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  1. #1
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    Possible to ride with a 1yr old child with a rearmounted seat on a single speed bike?

    Hey guys, so my gf just bought herself a single speed bike and it's great because now we get to bike together more often now.

    Question is though, she wants to take her 1yr old sister along as well (not all the time but she would like to take her on several of our rides and if we do take her it would be on designated bike paths and not on the street). Would it be safe to mount a rear seat onto her bike frame? Meaning we would have to drill into the frame to bolt on the seat. She has thought about getting a trailer hitch but feels that the rear seat would suit her best because she would have her close to her at all times. Her bike is made out of steel if that makes a difference. We're just worried that drilling into the frame would weaken it and put the baby at risk.

  2. #2
    The Recumbent Quant cplager's Avatar
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    Quote Originally Posted by Ervino View Post
    Hey guys, so my gf just bought herself a single speed bike and it's great because now we get to bike together more often now.

    Question is though, she wants to take her 1yr old sister along as well (not all the time but she would like to take her on several of our rides and if we do take her it would be on designated bike paths and not on the street). Would it be safe to mount a rear seat onto her bike frame? Meaning we would have to drill into the frame to bolt on the seat. She has thought about getting a trailer hitch but feels that the rear seat would suit her best because she would have her close to her at all times. Her bike is made out of steel if that makes a difference. We're just worried that drilling into the frame would weaken it and put the baby at risk.
    I wouldn't drill into any frame unless you really knew what you were doing. I'd go to a reputable local bike shop and see what they can do for you.

    There are pros and cons of putting on a baby seat compared to a trailer. It's easier to maneuver with a baby seat although it's harder to balance and if the bike falls over, so does the baby seat, but the trailer remains upright regardless (I unfortunately have a fair bit of evidence for the latter). If your girlfriend is an experienced cyclist, the baby seat should be no problem.

    One other option: Put the baby seat on your bike.

    Cheers,
    Charles
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  3. #3
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    Don't drill the frame. Rear rack mounted baby seats are designed to mate with particular models of rear racks, which mount to to the seatstays and dropouts, using either braze-on fittings or special clips. As others have suggested, if you're not clear on the details it would be wise to ask an experienced bike mechanic.

  4. #4
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    IMG434.jpg

    Use the seat post collar to mount a rack and then attach the seat to the rack. Also makes a good grocery carrier. I found I had to replace the QR with a bolt to get really secure though. Also ge sure to get the strongest rack you can. Babies are previous cargo so don't cut corners on weight here.

  5. #5
    The Recumbent Quant cplager's Avatar
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    Quote Originally Posted by krobinson103 View Post
    IMG434.jpg

    Use the seat post collar to mount a rack and then attach the seat to the rack. Also makes a good grocery carrier. I found I had to replace the QR with a bolt to get really secure though. Also ge sure to get the strongest rack you can. Babies are previous cargo so don't cut corners on weight here.
    Edit: I did not look closely enough at the pictures. I thought you were suggesting a seat-post only rack. What you are suggesting is probably fine.

    Most seat post only racks I've seen are rated for 20 lbs which is not enough for kid/seat. Not to mention the failure mode would be horrible. I would strongly recommend against doing that (read: seat post only rack).
    Last edited by cplager; 03-11-13 at 05:43 PM.
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  6. #6
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    Quote Originally Posted by cplager View Post
    I wouldn't drill into any frame unless you really knew what you were doing. I'd go to a reputable local bike shop and see what they can do for you.

    There are pros and cons of putting on a baby seat compared to a trailer. It's easier to maneuver with a baby seat although it's harder to balance and if the bike falls over, so does the baby seat, but the trailer remains upright regardless (I unfortunately have a fair bit of evidence for the latter). If your girlfriend is an experienced cyclist, the baby seat should be no problem.

    One other option: Put the baby seat on your bike.

    Cheers,
    Charles
    I was thinking of letting the bike shop do the drilling since they are more experienced than I. I have told her that I wouldn't mind putting the baby seat on my bike but she'd would rather hold the baby instead.

    Quote Originally Posted by brianr2600 View Post
    Don't drill the frame. Rear rack mounted baby seats are designed to mate with particular models of rear racks, which mount to to the seatstays and dropouts, using either braze-on fittings or special clips. As others have suggested, if you're not clear on the details it would be wise to ask an experienced bike mechanic.
    I'll keep that in mind.....thanks

  7. #7
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    Had 50kg on this one. It holds up fine. But it is a heavy steel rack. I carry 30kg of 6 year old on it no problem.

