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Snowcat Restoration & Modification Projects Forum Major Restorations, Upgrades, and Non-Stock Snowcat Modifications

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Old 12-06-2017, 06:52 PM
Tigdim Tigdim is online now
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Default New guy here, with questions.

Hello all,

I am new to these tracked machines and this forum. I always thought these were designed only to be used in snow as trail/ski hill groomers, not for use all year.

Then a few weeks ago I was researching vehicles for steep terrain, and came across some photo's of j5's and muskegs. Fast forward a few weeks and now I am on here looking for more information.

My reason for researching steep terrain vehicles is that the farm I hunt and cut firewood on has some very steep hills/bluff's. Think 70% grade. (we don't go on those except on foot) And a few areas 4 wheelers are tricky to get up out of with a single rider, putting a deer on the front rack helps a-lot. Can't even load the back of the ranger with un-split rounds and make it up the hills, much less pull a log or a trailer full of rounds with it. (40 or 50% grades??? have to go measure now)

Looking for a machine that can get in and out of the trails discussed above moving a log or 2 using an arch or possibly winching the log butt's up on to the back of the machine. Think J5 ram skidder.

First question, Anyone know the uphill downhill rating of the J5's? (www.safetyoneinc.com PDF for the J5 does have this spec listed ... unless I just missed it.)

2.) If the information I have found is correct, sprocket should be 11 tooth measuring 5.25" tooth to tooth, giving a total diameter of slightly more than 18 3/8". Is this correct?

3.) Anyone know the actual drive diameter of the sprocket? Or even just the tooth height?

Then I can subtract 1 tooth height from the full diameter of the sprocket to get the diameter at 1/2 the tooth height. Should be accurate enough for calculating speed and drawbar pull. (thinking or re-power an old body/tub, with hydrostactic drive, sort of like discussed here. )

http://www.forumsforums.com/3_9/showthread.php?t=46397

I look forward to becoming part of the community,

Aaron
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  #2  
Old 12-06-2017, 08:00 PM
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Default Re: New guy here, with questions.

MacGyver would make a slope degree measuring tool with a Protractor, string and a straw.
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Old 12-06-2017, 09:23 PM
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Default Re: New guy here, with questions.

Here is a J5 sprocket, it will fit right over a small torque hub
Normal pitch on a J5 is 3.75 but thatís because of the drop center cleat changes the diameter of where the belts are.
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Old 12-07-2017, 12:17 PM
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Default Re: New guy here, with questions.

what is the bolt pattern for the J5 sprocket?

I assume, I will have to make an adapter plate to adapt from a torque hub to the sprocket, correct?
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Old 12-11-2017, 12:13 AM
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Default Re: New guy here, with questions.

Quote:
Originally Posted by Tigdim View Post
what is the bolt pattern for the J5 sprocket?

I assume, I will have to make an adapter plate to adapt from a torque hub to the sprocket, correct?
Not with the correct torque hub just drill the pattern into the sprocket we normally drill the holes larger and Bush them for a larger contact area, then make a outside plate to match

This picture is not a J5 sprocket but the center is the same size and these are mounted on a torque hub. This is a Muskeg flat track sprocket that we make.
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Old 12-14-2017, 07:00 PM
Tigdim Tigdim is online now
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Default Re: New guy here, with questions.

Thanks again for the reply's and good information. Now for more questions.

What is the full diameter of the tires on J5's?

What is the depth and width of the center section, the "Tub" of the J5? I want to figure out what engines will fit. ( leaning towards 4 cyl turbo diesel; cummins 4Bt, Isuzu, or Perkins equivalent. Depends on what I find for the right price when the time comes.)

I am/will be in the process of drawing up a frame/Tub just for fun to see how I want to lay everything out. Cab, engine, winch, forestry blade, and Plow. I will post up some screen shots when I get it further along.

Depending on how things progress I may even go with hydraulic steering similar to a skid steer. But that will depend on the condition of the differential and trans when I get a project machine.

If someone has a digital copy's of the J5 manuals and is willing to share that would be much appreciated. I don't really care what years just looking to get a better idea how everything is laid out. PM me and I will send you my email.

Thanks again,
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Old 12-15-2017, 01:34 PM
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Default Re: New guy here, with questions.

For the steep terrain I would think the longer muskeg would be a better choice. One has to remember as a 2 track machine pitches and rolls over an obstacle it will change the angle enough to start an endo.
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