Scale Cat Twenty Two Dozer Ride On For My Son

cschulz · Dec 24, 2013

Thats a first great idea but look at what you can imagine without the stock muffler. It may give you the room to run something up thru the hood.

Just a thought,Chris

GLyford · Dec 27, 2013

I'd say both:

A bunch of the guys trying to quiet down generators user a deflector that screws on to the regular muffler (at the four threaded holes we see in yours) as a starting point to weld on another exhaust pipe and muffler, either from a compact car or small tractor. Some autoparts stores have 90 and 180 degree bends of exhaust tubing in various sizes, might make for a little cleaner look than the cast iron elbow...?

Deflector style some people start with:

Tractor supply has flapper caps down to 1-1/2", and even if that's too big you could look at what they have and base yours on that.

I'd suggest leaving a way to allow for a little flex and expansion in the exhaust if you add another bracket, to help keep the welds from cracking or busting off the original muffler. Something like one of the universal muffler hangers that uses a rubber strap might work.

JDskidder · Dec 27, 2013

I saw this book in the store yesterday and there's an International (20?) dozer that looks just like this one. Beautiful photos throughout, but there's a good view of the muffler you might want to see.

Everett

Beautiful Tractors: Rick Mannen: 9781908005519: Amazon.com: Books

ericb2400 · Dec 27, 2013

Not being the safety police or anything, just a concerned parent. Something to keep in mind, this is for a child. It might be better to keep the exhaust concealed under the hood and exit under the dozer. That way there would be less chance for a youngster to get burned.

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CNC Dan · Dec 27, 2013

ericb2400 said:
Not being the safety police or anything, just a concerned parent. Something to keep in mind, this is for a child. It might be better to keep the exhaust concealed under the hood and exit under the dozer. That way there would be less chance for a youngster to get burned.

But more chance of CO poisoning.
I'd go with a doubble wall on the stack/muffler.

Motts · Dec 27, 2013

I'd go for the stack pipe and flapper. As far as the safety concerns, a child old enough to operate the dozer is old enough to know an exhaust is hot. If not, he'll learn the by experience the first time they touch it. I don't mean to sound harsh but you cannot protect a child from everything and experience is the best way to learn. Like when my dad told me not to touch that electric fence wire and i did, once.

bindian · Dec 27, 2013

Motts said:
I'd go for the stack pipe and flapper. As far as the safety concerns, a child old enough to operate the dozer is old enough to know an exhaust is hot. If not, he'll learn the by experience the first time they touch it. I don't mean to sound harsh but you cannot protect a child from everything and experience is the best way to learn. Like when my dad told me not to touch that electric fence wire and i did, once.

I agree with you Motts. Sometimes the school of hard knocks teaches the most lasting lessons.
hugs, Brandi

Scooter78 · Dec 28, 2013

I learned about those electric fences the same way! My arm still tingles when it's going to rain.

dozerbuilder01 · Dec 31, 2013

Steelhog said:
Beautiful workmanship! I noticed a compound on top of a rotary table. The math to do offsets for points of rotation and cutter diameter comp takes some talent. Thank goodness CNC came along not long after I left tool & die school. Why not delete the pepper pot muffler, fab a simulated oil bath and then run the stack straight up through the hood? Or the air cleaner off a Ford 8N or NAA would be about the right size as well. For that matter you might be able run the exhaust down and then back up on the left size like the original. Some of the orchard models used louvered side panels which would hide it all.

The rotary table has been fun learning to use. Really makes you think. CNC would have been a lot easier.

GLyford said:
I'd say both:

A bunch of the guys trying to quiet down generators user a deflector that screws on to the regular muffler (at the four threaded holes we see in yours) as a starting point to weld on another exhaust pipe and muffler, either from a compact car or small tractor. Some autoparts stores have 90 and 180 degree bends of exhaust tubing in various sizes, might make for a little cleaner look than the cast iron elbow...?

Tractor supply has flapper caps down to 1-1/2", and even if that's too big you could look at what they have and base yours on that.

I'd suggest leaving a way to allow for a little flex and expansion in the exhaust if you add another bracket, to help keep the welds from cracking or busting off the original muffler. Something like one of the universal muffler hangers that uses a rubber strap might work.

