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Topic: Twingle engine

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	Twingle engine -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-04)
		The Twingle engine is a small-capacity (Click link for more info and facts about two-stroke) two-stroke (A volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines) gasoline engine.
		Both the Garelli and Marcellino engines are sometimes described as two-cylinder and sometimes as one-cylinder.
		Possibly as a result, the Twingle is sometimes confused with the (Click link for more info and facts about opposed piston) opposed piston two-stroke (An internal-combustion engine that burns heavy oil) diesel engine design, which has two pistons per cylinder at opposite ends of the cylinder, and no cylinder head at all.
	www.absoluteastronomy.com /encyclopedia/T/Tw/Twingle_engine.htm (368 words)

	Talk:Opposed piston engine - Wikipedia, the free encyclopedia
		This site also has a description of a later two-piston engine designed by Giovanni Marcellino, but with different sized pistons and a more elaborate connecting-rod setup, which seems to be the twingle engine described at this website.
		Both engines were manufactured by Puch at their Graz works, the Marcellino design replacing the Garelli, and are described at the first site as one-cylinder double-piston two-stroke engines, but I'd describe them both as having two parallel cylinders sharing a single cylinder-head.
		The designer appears to wish to use the term, but his engine does not seem to have been built or demonstrated, and until it is the existing engines surely have priority on the name.
	www.wikipedia.org /wiki/Talk:Opposed_piston (359 words)

	Encyclopedia: Twingle engine
		The Twingle engine is a small-capacity two-stroke gasoline engine.
		Two versions of the Twingle engine were produced by Austrian moped manufacturer Puch.
		Possibly as a result, the Twingle is sometimes confused with the opposed piston two-stroke diesel engine design, which has two pistons per cylinder at opposite ends of the cylinder, and no cylinder head at all.
	www.nationmaster.com /encyclopedia/Twingle-engine (359 words)

	AllstateTwingle (Site not responding. Last check: 2007-11-04)
		The twingle has to be one of the strangest configurations ever tried for a motorcycle.
		Twingles are not at all fast but I think the configuration does give them better gas mileage, a real problem with most two strokes.
		The twingle is a two stroke which means that oil is mixed with the gas and after it passes through the crank case and lubricates everything it goes to the combustion chamber where it is burned.
	www.physiology.usouthal.edu /restore/allstate.htm (504 words)

	Coleman fuel instead of gasoline.........
		On an engine that would be ping limited, if the manufacturer knows you are using a high octane fuel, he can raise the compression ratio, increase the timing and change the valve timing and overlap to increase power.
		These occurrences are most problematic in engines with large bores, high compression ratios, (or effectively high compression ratios due to super or turbo charging), and advanced ignition timing, though the problems can occur in many engines if the conditions are right.
		It is a very destructive condition for the engine, with everything involved taking a beating, to include pistons, valves, bearings, etc. I have seen pistons with holes burned completely through them caused by detonation, and valves beat up into their seats so badly that the heads were unuseable.
	rcudev.rcuniverse.com /forum/m_1423135/printable.htm (2353 words)

	Will Julian ever be able to tame his desire to post on the CW forums? - Topic Powered by Groupee Community (Site not responding. Last check: 2007-11-04)
		The engine was stuffed into a strong tubular frame and made for a big, fast desert mount.
		Although the TDM is in reality a twin, it acts like a large single(or twingle), and with both pistons rising, falling and firing at the same time, it is quite the thumper.
		It uses an engine similar to the one in the Honda Hawk GT (650).
	forums.cycleworld.com /eve/ubb.x/a/tpc/f/4406036/m/5166056 (1240 words)

	[No title]
		The advantages of the subject engine design in the days before widespread use of the rotary valve in two-strokes lay basically in the enhanced ability to time the fuel air charge and in better combustion chamber scavenging.
		In the Puch/Sears engine one cylinder is situated directly behind the other; the front contained the exhaust ports and the rear the intake ports.
		The engine is tuned in the Puch/Sears version to be very tractable at low RPM and to be reliable as the bike was built for post-WW2 Southern Europe.
	home.earthlink.net /~troyce5/Stories/Allstest.doc (3080 words)

	Zope Europe - Against the Grain
		Twingle, an OSCOM project to build a common CMS authoring tool, was a more ambitious attempt to pool energy to meet a common need.
		Twingle reinforced the lesson that quick, tangible efforts are ideal for bringing unity.
		Twingle, if it reaches its goal of improving the user experience, can be a reward for work spent on interoperability.
	www.zope-europe.com /articles/200305/againstthegrain/view (1289 words)

	RE: Turbo or Supercharging a EX500 engine???? (Site not responding. Last check: 2007-11-04)
		From there, the engine mods are possible to go up to 90+ hp.
		Consider the crank, a 598cc piston kit from Engine Dynamics, oversized exhaust valves, CR/Flat slide carbs, etc. and it'll be pretty reliable (though cost a large chunk of your budget).
		I have a chart of some engine layouts (the Team Charm motor analysis) at: http://top.monad.net/~trident/ecco/motor.htm I have a reliable 68hp from my stock bored motor, but the head has been hogged out a bit, and I have a pretty high compression ratio.
	www.ninja500.com /archives/2000-06/msg00426.html (651 words)

