Walk behind crawler mower project

Recently, one of my mowing customers gave me a self-propelled walk mower, and, in order to gain more traction, I put spikes on the drive wheels. I do have more traction now, although, since it would just be a matter of time before I started tearing up sprinkler heads, I've decided to put crawler treads on my mower wheels.

Today, I went down to the local Tandy leather craft store, and purchased a leather belt strip. Then, I went to the Home Depot, and got some aluminum strap and angle, some bolts, nuts, and a drill bit.

What I have in mind is to use the belt in a continuous loop as my hinging material. I will use the aluminum angle on the inside to wrap around the wheels, thereby keeping the belt on track. I'll use the aluminum strap on the outside, to provide me with stiff sections, which will flex only at the hinges. I would have gotten aluminum U-channel, had it been available. I still would have needed the aluminum strap, though, to hold the leather down flat all the way to the edges of each section.

Well, I now am left with the task of hacksawing what for me is a fairly large amount of aluminum, although I have just made a realization which has now brought a smile to my face. The wheels of my mower are, of course, already traveling at a fairly low speed in relation to the crank. The wheels, in fact, have speed reduction gears inside of them. Well, if I fit the rear wheels into a V, and then set the front, drive, wheels onto a rotating drum, I could then bring the speed down even more.

What I am leading up to here is that I have decided to do a power-take-off from my mower's drive wheels, and then I will use it to build a power hacksaw for cutting the metal for the tracks. So, I guess that makes the power-take-off the next thing for me to do. I would appreciate any comments which might be made about this crawler project.

Mike Mandaville Austin, Texas

Reply to
MikeMandaville
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Tell me how long you need the tread diameter to be, and Ill dig out some double sided timing belts or cogged belts with the features on both sides. Sure be a hell of a lot easier doing this than with leather.

Gunner

Reply to
Gunner

While I realize these are not available in your locale, some snowblowers use rubber tracks that seem to work well. Perhaps you could find something on eBay as far as one with a non-working motor or thrower section that'd be adaptable? (I'm guessing buying new replacement parts would be cost prohibitive). --Glenn Lyford

Reply to
Glenn Lyford

Hello again, Gunner.

I probably will eventually design some sort of rubber track system, for a number of reasons. For one thing, rubber would be more gentle towards my customer's lawns than metal. Also, I do think that a cogged belt system would be a good choice, since the cogs, in this application, would obviously be treads, either inside, outside, or both. My mower wheels are 1 3/4" wide, and I doubt that you would have any belts which are this wide, although, what I could do is to attach more than one belt side by side against a backing with some sort of adhesive.

Right now I am pressed for time, though, because although I have not yet run over a sprinkler head with a drive wheel spike, I think that it is just a matter of time before I do so, and I also am convinced that I will be able to put something together quickly which will work temporarily while I continue to design a more satisfactory system.

Mike Mandaville Austin, Texas

Reply to
MikeMandaville

Actually, I have them 30" wide Many of them are the "tubes" of material you simply cut a belt of whatever width you wish from. Belt length is actually the diameter of the "tube"

Just keep it in mind.

Gunner

"The entire population of Great Britain has been declared insane by their government. It is believed that should any one of them come in possession of a firearm, he will immediately start to foam at the mouth and begin kiling children at the nearest school. The proof of their insanity is that they actually believe this." -- someone in misc.survivalism

Reply to
Gunner

Is there a reason not to use wider pneumatic tires?

Ron Thompson On the Beautiful Florida Space Coast, right beside the Kennedy Space Center, USA

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The ultimate result of shielding men from the effects of folly is to fill the world with fools.

--Herbert Spencer, English Philosopher (1820-1903)

Reply to
Ron Thompson

I question this also, my experience with tracked vehicles is that they tear up the grass while turning.

Lane

Reply to
Lane

Hello, Glenn.

Snowblower tracks have proven to be popular among those who build models of crawler-tracked vehicles. For example:

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By the way, yesterday, I went to Toys R Us, in search of a model of a tracked vehicle, to serve the purpose of providing me with some inspiration, and I am happy to say that I did not walk away disappointed. What I have now is a toy plastic dozer which weighs in at a hefty four pounds. I was curious about why this thing would weigh as much as it does, until I purchased some batteries, and turned it on. In addition to some authentic pre-recorded sound effects, this little fellow also has a built-in vibrator! Whoever designed this model had a lively sense of humor.

Mike Mandaville Austin, Texas

Reply to
MikeMandaville

Clever. You might have missed an exchange between Rusty and myself, but he's modeled an M4 and Russian T-34 tank including building the tracks.

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tracks on a Struck look pretty to easy to manufacture DYI too.
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Oh, and our HomeDepos (rental area) have self propelled, tracked, multi-tools sitting out front, you might be able to just buy off the shelf tracks.

Joel. phx

Reply to
Joel Corwith

Hello, Ron.

