Quadrotrac

Thanks guy.

Well, i`m not the guy thats able to lay around doing nothing. So i practiced one handed lathe operation:

17649649my.jpg


17649667mo.jpg


Both bushings on their place:

17649672ln.jpg


Then i had my father help me and we removed the chassis table to put the frame on jackstands. Forgot to take a picture with the table removed:

17649671dx.jpg


Also got the wheels and hubs:

17649666wu.png
 
Well, it`s not fun to work one handed. Only thing i`m almost as good lefthanded as righthanded is shooting, but that doesn`t really help me in the shop. Even holding a file to deburr some edges is really a challenge...

Cleaned up the shop a bit before i started working on the axles:

17658688jm.jpg


Had a look how the track goes together with the wheels. They`re a bit wider than the ones i wanted to use on the Hägglund, so i might have to redo the tracks. But i`ll try it first:

17658707sn.jpg


Then i started turning the hub studs:

17658723je.jpg


Cut the M20x1,5 threads:

17658731ea.jpg


Fit`s:

17658741ca.jpg


Both finished:

17658757yx.jpg


The axle itself consists of two tubes that slide into each other to tension the track. Not sure how to tension them, either fixed with allthread or dynamic with some gas struts. Would like to hear some thoughts on this.

Holesawed both tubes to accept the hub studs :

17658762eu.jpg


17658763an.jpg


How it goes together:

17658767ww.jpg


Both tubes with wheels:

17658773vp.jpg


Modified the nuts to work with a normal 32mm socket:

17658789zx.jpg


This is how it`ll come together:

17658807zw.jpg


With the spocket:

17658808sp.jpg
 
Continued working on the bogie axle:

17670937bt.jpg


17670945jh.jpg


17670967zv.jpg


17670989mt.jpg


Tacked together:

17671013xa.jpg


Cardboard engineering:

17671023ns.jpg


Cut:

17671007wq.jpg


Together. Still needs some triangulation:

17671036qz.jpg


A bit of movement, about half way to the bump stops:

17671041gf.jpg
 
Turned the two hubs for the right axle:

17691048vt.jpg


And cut all the parts:

17691087vl.jpg


17691060bz.jpg


Wan`t happy with the cut from the hacksaw when i made the last set of bushings. So i bought a slotting saw for the mill, but had to make an arbor first:

17691074ny.jpg


17691083rt.jpg


And cut it:

17691091ju.jpg


I like that a lot better:

17691098zw.jpg


Also got the parts for the clutch engagement:

17691099eu.jpg



Still not sure on the front car. Would like to hear some ideas from you guys.

First i wanted to build a tube frame with some sheetmetal inserts. But i don`t like that idea anymore. I want to go with a fully enclosed cab, including a door, windows and a folding windshield.
Bu i also want it to be bulletproof. Like rolling it and go on driving (almost) without any damage. Not sure if this is possible, but it won`t be driving fast and it`s pretty light weight.
Would like to build an exocage, preferable out of square tubing, something like this C5:

17634259bd.jpg
 
Come on guys, really hoped to get some help from you .I`m just not experienced enought in cage designing...

Turned the outer bushing parts today:

17702372ri.png


17702374gl.png
 

krl81

Adventurer
Sorry but I can't help you. If I could I would! I can tell you if I think something looks good, but that probably won't help you much in the hole flipping over without dying. :)
 

Wainiha

Explorer
Speedglass is a non scratchable Lexan product I believe. It would be nice for windows.

Connect it to the cage with rivots, nut serts or Zoos fasteners maybe?

It is kind of hard to make suggestions to the guy who builds every single part himself. I might not even qualify to make suggestions here. Haha.

For the solid panels what about some RV type panels? It would have insulation with some light weight "skin" on both sides.

I think most of us are learning from you and not the other way around.
 
Thanks for your answer. Not sure if i should go with some kind af lexan or real glass...

Finished machining the parts for the right walking beam assembly:

17711058hn.jpg


17711070br.jpg


17711093tg.jpg


Started drawing the front car in Sketchup yesterday, but it seemed there`s not much room in it. Had some nice weather today, so i decided to try it with a old seat and the chassis table. Well, there`s less room then i thought...

17711101ra.jpg


Here`s the sketch:

17711111jw.jpg


17711112na.jpg


17711114ha.jpg


17711115by.jpg


17711116zp.jpg
 

java

Expedition Leader
Whats the arm? Seems to eat a lot of real estate. All i know about cages is lots of triangles!
 
It`s a boom like on the newer JCB and Volvo skidsteers but with an additional pivot. It takes some room, but doesn`t matter with one seat and there`s no way to put in another one even without it.
 
Cut off the axle because there were some design flaws. One of them was too much play between both tubes:

17729877bc.jpg


17729879hu.jpg


The track tensioner:

17729882iq.jpg


Put it back on and put a track on to check for clearance:

17729883ln.jpg


17729885ut.jpg


17729887xc.jpg


Here you can see why i need to redo the track:

17729890zy.jpg
 

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