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Thread: ESE's works engine tuner

  1. #32086
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    Quote Originally Posted by lodgernz View Post
    Rob I understand the plate between the cases was necessary on the first 110 so you could fit a 6-speed box, but why do you need it for the CVT version?
    I wondered about that too. I am not so concerned about the crankcase volume, but more about the distance between the crankshaft main bearings, which will cause a large bending moment on the big end pin.

  2. #32087
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    Quote Originally Posted by lodgernz View Post
    Rob I understand the plate between the cases was necessary on the first 110 so you could fit a 6-speed box, but why do you need it for the CVT version?
    The 12mm plate acts as the backbone. Everything mounts off it and it also forms the engine mounting points in the frame.

    Click image for larger version. 

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    Quote Originally Posted by Frits Overmars View Post
    I wondered about that too. I am not so concerned about the crankcase volume, but more about the distance between the crankshaft main bearings, which will cause a large bending moment on the big end pin.
    True about the bending moment on the big end pin, but the pin will be the same as the first unit that has run successfully.


  3. #32088
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    Quote Originally Posted by Frits Overmars View Post
    The Kawa 750H2 had its three 250cc cylinders crowded closely together. There was no room for nicely sweeping transfer ducts; the ducts were flat without inner curvatures, so the incoming transfer streams had hardly any directional stability; the smallest bit of suction from the exhaust side could persuade them to short-circuit.
    Wasn't just the three cylinders, seems Kawasaki preferred that type of transfer design through out. My 350 has nasty little transfer ducts, short sharp and square, probably just lucky the chamber is too shit to create a decent suction. Thought a few times about casting up a new barrel, can't be bothered, put my resources into the new engine, better spent time I believe.

  4. #32089
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    Quote Originally Posted by TZ350 View Post
    True about the bending moment on the big end pin, but the pin will be the same as the first unit that has run successfully.
    How about machining some bearing carrier housings that press (or weld or screw) into the cases and put the bearings out by the crank webs. Will reduce case volume slightly too!

    cheers, Daryl

  5. #32090
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    or just mill 12mm from the crankcase (6mm from each crankcase half ?), or as much as possible ?

  6. #32091
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    .
    There will be no need. This arrangement with a slightly larger diameter pin for the RD400 rod and 12mm longer to move the crank webs further apart has worked successfully before.

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  7. #32092
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    Click image for larger version. 

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    Not always the safest but it gets the job done.


  8. #32093
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    Click image for larger version. 

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    Some general pictures of how the CVT is going to be mounted in the frame. All trendy with a stacked motor/gearbox configuration.

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  9. #32094
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    Quote Originally Posted by TZ350 View Post
    Click image for larger version. 

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    Not always the safest but it gets the job done.
    Way Safer than a 9" angle grinder.

    And its a pretty impressive job your doing.

    cheers, Daryl.

  10. #32095
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    Quote Originally Posted by TZ350 View Post

    Not always the safest but it gets the job done.
    I prefer a bandsaw. Bit more control.

    I wonder sometimes if anyone at Honda is looking at what is being done with these frames. And what the reaction is...
    I know Rex McCandless was quite proud that his Featherbed design took on a life of it's own with all types of engine fitted.
    Reason is a tool - remember where you left it..... The late, great, John Clarke

  11. #32096
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    Quote Originally Posted by Grumph View Post
    I prefer a bandsaw. Bit more control.

    I wonder sometimes if anyone at Honda is looking at what is being done with these frames. And what the reaction is...
    I know Rex McCandless was quite proud that his Featherbed design took on a life of it's own with all types of engine fitted.
    Went to the Assen TT with 2 of my twin spar bikes, designed with my schoolbooks. Found a bunch of Japanese under it. Had a good conversation with the mechanic of Armstrong Rotax at another race. They did it in carbon. Everybody goes independent in the same direction at the same time.

  12. #32097
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    Quote Originally Posted by Carel H View Post
    Went to the Assen TT with 2 of my twin spar bikes, designed with my schoolbooks. Found a bunch of Japanese under it. Had a good conversation with the mechanic of Armstrong Rotax at another race. They did it in carbon. Everybody goes independent in the same direction at the same time.
    Aha, it suddenly dawns on me who Carel H might be! Carel, why don't you show us some pics of your homebuilt bikes and engines?

  13. #32098
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    pulse jet engines

    I believe somewhere on this thread here was a brief discussion about pulse jet engines. A collector in the US is auctioning off his model airplane engine and pulse jet engine collection. If anyone in interested please let me know and I will share the address. It loooks like there are about 20 pulse jet engines in the collection.

  14. #32099
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    Quote Originally Posted by Frits Overmars View Post
    Aha, it suddenly dawns on me who Carel H might be! Carel, why don't you show us some pics of your homebuilt bikes and engines?
    Yes, please do, we love to see pictures of other peoples projects.......


  15. #32100
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    12th March 2010 - 16:56
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    https://youtu.be/bhKrRlZxomc

    So, what if the opening gib was controlled by the rider, and the shut side gib was controlled by the ECU. I can do that with the LINK now, A question or a statement. I'm guessing someone will have some thoughts. I'll leave it set up as it is for the moment but want some ECU throttle input eventually. Too hard to do both at the moment for LINK.
    A box of interesting fuel injection stuff arrived at my back door a few days ago, thanks TZ, just the piece I was looling for😆.
    New replacement ceramic tip temp sensor has turned up for the foundry so back into casting again. Mold up some cylinders this weekend.

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