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Originally Posted by johnjzjz
i am involved building a 1921 board track V Twin harley and it has that type spring they were interduced as early as 1909 i believe to the performance buss they are new but in 1914 harley with 30 lbs of closed spring pressure on the valve was racing around wooden tracks at 115 MPH the fastest car @ the time was around 25 MPH and max speed in a fighter plane was 65 in a dive hahahahaha jz
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Cool facts! I recently saw a show about those bikes and the peole that drove them. They had some pretty big "man parts" to ride those things with nothing more then a leather helmet!
Your probably right, I really don't know how long the springs were around for car engines, I only recently starting hearing about the Beehive/Conical springs as an alternative to having to machine the heads to accept springs that can handle over 550 lift on the LT1 heads.
John
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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