Old multi-cylinder bikes of the 50s to later on. Japanese, British, Euro, etc

[avgas]

So the engine out of say the 80's bmw k100's, are they flats or L4's?

I never liked the term "Flat" as it doesn't explain anything. An R1 pulling a mono is a "Flat 4".

Boxer or Opposing at least tells you what the pistons and the crank are doing.

You don't hear rotaries being called "Spinning Discs" or a pit bike being called a Flat 1.

Raises the question - if you turn a V twin upside down - what is it called? (remember L twins?)

[agman]

I never liked the term "Flat" as it doesn't explain anything. An R1 pulling a mono is a "Flat 4".

Boxer or Opposing at least tells you what the pistons and the crank are doing.

You don't hear rotaries being called "Spinning Discs" or a pit bike being called a Flat 1.

Raises the question - if you turn a V twin upside down - what is it called? (remember L twins?)

Ermm an A twin? Or just a bloody pointless idea.

[Drew]

Or just a bloody pointless idea.

Ohhhh, I don't know. Be a good way to pump lots of oil out of an exhaust pipe...If you had a need to do something like that.

[agman]

Ohhhh, I don't know. Be a good way to pump lots of oil out of an exhaust pipe...If you had a need to do something like that.

Harleys do it anyways... xD

[avgas]

Ohhhh, I don't know. Be a good way to pump lots of oil out of an exhaust pipe...If you had a need to do something like that.

What a fantastic idea!
I was so sick of the oil leaking out of the crankcase. That way I could get home - shove a bung in the exhaust and all the oil will be waiting for me when I start the bike up again.

Plus who needs sump plugs when a spark plug is the only thing holding the black stuff in?

[agman]

What do you all it when the engines runs across the chassis, like a guzzi?

I love guzzis.

[Drew]

What do you all it when the engines runs across the chassis, like a guzzi?

I love guzzis.

Transverse is the term you're looking for.

[agman]

So a r1 has a transversely mounted L4?

So what would you call it on say a harley?

[Drew]

So a r1 has a transversely mounted L4?

So what would you call it on say a harley?

No no. An R1 has an inline 4. IL4. A Harley has a V-twin. A guzzi is also V-twin, but transverse because the crank runs perpendicular to the wheels.

[dangerous]

shit, you lot have screwed this thread LOL

It's an inline four you over complicating prick!
Yamaha and Toyota use modern DOHC slant motors. Slugs leaning at up to 35°. They're still an inline four, what's the difference.
Transverse inline four at best, since the crank is 'north/south' I suppose.

SIR complicating prick to you wigga and the differance is they are a SLANT IL4, just like the CF230 or Valient 2.7

You don't hear rotaries being called "Spinning Discs" or a pit bike being called a Flat 1.

Raises the question - if you turn a V twin upside down - what is it called? (remember L twins?)

Re the pit bike, if like the Guzzi Falcone or aremachi the YES flat single
Re a upside V2... it be a 3rd in a half radial... a L is a L

I never liked the term "Flat" as it doesn't explain anything. An R1 pulling a mono is a "Flat 4".

gezzzzus, pulling a mono it would be virtacal... if a R1 did a stoppie it would be a flat 4

So a r1 has a transversely mounted L4?
So what would you call it on say a harley?

fuck sake... IL4 thats INLINE 4 L4 is something different, and a bloody harley is a V2

[T.W.R]

It's an inline four you over complicating prick!

Yamaha and Toyota use modern DOHC slant motors. Slugs leaning at up to 35°. They're still an inline four, what's the difference.

Transverse inline four at best, since the crank is 'north/south' I suppose.

Yamaha created the design for Toyota's engines

[Drew]

Yamaha created the design for Toyota's engines

I know. Hense I mentioned Toyota.

[T.W.R]

Engine configurations

Categorisation by piston motion

Engine types include:

Single-cylinder engines
Inline engine designs:
Straight engine, with all of the cylinders placed in a single row
U engine, two separate straight engines with crankshafts linked by a central gear.
The square four is a U engine where the two straight engines have two cylinders each.
V engine, with two banks of cylinders at an angle, most commonly 60 or 90 degrees.
Flat engine, two banks of cylinders directly opposite each other on either side of the crankshaft.
H engine, two crankshafts.
W engine. Combination of V and straight, giving 3 banks, or two V's intertwined giving 4 banks.
Opposed piston engine, with multiple crankshafts, an example being:
Delta engines, with three banks of cylinders and three crankshafts
X engine.
Radial designs, including most:
Rotary engine designs. Mostly seen on pre-WWII aircraft.
Pistonless rotary engines, notably:
Wankel engine.

The standard names for some configurations are historic, arbitrary, or both, with some overlap. For example, the cylinder banks of a 180° V engine do not in any way form a V, but it is regarded as a V engine because of its crankshaft and big end configuration, which result in performance characteristics similar to a V engine. But it is also considered a flat engine because of its shape. On the other hand, some engines which have none of the typical V engine crankshaft design features and consequent performance characteristics are also regarded as V engines, purely because of their shape. Similarly, the Volkswagen Group VR6 engine is a hybrid of the V engine and the straight engine, and can not be definitively labeled as either.

[dangerous]

hey motor nerds... who can name the bike that has a oposed flat non transverse twin?

[T.W.R]

hey motor nerds... who can name the bike that has a oposed flat non transverse twin?

there's plenty but an easy one is Douglas