Scale Cat Twenty Two Dozer Ride On For My Son

[Dr Dave]

You are going to need a big sand box! Ha ha ha

Dave

 

[Iplayfarmer]

Very nice.

Have you decided what kind of lettering you're going to use.

Perhaps a name.

CAT 11
Cat 0.22
Halfcat
Microcat
Minipillar
MOUSE
ANT
Gnat 22

Kitten??

 

[CNC Dan]

you might need to add a tilt swich.
at least a ROPS.

 

[Depmandog]

At some point in the future, I bet your son will learn that his "toy" is really good at stripping sod...yours, the neighbors, their neighbors.

That pretty subdivision we saw in that YouTube...is gonna get trashed, and you know you will have to say with more than a bit of pride That's my boy! before you tan his bottom

Great job!!

 

[CliffordK]

Great Idea....

Just what you need for the Dozer... a RIPPER on the rear!!!!!!!!!!!!!!!!!

 

[CliffordK]

Have you decided what kind of lettering you're going to use.

Perhaps a name.

CAT 11
Cat 0.22
Halfcat
Microcat
Minipillar
MOUSE
ANT
Gnat 22

Kitten??

I missed that.
Or... simply

KIT

 

[dozerbuilder01]

So a little update. I haven't given up on it but I have taken a break from building. Spent some time showing it off to family and riding it around a bit because it's so much fun.

Here is another video.
Homemade Mini Caterpillar Dozer Second Run - YouTube

Now I've been working on the blade design. There were a fair amount of pieces that I didn't model in CAD and I just kind of built it as I went (hose routing, control handles etc). It worked out but I wasn't exactly happy with a few things even though I'm going to live with it. I'm running out of room fast, so I'm going to model every last piece before I resume building. I found parker fitting stp files online and I learned and easy way to draw hoses so it hasn't been too bad. Been a good learning experience actually.

As for the blade, I've decided to do hydraulic up and down with a da valve and hydraulic swivel with a electro-hydraulic valve (because of space). It will be a 42" wide blade (the dozer is 35" wide), will raise 9.5" off the ground and swivel a total of 50 degrees. I'll make some type of skid and/or plastic edge when plowing snow. It will not be spring loaded. I know that when the blade is raised it won't be flat but I just don't have the room or need for a 6 way blade. In all honesty this won't do much more work than just plowing snow. I have a small yard. I don't really know what I'm doing so it's the best I could think of considering the type of work it will actually be doing.

Here are a few pictures of where I'm at in the model.

I gotta say, it's been tough making everything fit. But it's a lot easier to change in the model than it is in real life. If I spend the time in the model now, the actual build should go real easy.

Thanks for looking.

 

[dozerbuilder01]

Very cool, I was thinking adjustable stops for the speed. Kids learn quickly and won't like slow for long. That thing looks like it would crawl up a tree which makes me think you need a roll cage and seat belt like the big ones. In black maybe.

As you'll see in the video I just posted, it goes a little too fast. I was shooting for power wheel speeds (2.5mph and 5mph, engine a little above idle and full throttle). With the pump specs and the underdriven pulleys, I calculated about 6.5 mph. So I'm either going to change the engine pulley or limit the throttle handles in some way. Starting out, it'd like it to go about 1mph for him.

 

[KubotainNH]

That is pretty quick. Looks like it's pretty smooth.

 

[CliffordK]

Are you modelling a Cat 22?

Many of them probably had winch operated blades. But, it never hurts to modernize a few things.

Do you have goals for what your kid may end up pushing around? He might get into less trouble with one-way hydraulics, and only hydraulic up on the blade. Perhaps even putting wheels under the ends of the blade so it will do less damage scraping across the lawn.