General > Riding Stories
JFAB's KX500AF
BDI:
--- Quote from: stewart on September 14, 2009, 12:03:12 PM ---
--- Quote from: BDI on September 14, 2009, 06:03:37 AM ---10:1 my freind, 10:1 8-)
--- End quote ---
brain do you mean 10to 1 on compression. i think jerry set that motor at 13.5
--- End quote ---
Yes Stewart That's what I mean. From my experiance with other bikes 10 to 1 makes for a very rideable bike. I think a full tilt Stewart engine with a comp of 10 to 1 would work awsome on the moto crosss track. My buddy had a 98 yz250, That 250 was the fastest production 250 I have ever seen. The power onset was as smooth as butter. The bike was ran at comp hill for years against countless other bikes. The bike was very,very dominate and would only loose to cr500's by a couple bike lengths.It would even beat 500cc bikes if rider weight was in favor of the 250 at all. The bikes comp was 10 to 1.
Larry Wiechman:
--- Quote from: BDI on September 15, 2009, 03:30:18 AM ---
--- Quote from: stewart on September 14, 2009, 12:03:12 PM ---
--- Quote from: BDI on September 14, 2009, 06:03:37 AM ---10:1 my freind, 10:1 8-)
--- End quote ---
brain do you mean 10to 1 on compression. i think jerry set that motor at 13.5
--- End quote ---
Yes Stewart That's what I mean. From my experiance with other bikes 10 to 1 makes for a very rideable bike. I think a full tilt Stewart engine with a comp of 10 to 1 would work awsome on the moto crosss track. My buddy had a 98 yz250, That 250 was the fastest production 250 I have ever seen. The power onset was as smooth as butter. The bike was ran at comp hill for years against countless other bikes. The bike was very,very dominate and would only loose to cr500's by a couple bike lengths.It would even beat 500cc bikes if rider weight was in favor of the 250 at all. The bikes comp was 10 to 1.
--- End quote ---
How are you figuring this 10:1 ratio? Full stroke, like a static four-stroke, or from when the exhaust port closes?
Dutch-K5 Fan:
--- Quote from: kaw rider on September 14, 2009, 07:03:55 AM ---jfab
A programmable ignition with switch on bars for change of timing curves. A curve for holeshots then a curve for smooth power curve.
--- End quote ---
I'm working on it.
Dutch
BDI:
--- Quote from: Larry Wiechman on September 17, 2009, 12:05:33 PM ---
--- Quote from: BDI on September 15, 2009, 03:30:18 AM ---
--- Quote from: stewart on September 14, 2009, 12:03:12 PM ---
--- Quote from: BDI on September 14, 2009, 06:03:37 AM ---10:1 my freind, 10:1 8-)
--- End quote ---
brain do you mean 10to 1 on compression. i think jerry set that motor at 13.5
--- End quote ---
Yes Stewart That's what I mean. From my experiance with other bikes 10 to 1 makes for a very rideable bike. I think a full tilt Stewart engine with a comp of 10 to 1 would work awsome on the moto crosss track. My buddy had a 98 yz250, That 250 was the fastest production 250 I have ever seen. The power onset was as smooth as butter. The bike was ran at comp hill for years against countless other bikes. The bike was very,very dominate and would only loose to cr500's by a couple bike lengths.It would even beat 500cc bikes if rider weight was in favor of the 250 at all. The bikes comp was 10 to 1.
--- End quote ---
How are you figuring this 10:1 ratio? Full stroke, like a static four-stroke, or from when the exhaust port closes?
--- End quote ---
Full stroke
wicked500:
nice pictures
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