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    gs1100 max rpm

    ok Im board,its -10 degrees in massachusetts.I was just thinking what limits the max rpm on my 83 gs 1100 to 8500rpm ? Is the stock cam profile/valve spring arrangement the limiting factor? And if so,what is the max safe rpm for the crank with top end profile cams in these engines.

    #2
    I had my 80 1100e to 10,000rpm's or so way past the red line with no problems. Sure miss that bike. Not really sure how safe it was though.

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      #3
      One time at the track I kick it into a lower gear by mistake and the tach went above 12K. Now I have a rpm limiter set at 9200.
      1166cc 1/8 ET 6.09@111.88
      1166cc on NOS, 1/8 ET 5.70@122.85
      1395cc 1/8 ET 6.0051@114.39
      1395cc on NOS, 1/8 ET 5.71@113.98 "With a broken wrist pin too"
      01 Sporty 1/8 ET 7.70@92.28, 1/4 ET 12.03@111.82

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        #4
        At about 8.500 rpm (and full throttle) the second gear "flopped out? on my GS1150 -84 and the needle went far beyond 11.000 rpm.

        The engine-sound told my ears that this is the probably end, but the engine ran fine after that little disturbance.......

        So I would say that our engines could stand more than the spec. 9.000 rpm.

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