'82 centerstand, what's the deal?

Discussion in 'Airheads' started by Bluethumb, Feb 8, 2013.

  1. Bluethumb

    Bluethumb Been here awhile

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    Thanks but I'm pretty well versed in airheads, have 300,000 miles and have owned quite a few. As I mentioned, modified G/S stands to we're when you put you foot on the stand and rolled it back, it rolled right up onto the stand.

    It's this 82 R100. There's no rocking back or rolling back -and up onto the stand. There's something unnatural about it.

    Un-airhead like.

    Seems like there ought to be plenty of folks out there that own this year bike, R100, RT, RS.
    #21
  2. Bluethumb

    Bluethumb Been here awhile

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    Thanks Charles, so it's not me?

    Other year stands fit?

    I'm really liking this bike, but hate every time I go putting it on the stand
    #22
  3. chasbmw

    chasbmw Long timer

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    I don't know about other year stands. Making sure that it locates properly on the stops in the frame is also important because it prevents the stand going over center. This in my case needed some welding to build up the stops. There is a Swiss guy who has a good write up, someone will remember where? Part of the problem is that the top of the stand splays outwards with wear.

    [​IMG]

    [​IMG]
    #23
  4. ME 109

    ME 109 Long timer

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    My 81 will never roll back onto the stand. The bike may not be lifted straight up, but it certainly does need lifting.
    I think that's the point with these problem stands.
    My stand no longer has the little square pad for my foot, so I do miss some of the leverage offered by pushing down on the stand at that point.
    Maybe I should weld another plate on there and use the stand as designed, which would certainly make it easier.
    If I'm fully loaded for touring and deploying the stand on a backwards down hill slope, it is way easier to use.

    At 6'2" the problem is just under the threshold of being a 'must fix' situation.
    #24
  5. R100

    R100 R100 UK

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    I have an '81 R100 that is missing it's center stand, I'm in the process of making new bushes and fittings based on using the original frame brackets and spring plates which are both still present. I'm also thinking of making a stand from scratch to overcome design flaws and the difficulty of putting the bike up on the stand. Not having even seen the stand fitted I'd love to see some photos of how they fit originally (both up and down), also I too would love to know what alternative stands I could use or base mine on as an improvement. Again, I've never even seen a Reynolds stand. Photos please?

    I'll post photos of mine when I've made more progress then hopefully others who are handy could have a go at a repair/improvement.
    #25
  6. boxerboy81

    boxerboy81 Stay Horizontal

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    I have an 11/1981 RS.

    The stand has had repairs, including the grounded area reinforced and the lowering tang is beefier.

    The bushes get changed every coupla years, as do the bolts. I generally keep them greased.

    Had a look before and they're due.

    Previous bikes have had worse stands (all RS's) and the technique described by Disston makes it easier. Not easy mind you, but easier. Friends have had a go at putting a previous RS on the cs, with no success. It's almost an anti-theft feature!
    :D

    http://jhau.maliwi.de/mot/r100tic.html#centerstand

    .
    #26
  7. chasbmw

    chasbmw Long timer

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    these are pictures of Bluethumb's stand, it looks like a 81 on stand. lots of wear on the part that fits onto the frame and the hole looks if it might be a little oval

    [​IMG]

    [​IMG]
    #27
  8. Bluethumb

    Bluethumb Been here awhile

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    Thanks to Charles for posting them.

    The holes are actually good. It's the angle of the camera that makes 'em look oval. Off the frame, the bushing fit inside nicely. The ends do need welding up and regrinding.

    But I sure don't see where there ever was a pad welded to the end as some have described.

    For grins I'm going to take the CS off of my ST and see how it matches up
    #28
  9. chasbmw

    chasbmw Long timer

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    if you take a look at the photos with my post you can see where weld has been used to build up the pad where the stand locates into the frame when it is deployed. Part of the problem with these stands is that only have a single cross tube, which is located low on the stand legs to clear the lower sump and I think the rear balance pipe which was introduced at the same time. This results in the upper part of the stand bowing outwards.
    #29
  10. ME 109

    ME 109 Long timer

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    When I repaired my stand, I welded to increase the width of the stand contact point, from about 5mm to 8mm.
    This assists in slowing the wear of the stand contact point.
    The weld is built up towards the inside of the stand.
    By placing the bike up on 3" blocks of wood, the c/stand can be easily installed and removed to grind the contact points equally.
    The finished grind should have the stand at an angle which is getting close to.....well, falling forward off the stand, but not too close!
    My stand is an excellent bmw ride off stand now, fantastic when fully loaded for touring.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
    #30
  11. Rob Farmer

    Rob Farmer Long timer

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    Charles,

    The early 80's stands I have have had have a pressed steel drop down lever instead of the bar on yours. I thought the bar appeared later. Is yours definitely an early 80's?
    #31
  12. chasbmw

    chasbmw Long timer

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    The stand in the photos is blue thumbs......
    #32
  13. chasbmw

    chasbmw Long timer

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    A cut and paste from airheads list




    I'd run dual-crossover systems on all of my bikes, if the centerstand
    location did not make that so difficult. You can see from BMW's
    struggle with the 1981-84 centerstands that even a team of brilliant
    BMW engineers were somewhat stymied by the problem of raising a 500-lb
    motorcycle with half the lever length that they had before. I've
    probably doodled a hundred ideas for fixing that issue, including
    hydraulic and pneumatic methods. None were viable market-wise.

    The electric centerstand system fitted to the bottom of a K1200LT
    weighs about the same as an R65.


    --
    Tom Cutter
    Yardley, PA
    "Depend on the rabbit's foot if you will, but remember it didn't work
    for the rabbit." -?R. E. Shay
    #33
  14. coppertop

    coppertop occasional meanderthal

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    '82 R100S. Always been a bit of a bastard to get onto the centerstand. It has the stamped steel deployment tang, and the textured, sort-of-square, steel foot placement pad. The stock sidestand became worn enough to be a concern, so I replaced that with a Brown's side stand. I pretty much only use the centerstand when I'm doing maintenance on the bike.
    #34
  15. Bluethumb

    Bluethumb Been here awhile

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    As far as I know that is the stock stand, but that's why I asked Charles to post those pictures for me. The R100 is new to me but everything appears original.
    #35
  16. chasbmw

    chasbmw Long timer

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    I think that the earlier stands have 2 crosspieces, I don't know about post 84 stands.
    #36
  17. kadesean

    kadesean eyesuck

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    #37
  18. ME 109

    ME 109 Long timer

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    Single cross piece on my 81 centre stand.
    #38
  19. Crisis management

    Crisis management Latte riders FTW!

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    Same with my 83 R80 and it's a bastard to get on to the centrestand, I will look at rewelding the stops (mine are worn) but the bushings and pivots are in good order. It is a nasty design and the one thing I dislike about the bike.

    Yet again, lots of good advice here, thanks to all of you! :clap
    #39
  20. Rob Farmer

    Rob Farmer Long timer

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    Hi Blue,

    Just trying to figure out what the 81 machines had as standard. I know my mates worked a treat with the original stand since it was fitted with a new replacement is now so awkward to pull on the stand he doesn't use it any more. Motobins list a different spring for the 81 machines so there must be difference, they don't have any stands though --> http://www.motobins.co.uk/displayfi...subs=158b&title=CENTRE+STAND+PARTS&model=R100

    I gave PYCymru a stand with the tang and the chequered foot and it cured his problems with getting his RS on it's stand.

    I'd love to know what's supposed to go on each year.
    #40