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andrews 26 cam in 95 build

Jack Klarich said:
Dial indicator set up against gears, rotate forward and back plus or minus and split the difference
Click to expand...

Thanks Jack . I get it now . I should check Youtube.
so you split the diffrence so lets say pushing the one gear back and forth . One way i get .001 and the other way I get .0005. the split difrence would be 0.0005 or 0.00025 ?
Thanks F.K.
 
stray dog said:
Jack,
I don't think you split the difference. Correct me if I'm wrong, but I think the backlash is the whole dimension.
Click to expand...

TIR total indicator reading, to be precise run forward stop run back add divide by 2 for TIR or just check per your way it does not matter a whole lot unless you want to be 100 percent JMO
 
Jack Klarich said:
TIR total indicator reading, to be precise run forward stop run back add divide by 2 for TIR or just check per your way it does not matter a whole lot unless you want to be 100 percent JMO
Click to expand...

backlash.jpg

Jack, are we talking about the same thing? I'm confused with the dividing thing.
 
Jack Klarich said:
Yeah, pretty much either way will get yo your reading, the TIR divide by 2 is a bit too precise for most it is more for critical lay out work:D
Click to expand...

Brother Jack, Brother Jack,

If you are indicating your pinion shaft and you are at .006 Total Indicator Reading you then divide by 2 to get .003 run out per side from the axis.

BUT nobody is asking for run out.

Bottom line is if they are asking for T.I.R dimension you don't divide it by two,
TIR is TIR.

The conversation was about measuring back lash in the gears. Keeping the pinion gear stationary, put a indicator on a tooth of the cam gear, rotate the cam gear and the reading on the indicator is the back lash. Again, no dividing.

Don't want to get into a spitting match here, but facts be facts :s
 
Photo of how to measure outer lash is attached. The setup is typical setup, there are other ways but the main thing is a solid mount for the indicator and the right angle of the indicator tip to the gear tooth. Rotate the cam gear and read the dial indicator; that's the lash.

Or, use Plastigage and run it through the pinion and cam gear.

It's not rocket science guys.
 

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dolt said:
Photo of how to measure outer lash is attached. The setup is typical setup, there are other ways but the main thing is a solid mount for the indicator and the right angle of the indicator tip to the gear tooth. Rotate the cam gear and read the dial indicator; that's the lash.

Or, use Plastigage and run it through the pinion and cam gear.

It's not rocket science guys.
Click to expand...

I think I will check both ways . I like the plasta gage idea

Thanks again all F.K.
 
stray dog said:
Brother Jack, Brother Jack,

If you are indicating your pinion shaft and you are at .006 Total Indicator Reading you then divide by 2 to get .003 run out per side from the axis.

BUT nobody is asking for run out.

Bottom line is if they are asking for T.I.R dimension you don't divide it by two,
TIR is TIR.

The conversation was about measuring back lash in the gears. Keeping the pinion gear stationary, put a indicator on a tooth of the cam gear, rotate the cam gear and the reading on the indicator is the back lash. Again, no dividing.

Don't want to get into a spitting match here, but facts be facts :s
Click to expand...

My total run out is .003 so I divide this by 2. so my Runout is actualy 0.0015?

F.K.
 
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