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Thread: Locating the rear wheel

  1. #21
    Join Date
    Feb 2004
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    Cranbrook, BC Canada
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    The rear caliper is fixed in position by the caliper mount and doesn't float on pins like front ones. The wheels position is thus determined by the spacers which appear to be correct (ignore my previous post about them being wrong). It looks like the caliper mount has an offset and is positioning the caliper too far to the left. Is it possible the caliper mount somehow got reversed?
    '84 GS750EF (Oct 2015 BOM) '79 GS1000N (June 2007 BOM) My Flickr site http://www.flickr.com/photos/soates50/

  2. #22
    Join Date
    Mar 2016
    Location
    Denver, CO
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    71

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    The caliper mount only fits one way- it has a curve to it, and the curve needs to extend outwards from the axle in order to fit the caliper holes. Flipping it would put the caliper even closer to the wheel.
    If you're gonna do wrong, do wrong right.

    1980 GS1000E

  3. #23
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    Feb 2004
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    Cranbrook, BC Canada
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    OK. I took some pictures of my GS1000. Note that the axle, wheel and all spacers except for the one between the caliper and the wheel are all the same part number as yours. Comparing your pics and mine it looks like the sprocket side spacer is correct but I question the spacer on the right between caliper mount and the wheel. Mine seems to sit recessed into the wheel much farther than yours. If that spacer on yours isn't correct the spacing for the caliper won't be correct. That spacer and the sprocket side spacer should fit right up against the inner bearing races on both sides. As mentioned the caliper position is fixed and the wheel position in relation to the caliper is determined by the spacers on the left side. This is all assuming the bearings are properly seated which they should be unless you've also had them out. Hope this helps.




    by soates50, on Flickr
    '84 GS750EF (Oct 2015 BOM) '79 GS1000N (June 2007 BOM) My Flickr site http://www.flickr.com/photos/soates50/

  4. #24
    Join Date
    Mar 2016
    Location
    Denver, CO
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    Thanks for the pictures- unfortunately that's *exactly* how I have mine setup right now, and the rotor still drags.

    It looks like I need some additional spacer inside the caliper V mount, to move the caliper out about 2mm. There's no other way I can see to adjust that.
    If you're gonna do wrong, do wrong right.

    1980 GS1000E

  5. #25
    Join Date
    Jun 2015
    Location
    Washington DC
    Posts
    484

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    This happened when I reinstalled the rear wheel on my 750. Can't remember if it was after doing tires or the 530 conversion. I'm racking my brain to remember how I fixed it, but I know I didn't add any spacers.

    I'm gonna look thru some pics I took and see it that jogs my memory. If not, I hope looking at the actual bike this weekend will help me remember.
    Jordan

    1977 GS750
    My first bike!

  6. #26
    Join Date
    Jan 2013
    Location
    Langley, BC
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    1,285

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    I had the same issue on my GS1000, turned out to be a sticking caliper piston, it would not return after being applied and caused the wheel to not want to turn freely.

    I was changing wheels from one bike to another when it happened, but thought it was something I caused so took a while to figure it out.

    Try it without brake pads and see if the rotor is running true in the center of the caliper.

    David
    2013 DR 650 Grey, 1981 GS 650E Silver,
    1980 GS1000ST Blue & White, X2

    2012 DL650 Vstrom Foxy Orange, Daily Ride
    1981 CT110 "Postie Bike" Gone to a New Home.
    2002 BMW 1150 GS Blue & White - Sold
    1975 BMW R90/6 Black - Sold 1984 GS1150EF Sold
    1982 BMW R100 Africa trip, Stolen - Recovered- Sold
    1977-1980 Suzuki GS550, GS750's GS1000, GS1000E, GS 1000S GSX750, GSX1100, etc, Racing Years
    Hondas ST90, CR125 CB175 , CB350 CB750, NSU Quickly, Yamaha RD's 350/400,

  7. #27
    Join Date
    Mar 2016
    Location
    Toronto Ontario
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    897

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    yes remove the caliper and tighten wheel
    bottom out pistons into caliper
    re install then depres pedal till thhey seat
    1983 GS 550 LD
    2009 BMW K1300s

  8. #28
    Join Date
    Mar 2016
    Location
    Denver, CO
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    71

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    The pistons don't appear to be the problem either. I pushed them open manually, but the rotor is still grabbing the caliper itself, not the pads. I've uploaded a video so you can see/hear it: https://www.youtube.com/watch?v=b4ZFyyYva3I
    If you're gonna do wrong, do wrong right.

    1980 GS1000E

  9. #29
    Join Date
    May 2012
    Location
    Youngstown,Ohio
    Posts
    1,810

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    Maybe your wheel bearings and inter spacer are bad. I'd take everything apart and inspect. Something don't look right...
    My Motorcycles:
    82 1100e Drag Bike (needs race engine)
    81 1100e Street Bike (with race engine)
    79 1000e (all original)
    82 850g (all original)
    95 BMW R1100rsl
    82 750e (needs restored)
    80 KZ650f (needs restored)

  10. #30
    Join Date
    Feb 2004
    Location
    Cranbrook, BC Canada
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    4,978

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    Quote Originally Posted by storm 64 View Post
    Maybe your wheel bearings and inter spacer are bad. I'd take everything apart and inspect. Something don't look right...
    Yes, I second what Norm said because if things are assembled in the correct order it should fit properly (famous last words). The caliper is in a fixed position on the caliper mount and the wheel location is set by the spacers so there is no adjustment anywhere it simply should fit if all parts are assembled correctly. I appreciate your frustration with this. Maybe somebody with an 1100 can measure from the inside of the chain adjuster to the brake rotor or wheel, I can measure my 1000 as it has the same parts but an actual measurement from an 1100 would be more comforting.
    '84 GS750EF (Oct 2015 BOM) '79 GS1000N (June 2007 BOM) My Flickr site http://www.flickr.com/photos/soates50/

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