I ended up doing that. I bought a piece of 1-3/4" j pipe from jegs and a cap from farm and fleet. Made a flange like the picture. Problem is, vibration was too harsh and the screws pulled out very quickly. I will have to make an additional mount. I'll figure it out later.

ericb2400 said:
Not being the safety police or anything, just a concerned parent. Something to keep in mind, this is for a child. It might be better to keep the exhaust concealed under the hood and exit under the dozer. That way there would be less chance for a youngster to get burned.

I understand the concern. I am trying to make this thing as safe as possible (return to center handles if he lets go, seat kill switch if he gets up, throttle out of reach, two emergency kill switches, start switch out of reach when sitting on seat and the 12v feed to the start switch passes through the seat switch so he couldn't start it unless he's sitting in the seat) but the problem is, it is dangerous no matter what. I agree with some of the other comments. Even though I'm not trying to harm my son in anyway, he needs to learn to appreciate equipment, tools etc. Shop classes in high school pretty much don't exist anymore because of fear of getting hurt and that's a shame. While my son is still young, I hope we can just take it to shows and show it off a bit and look at the other tractors. As he gets older, I hope to show him how it works and how to fix it if it breaks.

As for concerns about temperature and cooling, I borrowed a thermal imaging camera. I only took a few shots. I wanted to see what the pumps would do since they are under the seat. And what the exhaust would do since it's close to the fuel tank and hydraulics lines.

As you may have guessed from what I've said so far, I drove it for the first time with the new engine and the plow setup.

Mini Dozer Test Run With Blade - YouTube

My parents have a decent hill behind the garage. I wanted to see what it would do. It felt steeper than it looked.

Mini Dozer Climbing A Small Hill - YouTube

Overall it did really well. The new engine didn't bog down at all. The plow seemed strong when pushing things. The smaller engine pulley slowed it down a bit. Much happier with that. My son doesn't need to go that fast. I picked a horrible day to do this since it was cold and rained all day but it was fun. On;y a few more things to do then it's time for paint.

Thanks for looking.

ericher69 · Dec 31, 2013

dozerbuilder01 said:
The rotary table has been fun learning to use. Really makes you think. CNC would have been a lot easier. I ended up doing that. I bought a piece of 1-3/4" j pipe from jegs and a cap from farm and fleet. Made a flange like the picture. Problem is, vibration was too harsh and the screws pulled out very quickly. I will have to make an additional mount. I'll figure it out later. I understand the concern. I am trying to make this thing as safe as possible (return to center handles if he lets go, seat kill switch if he gets up, throttle out of reach, two emergency kill switches, start switch out of reach when sitting on seat and the 12v feed to the start switch passes through the seat switch so he couldn't start it unless he's sitting in the seat) but the problem is, it is dangerous no matter what. I agree with some of the other comments. Even though I'm not trying to harm my son in anyway, he needs to learn to appreciate equipment, tools etc. Shop classes in high school pretty much don't exist anymore because of fear of getting hurt and that's a shame. While my son is still young, I hope we can just take it to shows and show it off a bit and look at the other tractors. As he gets older, I hope to show him how it works and how to fix it if it breaks. As for concerns about temperature and cooling, I borrowed a thermal imaging camera. I only took a few shots. I wanted to see what the pumps would do since they are under the seat. And what the exhaust would do since it's close to the fuel tank and hydraulics lines. As you may have guessed from what I've said so far, I drove it for the first time with the new engine and the plow setup. Mini Dozer Test Run With Blade - YouTube My parents have a decent hill behind the garage. I wanted to see what it would do. It felt steeper than it looked. Mini Dozer Climbing A Small Hill - YouTube Overall it did really well. The new engine didn't bog down at all. The plow seemed strong when pushing things. The smaller engine pulley slowed it down a bit. Much happier with that. My son doesn't need to go that fast. I picked a horrible day to do this since it was cold and rained all day but it was fun. On;y a few more things to do then it's time for paint. Thanks for looking.

You my friend are having too much fun on that thing; enjoy you deserve it!

Nice touch on the exhaust clapper!