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Thread: BMW K100 Revs... and bearing grease

  1. #1
    Forum God > 400 posts Club Member
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    Default BMW K100 Revs... and bearing grease

    I think I will open my own forum.....

    Can someone please tell me the ideal revs I should set my engine too now I have a working tacho?

    I remember Keith saying way back in November last year that...
    /quote
    according to BMW max hp is at 8750rpm and for continous safe cruising (on the bike) a max of 8450 is recommended...not bad eh!!
    \quote
    But I seem to remember someone saying use 5000rpm....

    Confused.....

    Can someone also please tell me what grease I should use for the bearing blocks in my Osprey?

    Thank you my learned friends......

    B.

  2. #2
    More than 30 posts! Scrutineer
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    Default Re: BMW K100 Revs... and bearing grease

    Hi again,

    What I said was correct, however we set up all our craft to have a maximum static rrpm of 7500, it ends up a little higher when moving.

    The power curve is so flat at the top end by running at 7500 you still get 80 - 85hp, more than enough if the craft is well designed and set up correctly,. running at a lower rpm reduces noise and increases engine life.

    When the Vortex 4+ is up and cruising, with 4 people on board in good conditions we would be running at about 5000 to 5500, (approx 55-60hp)

    As for grease I don't know what type of bearings you are using, our lower bearing blocks run in oil.

    Cheers

    Keith

  3. #3
    Forum God > 400 posts Club Member
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    Default Re: BMW K100 Revs... and bearing grease

    Thank you Keith, as always very helpful!

    As for the greese, The setup I have has greese nipples on it so I assume it needs greese?

    I will have a chat with JS as he built the frame for me.

    Be good,

    B.

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