"stroker" definition question

[stanton]

so i just got into a discussion and was wondering what you guys would consider a stroker. in cars/trucks/motorcycles its changing the length of piston throw. increasing cc's.
now in skis is it always the same?

 

[Dustin Mustangs]

'Piston throw' is called stroke. Make that bigger than stock and you have a stroker. This could be on your 73 camaro or on your bigwheel.

 

[brett]

I thought I've read that some "stroker' setups just change the length of the rods fpr port-timing...
Never heard that with any othwr motos

 

[the only couch rider]

its for cars but the same general principles apply

http://www.turbomagazine.com/tech/0703_turp_engine_block_math/index.html

 

[WaveDemon]

stroker = longer crank throw.

Just changing the rod length doesn't make it a stroker.

 

[tomski]

"strocker motor"

At the same time can someone explain this one?

thanks

 

[brett]

stroker = longer crank throw.o

Just changing the rod length doesn't make it a stroker.

Yeah...but I thought I've read on here people claiming they had strokers because they had longer rods only...we all know what stroker cranks are supposed to be

 

[the only couch rider]

the only thing shorter rods will do is effect the placement of the piston with in the bore. which will in essence effect the port timing of the motor. the rod is still traveling the same amount whether the rod is x length or x + 2 length.

 

[Dustin Mustangs]

Oh not so, didn't you read that article you linked?

You should also know that a rod's length is proportional to its angularity within the cylinder, which means as rod length increases, the side load of the piston against the cylinder wall decreases - a good thing. Engines with low rod/stroke ratios - short rods or large strokes confined to low deck heights - are prone to premature piston skirt or cylinder wall wear because of their harsh angle and often increased piston speeds. Engines with higher rod/stroke ratios are generally high-rpm friendly.

 

[the only couch rider]

Oh not so, didn't you read that article you linked?

it''s called piston rod angle clearance. that was supposed to be in the last message but it got deleted

 

[WaveDemon]

Yeah...but I thought I've read on here people claiming they had strokers because they had longer rods only...we all know what stroker cranks are supposed to be

that's not a stroker. it changes port timing and dwell time though.