For those that have it all -- TZ1500

[D.J]

TZ-1500 Yamaha Drag Bike - Running

Bit of Carb Synchronising fun??

[Evil Dwarf]

...

[Benno #03]

Thats a pretty serious sounding bike.

[D.J]

there must be twenty clutch plates in there

[96]

Twin cranks hey.... Intetesting

[Desmo]

I wonder why they have put V8 on the side of the motor when it's a square 8?

[96]

I wonder why they have put V8 on the side of the motor when it's a square 8?

I was under the impression that a 'square' motor had the both rows of pistons moving parallel to each other???

[Desmo]

Valid point, I always construed a square motor to have 2 cranks, but I suppose it is in a V configuration.

[96]

Works both ways i think. Just trolled about an it seems that a square engine, cam be reffered to as a u-engine, and that shape would suggest parallel cylinders, although the actuall definition does appear to be a twin crank engine, with two straight cylinder banks.

[filbert]

rz500 was labelled a v4 and i thought it had 2 cranks like the other 500smokers?

[Shaunor8]

I'm pretty sure that the only time an engine is referred to as being square, is when the stroke of the engine is equal to the bore.

[96]

That Is also a square engine. Square engine

But look at an ariel square four for the other type

I think the rz500 was the only gp bike running twin cranks??? Pretty sure hondas nsr was a pure V4

[Shaunor8]

Please pardon my ignorance. Learn something new every day!

[filbert]

aah forgot the nsr you would be correct that it is pure v4 but after a quick bit of phone googling it looks like the honda is actually the exception and was the only gp 500 running a single crank at that time.

[Geeza]

Wahoo! a power band from hell!! Sweeeeet

[96]

aah forgot the nsr you would be correct that it is pure v4 but after a quick bit of phone googling it looks like the honda is actually the exception and was the only gp 500 running a single crank at that time.

Typical, Honda gets it right the first time.


Ps, loving the love in this thread. No angry going on in here

[Desmo]

I'm pretty sure that the only time an engine is referred to as being square, is when the stroke of the engine is equal to the bore.

Yes, you can use square (and over square/under square) to indicate the ratio of bore:stroke.
A square engine also denotes parallel cylinders on two axis, a'la the Square 4 or YZR500.

[Shaunor8]

Ha ha, yeah not like the chain lube thread, I think the gloves are off!

[Shaunor8]

Typical, Honda gets it right the first time.


Ps, loving the love in this thread. No angry going on in here

Sorry mate, I was replying to this

[D.J]

They call the Duke a L twin , this looks similar, will try to dig up some more extra cylinder 2T's