I was assuming that the tires on my wheels were probably not removable, although I didn't really know this for sure, and, since my drive wheels have gears in them, this is an option which I had not actually considered. I checked my tires today, though, and they are indeed removable. The tires which I have now have minimum clearance with the deck, though, so I would need to put on a longer axle to make it all work.

Mike Mandaville Austin, Texas

Reply to
MikeMandaville

Hello, Lane.

Okay, you have me curious now. What sort of tracked vehicle were you using on grass? Inquiring minds want to know.

Mike Mandaville Austin, Texas

Reply to
MikeMandaville

Mike I wasn't using it, but I saw a Bobcat with tracks installed tear up a lawn. The very nature of a tracked vehicle turning means that a portion of the inner track has to turn in place, meaning sideways motion. Of course I could be completely wrong. Anyone else have more experience than I.

Lane

Reply to
Lane

Possible traction problems - For a fun ride try coming off a golf green on a mower (heavy dew - three wide slick tires) and getting on the wrong side of a loooong slope. Ya don't stop until you get to the bottom (or hit something that won't move).

Once upon a time a long time ago a friend asked me to help him with a little chore. It consisted of torching off a portion of the grousers on a D8 Cat. My job was to drive the damn thing forward as the cutting progressed. Finally the time came to do the other side and I was instructed to turn the Cat around. Now I was, at that time, working on a golf course and turf was kind of sacred. If one turns a tracked vehicle *very* carefully the damage is minimal - even on grass. In fact the tracks tear up less than if they were on bare ground - and this was on a pasture. To make a long story longer - It took me the proverbial 40 acres (not an exaggeration) to turn that sucker around. My friend watched patiently (?) and then suggested that my assertion that I

*could* run a Cat was a tad stretched. I didn't do any damage to that pasture! Never drove a cat again either. Regards. Ken.
Reply to
Ken Davey

Hello, Joel,

I had been to Rusty's site before, though not the Struck site. Can you describe the multi-tool for me?

Mike Mandaville Austin, Texas

Reply to
MikeMandaville

Imagine the front 1/2 of a tractor with a platform on the back. You stand at the controls and have every option bucket, auger (other things I can't think of at the moment) which attach to the arms. Sort of a mini-bulldozer that has all the accessories like a bobcat,... on tracks, only you stand at the back of it instead of sit in it. They had a large one and a smaller one 'bout the size of a large garden tractor. If I hit the HD this weekend (like that won't happen!) I'll try to get a name or what to call it to search for a picture.

Joel. phx

Reply to
Joel Corwith

Hello again, Lane.

If necessary, I'll just build a half-track. When I turn, only the rear wheels are touching the ground, of course. With a half-track assembly up front, I would have more weight to lift, naturally, but I've already decided to put an extension on the handle, which is something which I've done before, and which, of course, will give me increased leverage. My mower has a lightweight 3 1/2 horse engine, by the way, with lots of low-end torque.

Mike Mandaville Austin, Texas

Reply to
MikeMandaville

Joel,

Okay, I know what you're talking about now. In fact, I saw a model of one of these things just yesterday at Toys R Us. The entire assembly was designed to be carried on the back of an action figure, sort of like a back pack. The real thing would be too heavy for this, I'm sure. It had an augur, and a back ho, and I think a few other accessories as well.

Mike

Reply to
MikeMandaville

Hello, Ken,

Great story! We have saint augustine turf around here, which throws out lots of long stringers on the surface of the ground. The stringers then send down roots, helping the grass to establish itself where no grass has gone before. Well, of course, the one-inch spikes on my drive wheels just love to tear out those stringers! I'm learning to take gradual turns now, because of the spikes, and also to accelerate gradually. I get minimal tear-out now, but, of course, I just won't be satisfied until I have optimum traction. Maybe I'll just install a seat up above the engine. I've seen riding mowers which are rated as far down as four horsepower. I only weigh about 120. I could put my feet on the ground, and lift up the front to turn, until I came up with a more satisfactory turning solution.

Mike

Reply to
MikeMandaville

material you simply cut a belt of whatever width you wish from. Belt length is actually the diameter of the "tube"

over a sprinkler head with a drive wheel spike, I think that it is just a matter of time before I do so, and I also am convinced that I will be able to put something together quickly which will work temporarily while I continue to design a more satisfactory system.

Gunner,

Being able to cut the belts/tracks to the designed width will certainly be an advantage, since this should insure that the cogs will be properly lined up, so as to be able to grab the matching cogs on the pulleys/crawler-wheels. I probably will be getting in touch with you later about this.

Mike

Reply to
MikeMandaville

I have a Kobelco SK007 mini excavator, rubber tracks, and it chews up lawn when turning in its own length. It is much heavier than a lawn mower at 700 kg so it probably does more damage. Great machine for its size, for sale in Perth, W Oz area. Alan in beautiful Golden Bay, Western Oz, South 32.25.42, East 115.45.44 GMT+8 VK6 YAB ICQ 6581610 to reply, change oz to au in address

Reply to
alan200

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