Oshkosh Het M1070, M1000
 

I started this build last week. Spent the last 6 months designing it in my free time. The first version was a wood replica, (avatar pic) some engine details and cab interior.

Re: Oshkosh Het M1070, M1000
 

This is what the truck was designed from. I also found that blueprints.com is a good starting point for basic drawings. I searched the web and found Oshkosh site, some of their brochures have the specks for the truck and sometimes include an orthograph view of the truck. To bad they removed the Het that I am modeling from the site.

First things first, the design of the tractor is 22.5 inches long. This will be a 1/16 scale build due to having the tank for it already.

Been gathering parts, so far I have 2 tlt-1 axels for the front and rear steering. I have 2 intermediate axles, not happy with the width to wide with tires mounted.

My father has my lathe at his place and will be turning the hubs for me. I havent decided on the tires so far, I like the rockcrusher from rc4wd, but the OD is 3.55" ,y model calls for 3.3", I think it will be close.

I am planning on a Tamiya 3 spd and maybe an rc4wd 2speed as a transfer case.

I did get the frame put togather, and the tranny in position. Started on the cab yesterday. This is my first try at styrene, so I hope you are not as critical as I am myself. I have the floor positioned, then it was late and had to get ready for the school thing.

Re: Oshkosh Het M1070, M1000
 

That's true craftsmanship right there, very cool use of wood!:)

Nice work,
-Alex

Re: Oshkosh Het M1070, M1000
 

your wood models are amazing!

Re: Oshkosh Het M1070, M1000
 

Thanks everybody, saw a problem with the frame after I posted. The redesign is finished now I just have to make some more parts.

Re: Oshkosh Het M1070, M1000
 

Great looking model! I think you have the skills to make an exceptional rc model M1000. If you can make one out of wood, plastic and metal should be no problem;);)

Re: Oshkosh Het M1070, M1000
 

I will be giving it a try, may take awhile as I learn new things and remember some things that I have forgotten.

Re: Oshkosh Het M1070, M1000
 

Hey Carl, check out the big lorry blog site and do a search, I think there's more picture's in archive's http://www.roadtransport.com/cgi-bin...ncludeBlogs=22
Later, Neil#2 aka doodlebug.

Re: Oshkosh Het M1070, M1000
 

That is a cool site, I visited that one awhile back. This is a new model than the one I am building, but thanks for the info.

Re: Oshkosh Het M1070, M1000
 

Little bit of an up date, I started cutting material for the main cross members. Then had a resaw job come in that was a rush.

I did manage to get the rear suspension designed, Tyler will be making the bag assemblies for me, Thanks Tyler.

Here is the layout.

Re: Oshkosh Het M1070, M1000
 

Carl it looks like you nailed that suspension geometry right away. Renderings look great and I am proud to have some products for you on your truck. It will look awesome when it all comes together. Can't wait to see some more progress on this beast. :D

Re: Oshkosh Het M1070, M1000
 

Thanks Tyler, I have been in the shop playing with my drill press that I converted into a mill. Milled out the rear cross member. I will post a pic later.

I have to make the air bag mount next before I install the cross member.

Re: Oshkosh Het M1070, M1000
 

Hey Carl that mount and rear frame there looks good already. I have the lower set of your bags done tonight and I will be getting the tops done tommorow and have them ready to go to you by thursday if I can. Hope you're about ready for them.

Re: Oshkosh Het M1070, M1000
 

Thanks Tyler, that will be great. I have 5 more mounts to make for the bags. I haven't started on the front supports so far. I will be back on the build this weekend.

Re: Oshkosh Het M1070, M1000
 

Made some progress this afternoon, made the axle supports, changed the design a bit so I can mount the shocks inside the frame like the 1:1. I have the front support side frames started but not finished (need to bend them).

Its amazing what you can do with a bandsaw, drill press, and a set of good files.:)
here is the axle support.

Re: Oshkosh Het M1070, M1000
 

Made a little more progress this afternoon.

I will be changing out the socket head cap screws for button heads. I need the scoket heads for the crossmember installation.

Attached the rear section frame mounts and axle supports. Used a .125 punch to help align the parts. Worked pretty good.

One thing I do not like is that the aluminum gets marked easily. I will have to disassemble everything and clean the parts up after everything is worked out.

Thanks for looking

Re: Oshkosh Het M1070, M1000
 

Progress is lookin good Carl. Your bags should be there shortly so you can have a rolling chassis. Can't wait to see them mounted up on this great frame. Should look right at home.:D

Re: Oshkosh Het M1070, M1000
 

It will be awhile before I get a rolling chassis. I have to cast the axle housings and the tires. Still waiting on the rims, then I will have to make the drive axles. Not looking foward to that:(, I also ran out of 2-56 bolts today.

The good news is that exams are over and I get a break for 3 weeks before the next batch of students come in for summer classes.

Re: Oshkosh Het M1070, M1000
 

Looks good car and taking your time is a good thing it will give you time to think about it and get it exactly how you want it.

Travis

Re: Oshkosh Het M1070, M1000
 

Thanks Travis, although this is my first build, you guy's inspire me to do better.

Thanks for looking

Re: Oshkosh Het M1070, M1000
 

Well classes are out till June, the only problem was that my HD was approaited by one of the students. Luck would have it that I backed up the drive last week. No cad drawings were lost.

