Panhead rocker rebuilding

[kitabel]

Does anyone know the rocker pad radius?
There don't appear to be any tools that actually grind a specific curve, they just drag the pad across a grinding wheel.

[steinauge]

Could you not make a radius gauge from a good rocker?

[john HD]

does anyone have an unused one that could be measured?

john

[Cotten]

I often wondered if any two were the same.

....Cotten

[JR JOHNSON]

hi kitabel, here in Oregon,we use baisley high performance,ph# 503-286-4980. talk to wess,or dan.they restore all types of rockers,very nice people to,look up there web site.they probably will answer your question over the phone.hope this helps....with respect.....JR

[kitabel]

There doesn't appear to be much science involved that I can detect. Both the Sioux and Snap-On tools sweep the pad across a wheel, and the result depends on the length of the rocker arm, how much pressure you apply, and how fast you move it.
The explanation of the radius is:
1. "the pad radius is the long (valve-side) lever arm length", but (if true) why are there so many shorter exceptions?
2. "the radius is the valve lift" (no reason given)
3. "as long as it doesn't present an angle to the stem it's not important"

[kitabel]

Tried them, no answer.

[NightShift]

Dear Kitabel,
Those explanations sound like they came from Washington, DC! I thought a angle to the stem was on purpose to make the valve spin. In real life aint it a whole lot better to take a sanding roll and follow whatever arc you found until the booboos are gone? And when the hard layer is gone whenever that is pitch it?

R'spectfull,

[kitabel]

angle to the stem was on purpose to make the valve spin

Huh?
Missed that part?

[NightShift]

angle to the stem was on purpose to make the valve spin

Huh?
Missed that part?

Dear Kitabel,
Its just like putting spin on a volleyball. You cant just slap it flat you gotta hit it with one part of your hand before the other and thats angle. It needs "english" on it.
Suppose your rocker pad is absolutely perfectly square to the valve cap it might maybe not spin atall!
Or is that a good thing?

R'spectfully,

[kitabel]

It is perfectly square.

[john HD]

kit,

i checked the knowledge base to see if there was a blue print, but no luck. thinking you could measure off that.

i have to believe one of the members has a new unused one somewhere.

john

[Panacea]

This is a used rocker sitting in it's block with the rocker tip resting even with the bottom of the block. The back side of the radius is even with the point of a bic pen, about 3/16". I don't have any new ones but this one is real smooth...Mike

[StueyC]

Looks like Nightshift was right then.

StuartC

[amiabledave]

I have 4 and measured them all with a radius gauge..With the photo of the pen point as a starting point to 180 around the pad is 1/2 inch