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Thread: Columbian L6 JB three blade bronze cleaver

  1. #41
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    Quote Originally Posted by Fastjeff57 View Post
    How did you add more rake? Weld on the blades?

    Curious.

    Jeff (home made props maker)
    Well... I gradually added pitch along outer half of the blade. This is not a typical racing cleaver, its more like a "Mickey Mouse" fishing motor bronze prop from the 60's but with straight, cupped trailing edges. Blade profile is "twisted" in such a way that pitch was decreasing towards trailing edge and towards the tips. I'll take some photos to make it more clear.

    Phill, pinion bearing disintegraded and broke the casing at the end of the video. I think that gears and prop shaft are still salvageable.

  2. #42
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    That is bad news.
    I am not sure you will find a spare case for that easy nowdays. Maybe a later gearbox is going to be needed to join up.
    Chrysler were very weak on the drive train. Maybe this engine was not looked after 100% before you got it.
    Hope you get it sorted out because you were enjoying the boat.

  3. #43
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    Quote Originally Posted by filthy phill View Post
    That is bad news.
    I am not sure you will find a spare case for that easy nowdays. Maybe a later gearbox is going to be needed to join up.
    Chrysler were very weak on the drive train. Maybe this engine was not looked after 100% before you got it.
    Hope you get it sorted out because you were enjoying the boat.
    No problem, I still have 2 or 3 lower units as spare parts. I'm pretty sure that oil seal under water pump failed -> water in/oil out -> bang! Yes, I have water pick up tube at the transom and there is only one seal under the pump...

  4. #44
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    oh that is good you have spare parts for the motor.
    it runs realy nice.
    years ago when Chrysler were selling outboards in the uk the only problem they realy had was breaking main drive shafts, parts were never easy to get even back in the 1970's in the uk.

    your motor sounds nice, hope you get back on the water very soon...

  5. #45
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    Quote Originally Posted by paavojaelvis View Post
    Well... I gradually added pitch along outer half of the blade. This is not a typical racing cleaver, its more like a "Mickey Mouse" fishing motor bronze prop from the 60's but with straight, cupped trailing edges. Blade profile is "twisted" in such a way that pitch was decreasing towards trailing edge and towards the tips. I'll take some photos to make it more clear.
    Here are some pics. Rake angle was zero before mod.
    Attached Images Attached Images    

  6. #46
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    You do nice work! What type of welding did you use?

    Jeff
    "We live at the bottom of an ocean of air." - General Marvage Slatington

  7. #47
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    No welding, needed only a small hammer and lots of patience...
    Attached Images Attached Images  

  8. #48
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    Looks like you have put it back to what it would of originaly been like.
    the rake is the same, rake angle is determined at the hub, look at the last picture the tip of the trailing edge should infact be up a touch more to be like what it would of when new.

    being a manganese bronze prop ( brass), the prop has probably be bent many times in its life. Unlike alloy props the brass gives a bit more without cracking.
    I bet that prop could have some real history to it.

    its definitely in good hands now, time to get polishing and make it look like new, its definitely a keep prop for sure.

    good work done by you too to get it back to looking right.

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