139 mph on 3 cubic inches
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139 mph on 3 cubic inches
50 cc turbo charged Aprilia, giving 21 horsepower.
Simpler is better, except when complicated looks really cool.Tags: None -
Re: 139 mph on 3 cubic inches
Any idea what mileage that'd put out? Put a third wheel on that and it might be practical for other uses. Cool. -
Re: 139 mph on 3 cubic inches
Back in about 1969 Suzuki developed a THREE-CYLINDER 50cc two stroke roadrace motor that churned out 19 HP normally aspirated. It is said to have been the highest specific output, (400 HP/liter) any piston engine ever achieved. The powerband was so narrow (about 500 RPMs) a 12 speed transmission was required. Unfortunately for Suzuki the FIM changed the rules for 50cc roadracers. One cylinder only and no more than six gears in the tranny.
Sorry! No picture. You'll just have to use your imagination.
p.s. By the 1980s 50 cc roadrace singles were converting to rotory valve and output was so high the bikes were capable of about 115 MPH.Last edited by Cuyahoga Chuck; 05-10-2012, 07:35 PM.Comment
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Re: 139 mph on 3 cubic inches
The Suzuki RP68! I've seen one at the Barber Museum in Alabama.
piston assembly. . .
gearbox. . .
Crazy!Last edited by Paul Pless; 05-10-2012, 07:58 PM.Simpler is better, except when complicated looks really cool.Comment
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Re: 139 mph on 3 cubic inches
The Suzuki RK 66 was a water-cooled two cylinder two-stroke with rotory disk that put out 18 HP @ 18,000 RPM thru' a 14 speed gearbox. Top speed was 110 MPH. This bike won the 50 cc world roadrace title in 1969 ridden by Hans Georg Anscheidt.
Get the picture?Last edited by Cuyahoga Chuck; 05-10-2012, 08:08 PM.Comment
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Re: 139 mph on 3 cubic inches
In 1908 Glen Curtiss did a world motorcycle record of 137 MPH on the sand at Ormond Beach, Florida, using an 8 cylinder engine of his own design.
That was about the end of his two-wheeled career. From then on it wa airplanes.Last edited by Cuyahoga Chuck; 05-10-2012, 08:21 PM.Comment
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