	Things you (might) need to know
		While most motorcycle engineers reserve the twingle moniker for a two-cylinder engine modified to fire both cylinders at the same time, it is arguable that the two-stroke split single engine might also fit under that umbrella.
		This arrangement (when viewed from the left side of the engine) rotates counterclockwise and the exhaust ports close slightly before the transfers do, and also open slightly before the transfers open.
		Call it a twingle if you must, but now you should understand why it really is a split single.
	allstateguy.tripod.com /id8.html (509 words)

	Model engines of unknown origin (Site not responding. Last check: 2007-11-04)
		But figuring the engines are certainly buildable, he's willing to offer a set of castings to anyone who is able to provide plans--assuming they are part of a larger population of such engines and not a one-off, back-yard foundary job.
		To complete assembling the engine, either the conrod wrist pin hole must clear the case casting with the crank at TDC, thus allowing the piston to be attached after the rods have been assembled, or a hole must be drilled in the case to allow the pin to be inserted through the case.
		David of Bourke Engines had emailed not long prior to this, suggesting that this Watzit was based on Russell Bourke's design where the volume under each each piston is sealed around the Scotch-yoke rod--feasible because the rod's motion is linear--thus providing each cylinder with its own independant, two-cycle transfer pump.
	archive.dstc.edu.au /BDU/staff/ron/watzit (8208 words)

	wm.l.scheding's bmwsearch digest (Site not responding. Last check: 2007-11-04)
		Twingle (#2) ="I hate to be picking the fly shit out of the pepper, but the definition of "twingle" isn't quite right.
		But, if you didn't turn the engine at all, and installed the left head and sprocket after doing the right side, you would have both camshafts set for TDC on the compression stroke at the same time.
		A stock BMW engine has one cylinder at tdc compression, while the other cylinder is finishing the exhaust stroke and is just begining to intake (maybe a little bit of overlap).
	www.bmwsearch.net /main/digest/V2003/N14/digest-20031408.html (2418 words)

	Dictionary of Meaning www.mauspfeil.net
		These run in two parallel Cylinder (engine) cylinder bores but share a single combustion chamber, spark plug and cylinder head.
		The one of the earlier engine does not show the transfer port clearly at all.
		There you find a list of all editors and the possibility to edit the original text of the article Twingle engine.
	www.mauspfeil.net /Twingle_engine.html (452 words)

	The Chain Gang Forums (Site not responding. Last check: 2007-11-04)
		It was good for about 10 minutes at that engine speed, maybe about 12,000 rpm, before the piston would overheat due to the lack of the decent metallurgy and alloys that we now possess.
		Their engines were more powerful and much more efficient than their contemporaries, but by the 1950's were obsolete and far surpassed by the loop-scavenged design.
		The "twingle" design was obviously limited in its ability to make power, but it was reliable and relatively efficient and made good torque.
	www.f650.com /forums/ShowPost.aspx?PostID=83371 (4047 words)

	Engine & fuel engineering - Firing order and traction
		Engineers who design braking systems seem to think that ABS when properly applied is more effective than standard brakes in that the ABS systems lock and unlock (pulse) the brakes as many as 20 times per second depending on the system providing shorter stopping distances as opposed to being in a partial to complete skid.
		The engines with 2 large cylinders require more of energy be stored in a flywheel than a similarly displaced 4 cylinder in order to compress that large volume of air.
		Also from what I have read GP engines prior to the big bang firing order had a very savage power delivery (ie a big step in the torque curve) and the big bang firing order an effect of softening the throttle response making the bikes easier (relaitvely) to ride.
	www.eng-tips.com /viewthread.cfm?qid=89318 (3839 words)

	DRN Forums - Possible to supercharge a 2-stroke?
		Jon K. Rich; as cool as the twingle is; that is not the engine I was referencing.
		The issue of the bottom ring wearing and pumping out the oil was the only thing I saw that never became a serious issue being in a yard close to a shop.Just change the "slugs and jugs" when it used a gallon of oil a day.
		I can't say that they are a bad engine but a lot of the drivers complained about them.ALso they are not available for the cab and chassis that my bosses like so I know very little about them.
	www.dirtrider.net /forums3/archive/index.php/t-72434 (2047 words)

	Motorbikes
		This had a two stroke engine with two pistons in two bores (one behind the other) but with a common combustion chamber on top.
		It was, if I remember rightly, in a very dilapidated state and so, again uncharacteristically, my Father pitched in and put his considerable engineering skills to work to fully restore it to it's former glory.
		If any of you out there don't know about Vincent motorcycles, they were a British bike most famous for the 'Black Shadow' and 'Rapide' models; V-twins of 1000cc that in 'tweaked up' form held the motorbike speed record for many years.
	buckleyschance.mysite.wanadoo-members.co.uk /motorbikes.htm (1528 words)

