RC Truck and Construction

RC Truck and Construction (https://www.rctruckandconstruction.com/index.php)

- Big Boys of the road 4x4/6x6/8x8/10x10 Trucks (https://www.rctruckandconstruction.com/forumdisplay.php?f=27)

- - Project 8x8 (https://www.rctruckandconstruction.com/showthread.php?t=11098)

Hi all. I am in this hobby for 15 years now, not active all the time.Last year after few years of pause, I bought tamiya hilux to drive around with my friend. And afer some time and talking, we discovered a world of 1/14:D. He bought 6x4 scania, and I bought a Bruder toy:lol: I tought I could do the conversion to RC as Bruder toys look very nice.
I bought this crane
http://www.outbacktoystore.com/1-16t...rs-image.pjpeg
And then these to
https://lh3.googleusercontent.com/-5...8ff6cbbca9.jpg
Also rc fork lift
https://lh3.googleusercontent.com/-0...5333868623.jpg

Then I had to say STOP, as I had many toys that I can only watch:confused:

So started to brake it down
https://lh3.googleusercontent.com/-I...bcd439c5.0.jpg

I see that I cant use this chassis, tires and wheels are useless, so only cabin and crane for now. As I bought 2 trucks, the main thing to do was to make chassis for them. Some calculations later showed that I need 22 wheels, 22 tires, 7 axles,... $$$$$$$$ Maybe it would be better that I just bought tamiya truck and call it a day:cop:

But I didnt:D

First I started doing the most expensive part, the axle. But hey, front axle is not that expensive, so I made a design for drop axle, and some wheel hubs, to see how tamiya truck tires will look on Bruder. I used my 3d printer to print out my design.

https://lh3.googleusercontent.com/-7...b034fde28d.jpg

https://lh3.googleusercontent.com/-Y...09a069a182.jpg

https://lh3.googleusercontent.com/-k...ac08c39a9f.jpg

Soon after that I started looking for some small cheap open differentials, and found something fo a 1/12 scale buggy that I thought might work. Ordered it, and started to design my axle around it. Somewhere along the way a friend called me and said that he needs all wheel drive to drive offroad, rwd is just not enough he said.
So I droped drop axle:D, and decided to go al wheel drive. A spent some time working on the axle design, printed out 10 different ones to find the best solution.

https://lh3.googleusercontent.com/-c...28b00c2b4e.jpg

Then when I thought I had it, friend called again and said: "My friend, we need to have remote locking to help us when we get stuck offroad!":lol:
Ohhh, here we go again. So I did a simple locker for my bought diff.

https://lh3.googleusercontent.com/-Q...3582de3ee8.jpg

I dont like how this version is engaged, I have some other ideas for it, but I need to find a thin cable with tubing I could use, and then I will continue with lockers. For now its on hold, but I left the axles with the place to install lockers later.
So this is the first version of the rear axle with V1 locker instaled

https://lh3.googleusercontent.com/-A...0121821162.jpg

Then I decided to drink one beer :lol:

https://lh3.googleusercontent.com/-p...23af774210.jpg

Then it all goes bad. I realised I dont have enough tamiya wheels to see how it will look like when I put 2 axles at the rear. So I decided to design my own wheels and print them out.
Then I realised I dont like tamiya hex, and I want scale 10 bolts hubs. So I designed new wheel and hub. Then I needed leaf springs for the rear. I tried to design and print them, and I was very supprised as they worked really good. First design was something like tamiya use, but than I realised thats far from scale, so I used some Actros photos to see how the real thing looks like. Few days, and many sleepless nights later, I had all of this on my desk.

https://lh3.googleusercontent.com/-x...Ic42/felga.jpg

https://lh3.googleusercontent.com/-n...121ffec085.jpg

https://lh3.googleusercontent.com/-C...02e8133cf4.jpg

https://lh3.googleusercontent.com/-K...c84c350094.jpg

https://lh3.googleusercontent.com/-s...394452a538.jpg

https://lh3.googleusercontent.com/-4...13345948.0.jpg

https://lh3.googleusercontent.com/-l...15dd1b4f40.jpg

https://lh3.googleusercontent.com/-V...d96cb61f.0.jpg

https://lh3.googleusercontent.com/-w...0b817c1e86.jpg

Then was the time to use some aluminium profile for the frame. I dont really like it and I will use it only for a prototipe, I want it all in steel for final version.

https://lh3.googleusercontent.com/-0...bfb4a4038b.jpg

Then realised I need a transfercase to connect all the axles to the motor. So designed one and started printing

https://lh3.googleusercontent.com/-9...e1c88c6d94.jpg

https://lh3.googleusercontent.com/-Q...c1b329f426.jpg

https://lh3.googleusercontent.com/-S...2016088220.jpg

Next thing to do was front and rear susspension. I used really truck photos for the reference. You will notice one fail i my idea of using scale 10 bolt wheels design. When you realise you have 8 wheels x 10 bolts, thats 80 bolts and nuts:lol:, and at the time I was happy to find 20:rolleyes: But a 100 just arrived today:cool:

https://lh3.googleusercontent.com/-_...179d134fe0.jpg

https://lh3.googleusercontent.com/--...a323c421e7.jpg

https://lh3.googleusercontent.com/-8...b2e4e569ed.jpg

https://lh3.googleusercontent.com/-n...c36a4cb4a3.jpg

Then I had to do the steering, so to make it right I needed to check my ackermann and turn radius.

