DW 15 wausau.craigslist.org/atq/3820004406.html
977L sandiego.en.craigslist.org/csd/pts/3798969563.html
2 Ton pensacola.craigslist.org/grd/3858722204.html
Marx Cat toy boise.craigslist.org/tag/3838706974.html
D2 moseslake.en.craigslist.org/grd/3810269816.html
D2 rochester.en.craigslist.org/grd/3792019686.html
D2 fingerlakes.craigslist.org/grd/3846828720.html
D2 rockies.craigslist.org/grd/3813083471.html
D2 carbondale.craigslist.org/bfs/3780317616.html
D2 wenatchee.craigslist.org/grd/3787037111.html
D2 elmira.craigslist.org/grd/3846869638.html
D2 desmoines.craigslist.org/grd/3838918781.html
D2 twinfalls.craigslist.org/grd/3797944945.html
D2 rapidcity.craigslist.org/grd/3797781997.html
D2/D7 desmoines.craigslist.org/grd/3787537074.html
D2 brainerd.craigslist.org/grd/3822846295.html
D311 Genset helena.craigslist.org/grd/3773860887.html
Parts eastoregon.craigslist.org/grd/3834316446.html
D4 hyd tank winstonsalem.en.craigslist.org/grd/3793331338.html
D4 w/ loader greenbay.en.craigslist.org/grd/3795680207.html
D4 rapidcity.craigslist.org/for/3817084997.html
D4 parts nwct.craigslist.org/grd/3830900337.html
D4 parts albany.craigslist.org/grd/3847353976.html
D4 duluth.craigslist.org/grd/3843034869.html
D4 blade florencesc.craigslist.org/grd/3816297445.html
D4 redding.craigslist.org/bfs/3829031793.html
D4 lancaster.craigslist.org/grd/3857037612.html
pull grader richmond.en.craigslist.org/atq/3781902635.html

D6 chattanooga.en.craigslist.org/grd/3771556419.html
D6 pony motor stockton.en.craigslist.org/grd/3773032748.html
D6 huntsville.en.craigslist.org/grd/3799220899.html
D6 toledo.en.craigslist.org/grd/3796961454.html
D6 westslope.craigslist.org/bfs/3774491325.html
D6 erie.en.craigslist.org/grd/3746097524.html
Nice PTO erie.en.craigslist.org/grd/3746082833.html
D6 masoncity.craigslist.org/grd/3858098045.html
D6 medford.craigslist.org/grd/3746824689.html
D6 rails anchorage.en.craigslist.org/bfs/3807015316.html
D6 louisville.en.craigslist.org/grd/3787070685.html
922 kansascity.en.craigslist.org/grd/3777121680.html
922 nwks.craigslist.org/grd/3779815263.html
966 minneapolis.en.craigslist.org/hnp/grd/3770054920.html
15? crawler eastidaho.craigslist.org/fgs/3839725071.html
Grader kokomo.en.craigslist.org/grd/3749807331.html
112F kansascity.en.craigslist.org/grd/3849925878.html
112F ottumwa.craigslist.org/grd/3814357931.html
8T redding.craigslist.org/grd/3844923899.html
112 wichita.craigslist.org/grd/3787677273.html
140 minneapolis.craigslist.org/dak/bfs/3780813906.html
grader phoenix.craigslist.org/cph/grd/3830234513.html
9K anchorage.craigslist.org/cto/3814194993.html
12 stockton.craigslist.org/grd/3718396842.html

Here's another:
R5 peoria.craigslist.org/grd/3796715833.html

I must say that's a lot of caterpillars comen out of the wood work. Must be some good deals in the mix.

thanks for sharing,
Wendell

Dave, it looks like that blade is a bit to heavy for the R5 or the equalizier spring is broke.

I'd say the blade is a little heavy for the tractor. After lifting the blade, if you have to walk down the tracks like steps, then can eat your lunch in the shade under the sprockets, it usually means your blade is a little heavy. I think if the spring was broken, the sprockets would be on the ground, as would the radiator, too, likely!

I would probably be even better at making speed bumps with that tractor than normal. It is kind of hard to cut to grade when, upon moving the lever to raise the blade, the nose goes down four inches before the blade comes up, and vice versa!

Pete.

brackets mounted to far foword on track frame causing tractor to site heavy on front idlers. just my observation!

Zip, your much more of an expert on stuff like this than me, so I'm going to try to learn from you.

I would have thought that the bracket position wouldn't make any difference to how much lifting the blade would pry up on the track frames. It seems to me that when the blade is on the ground, the center of gravity (CG or balance point) of the track frames would be wherever it is. Let's assume it is roughly over the middle roller and for purposes of this discussion, lets not worry about how the tractor interfaces with this system. The blade CG will be somewhere forward of that, since almost all of the mass of the blade is forward of that.

The weight of the blade, however, will be spread between the cutting edge and the ends of the push arms. The cutting edge will be carrying most of the weight and transmitting that to the ground. The push arms are attached pretty near the CG of the track frames, so when the blade is on the ground there is little influence over the resting position of the track frames.

When the blade is lifted, the lift mechanism transfers all the weight of the blade to the track frames, some through more weight being on the push arm ends and most to the lift mechanism brackets. This lifting causes the weight of the blade to apply torque to the track frames since the CG of the blade is forward of the CG of the track frames.

Where I'm confused is, it seems to me that the design and attachment points of the lift mechanism relative to the track frame CG doesn't seem to me to make any difference in the torque the weight of the blade will place on the track frames. Once the blade is off the ground and all of its weight is supported by the track frames, I would have thought that the torque applied, and the tendency of the tractor to nosedive, would be constant as long as the CG of the blade system remains in the same relationship to the CG of the track frames.

Under my assumptions, it wouldn't matter whether you put the blade lift mounts clear out at the front end of the frames, clear out at the back end, put them in the middle or hung them on a pole beyond either of those, for that matter. The torque on the track frames, the lift of the sprocket and the nose dive of the idlers would be the same.

I'll agree that the position of the lift mechanism relative to the blade CG and its position relative to the push arm pivots will have a huge influence on the force applied to the pins and bushings within that mechanism, the wear of them and the required hydraulic pressure to lift and get the speed required.

Maybe I'm wrong in some of my understanding. I am, after all, just an accountant and not an engineer or an operator.

I'd be interested to hear your thoughts.

By the way, I hope your shoulder is feeling better. I'm sorry you got hurt, but I'm glad that it has allowed you to spend more time on here, at least.

Pete.

It does look a little nose-heavy... Agree with Pete that a setup like that could help anybody make a good motocross track. I wonder what the idlers look like carrying all that weight on the nose. It looks like everything is attached to the track roller frame, so the equalizer spring shouldn't be under any extra load, just some extra strain trying to keep the roller frames from wanting to do the splits.

weight over idlers blade is heaver then rear end of tractor trunions are towerd the rear not on cg causing it to lift the rear end up. old d8h's 6 roller frame did the same thing then they went to 7 roller frame. and i'm bar fare an expert its just the way it looks to me!