Mini Hägglund

[Steinbruchsoldat]

Yeah, i should cut the angle the other way, so it`s flat on top...

[WGTactical]

If you're wanting the tire to serve as a guide to keep the track centered, you'll probably want those bars more perpendicular. As they are now, the tire will ride up on them...especially when you are turning or riding along the side of an incline. Just like anything else, once you get it running you'll see other areas that will need attention. BTW, that's a neat project you have there

[Steinbruchsoldat]

Yea, i should probably do that... Any thoughts on how much? Anything like 60-70 degrees? Should sit at 50 now...

[WGTactical]

Originally Posted by Steinbruchsoldat

Yea, i should probably do that... Any thoughts on how much? Anything like 60-70 degrees? Should sit at 50 now...

I'd probably say 70 or better. If you have a chance to see some over-the-tire track systems for skid steer machines, it will help you get an idea of how you might want to proceed with yours. Here's a link
http://www.everythingattachments.com...cks-s/8406.htm

[87manche]

bump for an update.

making piles o grousers?

[Steinbruchsoldat]

I wish i would...

I`v been working on my van the last week and then spent the weekend at the offroad event where i wanted to test drive the Hägglund. Oh well, it was fun, even without the Hägglund:



But, i bought a nice drill that i`m going to pick up tomorrow. Should speed up the progress of drilling the 1600 holes for the tracks...



I`m also going to get a quote on the steel that is needed for the grousers...

[nwiTJdave]

One thing you may consider when trying to get a better price on some steel is ask around to other people you know that are buying steel and buy more at once. The more weight you buy the cheaper it is. Also, buying full lengths is cheaper than getting saw cut to size. Or, ask them for drops. When people buy say 8 ft of a 12' random length bar they are charged the full length price plus the saw cutting fee. They will then scrap off the remaining 4' or sell it off at a discounted price (usually scrap price plus some %).

Great little project you have going though

[Steinbruchsoldat]

I need about 400ft of pipe, so there`s no other way than buy full lenghts. But i can order them at work, so i don`t pay much...

I started working on the Hägglund again today. First i set it at ride height and put on one of the last few missing tubes:



Then i started cleaning up the wiring mess and place all the switches and fuses and electrical stuff:





Prepping the ammo can for the ecu:



Everything together. It`s a lot cleaner now:



Also ordered about 170ft of square piping for the grousers...

[Steinbruchsoldat]

So i bought a (real) welder yesterday:



Serviced it:



And organized all the stuff from the welding cart:



Then i finished organizing the wiring mess and mounted all the vacuum valves and stuff:

[Steinbruchsoldat]

Started with the shifter linkage today:



Should work with some slightly changes...

[Wretched502]

Geez, this thing is crazy. Even got turn signals!

[Steinbruchsoldat]

Originally Posted by Wretched502

Geez, this thing is crazy. Even got turn signals!

First i wanted to do a full lighting system, because i planned to drive it on the street with the rubber tracks. But now i`m not sure what to do, because of the steel tracks...

Picked up the first batch of steel for the tracks:



Had to lengthen that length cutting device :



And started cutting:



First 50 cut:



The saw blade wasn`t excited to cut all that stuff alone, so i bought it some company:



All 100 cut:



This is how i`ll make them. Any thoughts?:



The i wanted to start drilling the holes, but first made a jig:



The first two finished:

[87manche]

looks good. THe simplified design and your hole drilling jig should make assembly quick

[Elwenil]

I think I would try to keep the wheels rolling in the exact center of the track. This would help prevent the track from wanting to twist and roll, which could pop another tire or spit out the track.

[Steinbruchsoldat]

I can`t do that, otherwise i`d have to build them more narrow, and i don`t want that...

But i don`t think this is going to give me problems, because even the big Pistenbully snowcats run that setup...

On the rear car they`ll be centered, and will be a lot wider. I really like that idea, almost the whole surface will be covered by the tracks...

[Elwenil]

Keep in mind that with wider tracks you have less ground pressure and less traction. Search around for the thread on the Israeli guy who built a 8x8 rock buggy only to find that it couldn't climb since no one axle had enough weight on it to keep from spinning. If you are going to crawl around on snow like a SnowCat, then wider is better for floatation on deep snow. If you are going to copy the Hagglund, you may want a much narrower track to get traction on climbs.

[Steinbruchsoldat]

Yeah, i watched this thread and really hated to see that he had to go back to 6x6...

I did the math when i planned the tracks, they should give me about the same ground pressure that a Hägglund has. So ist should be good for everything. If not, i'll just build some summer and some winter tracks...

[Steinbruchsoldat]

Started cutting the tire guides today:



While the saw was cutting i started drilling:



800 holes later:



Then i made a welding jig:



My neighbor grinded the pieces while i started welding:



When we called it a day:

[surpip]

It looks like you bent all thread around the bottom main tube to bolt the springs to, I'm thinking regular "U" bolts would be better, as you bend the all thread into a u the threads become a week link, and I've had them snap.
Just a thought.

[Steinbruchsoldat]

This was discussed before:

Originally Posted by Steinbruchsoldat

It`s just the standard grade 8 stuff. It won`t be moving fast, it weights a lot less than a car, so i don`t see any problems there...

[Steinbruchsoldat]

Welded 94 grousers today. I`m missing steel for the last 6, but i`ll get it on monday:



Also got the conveyor belt and plastic for the drive sprockets today:





It`s my birthday tomorrow, so i`ll be happy to finish the first track there...

Can someone make me a drawing for the drive sprockets?

[Steinbruchsoldat]

Thanks guys... :wavey:

First i cut the conveyor belt this morning:



Finished:



Then i started drilling holes:



Finished:



Even my sister helped me today::



Ten i ran out of bolts, but had to place the track to see how it looks:



Also mounted a pair of headlights:

[irab88]

looks mean!

my only concern is that the ends of the bolts will get chewed up, and maybe (not too sure) but it looks like there is a chance of the bolts pulling through the conveyor? just my thoughts.

other than that, looks like a solid design

[Steinbruchsoldat]

They'll get chewed up for sure, but I'm pretty sure that those bolts will never be able to get out regardless of how they're mounted. They'll always be dirty and wet, so they'll be seized either way... That's what an angle grinder is made for...

There's no way the bolts will rip throught the conveyor, there's heavy belting inside them...

[xj9140]

She is beautiful