The Albatross: 1150GS Sidecar Build

Discussion in 'Hacks' started by PowderMonkey, Jun 2, 2018.

  1. PowderMonkey

    PowderMonkey Been here awhile

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    Mike,

    Not my subframe. That part was DMC, as it saved me some fab time. There’s so much adjustability there, I’m not sure that it matters? I never would have thought of that, if it were to be a better mousetrap.

    Seth
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  2. arbalest

    arbalest Long timer

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    Seth,

    Not the subframe. I misspoke. I would think the sidecar frame would need to be level when the bike is laden
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  3. PowderMonkey

    PowderMonkey Been here awhile

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    Oh! Of course! This is all mock-up. It’ll be done the right way when it goes together for good. I figured it was close enough for now. Half of what I do seems to be one step forward, and two steps back.
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  4. REBORN

    REBORN Adventurer

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    I went in front of the cylinder on my 95 gs just posted picture on the aluminum 95 build thread
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  5. PowderMonkey

    PowderMonkey Been here awhile

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    Where does that put your offset on the sidecar wheel?
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  6. REBORN

    REBORN Adventurer

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    12" ahead
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  7. PowderMonkey

    PowderMonkey Been here awhile

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    That’s about where mine is too.
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  8. REBORN

    REBORN Adventurer

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    image.jpeg Here is a picture of my setup the frame has a mounting point for the strut extending about 2 1/2"
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  9. PowderMonkey

    PowderMonkey Been here awhile

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    Does anyone know what the bmw hardline connections are? Are they 10mm x 1.0 like the banjo bolts? Or are they some sort of BST/NPT nonsense?
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  10. davebig

    davebig Another Angry Hun !

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    The ones I just replaced on one of the K's was 10 mmx 1.0 I think that is the regular Euro brake thread.
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  11. PowderMonkey

    PowderMonkey Been here awhile

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    That’s the answer I was hoping for.
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  12. DRONE

    DRONE Dog Chauffeur

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    Hardline connections? What are you talking about -- the brake line connections to the ABS pump? If yes, then just ordinary metric. I don't recall the diameter and thread pitch (though 10x1.0 sounds about right).
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  13. PowderMonkey

    PowderMonkey Been here awhile

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    Yessir.
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  14. Old Mule

    Old Mule Long timer

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    I think that that connection could be straightened and simplified- just my opinion.
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  15. PowderMonkey

    PowderMonkey Been here awhile

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    Alright. So, some progress has been made. I bought some shocks off the fleamarket for an RT, gas charger stockers with springs for a sidecar setup. Everything seems legit after install, but I don’t know if it’s just my mind playing tricks, but that shit seems super low. I’m at 6” even for ground clearance at the rear portion of the skid plate. Honestly, I didn’t measure with what I started. All I can say, is it looks low. Interestingly enough, the front shock is exactly the same length as what came off the front . Anyone have any measurements from their bash plate? Maybe it’s worth getting just the rear shock?

    Meanwhile, I forged ahead with the forward mount fabrication. I found some sw Motech crash bars on eBay for cheap, and thought I might be able to repurpose them for the front mount. It work d out better than I imagined. I still have the lower mount to connect to the lower subframe, but I think this will be super solid. IMG_4041.jpg IMG_4044.jpg IMG_4043.jpg IMG_4046.jpg
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  16. PowderMonkey

    PowderMonkey Been here awhile

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    Pics of the shocking . IMG_4036.jpg IMG_4037.jpg

    Also, I bought a new welder to get used to:
    57023640883__029B951D-CFC0-4CFB-A870-B3FB556782F8.jpg
  17. PowderMonkey

    PowderMonkey Been here awhile

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    Can any of you GS based sidecar owners tell me what kind of clearance you have under you subframes? I probably should have measured this before I swapped out the shocks....
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  18. davebig

    davebig Another Angry Hun !

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    I have to believe lower is better for the tug , I'm not in favor of where the front upper attaches to the sidecar frame even DMC quit doing that so it must be a problematic idea.
    I would consider losing the SW Motech bars , building a curved front adjustable bar to the front mount it would need to be moved to adjust valves and if at all possible the threaded bits need to go at the bottom. Just my .02 DB
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  19. PowderMonkey

    PowderMonkey Been here awhile

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    Dave, thanks for the input on height. The crash bar will be used for the forward mount of the sidecar. It’s gonna get a middle brace to the other side. It attaches to all the same points that a forward subframe would, and is 1/8” tube, so I’m gonna use it.
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  20. PowderMonkey

    PowderMonkey Been here awhile

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    Finished up the crash bars and forward mount. I may still make a brace forward, below, or above the telelever. IMG_4050.jpg IMG_4058.jpg IMG_4056.jpg
    I also mounted the other side, and attached everything to the lower subframe. Seems rugged.
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