Para-curious

Discussion in 'Airheads' started by Airhead Wrangler, Nov 2, 2012.

  1. Houseoffubar

    Houseoffubar HoFmetalworks.com

    Joined:
    Dec 4, 2010
    Oddometer:
    1,884
    Location:
    Bothell, Washington
    Why not just make the dampening heavier on ten?
    #41
  2. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    "No, no, you don't understand... ours go to 11. That's... one more."

    I just talked to racetech today and they finished the rebuild, but they did not change out the heim joints as they didn't have the size in stock. Does anyone know what size these use by chance so I can order them and have them shipped down? Anyone know a shop that stocks lots of old WP parts??
    #42
  3. Houseoffubar

    Houseoffubar HoFmetalworks.com

    Joined:
    Dec 4, 2010
    Oddometer:
    1,884
    Location:
    Bothell, Washington
    Where do you go when the road get really really rough???? 11 that's where! This one goes to 11! :D

    Glad to see you have a bike to explore on, I know it was eating you up to be without your machine! This should help the days go by peacefully. :clap
    #43
  4. blaine.hale

    blaine.hale Long timer

    Joined:
    Feb 28, 2009
    Oddometer:
    3,971
    Location:
    Atlanta, Ga
    You gotta think that someone at that company has seen that mocumentary and intentionally did that. There's just no other practical reasoning for it.
    #44
  5. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    Compression damping only goes up to 7. 7-11, maybe a craps thing? Donno.

    Whatever the case, anyone know where I can get my heim joints?
    #45
  6. Stagehand

    Stagehand Imperfectionist

    Joined:
    Oct 6, 2004
    Oddometer:
    32,646
    Location:
    Shawangunks
    I might regret this but... Whats a heim joint?
    #46
  7. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    AKA: rose joint, spherical bearing, rod end bearing, etc. They're the pivot bearings at both ends of your shock. Most dirtbikes use one on the top of the shock and the other is in the swingarm or linkage, not the shock itself. You don't see them though as they have spacers and seals covering them up.

    [​IMG]
    #47
  8. Velocipede

    Velocipede Been here awhile

    Joined:
    Mar 9, 2006
    Oddometer:
    508
    Location:
    Kingston Ontario Canada
    I'm sure glad you asked that SH.In all my years on bikes I've never heard of it.Thanks for the explanation AW.

    John
    #48
  9. Houseoffubar

    Houseoffubar HoFmetalworks.com

    Joined:
    Dec 4, 2010
    Oddometer:
    1,884
    Location:
    Bothell, Washington
    Heim joints....have you tried McMaster Carr.com?
    #49
  10. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    No dice. KTM bought WP and now WP USA has the attitude that if it's not on a KTM then they don't give a shit.
    #50
  11. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    They only had SAE bearings, no metric. This is quite an oddball size. According to Prutser, it needs to be 25mmOD x 15.1mmID x 13mm thick. He's got a source for them from WP Holland, but even they are out of them right now.
    #51
  12. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    [​IMG]

    I did a little more digging this afternoon. I opened up the carbs for a checkup and found the idle jets plugged solid with crud. It seems that the PO tuned the bike to idle just fine without even using the idle circuit. :huh Weird, cuz the thing runs just fine. It does start up VERY easily with no choke though, so I knew something wasn't quite right. Jetting was stock and the carbs appear to have not been messed with at all. I also ripped out all the pulse air crap and found the old air filter had holes all over in it, but the airbox was perfectly clean despite this. Good thing I ordered a new filter.

    [​IMG]


    [​IMG]


    Only about a quarter of the holes are visible from this particular angle. The ignition wires are dried out and cracked, so they're getting replaced before they start shorting to the heads.

