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#1
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single cylinder 4 stroke - is there such a thing
Seems to me that there wouldn't be enough momentum for good intake and compression strokes.
Sixto 91 300SE 87 300SDL 83 300SD |
#2
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i beleive many of the four-stroke four wheelers(atv's) are one cylinder. Also, arent most lawn mowers only one cylinder?
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83 300SD.......sold 96 integra SE....sold 99 a4 quattro....sold 2001 IS300.......sold 2002 330i.........current. 2004 highlander limited....current. |
#3
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There is such as a thing, lawn mowers, power equipment, and some model engines are all four stroke.
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#4
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In response to RG5384:
One cylinder but two stroke? There's combustion every time the piston gets to the top of its travel in a two stroke, not every other time as in a four stroke.. Sixto 91 300SE 87 300SDL 83 300SD |
#5
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Some mowers are two, some are four. Four strokes are more fuel efficient, but dont make as much power, two strokes are powerful but inefficient and they leak lots of unburned oil (because they have ports, not valves, and at certain times the exhaust and intake ports are open at the same time)
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#6
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Re: single cylinder 4 stroke - is there such a thing
Seems to me that there wouldn't be enough momentum for good intake and compression strokes.
They have heavier flywheels to carry them thru the strokes.
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past MB rides: '68 220D '68 220D(another one) '67 230 '84 SD Current rides: '06 Lexus RX330 '93 Ford F-250 '96 Corvette '99 Polaris 700 RMK sled 2011 Polaris Assault '86 Yamaha TT350(good 'ol thumper) |
#7
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There are any number of single cylinder four stroke motorcycles, and have been for years ("thumpers"). The BMW F650 currently qualifies, as do 650 (and smaller) dual purpose bikes from all the Japanese makers. I think Ducati even raced a single a few years ago.
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#8
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I had a radio controlled car with a .26 ci 4-stroke engine
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2008 BMW 335i Coupe |
#9
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Quote:
motorcycles anyone?
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past MB rides: '68 220D '68 220D(another one) '67 230 '84 SD Current rides: '06 Lexus RX330 '93 Ford F-250 '96 Corvette '99 Polaris 700 RMK sled 2011 Polaris Assault '86 Yamaha TT350(good 'ol thumper) |
#10
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Way back when, when I first ventured into off road motorcycles, my best friend bought his own dirt bike. I think it was a Kawasaki, but I'm not sure now, it was a single cylinder 250, four stroke.
4 strokes were great for the kind of riding we did off road. You can putt-putt through the trees and what not all day, then hammer it on the open stretch with no problems. You can't putt-putt in a 2 stroke too long or the plug will foul, great for $hittin-n-gittin though. Forgot to mention the first "real" bike I ever rode, a big ol' BSA 500. That was a single cylinder road bike. My dues paid to be able to ride? I had to kick start the beast. I was 15 at the time, but I got it running, with a bruised shin for a badge of honor.
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Mike Tangas '73 280SEL 4.5 (9/72)- RIP ![]() Only 8,173 units built from 5/71 thru 11/72 '02 CLK320 Cabriolet - wifey's mid-life crisis 2012 VW Jetta Sportwagon TDI...at least its a diesel Non illegitemae carborundum. Last edited by MikeTangas; 03-10-2003 at 07:41 PM. |
#11
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Just wondering, on the 4 stroke small engines i.e. lawnmowers, chainsaws (I didn't know 4 stroke chainsaws existed?), etc, do you still need to mix oil into the gas, or do they have an oil pan? Also, on the 4 stroke chainsaws, how did they make it so that the oil didn't go all over the place (i.e. away from the sump) whenever the engine is at an angle?
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2001 VW Jetta TDI, 5 speed, daily driver 1991 Ford F-350, work in progress 1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D Spark-free since 1999 |
#12
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Single cylinder four stroke
:p Speaking of single cylinder four strokes, I have a '58 BMW Isetta. It's a 300 cc four stoke engine with the firing order "1". It will go 50 mph under the right conditions. I've also had a Messerschmitt 3 wheeler KR-200. A single cylinder 2 stroke of 197cc powered the beast. It too would go 50, but with ultra direct steering and the ability to get up on 2 of the three wheels made quick turns exciting. A neat thing about the 'schmitt - to get reverse you shut off the engine, push in the key and the motor re-starts BACKWARDS - you have four speeds in reverse if you dare !!
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#13
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Re: Single cylinder four stroke
Quote:
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#14
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Just about every four stroke dirt bike is a single, ranging from (usually) 50cc to 650cc or so. Works well. Very torquey, easy to maintain, and compact for good packaging.
Honda makes some superb four stroke singles that have been used for decades. Exceptional engines.
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John Shellenberg 1998 C230 "Black Betty" 240K http://img31.exs.cx/img31/4050/tophat6.gif |
#15
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John,
I just noticed your new avitar picture. Are you losing weight?
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Mike Tangas '73 280SEL 4.5 (9/72)- RIP ![]() Only 8,173 units built from 5/71 thru 11/72 '02 CLK320 Cabriolet - wifey's mid-life crisis 2012 VW Jetta Sportwagon TDI...at least its a diesel Non illegitemae carborundum. |
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