Mini Hägglund

[jeeper90]

sounds good then, good luck with your project.

[Steinbruchsoldat]

So, we parked the Justy for some good access to the axles:

[surpip]

Awesome, I had no idea that redneck had made to Germany. Love it.

[87manche]

Originally Posted by surpip

Awesome, I had no idea that redneck had made to Germany. Love it.

his neighbors must love him already. just moved in and trashing up the place.

[Steinbruchsoldat]

Originally Posted by 87manche

his neighbors must love him already. just moved in and trashing up the place.

Well, it`s just the third car i`m parting out there. And i was already there when most of my neighbors moved in...


Picked up the saw today:



After a bit cleaning, fresh oil and dialing in it runs like on it`s first day:



Bought it for about $200, the seller thought it`d be broken...

[Steinbruchsoldat]

Finished parting out the Justy yesterday. Here`s a pic of removing the rear axle:



Made a roller stand (?) for my saw:





Also a jack stand for some welding practice:



Will pick up the steel tomorrow, so i`m going to have the first track assembly ready by Saturday...

[Steinbruchsoldat]

Couldn`t get the steel today, maybe tomorrow if i`m lucky...

We started making a hole in the wall for ("thing that evacuates welding fumes" how`s this called?):





Also made a stack for shorter pieces of steel:




What i need now is an idea what to use for the turning connection between both cars. There`s the up and down and the left and right movement between both cars. I already designed the joint for that. Now i need a joint that is able to turn around itself and fitting a driveshaft through it. Something like the "thing" that`s between the upper and lower part of an excavator and allows it to turn...

[xj9140]

Originally Posted by Steinbruchsoldat

Couldn`t get the steel today, maybe tomorrow if i`m lucky...

We started making a hole in the wall for ("thing that evacuates welding fumes" how`s this called?):

Exhaust vent.

Thanks for sharing amigo.

[Steinbruchsoldat]

Originally Posted by xj9140

Exhaust vent.

Thanks but i think the word i was looking for is fume exhauster:



Also ran a air hose down in my shop:



I didn`t get the steel today, so i got the axles ready. I`m going to use the rear axle in the front car and the front axle in the rear car. The drive sprocket fit`s perfect:







I`m going to finish the front car first and make a simple skid steer mock up with the parking brake, so i`m able to test drive the front car itself...
I also decided to get a small trailer to transport the front car. The rear car will go in my van...

[85blue4runner]

nice fab work, always cool to see projects from other countries.

try fume extractor:

http://www.mist-dust-collection.com/...ms_Flexair.htm

[Steinbruchsoldat]

Came up with a new design for the joint between both cars. It`s based on the real one and should be a lot better than my old design:

[Back Woods]

All the license plates over the have UL on them?

[Steinbruchsoldat]

The first letters are different, depending on where you live. I live in Ulm, so it's UL. If you live in Stuttgart it's S and so on...
The other characters are based on chance(?)...

[Steinbruchsoldat]

Finally got my steel today:



And started over:









Unfortunately it warped while welding, so i have to cut it off and redo it tomorrow... :coffee:

[Steinbruchsoldat]

Redid the part from yesterday:



Then i started with the second one:







Both finished:

[Steinbruchsoldat]

Figured out the final dimensions and engine position today. Also shortened the drive shafts:





Then i started with the frame:



And started machining the second drive sprocket:

[Steinbruchsoldat]

Big change of plans today:

Engine/Drivetrain:
I wan`t happy with the engine position all the time. The center of gravity is way to much up front, the aperture angle is incredible bad for a tracked vehicle. And the drivers view is really obstructed by the big engine...
So i decided to put the engine all the way back in the front car and built a chain setup to the drive sprockets. I think this is a lot better...

Suspension:
It`s not a really good idea to built a vehicle without any type of suspension. The real Hägglund uses two leaf springs to hold the track assemblies and the chassis together:



Not much to say, i`ll do it the same way...

[Steinbruchsoldat]

Almost finished one track assembly today:











Just had to take a seat....





So much better than before...

[Steinbruchsoldat]

First i finished both track assemblies today:





Then i started with the main chassis beam:





This is how it`ll be mounted:



Placed all the stuff. Space is tight, but everything will fit...

[Steinbruchsoldat]

Here`s another pic of the track assembly:



Also started with the second track:

[87manche]

starting to look like something there.

It looks like the motor is sitting on the factory subframe. Are you planning on reusing that or building a custom piece to support the motor and radiator? Worried about cooling with the radiator in the back?

[Steinbruchsoldat]

Yes, i`m reusing the factory subframe. Saves me a lot of time making the lower engine/tranny mounts. I just need to tie it into my frame and built the two upper engine mounts...

I don`t think there will be cooling issues, the engine shoiuldn`t be under heavy load...

[Steinbruchsoldat]

Tied the subframe into the main chassis beam today:







Still thinking about how i`m going to tie the upper mounts into the frame. Maybe you guys have some suggestions?

Also got the bearings for the cv shafts:



Got the small one painted on sunday:

[Steinbruchsoldat]

We still couldn`t figure out how the articulated joint between both cars works. Because of this we took a ride to a ski resort where i know there`s a Hägglund in use. We looked at it and tried to figure out how it works but we still couldn`t. I looked for the owner and asked him how this think works. He tried to explain it, but couldn`t figure it out himself. So he drove it right over the next ditch, so it would articulate. Then we had a look and finally saw how this works:



Looks like the bearings of the rear joint are some sort of rubber bushings:



But the joint itself takes the most movement, you can see it here:



Kind of hard to figure this out if the car isn`t articulated...

[Steinbruchsoldat]

Started the cage today:



First i made the window frame, to get the exact width:



With this measurement i could start with the cage:



My saw spilled cooling fluid all over the place, so i made this thing:



Almost finished:





Not sure why it looks like crap on those pictures but it`s all square and how it should be...