two stroke v. four stroke

Dragon · 01-11-2008, 11:01 PM

I'm considering a 50cc scooter. Which kind of motor is more powerful: 2 stroke or 4?

olds_cool · 01-11-2008, 11:08 PM

A 2 stroke 50cc is kind of like having a 100cc 4 stroke. It makes power on both the up and down stroke. A 4 stroke makes power every other stroke.

VinceDrake · 01-12-2008, 03:45 PM

WHile I have to agree, 2 stroke is likely going to have more high rev power, they tend to be less reliable and more "touchy" than 4 strokes. ALso, the life expectancy or a two stroke is significantly less than a comparable 4 stroke. That being said, 2 strokes are easier and lighter to work on. Good thing too. Providing you can get parts.

Like GOBs used to say,"Four strokes are for machines, Two strokes are for toys." Me I like my toys, but they're not for everyone.

coleary15 · 01-12-2008, 07:26 PM

i would skip the 50cc 2-stroke and go 4 a 150cc 4-stroke...i have a 2-stroke yamaha banshee (350cc) and 200cc 4-stroke dirtbike and the 4- stroke is significantly better torque but more speed with a 2-stroke...its all preference....

Dragon · 01-12-2008, 09:55 PM

50cc bikes are considered "moped" in Texas. I think they require no license or insurance.

tortoise · 01-13-2008, 12:26 AM

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Dragon · 01-13-2008, 11:12 AM

Does that mean I'd have to register and get insurance for a Vento Zip R3i?

By the way, how is the acceleration on a lighter-weight 50cc two stroke compared to a heavier-weight 250cc motorcycle?

01-11-2008, 11:01 PM	#1
Dragon Join Date: Nov 2007 Location: Tejas Posts: 834	two stroke v. four stroke I'm considering a 50cc scooter. Which kind of motor is more powerful: 2 stroke or 4?
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01-12-2008, 03:45 PM	#3
VinceDrake Join Date: Nov 2007 Location: Southern Saskatchewan Posts: 491	WHile I have to agree, 2 stroke is likely going to have more high rev power, they tend to be less reliable and more "touchy" than 4 strokes. ALso, the life expectancy or a two stroke is significantly less than a comparable 4 stroke. That being said, 2 strokes are easier and lighter to work on. Good thing too. Providing you can get parts. Like GOBs used to say,"Four strokes are for machines, Two strokes are for toys." Me I like my toys, but they're not for everyone. __________________ "Sometimes it is better to say nothing, and let people think you're an idiot, than to open your mouth and prove it."
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01-11-2008, 11:08 PM	#2
olds_cool Join Date: Dec 2006 Posts: 291	A 2 stroke 50cc is kind of like having a 100cc 4 stroke. It makes power on both the up and down stroke. A 4 stroke makes power every other stroke.
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01-12-2008, 07:26 PM	#4
coleary15 Join Date: Jan 2008 Posts: 127	i would skip the 50cc 2-stroke and go 4 a 150cc 4-stroke...i have a 2-stroke yamaha banshee (350cc) and 200cc 4-stroke dirtbike and the 4- stroke is significantly better torque but more speed with a 2-stroke...its all preference....
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01-12-2008, 09:55 PM	#5
Dragon Join Date: Nov 2007 Location: Tejas Posts: 834	50cc bikes are considered "moped" in Texas. I think they require no license or insurance.
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01-13-2008, 12:26 AM	#6
tortoise Join Date: Jan 2008 Posts: 221	..
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01-13-2008, 11:12 AM	#7
Dragon Join Date: Nov 2007 Location: Tejas Posts: 834	Does that mean I'd have to register and get insurance for a Vento Zip R3i? By the way, how is the acceleration on a lighter-weight 50cc two stroke compared to a heavier-weight 250cc motorcycle?
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