widening rims and grinder discs

kennell · Sep 22, 2011

I decided next year i want to pull my 766 at our local tractor pull. I found a set of worn out radials, and now i busy widening rims to 20 inches.
I used about 12 grinding discs on the first rim of differebt brands. My question is does it pay to buy Walter grinding discs or are the cheapest the best way togo? Thanks Kent

Janicholson · Sep 22, 2011

Cup style grinding wheels designed for the rpm and arbor will save much grief. More material, better position of grinding surface, longer life. Jim

mkirsch · Sep 22, 2011

I've found that certain disks foul up more quickly than others.

For instance, the cheap Harbor Freight disks seem to foul up and stop cutting VERY quickly; you get lots of sparks but very little metal is removed even if you horse down on the grinder with all your strength.

The ones from Home Depot are MUCH better. They are labeled "3X" or something like that. They just cut and cut and cut until they're worn to a nub.

Even better for smoothing metal are the flap disks.

sflem849 · Sep 22, 2011

Walter stuff is darn good.

36F30 · Sep 22, 2011

If you have an industrial supply(Fastenal) close see if you can find Metabo cutoff wheels and grinding discs. The Super Slicer II cutoffs are great and their grinding wheels are the best I have found, very aggressive cut. German made stuff.

buzzin duzzin · Sep 22, 2011

why 20" ? if tires are 20.8 x38 rims should be 18"x38" ask local welding shops about grinder wheels

heavyhaulertoo · Sep 22, 2011

if you intend to put tubes in, wrap the wheel with duct tape over your wells, this will keep them from tearing up the tubes.

scotc · Sep 22, 2011

A lot of tractor pullers run wider rims than the tire calls for. I don't know that it helps, or how it is supposed to help, but they claim it does.

tractorsam · Sep 23, 2011

I spend the money and buy the Walter discs. They are the best I've found and they while they seem to last longer they also work much better while they're at it. Sam

sflem849 · Sep 23, 2011

(quoted from post at 19:40:47 09/22/11) if you intend to put tubes in, wrap the wheel with duct tape over your wells, this will keep them from tearing up the tubes.

Another common practice is cutting a band out of an old tube to line the rim. It fits on there nice and tight and is heavy duty.

(quoted from post at 20:07:05 09/22/11) A lot of tractor pullers run wider rims than the tire calls for. I don't know that it helps, or how it is supposed to help, but they claim it does.

It makes the tire have a larger footprint. It helps.

kennell · Sep 23, 2011

Thanks Guys for all the imput. After i get them blasted and painted, i plan to try to mount them tubeless. Not sure if it will work but nothing to lose. I can always put tubes in if they won't seat. I'm heading to the city today, and i'll get some Walter and the German ones from Fastenal, and the Home Depot ones and try them on the second rim. Thanks Kent

kennell · Sep 23, 2011

Jim: Thanks for commenting. Where do i get this style gringing discs? Can you send me a picture? I'm not familiar with them. Thanks Kent

Janicholson · Sep 23, 2011

Black & Decker/DWLT DW8311 4-1/2" 36G Flap Disc
Is one great style
Rival 4" Medium 5/8"-11 Brazed 50grit Flat Cut/Grind Wheels
Two sources.

Jim

ForeverRed · Sep 23, 2011

Kennell,
The disc conversation aside, nice job on the rim pictured! Want to share your process? Did you rob the extension section from another rim or did you have a piece rolled or do it your self? I am wanting to do something similar and wondering how to go about it and keep it all straight and parallel.
FR

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