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Diesel: Two cylinders, four pistons, no head, no valves Diesel: Two cylinders, four pistons, no head, no valves
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  #16  
Old 04-18-2009, 02:06 PM
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Quote:
Originally Posted by bgkast View Post
It looks like it would be really easy to bend the long con-rods for the outer pistons if you were to accidentally hydro-lock it.
They won't bend as they're loaded in tension. That's why they can be so long and skinny. It's got a wonder power/weight ratio, and the modularity is awesome too.

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  #17  
Old 04-18-2009, 07:31 PM
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Originally Posted by ForcedInduction View Post
Just a variation of the old Junkers/Fairbanks-Morse engines, like the Deltic.
Except the marine Fairbanks-Morse engines that I've run had a crank top and bottom, two cycle, 20 pistons in 10 cylinders, and 2000 HP. Those engines are very sweet, nothing "junkey" about them, much more pleasant than a Cat or Jimmy to be in the engine room with.
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  #18  
Old 04-18-2009, 07:42 PM
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Originally Posted by Stevo View Post
Except the marine Fairbanks-Morse engines that I've run had a crank top and bottom, two cycle, 20 pistons in 10 cylinders, and 2000 HP. Those engines are very sweet, nothing "junkey" about them, much more pleasant than a Cat or Jimmy to be in the engine room with.
Not sure if you're joking or not, but 'Junkers' is a reference to the airplane that used a diesel engine like the Fairbanks-Morse with opposing pistons and two cranks.
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  #19  
Old 04-18-2009, 08:18 PM
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Originally Posted by kerry View Post
Not sure if you're joking or not, but 'Junkers' is a reference to the airplane that used a diesel engine like the Fairbanks-Morse with opposing pistons and two cranks.
LOL, So he wasn't calling one of my favorite old marine engines "Junkers"?, as in "crappy", OH sorry Lance
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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"
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  #20  
Old 06-06-2011, 12:55 PM
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Originally Posted by Jerry_W View Post
Another design I ran across. (I honestly thought 'new polish engine' was going to be some warped joke.)
http://www.new4stroke.com/
Well, as the joke is on the whole..

You ever see a real boxer??



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  #21  
Old 06-23-2011, 04:38 PM
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Another animation:

http://www.youtube.com/watch?v=Tz2rQvCxp44



Quote:
Originally posted by monkeysandbearspants
Having digested the content of the thread i conclude that the answer could be one of these !!

However weight may be an issue and mostly certainly there would need to to be some boot modifications!
http://www.full-ahead.net/Silownia/silniki_pomocnicze/sp_index_ang.htm

http://www.full-ahead.net/Silownia/silniki_pomocnicze/remont_sp/awarie_remont/glowica_urw_zaw_isadora/glow_urw_zawor.htm

http://www.full-ahead.net/Silownia/silniki_glowne/sg_index_ang.htm

double bottom fo foam
http://www.youtube.com/user/pawielus?gl=PL&hl=pl#p/u/53/Cfp0BWKwdgY dno


large swimmer:
http://www.youtube.com/user/pawielus?gl=PL&hl=pl#p/u/92/mnxWu3oWghs

Regards Andrew
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  #22  
Old 08-02-2021, 11:16 PM
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My PhD thesis defense ....

https://www.new4stroke.com/mergedeng.pdf

I just need to find a good PhD thesis supervisor....

Andrew

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