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  1. Replies
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    I dont want to add to your anxiety but you might consider looking at the thrust rod..

    This is kind of a long shot Ken but since you did some clutch work recently, you had the transmission out and you may have a broken thrust rod. I've seen a couple over the years and one recently on...
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    Careful where you clamp the ground.

    If your welder clamps the negative somewhere like the rear axle (because its a paint free surface for a good ground), transmission, wheel and final drive bearing balls, rollers and races can be...
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    PN 63 12 1 356 279 probably became PN 63 12 1 356 537

    My 1977 BMW SnabbKatalog indicates number 63 12 1 356 279 was originally for a /5 Halogen conversion reflector. The 279 number has been discontinued from factory literature but likely just superseded...
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    Just forget about it... Cycleman2 is correct.

    Those tabs were used by the factory as an assembly jig to help align the muffler / foot peg brackets during the
    construction of the frame. They serve a dual purpose in that they are broken when the...
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    Some experience to share...

    In the past, I've had good luck using a pair of needle nose pliers with the jaw tips held firmly in the notch on either side of the ID. Every so often I run across 'threaded rings' that are stuck...
  6. Thread: work stands

    by Na Cl K9
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    2,172

    Wood Work Stand from the MOA News years ago...

    It took me a while to find the drawing I made. This seemed like a good idea 20 years ago but now the cost of the materials might be an issue. Lash the front or rear wheel down and move the opposite...
  7. Thread: ISDT Airhead

    by Na Cl K9
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    1,975

    Interesting interpretation...Beautiful bike but not competition oriented

    Most BMW 6-day machines and off road airheads in general from both factory and privateer efforts use dirt style foot pegs. The rubber street style become treacherous slippery when wet and muddy....
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    There is a small Phillips oval head sheet metal...

    There is a small Phillips oval head sheet metal screw that holds the connector to the back of the instrument housing. Check to see it is still there and if its still in place, tighten it up if you...
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    ...and by adjusting one sensor or the other...

    ...and by adjusting one sensor or the other during set up both coils can be made to fire together - and, the double dot in the timing window will go away.
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    2 airheads using Dyna

    The 75 R90/6 motor in my sidecar has had a Dyna in operation for 7 years now. I have one in operation in a dual plugged 1977 R100RS that was working fine when I got the bike 5 years ago and is...
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    What he said....

    This is correct. If they will not stay in place try cleaning the fairing where the boots attach to remove wax and grease / oil. Clean the rubber channel if necessary with alcohol and roll the boot...
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    In the case of the exhaust, we use the term...

    In the case of the exhaust, we use the term "Belch-fire" because that's typically what happens...

    It ran better?

    There was no real way to mechanically validate that perception though. I would...
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    For the same money, you could put together a much...

    For the same money, you could put together a much more satisfying old-school airhead ride than the R50/5. The 500's were 'slugs' compared to just about any other two wheeled conveyance out there at...
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    Thats why I asked...

    My experience with oil filters for BMW airheads goes back to the first /5's in 1969. Before that there were none. Most, if not all factory recommended filters now days have the integrated rubber...
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    how far back?

    Do they have rubber O-rings integrated into the filter body?
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    Appropriate maintenance suggestion...

    An excellent time in fact.
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    there is a difference somewhere....

    46511240461 - R75/6

    46511240462 -early R65

    46512301717. -later R65

    based solely on the numbers from the parts catalog, I'd say no...
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    Leave them out...

    Those were called 'anti-bottoming' springs back in the 70's. First ones I installed using directions from an article in the MOA Owners News were originally from a Yamaha DT100 enduro and that was...
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    Timing chain helpful suggestion No. 11

    Here is an idea that provides a more or less fool-proof means of keeping track of the timing chain cover bolts on airhead engines. It helps keep all the original fasteners in proper relationship to...
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    Last year for the 750, the R75/7 numbered about 2500 for US.

    My first new BMW was a 1977 R75/7 in Bronco Metallic with gold pin stripes. 6120884 US production. The 750/7 is exactly the same motorcycle as the 1977 R100/7 except for the displacement and final...
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    Rods...I know what the rattle was- now you do too.

    Toss the rods. With that much damage, I'd expect the big end to be oval and the threads to be stretched beyond salvage. Get some used ones with good original bearing shells so you know they have NOT...
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    Nope - a hot glue gun.

    Nope - a hot glue gun.
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    Frame checks out...good news.

    I took the frame to someone with considerable experience with frames for BMW's and one who has also seen a lot of bent frames having been a dealer for many years previously. He checked it over...
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    The frame is from a 77 R100RS and is unique in...

    The frame is from a 77 R100RS and is unique in that regard. A good replacement frame with paper is a couple hundred but destroys the authenticity which happens now and then...I can get a 77 factory...
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    What your thinking of making is a 'Scrambler' type bike...

    Look around for one of the early G/S oil pans with the small bash-plate. That will be a good place to start making your bike suitable for a modest amount of off-pavement adventure riding. Aggressive...
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