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    Don't see the need for any drilling. When I had a rear child seat it clamped onto the seatstays of the frame. Worked fine with my road bike.

  9. #9
    The Recumbent Quant cplager's Avatar
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    Quote Originally Posted by krobinson103 View Post
    Had 50kg on this one. It holds up fine. But it is a heavy steel rack. I carry 30kg of 6 year old on it no problem.
    Sorry. I didn't look closely enough at the picture (although I did look).

    I thought you were suggesting a seat-post ONLY rack. And that's what I was strenuously objecting to.

    What you're proposing is something that attaches to BOTH the seat post and the seat stays. Yes, that should be fine.


    Hmmmph.
    Last edited by cplager; 03-11-13 at 05:43 PM.
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  10. #10
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    This is the seat we were looking at
    http://www.amazon.com/CoPilot-Limo-B.../dp/B000G1YO2I

  11. #11
    Senior Member rebel1916's Avatar
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    That seat comes with a rack. It is great. If you have a frame that won't accept the rack, I would suggest getting a beater bike for kid hauling duty before drilling. I have an older Hardrock and it works great for this

  12. #12
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    That seat will work fine. I also built a beater around the rack. Don't want that kind of weight on my 'fun' bike.

  13. #13
    Senior Member Turbo231's Avatar
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    I'm a bit confused by this tread...why not get a seat that just clamps to the bike? I think Bell has them at the world famous Walmart for $40ish. If she ever gets a different bike, just move it over.

    http://www.walmart.com/ip/Bell-Class...d-Carrier/3915

  14. #14
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    That seat either comes with a rack, or is mounted to one. Its the same concept.

  15. #15
    Senior Member delcrossv's Avatar
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    With really little kids, I recommend a trailer. The risk of TBI of you take a spill is a lot less in a trailer. Save the seat for older kids.
    Lightning P-38 / M5 M-Racer/Ryan Vanguard

  16. #16
    Senior Member Turbo231's Avatar
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    Quote Originally Posted by delcrossv View Post
    With really little kids, I recommend a trailer. The risk of TBI of you take a spill is a lot less in a trailer. Save the seat for older kids.
    Depends on the kid...mine hated having a helmet in the trailer but was fine with it on the rear seat.

  17. #17
    Senior Member delcrossv's Avatar
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    Quote Originally Posted by Turbo231 View Post
    Depends on the kid...mine hated having a helmet in the trailer but was fine with it on the rear seat.
    I haven't had that problem- if they want a ride, they wear a helmet- and no amount of crabbing will save them. IMO it's riskier with a real little kid in a seat as opposed to a trailer. YMMV.
    Lightning P-38 / M5 M-Racer/Ryan Vanguard

  18. #18
    Senior Member timvan_78's Avatar
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    Quote Originally Posted by Turbo231 View Post
    Depends on the kid...mine hated having a helmet in the trailer but was fine with it on the rear seat.
    Same with my 1st kid.

    Kid in trailer with no helmet is OK, IMHO. They are strapped into a 'roll cage'. The kid doesn't bobble-head as much without a helmet as well. ...but when they are on the seat, a helmet is a MUST.

    OP: make sure the GF is super confident/stable before letting her carry a kid in a seat! I don't let anyone other than me carry my kids on a bike seat.

  19. #19
    Senior Member rebel1916's Avatar
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    Just a thought. The weight over the back can make the front end feel vague, and front tire traction is definitely limited on gravel roads. Make sure to keep your weight over the front if you have to steer or brake.

  20. #20
    Senior Member Turbo231's Avatar
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    Quote Originally Posted by timvan_78 View Post
    Kid in trailer with no helmet is OK, IMHO.
    I tend to agree, however if your state/province has kid helmet laws, your kid applies in the trailer, so you are "technically" breaking the law. Last time I saw a kid pulled over for not having a helmet...never.

  21. #21
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    Yes, attach the seat to the bike, it won't be a problem, but you shouldn't need to drill anywhere. Look for online videos on youtube for a tutorial to give you some visual idea, its easy to do yourself. Where I live now most mum's seem to ride single speed bikes with kids seats, and your friend is right, cycling with the child closer is lots of fun.

    Having a step through frame makes a rear mount seat a lot easier too, but not 100% necessary.

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