Cam Lobe Design
Cam Lobe Design
(OP)
I am in the process of designing a camshaft and need some help.
When I increase the flank radius of the lobe, the positive G's go up and the negitive G's go down.
I assume that the more positive G's, the more wear on the cam and stress on the valve train.
Fewer Negitive G's and the spring pressure required would be reduced.
The question would then be, where do i strike the balance.
This cam is for a V4 model engine designed by the late Bob Shores. He passed away before finishing the project so the drawings have been "not so good" so i want to verify everything before i build it.
Base circle = .350
Flank radius = .693
lift = .065
Duration = 260 (130 cam degrees)
Positive G force = 88
Negitive G force = -38
Any camshaft grinders out there willing to lend some wisdom?
Thank you!
Steve
When I increase the flank radius of the lobe, the positive G's go up and the negitive G's go down.
I assume that the more positive G's, the more wear on the cam and stress on the valve train.
Fewer Negitive G's and the spring pressure required would be reduced.
The question would then be, where do i strike the balance.
This cam is for a V4 model engine designed by the late Bob Shores. He passed away before finishing the project so the drawings have been "not so good" so i want to verify everything before i build it.
Base circle = .350
Flank radius = .693
lift = .065
Duration = 260 (130 cam degrees)
Positive G force = 88
Negitive G force = -38
Any camshaft grinders out there willing to lend some wisdom?
Thank you!
Steve





RE: Cam Lobe Design
RE: Cam Lobe Design
UD Harold
662-562-4933
brookshire@panola.com
Cheers
I don't know anything but the people that do.
RE: Cam Lobe Design
I don't think that will happen. This is just a model engine.
"Try this guy he is real knowledgeable about cam design"
I dont want to bother anyone off list. I am just looking for some basic guidelines. I will copy an existing lobe from a cam in the garage first. Just want to build something better than a triangle on a stick.
RE: Cam Lobe Design
RE: Cam Lobe Design
RE: Cam Lobe Design
http:
RE: Cam Lobe Design
Looks like some good reading.