understood why these trainer bikes have a functional front wheel - it takes up space and has weird wheel-flop characteristics. I'd suggest a reasonably normal looking frame but with a special front-end.

    You don't need / want a headset so instead could have the bars rigidly mounted to the frame. The 'fork' can be replaced with a nice height-adjustable floor support, maybe with a build in holder for his PC monitor or ipad?

    I'd take cues from the Tacx bike
    https://tacx.com/product/neo-bike-smart/

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