Camshaft lobe design by Billy Godbold

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65-fastford
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Camshaft lobe design by Billy Godbold

Post by 65-fastford »

Great explanation of lobe design ... at least I thought so

https://www.youtube.com/watch?v=K1DFrWcvTuc
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Re: Camshaft lobe design by Billy Godbold

Post by CamKing »

Welcome to 1980.

For a top-tier racing engine, if the lobe profiles are not designed for a specific Bore, Stroke, Rod Length, port flow, and valve size, it's not optimum.
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Re: Camshaft lobe design by Billy Godbold

Post by Stan Weiss »

65-fastford wrote: Mon Sep 26, 2022 12:33 pm Great explanation of lobe design ... at least I thought so

https://www.youtube.com/watch?v=K1DFrWcvTuc
The 0.050" duration people will not like it! :lol: 50 HP difference! :shock:

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Re: Camshaft lobe design by Billy Godbold

Post by David Redszus »

65-fastford wrote: Mon Sep 26, 2022 12:33 pm Great explanation of lobe design ... at least I thought so

https://www.youtube.com/watch?v=K1DFrWcvTuc
Billy is a brilliant guy evidenced by a PhD in Mathematics. He has often served as a
design judge for the Formula SAE competition helping university student engineers
learn about engine and camshaft design.

That said, Billy has a tendency to dumb down his presentations for racers
since they usually lack the ability to comprehend the complexities of cam design.
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Re: Camshaft lobe design by Billy Godbold

Post by juuhanaa »

People think 4 valves are hard to improve and yet the same group of people are more than willing to change their cams.
A balanced person dares to stagger, and modify ports bigger
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Re: Camshaft lobe design by Billy Godbold

Post by SpeierRacingHeads »

I heard today that Billy isn't at Comp Cams anymore?
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Re: Camshaft lobe design by Billy Godbold

Post by CamKing »

SpeierRacingHeads wrote: Mon Sep 26, 2022 2:04 pm I heard today that Billy isn't at Comp Cams anymore?
He went out on his own, but I think he's still doing some work for Comp.
With how The Edelbrock Group is running things now, I think he saw the writing on the wall.
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Re: Camshaft lobe design by Billy Godbold

Post by mt-engines »

Stan Weiss wrote: Mon Sep 26, 2022 1:15 pm
65-fastford wrote: Mon Sep 26, 2022 12:33 pm Great explanation of lobe design ... at least I thought so

https://www.youtube.com/watch?v=K1DFrWcvTuc
The 0.050" duration people will not like it! :lol: 50 HP difference! :shock:

Stan
You could say the same about advertised duration guys...
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Re: Camshaft lobe design by Billy Godbold

Post by hoffman900 »

David Redszus wrote: Mon Sep 26, 2022 1:25 pm
65-fastford wrote: Mon Sep 26, 2022 12:33 pm Great explanation of lobe design ... at least I thought so

https://www.youtube.com/watch?v=K1DFrWcvTuc
Billy is a brilliant guy evidenced by a PhD in Mathematics. He has often served as a
design judge for the Formula SAE competition helping university student engineers
learn about engine and camshaft design.

That said, Billy has a tendency to dumb down his presentations for racers
since they usually lack the ability to comprehend the complexities of cam design.
This. He dumbed that way down, but still it’s good he does stuff like that.
-Bob
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Re: Camshaft lobe design by Billy Godbold

Post by hoffman900 »

CamKing wrote: Mon Sep 26, 2022 2:09 pm
SpeierRacingHeads wrote: Mon Sep 26, 2022 2:04 pm I heard today that Billy isn't at Comp Cams anymore?
He went out on his own, but I think he's still doing some work for Comp.
With how The Edelbrock Group is running things now, I think he saw the writing on the wall.
Yeah it appears he’s probably doing his old job but as a contractor (and probably making more money). Did he have an ownership stake in Comp prior to the buyout?
-Bob
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Re: Camshaft lobe design by Billy Godbold

Post by CamKing »

hoffman900 wrote: Mon Sep 26, 2022 2:23 pm Yeah it appears he’s probably doing his old job but as a contractor (and probably making more money).
I highly doubt he's making as much. The Edelbrock Group doesn't not see the same value in Design and Development as the old ownership did.
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Re: Camshaft lobe design by Billy Godbold

Post by RevTheory »

CamKing wrote: Mon Sep 26, 2022 3:06 pm
hoffman900 wrote: Mon Sep 26, 2022 2:23 pm Yeah it appears he’s probably doing his old job but as a contractor (and probably making more money).
I highly doubt he's making as much. The Edelbrock Group doesn't not see the same value in Design and Development as the old ownership did.
The new 1/4 r&d, 3/4 marketing budget model?
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Re: Camshaft lobe design by Billy Godbold

Post by juuhanaa »

how much value should be given to area rule? Last winter i had a exiting moments in calculus. 122cid 4 banger 240@seat and 7500rpm? :shock:

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A balanced person dares to stagger, and modify ports bigger
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Re: Camshaft lobe design by Billy Godbold

Post by Tom68 »

Stan Weiss wrote: Mon Sep 26, 2022 1:15 pm
https://www.youtube.com/watch?v=K1DFrWcvTuc


The 0.050" duration people will not like it! :lol: 50 HP difference! :shock:

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Re: Camshaft lobe design by Billy Godbold

Post by Stan Weiss »

mt-engines wrote: Mon Sep 26, 2022 2:15 pm
Stan Weiss wrote: Mon Sep 26, 2022 1:15 pm
65-fastford wrote: Mon Sep 26, 2022 12:33 pm Great explanation of lobe design ... at least I thought so

https://www.youtube.com/watch?v=K1DFrWcvTuc
The 0.050" duration people will not like it! :lol: 50 HP difference! :shock:

Stan
You could say the same about advertised duration guys...
That is true. I do wish that when Billy was talking about the different acceleration that he would of had some graphs / plots of those curves.

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