CRF250L Sidecar

Discussion in 'Hacks' started by Lapchik, Jul 15, 2016.

  1. High Octane

    High Octane Long timer

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    Way cool
    #41
  2. vintagespeed

    vintagespeed fNg

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    haha, i love this thread. subscribed!

    my niece Kins has CP and will probably never be able to ride conventionally. now u got me thinking... i appreciate that. :thumb
    #42
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  3. Lapchik

    Lapchik Tinkeritis posterboy

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    Latest update, straight from the boss.

    #43
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  4. MNimum

    MNimum Been here awhile

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    Finally someone explaining what's going on in that garage in a way that makes sense! :thumb
    #44
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  5. shiryas

    shiryas Dragon with matches

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    Lapchik,

    Awesome project for you, I am glad the Boss thought of it and is keeping you in line.

    If you end up using the HF tubing roller a bunch, look into what Troy at Swag Off Road is doing with it. He has kits for some weld on wings which reduce the resistance on the wheel and an addition kit that uses a HF bottle jack for down pressure and an electric tube threader for powered drive. They also sell almost 60 dies for this set up also. I have been extremely happy with mine as well as the Portable Bandsaw Table from them.

    http://www.swagoffroad.com/SWAG-Weld-On-Wings-For-Harbor-Freight-Tubing-Roller-_p_50.html

    Cheers, Chris
    #45
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  6. Lapchik

    Lapchik Tinkeritis posterboy

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    Yeah, I've checked that stuff out. I'll probably build my own wings eventually. I did build n my own square tube dies a while back.
    #46
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  7. Lapchik

    Lapchik Tinkeritis posterboy

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    Three videos since the last update. Been busy. Not really busy in the shop, busy busy life.





    #47
  8. Box'a'bits

    Box'a'bits In need of repair

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    The 3rd video in the series has 'This video is private'.
    #48
  9. Lapchik

    Lapchik Tinkeritis posterboy

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    Oh! I forgot that was scheduled. I'll change it when I get home, otherwise I think it goes live tomorrow
    #49
  10. vintagespeed

    vintagespeed fNg

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    cool stuff! for your outrigger to sidecar frame adjustment; you could sleeve 3 or 4 bolt holes in the frame and make the outer plate with a row of bolt holes, that way it can be adjusted forward or back an inch at a time, or whatever. would be safer/stronger than u-bolts, imho. especially if it's gonna see dirt.

    edit: i'd re-use those arms on the shield in addition to your lower mounts, it's going to be under alot of stress from wind force and just having those bottom mounts might not be enough or might crack it.
    #50
  11. Lapchik

    Lapchik Tinkeritis posterboy

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    I plan on welding brackets in once I figure out where the bike to car links need to be. The u bolts will just be temporary.
    #51
  12. Lapchik

    Lapchik Tinkeritis posterboy

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    Latest update


    <iframe width="560" height="315" src="" frameborder="0" allowfullscreen></iframe>
    #52
  13. High Octane

    High Octane Long timer

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    I vote for no flag, just Rowan's smile
    #53
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  14. cycleman2

    cycleman2 Been here awhile

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    Well done and enjoy the interaction between you and your daughter. Looking forward to the finished project.
    #54
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  15. Lapchik

    Lapchik Tinkeritis posterboy

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    Seat belt or not to seat belt . . . .that is the question.

    What I think:
    Pros
    Rowan weighs about a third of a half of feather, and it may help keep her in the seat should we hit some washboards or other pot hole type stuff on our gravel road rides
    She asked for one, and I think she would feel safer and more secure with it [even if it doesn't really do anything or if I hook it up to pull loose easily]
    Will keep her from hitting the front of the cockpit should we stop suddenly [she wears a helmet at all times on the bike too]

    Cons
    Flip over crash, she's strapped in and sticking out above the cockpit.
    I've never seen a sidecar with a seat belt before
    Just a lap belt may be insufficient to hold her in, might do more damage than good in a crash.

    If no belt, she will get thrown away from the bike in a crash, just like I would, and not be trapped in it.

    Thoughts? This is something I haven't been able to think through and come to any real decision on.
    #55
  16. pagomichaelh

    pagomichaelh Been here awhile

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    Our thinking:

    Our son prefers the seat belt for the feeling of security, esp because he's prone to doze off. Places here the road's are pretty bad, keeps him from getting bucked out.

    Even without a seat belt, you can't guarantee being thrown clear, and with one there could be an advantage to the belt holding the child in.

    Running this through Von Neumann game theory, almost neutral, maybe a slight positive to the belt.

    The slight positive, coupled with his preferences, means that we run with the belt.
    #56
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  17. cycleman2

    cycleman2 Been here awhile

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    A friend of mine takes his grandkids in the sidecar and he installed a seat belt. Only way he will take the kids for a ride. With your cargo you will want to drive slower. Dealing with a wreck is always going to be there with our without the belt, but overall its the best way to go under the circumstances with really young kids aboard.
    #57
  18. MNimum

    MNimum Been here awhile

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    Seat belt - all the way. At her current size she is nearly wholly contained in the side car. About her only exposed area will have a helmet.

    You'll be driving cautiously but need to protect from the unknowns of unexpected bad roads, road debris and other cars. It would seem the more you can keep her down in the chamber the much better her outcome. Examples:
    • Car pulls out or turns in front of you and you hit it. Keeps passenger from flying forward.
    • Car rear ends or hits you from the side. Keeps passenger from flying out.
    • Hit severe bump or road debris. Keeps her in the seat.
    About the only question is - would it be better in a rollover. People are much for frequently killed or seriously injured in car and truck rollovers when not belted in and only partially leave the cabin. Might as well keep her as much in the chamber as possible so she gets scrunched into it instead partially ejected.

    My two cents.
    #58
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  19. Ridn3

    Ridn3 Lopsidd

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    Would you use a seat belt when riding in a MG Midget, Austin Healy Sprite or early Miata? What's the difference?
    #59
  20. MNimum

    MNimum Been here awhile

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    Yes. But me and seat belt value go way back.

    And I wouldn't put my kid in any kind of ride at the fair that didn't have one. Which, after watching some of the Kory's Rides vids, might be a better analogy. :-)
    #60
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