R80ST gets the GS Treatment

Discussion in 'Airheads' started by Airhead Wrangler, Dec 24, 2008.

  1. IronSpadeCycles

    IronSpadeCycles Button Pusher

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    I have a 1978 R80/6 that I'm thinking of doing the same thing as you have here. My engine top cover, air box and front cover is all made from cast aluminum, the snorkel is plastic but everything else is heavy aluminum. I would like to get the bike down to about 300lbs before the 8-10 gallons of fuel. I will most likely make my own one off tank in carbon, I just don't like the ones currently available and if I'm going to spend $1000 for all the materials I might as well be happy with it in the end.

    So many ideas. So little time...

    Talk soon Travis
  2. DiabloADV

    DiabloADV Semi-Occasional

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    Oxymoron?
  3. ms-oz

    ms-oz Mike

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    there is no such thing as to much HPN's in the shed.
    reinforced frame, extended dual swigarm with single shock, ultra light, 100% race configuration.
  4. Abey

    Abey Adventurer

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    Amazing thread.:1drink
  5. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    I've never seen one of their bikes with a dual sided swingarm and a single shock. Got any photos of this?

    EDIT: I take that back. Actually, yes I have. Like these?

    [​IMG]

    [​IMG]

    [​IMG]
  6. Rucksta

    Rucksta SS Blowhard

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    Carbon front cover, starter cover and square airbox would be of interest to me.
    HPN already do a front cover for a weight saving of 500gms and a price that doesn't match my budget of
    about $180.00 / kg.
    I'm running out of affordable areas to shave so an adjustment to the funding model may be required.
  7. IronSpadeCycles

    IronSpadeCycles Button Pusher

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    Ruckster, carbon is not cheap. I honestly don't know what the individual pieces would cost but from what I've heard about HPN is you put in your order and you might get your parts a year or so later. And the sad part is they seem to be one of the only games in town. I'm really just feeling it out to see if it would be worth the investment to make the molds for my own set, and then if anyone would be interested in a set of their own. There would be an obvious weight savings but its also a bit of bling factor too. The molds really do cost about 4-5 times what a finished part would cost to develop, so unless I can see selling 5 sets of parts to cover my investment, its a big pill to swallow just for one set of parts. I may start with the airbox and see how it goes, throw a few up on the forum with generous pictures and see if anyone bites.

    Talk soon, Travis
  8. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Keep in mind for the airbox that you'll need to either include some metal washer inserts in the layup or exclude the trans mounting studs from the airbox. I wouldn't want a nut torqued down on a carbon fiber airbox wall holding a transmission on. It'd hold just fine, but would eventually (quickly?) tear up the walls of the airbox.
  9. Desertpistons

    Desertpistons 80s dakar

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    Actually HPN will send you the parts pretty fast. I never had to wait more than 4 weeks. Having them working on a frame it is an entire different matter:D

  10. Desertpistons

    Desertpistons 80s dakar

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    Yes, like the ISDT bikes. Have you seen the recent replicas made in Italy? they rock big time. Uber expesnive but well built.


  11. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    You mean this guy? http://www.evum.it/

    These do look really nice.
  12. Desertpistons

    Desertpistons 80s dakar

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    Yes. I am planning to sell some of my beemers and get one. I absolutely love it.


  13. Desertpistons

    Desertpistons 80s dakar

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    [​IMG]


    for more pics see the link below. I will check on the specs of the material. I got it done 5 years ago and cannot remember XXXX

    http://mauro66.fatcow.com/4strokesd/forsale/forsale.htm
  14. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    What do those mounting points line up with on the frame? Is there a separate clamp that mounts on a frame tube?
  15. Desertpistons

    Desertpistons 80s dakar

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    I have welded two mounts on my bike. The tank is on 2 silent blocks/rubber mounts in the front (mounting points) to absorb any possible vibrations. You may also make 2 removable clamps ala acerbis/hpn tank with 2 rubber mounts. The 4 screws on the top of the tank are for the HPN tool box or any other one you wish to install.
  16. DiabloADV

    DiabloADV Semi-Occasional

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    Izzat tank for sale?
  17. Stagehand

    Stagehand Imperfectionist

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    :eek1:eek1

    Oh my
  18. DiabloADV

    DiabloADV Semi-Occasional

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    There are a lot of reasons to not have the subframe welded to the main...you create stresses you don't need and invite cracks. There is a reason that HPN doesn't do that...Structural Engineering 101.

    Plus -- it's nice to be able to pull a subframe off if it gets bent and straighten or fix it.
  19. Solo Lobo

    Solo Lobo airhead or nothing

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    +1 :ear
  20. Desertpistons

    Desertpistons 80s dakar

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    Right, but back in the 70s most if not all the isdt/enduro bikes were like that...and that is an isdt replica..