	Motorcycle Message Board - Motorcycle USA
		I would imagine the 250cc Norton Jubilee was of this layout also, certainly the larger British twins were, such as the Triumph Tiger 90 which was a 350 version of their 500cc unit construction engine.
		I am looking to get my hands on a twin cylinder motorcycle engine that is 300cc or less, is a four stroke, and has both pistons moving in phase, not 180 degrees out of phase.
		For a conversion that was called "twingle", the cams and ignition put the power stroke happening at the same time, to give the characteristics of a single.
	forum.motorcycle-usa.com /pr.aspx?f=18&m=131668 (500 words)

	Encyclopedia: PUCH
		This racing bicycle is built using lightweight, shaped aluminum tubing and carbon fiber stays and forks.
		The Vespa is a line of motor scooters that was first manufactured in Genoa, Italy in 1946 by Piaggio and Co, S.p.
		Four wheel drive or 4x4, is a type of four wheeled vehicle drivetrain configuration that enables all four wheels to receive power from the engine simultaneously in order to provide maximum traction.
	www.nationmaster.com /encyclopedia/PUCH (494 words)

	DixieDualSport - Southern Adventure Riders (Site not responding. Last check: 2007-11-04)
		engines bolted together with a slip joint so you could phase the thing to fire every revolution or
		as the engine tried to rev to 142,000 rpm; shifts that went up for low and one that was all up
		jammed between the engine cases and the front axle.
	www.dixiedualsport.com /hertfelder5.html (676 words)

	Puch article - Puch Austrian motorcycle Piaggio mopeds 1970s 1980s 1997 Janez Moped - What-Means.com (Site not responding. Last check: 2007-11-04)
		In 1934 it became the group known as Steyr Daimler Puch.
		It produced the famous Twingle engine and the Maxi, Newport, and MK mopeds popular from during the late 1970s and early 1980s
		Steyr Puch still exists next to the Piaggio division, which took over production of mopeds labeled Puch in 1997.
	www.what-means.com /encyclopedia/Puch (116 words)

	Puch -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-04)
		Puch (sounds like spook) is a (Click link for more info and facts about manufacturing) manufacturing company in (An industrial city is southeastern Austria) Graz, (A mountainous republic in central Europe; under the Habsburgs (1278-1918) Austria maintained control of the Holy Roman Empire and was a leader in European politics until the 19th century) Austria.
		The company was founded in 1889 and soon became a producer of (4-wheeled motor vehicle; usually propelled by an internal combustion engine) automobiles, (A wheeled vehicle that has two wheels and is moved by foot pedals) bicycles, and (A motor vehicle with two wheels and a strong frame) motorcycles.
		Steyr-Puch, assembler of (Click link for more info and facts about four wheel drive) four wheel drive vehicles and parts, still exists next to the Piaggio division.
	www.absoluteastronomy.com /encyclopedia/P/Pu/Puch.htm (221 words)

	Moped Army - Re: Twingle?
		Ok so in staying with all that is holy in the moped world I have decided to cancel the project bike with a 200cc honda engine which can be found here: www.geocities.com/sgtshadows.
		I know at this point you are probably thinking i will go with an older sears allstate puch twingle 200 or 250, however that is not the case because to find one repairable is near impossible and my funding is limited.
		Like most twingles this engine will fire both pistons on the same stroke.
	www.mopedarmy.com /forums/discuss/read.php?f=7&i=13419&t=13378&v=f (526 words)

	U engine -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-04)
		This configuration is uncommon as it is heavier than a V design, it main interest is to share common parts with Straight engines.
		An engine of this type was the 16-cylinder engine found on the (Click link for more info and facts about Bugatti) Bugatti Type 45, and only two were produced.
		However, Bugatti licensed the design to (Click link for more info and facts about Duesenberg) Duesenberg in America, who produced about 40, and (Click link for more info and facts about Breguet) Breguet of France, who both intended the engine for aircraft use.
	www.absoluteastronomy.com /encyclopedia/U/U/U_engine.htm (158 words)

	Two Wheeled Tales (Site not responding. Last check: 2007-11-04)
		However, the engine was having increasing trouble starting, and a slow bike was becoming even slower.
		Luckily there were more on the piston, so I just removed the culprit and reassembled the engine with one ring short.
		Today, all I have left of the Allstate Twingle are some fond memories, a few fading pictures and a burnt piston that I have absolutely no use for, but for some unexplainable reason just cannot part with.
	www.twowheeledtales.com /ourBikes/Sears250/page03.htm (398 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		The majority of components for the first prototype engines are now in stock and the first dry builds have begun.
		The first public showing of the engines at the Munich Motorcycle Show was a great success.
		We had already given this careful consideration and designed a multi-piece camshaft which allows the engine to run in either even firing or 'big bang' configurations.
	www.maxsym.com /article.php?id=40 (651 words)

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