variable camshaft for sbc
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Joined: Nov 2002
Posts: 137
From: NY long island
I changed my mind mow im going with OldSStrokers idea to use oil activation. I will start off with a 2 way solenoid adn a small ~2" round piston. With a 5:1 arm, piston to cam i will only need .75" of stroke of the piston to change form high to low cam. Using a 5:1 arm will accieve 628 lbs pushing the cam i and out. ant thats with only 40 lbs of oil presure and thats more than enough. and i can make the change less noticible and smoth if i put a restrictor in the fill line. Another reason why im using the oil activation is because its way cheaper than electronic control being less than $50 for a general purpose solenoid valve.
How would i activate the solenoid i was thinking of using the rpm reading but what is it measured by with and electronic tach? Is it the incoming volts or a digital signal or other?
How would i activate the solenoid i was thinking of using the rpm reading but what is it measured by with and electronic tach? Is it the incoming volts or a digital signal or other?
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Joined: Oct 2002
Posts: 2,931
From: Upstate NY
Originally posted by turb0racing
I changed my mind mow im going with OldSStrokers idea to use oil activation. I will start off with a 2 way solenoid adn a small ~2" round piston. With a 5:1 arm, piston to cam i will only need .75" of stroke of the piston to change form high to low cam. Using a 5:1 arm will accieve 628 lbs pushing the cam i and out. ant thats with only 40 lbs of oil presure and thats more than enough. and i can make the change less noticible and smoth if i put a restrictor in the fill line. Another reason why im using the oil activation is because its way cheaper than electronic control being less than $50 for a general purpose solenoid valve.
How would i activate the solenoid i was thinking of using the rpm reading but what is it measured by with and electronic tach? Is it the incoming volts or a digital signal or other?
I changed my mind mow im going with OldSStrokers idea to use oil activation. I will start off with a 2 way solenoid adn a small ~2" round piston. With a 5:1 arm, piston to cam i will only need .75" of stroke of the piston to change form high to low cam. Using a 5:1 arm will accieve 628 lbs pushing the cam i and out. ant thats with only 40 lbs of oil presure and thats more than enough. and i can make the change less noticible and smoth if i put a restrictor in the fill line. Another reason why im using the oil activation is because its way cheaper than electronic control being less than $50 for a general purpose solenoid valve.
How would i activate the solenoid i was thinking of using the rpm reading but what is it measured by with and electronic tach? Is it the incoming volts or a digital signal or other?
Use a spring to hold cam in one position and actuator to move it to another. It "fails safe" to the baseling position, and only needs a one-way actuator.
Both of these ideas have been done before.
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