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richarddurgee
Senior Member
Username: richarddurgee
Post Number: 2335
Registered: 11-2001
| | Posted on Saturday, February 20, 2010 - 05:43 am: | 
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gregoryan
Senior Member
Username: gregoryan
Post Number: 58
Registered: 09-2004
| | Posted on Saturday, February 20, 2010 - 06:53 am: |
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I never knew of such an engine! WoW!
This design would escape the problem of crankcase oil dilution, as the petrol/air mix is not drawn in thru the crankcase at all! Perhaps in this case straight petrol could be used, and the crankcase be filled as a 4 stoke is, with oil!?!? This oil could not be lost up any transfer ports, then burnt, wastefully.
It would have been as dear to make as the 4 stroke, so if people didn't understand the benefit, perhaps they'd buy the simple valveless 2 stroke.
Piston weight would be large, but putt-putts don't rev fast anyhoo. I doubt it would have made the 1200 revs under load as a single cylinder?
Does anyone know of one of these engines in existence - and how well it goes?
Thanks for posting!
I wonder if there are any petrol 2 strokes that use a poppet EXHAUST valve in the head, and crankcase induction? |
jb_castagnos
Senior Member
Username: jb_castagnos
Post Number: 509
Registered: 07-2002
| | Posted on Saturday, February 20, 2010 - 09:54 pm: |
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Interesting concept Richard, piston resembles the vacuum engines designed for milking machines.
These post keep the site interesting, thanks. |
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