Anyway, my friend Tyler came through for me on the air bags.:eek::cool::D

Then I realized that I gave him the wrong measurement :o. So I had to do some modifications.

First the product supplied was what I asked for to within 0.004"

I took a trip to the local autozone, and was able to get an end section of hose material for the air bags. As I was compairing the assemblies with the 1:1 I noticed the slight bend in the bag assembly. I cut the new material a little long in case I need to shorten them later. Then I used a dremal fine burr to resize the inside. This worked out pretty good, as I was able to get the bend in the bag assembly.

Next I mounted the bag to the frame mount, and support arm. I used a 2-56 threaded rod and a nylock on the top. The bottom was secured by threading a bracket that is mounted to the support arm. The best part is that it gives me a way to adjust the height of the axle.

I am very happy with Tylers work, since I am a newbee. I can't understand why these bags are not on the other trucks on this great board.

Heres the pics

Had to add the referance pic

Re: Oshkosh Het M1070, M1000
 

I installed axle 3's suspension today.

Re: Oshkosh Het M1070, M1000
 

Hey Carl those bags look right at home now on your project. Sorry you had to re make the bags themselves but they look great. Can't wait to see this chassis rollin. :D

Re: Oshkosh Het M1070, M1000
 

Thanks for the hard work you put in I am one step closer in getting to that point.

Finished installing the rear drive suspension. :D

Re: Oshkosh Het M1070, M1000
 

Carl that thing is going to be such a beast. What axles are you going to be running on it?

Re: Oshkosh Het M1070, M1000
 

I am going to use some axles that I designed, the internals will from a tlt axle.
I will have to shorten the axle shafts, byt its the challange in it.

I will start making a pattern for casting the axle housings in the morning.

Still don't know what to do for the front leaf springs. I want to stay close to scale, but may have to compramize. If I could find some blued 1/4" annealed spring steel, I would make them myself.

I found some at McMaster Carr, that is 60$ :( I only need 32 inches worth.

So if ya know a supplier that will supply short lengths, I am all ears.

Took this beast up to the hospitle to show my Dad, he was impressed. (first time in 53 years:rolleyes:)

Now he wants out so he can turn the rims.

Re: Oshkosh Het M1070, M1000
 

Fist of all let me just say your wood models are OFF THE CHAIN!!!
And this Oshkosh is going to be one amazing ride...
Just like the real thing, only smaller;)

Big John

Re: Oshkosh Het M1070, M1000
 

Thanks, to bad I never kept one of the wooden ones for myself. Maybe the next one, but the RC bug has bitten again and it may be a while.

Re: Oshkosh Het M1070, M1000
 

Made the axle master patterns today. Wood sealed with thin CA, sanded and recoated 3 times.

Re: Oshkosh Het M1070, M1000
 

Carl,

I have been reading thru your thread and it is awesome, this truck is on my list of trucks to build once i get two others finished. What thickness aluminum are you using for your suspension brackets. I hope when I get the M26 done to start on one of these thank you for sharing.

Merritt

Re: Oshkosh Het M1070, M1000
 

Merritt, the brackets and frame rails are 1/16" thick. Basiclly standard extruded alumnium cut to shape and finished with a file.

I am still learning about how to build them. So far so good, changed my mind about casting the axle housings(it would cost more that the truck itself).

So now I am awaiting some flat stock alumnium. These axles are designed to use Tamiya's diff setup.

Thanks for looking.
Carl

Re: Oshkosh Het M1070, M1000
 

Hey Carl have you thought about casting them yourself? http://www.lindsaybks.com/dgjp/djgbk/char/index.html
Later, Neil#2 aka doodlebug.

Re: Oshkosh Het M1070, M1000
 

That IS some nice hand work. I like it.
On your solid modeling; Is that done with Autocad or Solid Works? I hope I can do that kind of drawing someday.

Re: Oshkosh Het M1070, M1000
 

Thanks Neil I will look into that.

Steve, I did solid the modeling with AutoCad 2009. First make an orthographic drawing of the part you want to model. Copy that drawing and start a new acad3d drawing, then paste the copied drawing into the new. This way you have all the elements in the proper view. Then you can use the extrude, press pull, subtract combine and 3d rotate commands to finish your shape.

You can get fancy by adding surface textures and rendering to get jpegs like I have posted.

Then use stlout on the command line to create an stl file for export to bobcad or othere gcode generator program that you have.

As for solidworks, I am not that proficent at it so far. (still Learning)

Re: Oshkosh Het M1070, M1000
 

Thanks OZ

I thought about that also, just haven't located some. I will have to look in the scrap bin when I pick up my order from AAA supply.

Re: Oshkosh Het M1070, M1000
 

Try your local lumber yard or plumbing supply house for banding, look around construction jobsites. The stuff is always laying around.
Later, Neil#2 aka doodlebug

Re: Oshkosh Het M1070, M1000
 

Thanks Neil I will give that a try.

Re: Oshkosh Het M1070, M1000
 

Thanks for looking and helping out so far. My materials order came in and I will be able to make some progress now. I hope to start on the front spring assembly soon thanks to Steve for helping on that score.:D

Re: Oshkosh Het M1070, M1000
 

Made some progress:D slow going, took two days to make this one, 3 more to make. Still have to resize one axle shaft, thinking about that one.

Re: Oshkosh Het M1070, M1000
 

:eek::eek::eek::eek:


..... speechless!

that is amazing work. what tools were used to make that? and what is the overall length?