    [​IMG]

    I also found that the bosch plugs in the bike now are two heat ranges colder than standard for the bike. Not necessarily a bad thing given my climate here, but I have a pair of stock heat range plugs on the way as well. I also bought new fuel line, but didn't get around to installing it yet. I'm chipping away at all the little stuff bit by bit.
    #52
  13. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    ...and a new project begins. :evil

    [​IMG]

    [​IMG]

    Just to dispell another internet myth: An R1100GS swingarm is neither 20mm narrower than nor the same width as a R100GS swingarm. I've heard mention of both being the case. I couldn't get a super-precise width on the R100GS swingarm, but it's just about exactly 10mm wider. An 1100 swingarm is 254mm wide.
    #53
  14. Ras Thurlo

    Ras Thurlo Desert Lion

    Joined:
    Aug 5, 2010
    Oddometer:
    832
    Location:
    Hillcountry, Italy
    does anyone know the relative lengths of the R100, R1100, R1150 swing arms?

    what mods do HPN do for their paralever swing arm, is it in effects a reinforced R1100 arm?


    looks to me that they are using an airhead para bevel box:


    [​IMG][/URL][/IMG]
    #54
  15. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    The R1100 is 355mm pivot to pivot, the R1150 341mm. I don't have an exact measurement on the R100 arm, but it's roughly 75mm shorter than the R1100 arm. The lateral position of the paralever pivots in relation to the swingarm pivots also differs between the 1100 and 100 arms by about a cm also. Somebody else sketched this up:

    [​IMG]

    It's not a modified swingarm. They build it from scratch by welding AlMgSi1 (aka 6082) aluminum tube and machined pieces rather than using a casting. It's the same length as an R1100 arm, alledgedly much stronger, and also leaves plenty of space to use an 18" wheel without rubbing on the shock mount which is a problem with the R1100 arm. The end of the arm uses a machined ring that the paralever pivot pins thread into. The rest of the arm is composed of welded tube and plate.

    [​IMG]

    [​IMG]

    [​IMG]

    This arm (maybe modified a bit) was also used on their R900RR Dakar race bikes:

    [​IMG]

    Yep.
    #55
  16. Ras Thurlo

    Ras Thurlo Desert Lion

    Joined:
    Aug 5, 2010
    Oddometer:
    832
    Location:
    Hillcountry, Italy
    so approx measurements are: (?)

    G/S mono: 0
    r100 Para: +5cm
    HPN mono: +10cm
    R1150: +11cm
    R1100: +12.5cm


    Do you know approx price of this HPN SA+ associated sub-frame/shock tower?


    [​IMG]
    #56
  17. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    7,034
    Location:
    Back in Seattle, FINALLY
    Hmmm. Not sure. Keep in mind that the measurements I gave you for the paralever type arms are from the swingarm pivots to the paralever pivots (not center of rear axle). The effective swingarm length (swingarm pivot to axle center) changes through the suspension stroke, so it's a bit tough to compare directly to a monolever where this doesn't happen.
    Off the top of my head, no. They list the prices for the modifications to the main frame and for the shock mount subframe in their price list. They do NOT list the price for their swingarm or their machined rear hub which tells me they must be pretty spendy items.
    #57
  18. Ras Thurlo

    Ras Thurlo Desert Lion

    Joined:
    Aug 5, 2010
    Oddometer:
    832
    Location:
    Hillcountry, Italy
    had looked it up and could not find it. I fear you are right.

    they look sweet

    is there history of people breaking these 1100 swing arms that would justify the reinforcement?
    #58
  19. Ras Thurlo

    Ras Thurlo Desert Lion

    Joined:
    Aug 5, 2010
    Oddometer:
    832
    Location:
    Hillcountry, Italy
    what are you thinking in terms of shock set up? going vertical or diagonal?

    if you are going for an airhead bevel box, can you mount the shock in standard 100GS mounting points - but with a monster long shock?


    [​IMG][/URL][/IMG]
    #59
  20. Prutser

    Prutser Long timer

    Joined:
    Aug 5, 2012
    Oddometer:
    1,622
    Location:
    The Dutch swamp
    Last weekend some German HPN owner told me they charge €3000 for there swing arm.
    He also told me that with the 1100 or 1150 swing 250mm wheel travel was the max. But if you would like to have more you would have to use there swing arm.
    #60