The template is actually just a circle with 360 lines in it so I can mark my points. The resolution of the image is creating that illusion.

58 Ford Custom 300 - San Pedro, CA (So-Cal)

Good ideas and suggestions for easyissy.  By the way, the CAD template looks like one of the patterns on my kaleidoscope.  What's a fractal?  It seems to be too new a word for my 1977 crossword puzzle dictionary.

Charlie Burns Laton, Ca (South of Fresno)



BurnsRacing981@gmail.com

I was going to do that but the damper measures 6-9/16" diameter and the area to put a timing tape is only about 1/8" wide not enough room. Thanks for the suggestion though.

58 Ford Custom 300 - San Pedro, CA (So-Cal)

Jeez, get a timing tape for a small block Ford. If you measure the damper you will find one of them is close. The initial timing marks are almost perfect and the rest are really close enough for valve adjusting. Chuck in NH

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

Looks like a fractal.


Lawrenceville, GA

Here's what I plan to do. I drew up a template in CAD to help with the markings. I took the diameter of the damper I have (6-9/16") then divided it by 360 to get 1* marks all around. I can then mark my 90* marks for valve timing too.

58 Ford Custom 300 - San Pedro, CA (So-Cal)

Not really. Both ways can result in decimals, which are fractions of a whole number. Further, the conversion factor is only approximate so there can be some error in the conversion depending on just how accurate you want to be. Long story short, if you're comforable using centimeters, use centimeters, if you're comfortable using inches, use inches.


Lawrenceville, GA

If CURCUMFERENCE is 2 x Pi x r, where Pi is 3.14 and r = radius, can you simply drop the "2" and multiply Pi times d, where d is the diameter?

Is it best to do this sort of calculation in centimeters and convert it later to inches in order avoid fractions?

It's been a long time since geometry class for this old "C" student.

Brian

Cylinder Index = 84

Current Experiment = `57 Tbird, Grand Rapids, Michigan

Yes.  Dividing the circumference by 180 will give the spacing for two degrees.  I would consider just using the circumference divided by 360 though so you have the measurement for individual degrees.  With this value and the applicable multiplication factors, the damper can be appropriately marked not only in the initial timing range but also in the 35°-45° range so you can check your ‘total’ timing.

Lorena, Texas (South of Waco)

Thanks John, good idea. So should I just take the circumference of the damper then divide by 180 to get the 2* mark spacing? I'm no mathmatician I can draw somthing up in CAD which will be more accurate.

58 Ford Custom 300 - San Pedro, CA (So-Cal)