https://lh3.googleusercontent.com/-8...52520angle.jpg

And then do the steering links

https://lh3.googleusercontent.com/-r...c42/poluge.jpg

https://lh3.googleusercontent.com/-f...me%2525201.jpg

While I was going crazy with all the angles for steering, to chillout and give myself a smile back on my face, I did a simple carrier for my bruder cabin.

https://lh3.googleusercontent.com/-7...f3d64f740a.jpg

https://lh3.googleusercontent.com/-O...1bbff0f5f7.jpg

An with smile on my face finished steering links

https://lh3.googleusercontent.com/-Q...d424ff7333.jpg

So that is pretty much where I am at right now. I tried to make some drive shafts, just to see all of the wheels move, and test the drivetrain. My idea was to use a 12V dc motor with gearbox on it with 350rpm output. But it seems underpowered. So I decided to go to classic 560 motor and I ordered a tamiya 3 speed gearbox just to test it. But the plan is to make my own gearbox, probably 2 speed, as it seems enough and uses less space.
I wont be working on the truck for a week or two now as I am busy, but for that time I am open to any suggestions or comments, and a good advice for maybe where to find some cool parts I could need.

Hope you like my post:)

That's awesome! Really nice work on the axles and suspension. Yes you could have bought a Tamiya truck for less but this is way better. No one else will have one like what you have built and to me that is perfect!

Reg

Cool project and a great choice of beer!

Very impressive. What scale is the bruder body?

Tnx guys.

Bruder is advertised as 1/16, maybe its a bit smaller than tamiya, but I dont really notice it.

Quote:

Originally Posted by Rakthi (Post 137782)

Cool project and a great choice of beer!

Yeah I was thinking the same thing about the beer.

Nice work too.

Quote:

Originally Posted by matis88 (Post 138451)

Yeah I was thinking the same thing about the beer.

Nice work too.

Double that!!! More dark beer!!!

Quote:

Originally Posted by Cooper (Post 138452)

Double that!!! More dark beer!!!

you drink dark beer and your parts get wonky!! stick with light beer cooper:D

killer build . i could use some axles like that for one of my builds

Master build. Accurate work.

Tnx guys. There is no update yet, I am busy with my college exams, and I am doing some work on my workspace, so I can make better parts for my truck. I just started to make a small table cnc mill just big enough to make axle housings from aluminum.
Only update is, i bought tamiya 3speed gearbox to fit on the truck so I can test all the components. And also i placed an order on a tamiya man 4x2 to compare the size an have something for reference.

Quote:

Originally Posted by jeffgp (Post 138706)

killer build . i could use some axles like that for one of my builds

Let me give them a good test and find the week spots to fix. And then I would be able to make more and sell them if someone needs them. I guess it would be nice to be able to buy cheaper axles, and again functional and strong enough.:)

I'm at the same point with my project .A complete stand still. i have yet been able to get a set of 8x8 axles that i can actually afford. The stuff on the market is really good stuff but way out of my price range. i just need some functional axles that work but cont need to be built like a tank. With all the 3d guys making their own parts now it would be great if someone could build and market a nice 8x8 set up that you dont need to take out a second mortgage to pay for.
I ultimately wanted to build a Marine Mk48 that is not in service anymore but i really like the front and rear articulation function of it.
Just need 2 front steerable axles and 2 rear straight drives.
I pretty much have everything else i need for the job but the the axles.
Anyone know of an affordable 8x8 set or someone who can make a set?

Hi guys, sorry for late update. I had a ton of other things to do. I had some problems with my 3d printer, so had to replace some parts and calibrate it all over again. I mounted the cab on the truck and fitted tamiya gearbox with motor under it. That gearbox is really too big for scale look so I will have to make smaller one for the new truck.

Update on this build, I decided that this will be finished like this, I hope to make it run in next few days. I bought Tamiya Man tgx tractor and got a bit dissapointed when I compared the bruder cab with tamiya. Bruder is a bit smaller, and from when I was a kid, i never liked mixing scales, so on the next truck I am moving on a 1/14 scale. Bruder is great in detail, much better looking than tamiya, but size matters. As I allready bought 2 bruder trucks, I guess I will make 2 chassis for them, and then go to 1/14, and put bruders up for sale as I dont have enough space in my apartment allready.

Big update is, 8x8 1/14 truck is my masters work for college now, so I will have to work on it fast, and finish it in next 3 months. It will be based on this design,but 3d print will be replaced with laser cut steel, frame will also be steel,axles cnc aluminum. I will try to go as scale as possible in this short period that I can. The thing I will use 3D printer this time will be the cab, as I dont wont to use bought cab for my masters work. In the last month I started learning 3D design in solidworks, so this is what I came up with for now. Anyone knows what it is?

https://lh3.googleusercontent.com/Vw...5=w824-h464-no

Wow a Volvo FMX? Looking forward for update

You can find new Volvo photos on facebook page. I am in the middle home renovation so hobby is on hold. This 8x8 was a nice prototype to learn, but for the FMX I am working on a scale chassis with scale volvo axles and it will be 8x6, as Volvo doesnt make more than 3 driven axles.
https://m.facebook.com/Scale-Product...7534910171976/