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Thread: the clean two-stroke thread

  1. #121
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    A pair of cases just cast. I cheated, I took the molds to a foundry in town and got them to just pour them for me. I've run out of E85 for my furnace. I have some more fuel turning up next, old, car race fuel, that will do me.
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  2. #122
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    Ceci, there is no other scheme, only that one. I can add a translation, but I think everything is clear form scheme.

    Flettner, there is no any explanation about spherical sealing rings construction.
    Add simpler working example, with piston reed type and head reed type engine. Reed type piston test, shows poor organization and direction of the fresh charge flow in the working space of the engine cylinder. Surprisingly, steel reed petals not overheat, because of fresh mix flow.
    And another complicated type, with exhaust in head.

    WilDun, this red is breathable, even now, as I remember this red liquid, I immediately feel dizzy.
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  3. #123
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    Quote Originally Posted by katinas View Post
    Ceci, there is no other scheme, only that one. I can add a translation, but I think everything is clear form scheme.
    Thanks Katinas , you don't need to translate the text, the outline is already vastly explicit

  4. #124
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    Quote Originally Posted by Flettner View Post
    A pair of cases just cast. I cheated, I took the molds to a foundry in town and got them to just pour them for me. I've run out of E85 for my furnace. I have some more fuel turning up next, old, car race fuel, that will do me.
    Looks good. So we are looking at the base parts for an OP engine with F-TPI, Variable Rotary inlet valve, good control over exhaust and scavening flows and maybe an RPM range with potential HCCI..Well, is that not a good base for a clean efficient two stroker..!?
    Some good exhaust after treatment solutions from the experts from that side and you have a good concept there, very good I think..And from there on some tweeking with space optimization.

  5. #125
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    22nd November 2013 - 16:32
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    So much fun so long ago.
    Wasn't 25 cars, it was 100.

    https://www.whichcar.com.au/features...never-took-off

    One positive fall out from the programme was that there were 100 brand new engines and gearboxes stored away on pallets. Shortly after, there were only 99. Still got it.

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    Now, back to 2 strokes.
    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

  6. #126
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    22nd November 2013 - 16:32
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    Quote Originally Posted by katinas View Post

    Surprisingly, steel reed petals not overheat, because of fresh mix flow. .
    Katinas, lots of amazing stuff. Just confirms yet again, whatever you think of, someone almost certainly has done it before.

    Have to agree with you on reed petals not overheating, but have to admit only with limited running.

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    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

  7. #127
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    20th January 2010 - 14:41
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    Quote Originally Posted by ken seeber View Post
    Katinas, lots of amazing stuff. Just confirms yet again, whatever you think of, someone almost certainly has done it before.

    Have to agree with you on reed petals not overheating, but have to admit only with limited running.

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    Some pulse jets used Reeds. I am pretty sure the operating temp will be lower than a pulse jet. Although the intake air as well wil cool these too.
    although they original ones only needed to run long enough to go from France across the channel.
    here is some ocker.
    punching.......................................... .................................................. ................................. Electrochemical etching
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  8. #128
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    [QUOTE=husaberg;1131167512]Some pulse jets used Reeds. I am pretty sure the operating temp will be lower than a pulse jet. Although the intake air as well wil cool these too............................
    Electrochemical etching/QUOTE]

    Think that guy demonstrating how to make reeds is a (pretty feisty) Kiwi from Tokoroa! - well up in the model aircraft scene!

    Ken,
    I am interested in seeing how your scheme works and I don't think that the reeds will overheat but could they possibly hit the piston at certain revs?

    Guess you won't be giving back the "lost" property you found anytime soon? -
    Strokers Galore!

  9. #129
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    22nd November 2013 - 16:32
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    Hoosa,
    Dunno whether old mate is a kiwi or an ozzie (well, he had the right Tee shirt), but it was pretty good info. Especially so as my mate, who does the wire cutting, finishes up at the end of Nov. Thank you C19. Just a bit of Saxa salt, a 12V charger, cuppla light bulbs and 20 hours and you're done. Cheers for that one.
    Wil,
    We have this thing in Oz called the "statute of limitations" where paperwork, tax receipts etc don't have to be withheld for longer than 7 years = safe.
    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

  10. #130
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    12th March 2010 - 16:56
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    Katinas,
    My intetest is spherical seals. I did purchase some cast iron to make a housing but this project is way down the line.
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  11. #131
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    Quote Originally Posted by WilDun View Post
    Quote Originally Posted by husaberg View Post
    Some pulse jets used Reeds. I am pretty sure the operating temp will be lower than a pulse jet. Although the intake air as well will cool these too............................
    Electrochemical etching
    Think that guy demonstrating how to make reeds is a (pretty feisty) Kiwi from Tokoroa! - well up in the model aircraft scene!
    Quote Originally Posted by ken seeber View Post
    Hoosa,
    Dunno whether old mate is a kiwi or an ozzie (well, he had the right Tee shirt), but it was pretty good info. Especially so as my mate, who does the wire cutting, finishes up at the end of Nov. Thank you C19. Just a bit of Saxa salt, a 12V charger, cuppla light bulbs and 20 hours and you're done. Cheers for that one.

    first guy is the ocker second one sounds like he's a Kiwi.
    It seem like a pretty good way to cut fiddly stuff.
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  12. #132
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    7th October 2015 - 07:49
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    Ken, anyway, it would be good to use high temp resistant chrome-moly steel (A387- 16Mo3 or VDM® Alloy 120) for petals, of course if it’s possible to get.
    Remember old study days spending in library with all types of magazines and books, with every info about two stroke. One of the magazines was an East German KFT, sometimes with a lot of information from other world.
    Still remember picture of MZ cylinder with additional exhaust port located on the opposite side of main exhaust, but connected through long channels around cylinder with main exhaust.
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  13. #133
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    opposed engine

    how opposed do the pistons have to be? with the height issue? https://oldmachinepress.com/2014/02/...iesel-engines/

  14. #134
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    10th February 2005 - 20:25
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    Quote Originally Posted by ken seeber View Post
    Hoosa,
    Dunno whether old mate is a kiwi or an ozzie (well, he had the right Tee shirt), but it was pretty good info. Especially so as my mate, who does the wire cutting, finishes up at the end of Nov. Thank you C19. Just a bit of Saxa salt, a 12V charger, cuppla light bulbs and 20 hours and you're done. Cheers for that one.
    Wil,
    We have this thing in Oz called the "statute of limitations" where paperwork, tax receipts etc don't have to be withheld for longer than 7 years = safe.
    KEN,
    Think this is what I was remembering, :- http://www.stuff.co.nz/waikato-times...ield-shot-down

    OK, if you can prove that you've had it more than 7 years, we'll OK it!
    Strokers Galore!

  15. #135
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    22nd November 2013 - 16:32
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    One doesn't feel too bad when you might consider adding a few injectors or a valve onto a 2 stroke

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    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

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