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Thread: Craft identification

  1. #1
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    Default Craft identification

    Does anyone know what sort of craft this is?Click image for larger version. 

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ID:	5568Click image for larger version. 

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ID:	5569

  2. #2
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    Default Re: Craft identification

    Don't know but the 500 series numbers are usually Swedish
    Keith

  3. #3
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    Default Re: Craft identification

    seen similar craft before, but dont know what it is, all i can say is i would put money on it being almost as old as me, and i was born in 76
    Jon

  4. #4
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    Default Re: Craft identification

    Looks like an early BBV?

  5. #5
    Extremely active > 250 posts! Club Member firth5731's Avatar
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    Default Re: Craft identification

    it is a bbv
    i have the larger 2+2
    that has a honda bike engine and it was sold by a chap called Irving
    infamy ,infamy, they`ve all got it infamy

  6. #6
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    Default Re: Craft identification

    Quote Originally Posted by firth5731 View Post
    it is a bbv
    i have the larger 2+2
    that has a honda bike engine and it was sold by a chap called Irving

    This also has a Honda V4. I am just repairing the tunnel before I rev it up. I have had it up to 10000rpm and the craft still does not lift. Is it in the right gear? I have never seen the gear box left on the engine before. Blades are at about 43 deg.

  7. #7
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    Default Re: Craft identification

    Most bike engine installations run in top gear as this puts the least torque on transmission components. Try top gear and see if it will pull through, if not take it down a gear.

    To be absolutely certain you should check the pulley ratios, and the primary and gearbox ratios of the engine and work out how fast the fan will be turning at max. revs to make sure that the fan blade tip speed doesn't exceed safety/design limits and practical limits dictated by noise.

    Kevin

  8. #8
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    Default Re: Craft identification

    The 2 pullys seem to be the same. I have looked at the spec of the motor bike it cam from ( VFR 400 ) and 1st gear is 3.307 (13/43) 2nd 2.352 (17/40) 3rd 1.875 (16/30) 4th 1.590 (22/35) 5th 1.434 (23/33) and 6th 1.318 (22/29) The primary reduction is 2.117 (34/72). I have been trying to work around that it says the engine is 60hp @ 12500 rpm. The blades are 5Z.

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