Best Chair for a Sportster?

Discussion in 'Hacks' started by ag_streak, May 27, 2012.

  1. hhkiwi

    hhkiwi Been here awhile

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    The DMC frame and hardware do look nice but I don't think the connection on your last photo is correct. A solid rod end/eye bolt should go into a clevis - I've never seen two solid rod ends/eye bolts joined like that before.
    #41
  2. ag_streak

    ag_streak Tiene Ruta Cuarenta?

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    That's what I was thinking. I sent Jay some photos and asked that very question... thanks!!!

    (however, there are plenty of such connections in pictures of other people's work on these pages...)
    #42
  3. hhkiwi

    hhkiwi Been here awhile

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    While it is obviously possible to make a connection with two solid rod ends, it is neither an elegant, nor a technically preferable solution because the forces along the rod do not line up, i.e. the joined rod ends introduce a step which results in a corresponding moment on the connecting bolt. The connection may be OK as long as everything is designed to cope with the forces but it is still not elegant IMHO... Let us know what Jay says.
    #43
  4. Pago Cruiser

    Pago Cruiser Been here awhile

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    I have a couple conections of that type on my hacks. No problems as long as you are using good bolts. Don't know what Jay uses, but I put grade 8 in all mine. A 1/2" grade 8 bolt (fine thread is preferred) in shear is good for about 17000 lbs. The only way you're gonna see those forces are if you hit a wall doing about 70; but you'll have bigger problems to deal with...:eek1

    Oh, to the earlier poster with a tire question; my front and hack tires are Hedenau K60's.
    #44
  5. hdgypsyman

    hdgypsyman Part Time Adventurer

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    I believe that your suspension on your bike should be preloaded similiar to what it will sit with your weight on it. This will effect all of your settings on attaching the hack frame.
    Of course I'm a nube at this and could be wrong.........

    I'm in the process of attaching a Dnepr hack to a 2005 R1200GS using a DMC subframe /mounts and I also questioned Jay on the way the upper mounts lacked clevises. He assured me that style of connection is more than adequate for the loads that it will see.

    I'm looking forward to following the rest of your build!
    #45
  6. ricmachado

    ricmachado Been here awhile

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    I finally got all parts together to get mine... :clap

    Still have few things to do such as hook up the lights, install the windshield, get the new seat and change the hack suspension for a better one.:huh

    Here is a picture of the final setup and the test ride with my loyal (and brave) riding partner :lol3

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    #46
  7. FR700

    FR700 Banned

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    I like it.

    That looks like it's gonna be a lot of fun.

    Light , narrow and low ... way to go :thumb



    .
    #47
  8. ag_streak

    ag_streak Tiene Ruta Cuarenta?

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    I have an average amount of mechanical and motorcycle aptitude, but this was my first foray into sidecars, so I was a bit apprehensive. If you are too... DON'T BE.

    I knew only two things about hack alignment. Toe-in and lean-out. Well, with the help of a 4-foot bubble level, some painter's tape on my garage floor for a straight edge, and a tape measure, I was able to get the rolling Kenda chassis sold by Jay at DMC to track straight and sweet on MY FIRST TRY!

    After ten minutes of figure eights around the parking lot (right turns are borderline suicidal with NO weight on the 'car) I felt OK to take it on the highway. There was absolutely ZERO drama at 70 mph. :deal

    Of course, once I get a tub built and mounted, the alignment setup may change, but I'm happy to report that this thing handles just fine on my first, newbie try! :freaky

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    #48
  9. hhkiwi

    hhkiwi Been here awhile

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    That looks very cool!!

    [SIZE=+0][/SIZE]
    I also found the right turns scary. Without a passenger or load right turns are an interesting experience...

    The other thing I found is that the steering effort increased greatly. I’d read about it of course, but I was still surprised what a difference the sidecar made to the effort of getting the rig around a corner.


    What are your plans for the body?
    #49
  10. ag_streak

    ag_streak Tiene Ruta Cuarenta?

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    I thinking fiberglass over plywood. Something like this:

    http://www.advrider.com/forums/showthread.php?t=805104

    I already started. I'll try to get some pictures. 3/4" birch plywood for the floor and bulkheads. 1/2" for the sides. Door skins or something thin and flexible for the curves. A couple of layers of cloth and some epoxy resin should produce something strong and heavy.
    #50
  11. hhkiwi

    hhkiwi Been here awhile

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    I like it! You have some serious woodworking skills!!
    #51
  12. ag_streak

    ag_streak Tiene Ruta Cuarenta?

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    I'm about 75% done with the framing of the tub I'm bolting to the Kenna rolling chassis frame from DMC.

    1/2" oak (7-ply) side panels:

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    #52
  13. Bobmws

    Bobmws Curmudgeon At Large

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    Nice lines on your sidecar build.
    It may be the angle of the pics, but it looks a bit large/long in proportion to the bike.
    #53
  14. jaydmc

    jaydmc Long timer

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    Looking good, One thing I did see, On your struts there should be jam nuts around the threaded part up against the black powder coated part. With out these in time play will develop in the strut and given enough time they could fail.
    Jay G
    DMC sidecars
    www.dmcsidecars.com
    866-638-1793
    #54
  15. ag_streak

    ag_streak Tiene Ruta Cuarenta?

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    Thanks, Jay! Understood. I was wondering why I had two extras left over! :freaky

    Damn, I have to unthread those suckers again! It takes a while! :cry
    #55
  16. ag_streak

    ag_streak Tiene Ruta Cuarenta?

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    Well, it's been over a year since I posted any progress on this project. Life keeps getting in the way!

    I called in some help by hiring a local boatyard to finish the fiberglass work. I did the inside and a couple of layers on the outside, and wasn't happy with the results. The guy I hired put an additional layer of tape on all the outside seams, wrapped an additional layer of cloth, and filled and faired it. Here it is with a layer of black primer, that he was using just to see the low spots better. Another layer of fill and sanding, and he'll give it back to me for final painting.

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    #56