texas speed camshafts
Yes. We order all of our cores gun drilled
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They are gun drilled simply to make the camshaft lighter. The advantages of lighter rotating mass most of you guys know. This helps in that respect.
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Trending Topics
Learn something new every day. I sense some sarcasm in your reply so here's some reading for you just in case.
https://physics.stackexchange.com/qu...e-diameter-o-d
https://physics.stackexchange.com/qu...e-diameter-o-d
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Verdad Gallardo Sorry if I took it that way. Just used to Internet know it all keyboard warriors lol. Most of the time I refrain from posting anything because someone always has to argue. Gets old ya know. Sorry if I took it the wrong way!
Learn something new every day. I sense some sarcasm in your reply so here's some reading for you just in case.
https://physics.stackexchange.com/qu...e-diameter-o-d
https://physics.stackexchange.com/qu...e-diameter-o-d
"This means a hollow cylinder is stronger than a rod of equal mass and the same material. A hollow cylinder with a bigger inside diameter is better. In the limit x→1x→1 the hollow cylinder is twice as strong. Note that this limit isn't physically viable as it would be an cylinder with infinite radius and infinitesimally thin wall."
The key as I understand this based on what was written in the link is a hollow cylinder of equal mass is stronger than a solid cylinder of the same mass. If we have 2 pounds of steel we can make a stronger 2 pound hollow cylinder that is say 20 inches long than a 2 pounds solid cylinder that is say 20 inches long. The 2 pound solid cylinder will have to be of smaller diameter than the 2 pound hollow cylinder.
It didn't say a hollow cylinder of the same diameter is stronger than a solid cylinder of equal diameter despite that being the topic heading.
I'm open to correction...
Removing mass by gun drilling the cam is good for performance since we have less mass to rotate.
LOL! Internet know it alls you say?
Open mouth, insert foot.
Arrow manufacturers used this science toward the end of the aluminum arrow erra. Fatter, thinner wall arrows flew faster in some cases without giving up due to side force. More surface area, I'm sure took some of that back but I guess not all.
Open mouth, insert foot.
Arrow manufacturers used this science toward the end of the aluminum arrow erra. Fatter, thinner wall arrows flew faster in some cases without giving up due to side force. More surface area, I'm sure took some of that back but I guess not all.
TECH Senior Member
Joined: Jun 2016
Posts: 22,298
Likes: 3,619
From: Central Cal.
Mechanical engineer weighing in, the study says the same MASS. Let's say the solid core cam is 1 inch diameter. A gun drilled cam of the same MASS will end up having a larger diameter (for purposes of argument) let's say 1 1/4". The 1 1/4" camshaft will be stiffer than the 1" camshaft.
A solid 1" camshaft will be stiffer than a 1" hollow camshaft but the 1" hollow camshaft will have less MASS. When you look at a shaft in twist the stress at the center is zero and the highest stresses are on the outside surface and the stresses follow a linear curve. That is why you take material out of the center with minimal loss of stiffness, but there will be loss.
A solid 1" camshaft will be stiffer than a 1" hollow camshaft but the 1" hollow camshaft will have less MASS. When you look at a shaft in twist the stress at the center is zero and the highest stresses are on the outside surface and the stresses follow a linear curve. That is why you take material out of the center with minimal loss of stiffness, but there will be loss.
TECH Senior Member
Joined: Jun 2016
Posts: 22,298
Likes: 3,619
From: Central Cal.
Not really. It's spinning in a "cushion" of oil, and being pretty much a straight shaft (as opposed to a crankshaft), there are no imbalance forces "tossing" or stressing it around. If anything were hard on bearings it would be a crankshaft, with reciprocating forces galore, compared to a cam pushing a spring-loaded valvetrain, which is far easier on bearings.