MONO/PARA weights

Discussion in 'Airheads' started by Phreaky Phil, Dec 25, 2012.

  1. Phreaky Phil

    Phreaky Phil Long timer

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    Does anyone have any weight figures of a monolever swingarm and final drive and a paralever swingarm and final drive.
    Which one is lighter ?
    #1
  2. robtg

    robtg Been here awhile

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    Kinda like a 450# marathon runner picking out the lightest running shoes. Does it matter?:D
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  3. Phreaky Phil

    Phreaky Phil Long timer

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    Yep :1drink
    #3
  4. robtg

    robtg Been here awhile

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    Know where your coming from, I also trim the ounces looking for pounds.:freaky
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  5. supershaft

    supershaft because I can

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    I have always wondered the same thing. I am going to be very surprised if the Paralever is lighter. It's definitely a lot longer. Something I don't care for on the road bikes for the longer wheel base reducing cornering clearance. They do have a much larger swing radius which is good. They are like a twin wish bone setup on a car only different as far as the swing radius goes.

    Those ounces do add up into pounds! I sure wish I could afford some lighter wheels for my Mono! IMO, the wheels are THE place to start but man do we have very limited options on that front! As far as mags go that is. I am tempted to go the cross spoke route but man it's some money!
    #5
  6. Phreaky Phil

    Phreaky Phil Long timer

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    Sometimes it's more than ounces. For example GS front wheel is 4.5 kg heavier than my DRZ 400 front wheel.
    #6
  7. Prutser

    Prutser Long timer

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    R80 G/S Final drive 7,6 KG Swing arm with drive shaft 5 KG Wheel (no tire) 6,1
    R100GS Final drive 8,5 KG Swing arm with drive shaft 3,9KG Wheel no tire 6,6
    R1100GS Final drive 8,9KG Swing arm with drive shaft 6,1KG Wheel no tire 6,6 (no disc)

    Just some rough measurements.
    #7
  8. supershaft

    supershaft because I can

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    Well, the Para is some ounces lighter. Where the weight is at might be more important in this case?

    @PP: BMW and some of their heavy wheels!!!!! The old K bike/Mono wheels weight a ton! NOT the place to be adding ounces let alone pounds!
    #8
  9. Phreaky Phil

    Phreaky Phil Long timer

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    Thanks for this, exactly what I was looking for.
    So the G/S Mono =18.7
    GS Para = 19
    1100 GS Para =21.6 plus disc/caliper etc

    I did some measurements when I added the disc to mine and knew I added a couple of kgs.
    An extended mono would back to the same weight as the paralever but capable of more travel and stronger.
    #9
  10. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    I have different numbers for this:

    Rear End Comparison:

    I also got curious about the conversion to the R1100GS rear end and wondered what it would weigh compared to a monolever rear end:

    R1100GS
    final drive 16.7
    paralever rod 1.3
    swingarm 7.8
    drive shaft 5.2
    rear wheel 14.7
    disc 2.0
    caliper 1.8
    shock 10.0

    59.5 lbs total


    R100GS or GSPD
    rear wheel 14.2
    swingarm w/ all bearings, pins, lower boot 6.2
    tie rod 1.0
    driveshaft 4.4
    final drive 17.8
    brake shoes, cam, lever 1.9
    shock 8.4

    53.9 total



    R80ST
    swingarm w/ bearings and pivot pins 7.3 lbs
    driveshaft 3.9
    final drive 16.2
    rear wheel 13.0
    brake pads, cam, lever 1.4
    shock 6.3

    48.1 total




    HP2 just for curiosity's sake
    final drive 17.4
    swingarm 9.6
    paralever tie rod .9
    rear wheel 11.3
    driveshaft 4.8
    rear disc 2.1
    rear caliper 2.1
    shock 4.9 (I find that very hard to believe)

    53.1 lbs total
    #10
  11. Padmei

    Padmei enamoured

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    Hmmmmm Phils swapping out his swingarm... is there a queue for it yet?
    #11
  12. supershaft

    supershaft because I can

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    Of course I don't know for sure but I suspect the weight of the FD is what matters most.
    #12
  13. Phreaky Phil

    Phreaky Phil Long timer

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    Phils just planning at the moment. Having said that I have purchased 2 monolever swingarms off trademe. :evil Just because they were there :thumb
    #13
  14. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    ...and the wheel
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  15. supershaft

    supershaft because I can

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    + 1 Mcmillion! The wheels make ALL the difference in the world! BTDT! Unfortunately only on customer's bikes. :(
    #15
  16. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Just curious, does anyone know roughly what a modern excel rim weighs compared to a 80s Akront rim?
    #16
  17. AntonLargiader

    AntonLargiader Long timer

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    Interesting info. From where did the weights come?

    HP2 has an air shock, that's why it's so light. R11GS, you have to remember that the shock contributes less to the unsprung weight than the others do due to its location.

    The Akront rear rims actually aren't that heavy. I was very surprised. The hub is heavy. I have not disassembled a front so I don't have experience there, but I do have a G/S front hub lying around that I could weigh.
    #17
  18. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Parts fiche.
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  19. Phreaky Phil

    Phreaky Phil Long timer

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    After studying Prutsers bike which he says is 188kg with a tank a ( 19l ) of fuel, I want one like that. :clap
    Take away the fuel it makes it 175kg ready to go with empty tank. Thats only 10 kgs heavier than my DR650 and the C.O.G would be lower on the Airhead.

    So, can an R80GS be stripped of enough weight to make it the same. In theory the engine and main frame should weigh the same.
    #19
  20. Phreaky Phil

    Phreaky Phil Long timer

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    GS fairing/ speedo etc 8.7kg. (weighed)
    Collecter box 3.6 kg
    standard muffler 3.7kg
    staintune muffler 3.4kg
    crash bars 1.3kg (pair)
    #20