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Thread: Oddball engines and prototypes

  1. #2941
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    While on the ongoing & possibly never ending adventure of understanding 2 strokes, I remember the Borgward. Here's a nice read:

    https://wartburg353knight.blogspot.c...roke-fans.html
    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

  2. #2942
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    Quote Originally Posted by ken seeber View Post
    While on the ongoing & possibly never ending adventure of understanding 2 strokes, I remember the Borgward. Here's a nice read:

    https://wartburg353knight.blogspot.c...roke-fans.html
    A very interesting story Ken!
    That Goliath sports car was a beautiful piece of work! Also, why didn't the world take notice of that fuel injected two stroke?
    Fuel injection (as in the Daimler Benz V12 engine ) was obviously successful since before WW2, however hasn't really been seen at all in two strokes till the Skidoo and Outboard guys got it working!
    I know that Orbital (in another form) did get it sussed, BTW what happened to that? - and of course, our own Flettner did it successfully (in yet another form) on his Kawasaki Bighorn - which is still going strong I believe! - If only they (manufacturers) would take more notice of his efforts and experience in developing this and listen to him, it might just have a chance of saving the two stroke for a while!
    Strokers Galore!

  3. #2943
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    I always thought there was something fishy about 4 strokes....here's proof..

    https://www.facebook.com/skillvdo/vi...5716632262283/
    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

  4. #2944
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    Long read but note the bit about the Kawasaki powered race car: https://www.linkedin.com/pulse/busin...z38RavIp2DikaY
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  5. #2945
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    Quote Originally Posted by ken seeber View Post
    I always thought there was something fishy about 4 strokes....here's proof..

    https://www.facebook.com/skillvdo/vi...5716632262283/
    That's a bloody good idea Ken - instant smoked fish - might be better to use some oil from a tree or somewhere though! -at least there will always be some use for a crapped out four stroke, but I thought that it was only supposed to be two strokes that smoked!

    Pete, - Why didn't Kawasaki ever get into car production I wonder?
    Strokers Galore!

  6. #2946
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    4th September 2017 - 10:39
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    Hello everyone.
    I wonder if this already exists?
    I'm not interested in opposite piston engines, just curious
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #2947
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    Quote Originally Posted by ceci View Post
    Hello everyone.
    I wonder if this already exists?
    I'm not interested in opposite piston engines, just curious
    It does seem a little unnecessary, ie when you can have uniflow without the need for "twin piston" type of arrangement. as well. - I've never seen the "twin piston" format used in this way.
    Strokers Galore!

  8. #2948
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    Quote Originally Posted by WilDun View Post
    It does seem a little unnecessary when you can have uniflow without the need for "twin piston" type of arrangement. as well.
    My thoughts exactly. But I seem to remember that Flettners first uniflow engine had more or less the same layout, apart from the master-and-slave con rods.
    Click image for larger version. 

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  9. #2949
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    Quote Originally Posted by Frits Overmars View Post
    My thoughts exactly. But I seem to remember that Flettners first uniflow engine had more or less the same layout, apart from the master-and-slave con rods.
    Click image for larger version. 

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    I never knew that fact! (ie about the Flettner machine). Well I guess that he has moved on a little by now and has eliminated that side street as the best route to progress!
    Strokers Galore!

  10. #2950
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    Thank you all
    I was curious as there are so many new prototypes on the Uniflow topic

    https://hackaday.io/project/10670-op...-diesel-engine

    https://motore-a-pistoni-solidali-du...3.webnode.it/#

  11. #2951
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    Quote Originally Posted by ceci View Post
    Thank you all
    I was curious as there are so many new prototypes on the Uniflow topic

    https://hackaday.io/project/10670-op...-diesel-engine

    https://motore-a-pistoni-solidali-du...3.webnode.it/#
    I think that the (most developed) OP engine on the horizon is the American "Achates" who openly admit that the inspiration for their engine came from the pre WW2 design from Junkers - it's a two stroke (admittedly a diesel) but a lot of research has gone into it and no doubt a lot of dollars!
    I believe that the Cummins Truck empire is now involved with Achates and I don't think that they would be there if it didn't stand some chance of success, some OP engines have already been successful in the past - some prefer only one crank and others two cranks....... there are others (individuals and companies) checking all this out as well!
    Strokers Galore!

  12. #2952
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    Quote Originally Posted by WilDun View Post
    I think that the (most developed) OP engine on the horizon is the American "Achates" who openly admit that the inspiration for their engine came from the pre WW2 design from Junkers - it's a two stroke (admittedly a diesel) but a lot of research has gone into it and no doubt a lot of dollars!
    I believe that the Cummins Truck empire is now involved with Achates and I don't think that they would be there if it didn't stand some chance of success, some OP engines have already been successful in the past - some prefer only one crank and others two cranks....... there are others (individuals and companies) checking all this out as well!
    Cummins should "re-invent" the TS3 and TS4 Rootes engine that they killed off so long ago in favour of their own designs.
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  13. #2953
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    Quote Originally Posted by ceci View Post
    Thank you all
    I was curious as there are so many new prototypes on the Uniflow topic

    https://hackaday.io/project/10670-op...-diesel-engine

    https://motore-a-pistoni-solidali-du...3.webnode.it/#
    The little buggers are everywhere. This one will run on E85. 175cc, single cylinder.
    And yes Frits, my Uniflow engines to date are essentially two split singles head to head, well, heads removed.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  14. #2954
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    Quote Originally Posted by pete376403 View Post
    Cummins should "re-invent" the TS3 and TS4 Rootes engine that they killed off so long ago in favour of their own designs.
    Yes Pete, they should, but will they?

    This world is ruled by the rich and powerful, (which could probably also describe some of Cummins top brass!) - most of them probably have no idea or care whether or not it's a two stroke that is powering their superyacht!
    Last edited by WilDun; 24th June 2020 at 09:14. Reason: polishing up the turds.
    Strokers Galore!

  15. #2955
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    Here's your dream supercharged two stroke.

    http://strangedevelopment.com/

    Lohring Miller

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