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Tagged: unimog
- This topic has 86 replies, 6 voices, and was last updated 2 months ago by ScaleAddict.
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April 4, 2020 at 12:48 am #107297Member
ScaleAddict
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After more than a year without trails,finally did it!!
Took the JK, the M548 and the ‘mog to drive a little. Ended driving the Unimog a lot more than the others
Tried an easy line with sucess and was doing slightly harder lines and the truck was doing great…ended in one that I was positive that will fail…but the truck managed to climb. In 1st gear of course
April 5, 2020 at 2:56 pm #107304Membermark
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Those axles are seriously amazing.
That 1st pic outside, wow.April 6, 2020 at 2:49 pm #107312SysopRetrocosm
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May 17, 2020 at 10:48 pm #107588MemberScaleAddict
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Thanks guys!
well, to the news:
that previous axle sparked an old idea of making 100% printed axles. About 4 years ago I worked on that, having housings printed but the big scx10 internals didn’t allowed to do them small and nice. Fast forward to the present and adding to my improved 3d skills,we have more choice
Someone suggested TRX4 diff gears and using lockable diff. Was a great idea but the parts are too expensive.Remember that I need 4 sets to make 3 axles. Went to scx10.2 gears from Ebay and they seem good, nice machining and finish
The issue was doing the gear mesh because of the “high pinion” feature but after a few tries, is done
Doesn’t seems but it works:
I’m aiming for this,2 halves:
The angle on the pinions is because torque tubes are a possibility. I’m just waiting for parts to arrive to confirm if it’s possible
May 22, 2020 at 8:30 am #107608SysopRetrocosm
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May 22, 2020 at 7:54 pm #107625MemberScaleAddict
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Thanks! i try my best
I wanted to do a smaller pumpkin because it just looks better. There’s quite a difference between scx10 and scx10.2 gears:
Is 11mm actually because because of the design I’m trying to replicate, mine wouldn’t be 11mm smaller…
June 14, 2020 at 7:23 pm #107703MemberScaleAddict
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Hi,
This is taking more time and thought that I’ve expected. Torquetubes are cool but now I’m seeing why I only saw one project with them. There’s a couple of things to consider. Anyway, managed to print the prototype for the front axle. I’m still waiting for the other diff gears and bearings to arrive
There’s the torquetube and the next thing to do is the spherical chassis mount…but need to center the transfer case outputs first. It’s not a problem with normal driveshafts but if the axle diff is centered,so must be the transfer case
July 19, 2020 at 2:33 pm #107764MemberScaleAddict
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Did the skidplate and mount the transfer box as centered as I could. The torquetubes require that. The skidplate sits lower than the older one but I think that wouldn’t be a problem, this is a scale truck afterall
Quick mockup:
Missed the torquetube length by a couple of milimeters but the real ones will be machined from aluminium so it’s fine
The rear trackbar mounts are in place. Need to redo the motor mount and wait for the diff bearings to arrive. My plane is to complete and mount an axle before moving to the next one
August 7, 2020 at 11:01 pm #107808MemberScaleAddict
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Hi!
Quite slow but I don’t gave up on this. Even if it’s harder than I thought….(so that’s why few people try to do this…hmmmmm)
Still waiting for bearings and better filament to print the axles but in the meanwhile, did a new motor mount because the old one will interfere with the front torquetube. Speaking of torquetubes, started on the definitive ones, printed one at first to confirm the length and if everything worked.
So, now in aluminium:
August 16, 2020 at 11:34 am #107843MemberScaleAddict
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Hi,
Slow progress…still waiting for parts. In the meanwhile, tried to improve the front axle. It had regular shock/link mounts but I would need space for the shocks. Besides, these type of mounts are sensible to print orientation, making the rest of the axle stronger, leaves these weak
Up is new, down is old. The mount is now a single hole where the shock eyelet bolts directly. This and every threaded hole will take m3 helicoils
August 20, 2020 at 11:05 am #107860MemberScaleAddict
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Yesterday did one that was on my head for a while: How to extend the diff pinion shaft.
On SCX10 gears, this would be easier: a longer shaft where the pinion fit…the pinion on scx10.2 has the shaft incorporated. So, I had the option of welding a shaft but would have to repeat that if I wanted to change the pinion. There was not space inside the torquetube to do something with a grub screw holding the 2 parts
So, the idea replaces the grub screw with a 2.5mm metal rod,hammered in the ends, like a rivet. This way, I can replace the pinion shaft and bearings
September 1, 2020 at 3:59 pm #107886SysopRetrocosm
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September 19, 2020 at 1:36 pm #107931MemberScaleAddict
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Wow, some really impressive work going on here, keep at it it’s fascinating to see these custom made parts.
Thank you! I’m trying my best .
Well. The bearings finally came ! just ordered them in the 1st of May, no big deal 🙂
With those, I could fit the gears properly,see where they are rubbing and also fitted the driveshafts
Also, did these reinforcement rods, like the real one has
September 25, 2020 at 2:15 pm #107954MemberScaleAddict
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I think it could be called a milestone:
September 26, 2020 at 9:47 pm #107958MemberScaleAddict
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Close-up of the housing
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