New Cams New Thread

[Claviger]

Here's the simulator's prediction (flywheel power). There are things it cannot account for, like valve spring rate change, vacuum crank case, megaphone shaped collector, so it won't be perfectly accurate. Extremely curious to see if the waves in my torque curve increase or decrease in amplitude.

The graphs also do not account for things like throttle response and what I call a "lazy engine", where you open the throttle and it does very little until cam profile matches pulse tuning (how it behaved previously below 3k RPM). I already know the lazy engine effect is better now.

June 19th Dyno with a failing cam chain and fubar intake valve clearances:

 

[Kevin frazier]

Here's the simulator's prediction (flywheel power). There are things it cannot account for, like valve spring rate change, vacuum crank case, megaphone shaped collector, so it won't be perfectly accurate. Extremely curious to see if the waves in my torque curve increase or decrease in amplitude.

June 19th Dyno with a failing cam chain and fubar intake valve clearances:

Neville Mufa jumping out the box, get you some

 

[Claviger]

First day of riding is done. I'll say this, it's better. It's better every RPM at every throttle position I've tried yet. Just better.

Smoother
More Part Throttle Torque
Less Vibrations
Better Noise

Just plain better.

 

[breeze]

First day of riding is done. I'll say this, it's better. It's better every RPM at every throttle position I've tried yet. Just better.

Smoother
More Part Throttle Torque
Less Vibrations
Better Noise

Just plain better.

guess I will see you next week on way to Leakey then with bull?

 

[Claviger]

Yep!

 

[Claviger]

A good read:

Understanding compression on a pump gas street motor - Engine Masters

 

[Gerald]

A good read:

Understanding compression on a pump gas street motor - Engine Masters

Was a good article to read, but most of this was what everyone was working for back in the sixties and seventies, yes I'm that old.

 

[Claviger]

Yes, Vizard's info is old, but it's still pertinent. About 3/4 of it is, I think, fairly common knowledge at this point, but there are some nuggets of info in the article that directly related to the R3.

 

[Tripps]

Good explanation of static vs dynamic, thanks

 

[Gerald]

Yes, Vizard's info is old, but it's still pertinent. About 3/4 of it is, I think, fairly common knowledge at this point, but there are some nuggets of info in the article that directly related to the R3.

I wasn't trying to down play the story, it's still relevant to todays issues of making power and innovations. For me, it's sad to see many of the speed manufacturing companies gone ex. Crane, Iskyderian, Chet Herbert, and many other of the pioneers. I guess blame the millennials, that's what everyone does. ( humor) had my say and live at a great time.