diference between bicycle engines?!?

hotrodseanxx · #1 (**permalink**) 04-22-2008, 11:02 PM

Does anyone know the difference performance wise between the wizzer 49cc 4-stroke and the 70cc 2-stroke??
I only know this bout the 4-stroke and 2-stroke:
Engine type Air-cooled 4-stroke OHV single-cylinder
Displacement 49.1cc
Bore X Stroke 41.8 X 35.8 mm
Maximum Power Output 2hp(1.5kw)/ 6,800rpm
Compression Ratio 7.4:1
Carburetor Float Type
Ignition Transistorized Magneto
Starting System Recoil Pull-Start
Fuel Type Regular Unleaded Gasoline
Fuel Tank Capacity .5 Gal (1.89L)
Lubrication System Forced Splash
Oil Capacity 8.48 ounces (250ml)
Engine Oil SAE 10W30
Air Filter Semi-dry
Throttle Twist-Grip
Clutch Automatic Centrifugal
Transmission Shiftless Reduction Gearbox
Final Drive Chain-drive

2 Cycle / Air cooled
70 c.c.
30+ m.p.h.
Manual Clutch
Chain Drive

Thanks

**Bikeguy Joe** · #2 (**permalink**) 04-23-2008, 07:14 AM

50cc+4 stroke= slow and smooth.
67.5cc's+2 stroke= double the power, half the smoothness.

hotrodseanxx · #3 (**permalink**) 04-23-2008, 11:13 AM

ok thanks

HoughMade · #4 (**permalink**) 04-23-2008, 12:21 PM

A Whizzer engine 138ccs, not 50ccs

http://www.whizzermotorbike.com/NE5Brochure.htm

You must be referring to some other engine.

As for the comparison- I will put my 49cc 4 stroke up against a 48cc 2 stroke on power- and I dare say, some 69 cc engine. In theory, 2 strokes have an advantage, but the difference between a Chinese 2 stroke and a Honda 4 stroke is more than how often the plug fires.

hotrodseanxx · #5 (**permalink**) 04-23-2008, 12:56 PM

you are right i am looking at a different company, lol i read the name fast oh well it is a wizard not a whizzer

this is the site though
Motor-ize your Bicycle with our Bike Engines Kit. Engine Kits include gasoline motors and mounting hardware. Bicycle not included.

**Bikeguy Joe** · #6 (**permalink**) 04-23-2008, 02:31 PM

Quote:

Originally Posted by HoughMade

A Whizzer engine 138ccs, not 50ccs

http://www.whizzermotorbike.com/NE5Brochure.htm

You must be referring to some other engine.

As for the comparison- I will put my 49cc 4 stroke up against a 48cc 2 stroke on power- and I dare say, some 69 cc engine..

You're on!

**Bikeguy Joe** · #7 (**permalink**) 04-23-2008, 02:32 PM

Sean, that's a standard frame mount set up some here run. Most run the two stroke.

hotrodseanxx · #8 (**permalink**) 04-24-2008, 01:01 AM

wow wait where did the 138cc come from?! and aren't all a frame mount engine? I'm a little tired and confused been a long stressful night!!!

**Bikeguy Joe** · #9 (**permalink**) 04-24-2008, 06:55 AM

The "Whizzer" is a 138cc 4 stroke, the frame mount "wizard" is a China built 67.5cc two stroke. The Whizzer is built in Taiwan, the China-co. engines are built in China, a slight difference.

A Whizzer is 1600 bucks, a China-co. kit is 200.

hotrodseanxx · #10 (**permalink**) 04-24-2008, 09:30 AM

oh ok, 138cc just seemed big for a bike... nevermind tho