Drill rod sizes for Gordy'd "grizzly rods"

M

mofugly13

Guest
I am looking for information on the proper sizes of drill rod used to make the three sizes of grizzly indicator rods. I have seen the information before in the internet, and in at least one of the gunsmithing forums somebody posted photos and sized of drill rod they used to make their own. For the life of me I cannot find this information anywhere, I guess my goole-fu is weak. Can anyone help me out?
 
The bodies of the rods only need to be a little larger than the pilot hole of the bore bushings you plan on using... the body diameters are not a critical measurement other than they are smaller than the smallest bore...
 
I am not familiar with the "grizzly rods". However, I am familiar with the "Range rods" and "Indicator rods" that come out of Dave Kiff's shop. The diference between those 2 are the length and possition of the tapered portion of the rod. On the front of the caliber specific rod you attach a bushing that is fitted snuggly in the bore, the rod is smaller than the bore so the bushing acts as the guiding means. Further down the rod the taper comes into play, the rod tapers larger, until it is large enough that it wont fit in the bore, the rod self centers in the bore. what sticks out isw now tightly held at 2 points, the bushing, and the taper. One rod is used for barrels that already have chambers in them, the other is shorter and is used for barrels that will soon have a chamber in it. I use the range rods in centering up barrels in my spider attachment.

I don't have the grinder that would be required to make these high precision rods, but even if I did... I think I would rather be doing something else more productive, than attempting to make a rod that is already produced and is available for cheap.

Dave makes good stuff in that shop, I've never had to return a bad product to him, and he is right on time most offen.

I think you see what I'm getting at.

If you insist, MSC and Production Tool always have the drill rod I need.

Paul
 
My rods arrived a few minutes ago...

.265", .234", .204"
 
When Gordy's video came out there was no choice except to make your own. I used w-1 drill rod at least 12" long
13/64", 15/64", and 17/64" in dia. The rods are very handy also for checking bushing to bore fit.

You probably know this but if you spot it with a center drill then run a live center on the end of the rod when you turn it down to fit the bushing you'll have a more harmonious outcome.

James
 
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Thank you Dennis.
pbike, I understand what range rods and indicator rods are, and why it would be more practical to buy them, due to the precision involved in making them. But the way I understand grizzly rods to work, they really dont need to be perfectly straight, nor does the "nub" (someone tell me the technical term for it) even need to be perfectly concentric with the rod itself. It seems that if the nub is the correct diameter for the ID of the bushing to just slip on, and that the axis of the nub is parallel (doesn't necessarily have to be concentric, just parallel) to the axis of the rod, it will work just fine.

The diameters you guys gave me jive almost perfectly, much thanks.
 
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pbike said:
I am not familiar with the "grizzly rods". However, I am familiar with the "Range rods" and "Indicator rods" that come out of Dave Kiff's shop. The diference between those 2 are the length and possition of the tapered portion of the rod. On the front of the caliber specific rod you attach a bushing that is fitted snuggly in the bore, the rod is smaller than the bore so the bushing acts as the guiding means. Further down the rod the taper comes into play, the rod tapers larger, until it is large enough that it wont fit in the bore, the rod self centers in the bore. what sticks out isw now tightly held at 2 points, the bushing, and the taper. One rod is used for barrels that already have chambers in them, the other is shorter and is used for barrels that will soon have a chamber in it. I use the range rods in centering up barrels in my spider attachment.

I don't have the grinder that would be required to make these high precision rods, but even if I did... I think I would rather be doing something else more productive, than attempting to make a rod that is already produced and is available for cheap.

Dave makes good stuff in that shop, I've never had to return a bad product to him, and he is right on time most offen.

I think you see what I'm getting at.

If you insist, MSC and Production Tool always have the drill rod I need.

Paul
Click to expand...



Can you please advise me of there web site or contact detail as I live over the large pond, Im from Ireland..

Many Thanks

info@nicustomrifles.co.uk
 
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