Scale Cat Twenty Two Dozer Ride On For My Son

kebo · Sep 11, 2012

94BULLITT said:
It looks good!

No, it definitely looks GREAT!!! Your son is going to have a lot of jealous friends! I bet he'll be able to make his college tuition just charging all of them (and their dad's) to ride on it lol.

kebo · Sep 11, 2012

94BULLITT said:
It looks good!

No, it definitely looks GREAT!!! Your son is going to have a lot of jealous friends! I bet he'll be able to make his college tuition just charging all of them (and their dad's) to ride on it lol.

xmoikan · Sep 25, 2012

your job is wonderfull. Im inspired in this site because of the people in here an their potentials

dozerbuilder01 · Sep 30, 2012

So I will have a good update soon. Slight design (and parts change) coming. Gearing up for Christmas time when I'm going to have a couple of days off from work to really knock some stuff out. Here is a little teaser pic until next week.

mjncad · Oct 1, 2012

Dozerbuilder spent some money at the waterjet cutting place.

Dr Dave · Oct 1, 2012

Very impressive build !!!

Dave

turnkey4099 · Oct 1, 2012

So that is how it was done! I spent 10 years at a pattern torch (Map/oxy) and could turn out really clean work on stuff up to 2" thick but nothing that good. It always had those little ridges on the cut surface.

Harry K

dozerbuilder01 · Oct 1, 2012

Actually, that's from a hi-def cnc plasma cutter. Looks better than I expected. I gotta guy that bought one a few months ago for his business.

mjncad · Oct 2, 2012

Well that HD CNC Plasma Cutter sure did a nice job. It sure looks like it was cut with water or a laser.

dozerbuilder01 · Oct 5, 2012

mjncad said:
Well that HD CNC Plasma Cutter sure did a nice job. It sure looks like it was cut with water or a laser.

I know. That's what I thought when I saw them. Hardly any finish work. I have another plasma guy that just has a plasmacam table. It won't do this.

So here's an update.

If you've followed this since the beginning, you know I bought a mower for cheap and took out the transmissions. Then after that, all I could do is worry about how long they were going to last and where I could get replacement parts or whole transmissions. It's what I get for being cheap. So after scanning ebay to find spares, one popped up. Ended up selling for a lot of $$. So I figured, screw it. I was up happy with the linkage configuration, the layout and of course the fact that if they fail, I'm screwed. So I listed them. Ended up making enough profit that I bought a brand new set from Surplus Center. And this will make the linkage, mounting and track frame all easier. And they are a standard mount for the most part.

So everything I've done up to this point wasn't a waste. I got valuable machining and design experience. And it won't take much to reset the frame. I avoided doing too much work in that area until I figured out what I wanted to do. So I have to cut off a few brackets and replace a crossmember. And I've been mostly working on the new design for the track frame which in the end will be a lot easier to build. And of course the old transmissions paid for the new ones. So no complaints there. Should have tried selling them sooner.

So I feel much better now.

dozerbuilder01 · Nov 7, 2012

So I've spent the past couple weeks cleaning and rearranging the garage (to make it easier to work in and to make space for a new tool), cutting a few things off the frame that were for the old transmissions, and redesigning around the new pumps and motors. I think I got it. I've also been modeling it in the cad program I use at work. Gives me practice since I don't use it at work everyday. Yet. And it's more powerful than what I was using.

Didn't spend time modeling all of the body pieces since I already made them. The main focus has been the track frame.

And now I started doing a little work.

Should start moving again now. Hoping to make a lot of progress during the holidays.

mjncad · Nov 7, 2012

What CAD program did you use to model the dozer?

cschulz · Nov 7, 2012

Isnt it amazing what levels we will go to in building our toys!!! Or toys for our kids. Love it!! Keep up the good work.

Chris

Bing187 · Nov 7, 2012

This is one of the coolest threads I've ever seen. You are one talented guy. The fact that you're using that talent to build something awesome for your little man is better still. Respect. Looking forward to seeing the finished product, with junior smiling on the drivers seat!

Mike

ericher69 · Nov 7, 2012

Bing187 said:
This is one of the coolest threads I've ever seen. You are one talented guy. The fact that you're using that talent to build something awesome for your little man is better still. Respect. Looking forward to seeing the finished product, with junior smiling on the drivers seat!

Mike

Sure that this is for the little kid? Or is it for the "big kid"?

Kudos either way and looking forward to a completed crawler.

Marcle · Nov 8, 2012

A very impressive project, yes I like it.

Looks better than the real thing

dozerbuilder01 · Nov 13, 2012

mjncad said:
What CAD program did you use to model the dozer?

Up until recently, I was using Autodesk Inventor 7. Now I'm using UG 7.5

ericher69 said:
Sure that this is for the little kid? Or is it for the "big kid"?

Kudos either way and looking forward to a completed crawler.

Maybe

I am enjoying building it. And I'll enjoy watching him riding it around destroying things.

Making some more parts. These are the tensioner rails. Just had to mill out the slot for the pillow block bearings.

Welded the motor mount block to the main frame rail. The frame rail is 2x6x3/16" tubing and the motor mount block is going to be 1.5" thick.

The block started at 2" thick (it's what I had in the old scrap pile so I had to do a little milling. (Still working on it).

That is all.

mjncad · Nov 13, 2012

Marcle said:
A very impressive project, yes I like it.

Looks better than the real thing
View attachment 287955

An albino Cat!

dozerbuilder01 said:
Up until recently, I was using Autodesk Inventor 7. Now I'm using UG 7.5

I didn't know Unigraphics was still around.

dozerbuilder01 · Nov 25, 2012

mjncad said:
I didn't know Unigraphics was still around.

I know. We get that a lot. But it works I guess.

Some days off from work let me get a few things done.

The motor has two pilot diameters so I decided to use both. I figured why not. It starts at 2.374" and drops down to 1.937" near the end. So I started boring with the biggest bit I had (1-1/8")

Then I switched over to the boring bar.

Lucky for me, I have an automatic feed on the quill, Once I started the larger diameter, I just set it up to stop at the depth I needed.

Finished product with the four 1/2"-13 mounting holes.

Fits up nice.

I've been anxious to try out the new addition to the garage. So I started cleaning up the front tensioner wheel.

I still need add a slight chamfer the edge to guide the wheels into the track but I'll wait until I have all of them ready. I don't feel like retramming the head after one wheel.

The workhorse of the garage.

That is all for now.