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  1. #16
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    But what most people think of when you say BP Merc:

    The tuned stack kit:

    This one belongs to a guy in Australia who is looking for a more correct prop.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	1250bpmerc.r.jpg 
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ID:	39001  

  2. #17
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    Hummanah...hummana.... Boy do I want that motor...and its twin brother

    Gimme...gimme....gimme. and to think I used to take them for granted...... Probably explains why I've been so dreadful at being married too.

    T2x

  3. #18
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    I've seen several BP props on E Bay in the last several years. As a matter of fact I bought one of em brand new for 60. Merc's even got some late style cleaver on the one they display from time to time. Looks like that motor could use some other detailing also. I sho' could make it purdy with a couple of day's work.



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  4. #19
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    And I bought the other BP props

  5. #20
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    Yeah there are a bunch of details wrong on that BP, just like the one Merc displays, duh.


    A 1969 should have the white model designation decals on the top for one. What else? Are the stripes 68 stripes or 70 stripes, they sort of don't look like the ones on the blue picture. If the cowls are 1970 we can forgive the 69 decal missing. If the stripes are 68 stripes..........well, oof, that isn't the right lower unit, is it?


    Even in the picture the paint looks like enamel to me.......sort of icky wet and thick. Mercs look best with the baked on lacquer, thin, hard and sharp! Like a polished black diamond, not wet tar.

    We could probably find clamp handles on the junk pile somewhere between here and Sydney for him, too.

    speedmasterkey
    Last edited by Mark75H; 10-18-2003 at 10:57 PM.

  6. #21
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    BP power flow

    Here is a diagram showing the route the power takes
    getting thru a BP lower unit for forward:

    Start at the top and go down the yellow shaft to the purple shifter dog, then up to the hollow green gear, to the red gear, across all three of the upper 3 gear train and equally down each shaft.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	bppowerflow.jpg 
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ID:	56250  
    Last edited by Mark75H; 03-31-2004 at 11:36 PM.

  7. #22
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    Let's back up a minute

    Here is the path in when in reverse:
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  8. #23
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    In reverse the hollow green gear and red gear are cut
    out of the job of power transmission; they are just along
    for the ride.

    When running in reverse the drive shaft drives the purple
    shifter dog which is now directly meshed with the front (left)
    dark blue gear of the three gear train. Both dark blue gears
    and their shafts now rotate in the same direction as the
    yellow drive shaft.

    Here is what some people have found confusing:
    the red gear remains rigidly attached to the shaft
    with the back (right) dark blue gear of the three gear
    train. It also continues to be engaged with the green gear.
    But since the green gear is hollow, the green gear has
    no effect on the drive shaft - freaky thing is the drive shaft
    and green gear are now turning the opposite directions relative
    to each other.
    Last edited by Mark75H; 03-31-2004 at 11:53 PM.

  9. #24
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    Both of mine are that way too Jim, but I've never seen one with the rubber coupler. Mine have what amounts to a driveshaft extension, although it's fatter in the spline area than the old Bay Machine type that convered short inlines to long.

    While we're on the subject, I sho' do need a first design BP lower (down studs type) to complete a 1250 BP (non Super)



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  10. #25
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    Now Jim............... you know all those nice AOMCI guys that won't allow pricin' on thier website wouldn't have anything overpriced don't you??????



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  11. #26
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    Change at AOMC .... pricing in ads will begin very soon.

    It passed a referendum and was approved by the executive council .... directive to allow pricing in ads was passed to the editors just this week.

  12. #27
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    Y'all ain't April Foolin' again with the AOMCI pricin' thing are you? When I was a member, they were so adamantly opposed to it, and the very mention on the inner sanctum brought a vigorous response. I'm very surprised it got changed if it does.



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  13. #28
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    No foolin on the pricing

  14. #29
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    HeeHee

    You all call? Happy FOOLS DAY .... from the KING.

  15. #30
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    another image

    Here's another image with the upper and lower sections lined up.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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