Oshkosh 10x10 PLS

[Zerobricks]

Amazing model! This has to be your best model so far. I was surprised that 6 L motors were enough to move such a massive vehicle. What are the different ratios of the two gears?

Having had experiences with the Fox which had an XL motor for each wheel, I was also a bit worried 6L motors may be a bit underpowered, but as you can see it has plenty of torque.

The gear ratios are as following:

High gear: 1:3 - Direct drive all the way to the portal gears. Its actually very fast ratio for such large wheels.

Low gear: 1:9 - The differential casing takes on 3x torque of 3L motors or in short 9x torque of a single L motor, a quick calculation reveals its being pounded by a torque of over 160N/cm

Great MOC Zblj!!

Finally we can see it in actions...and it perform really well, way better than I thought.

I really like the longitudinal stiffness of the suspensions, I built a similar configurations some times ago (in the Centurion), but they tended to deform a lot.

So, again, amazing MOC!

Thanks, i was also suprised how well and smooth the driveline works even though there is almost a meter of axles per side. The chassis could be a bit more stiff, if possible I would have used more frame pieces, but the spring and steering system placements kept me from adding more.

Great work! Looks very powerful!

Agreed, thank you I think there will be another smaller Oshkosh model coming soon.

PS. I also added a more detailed description on my blog.

Edited March 24, 2016 by Zblj

[Lucio Switch]

Thanks, i was also suprised how well and smooth the driveline works even though there is almost a meter of axles per side. The chassis could be a bit more stiff, if possible I would have used more frame pieces, but the spring and steering system placements kept me from adding more.

Some people thinks that building big have the result of a lot of room for functions, that is in part true, but increasing dimensions means increasing weight, so, build a stiff chassis could be more challenging than build the subassemblies.

Anyway, I saw that it tend to twist a bit, but that happen even in real trucks....I will be more than happy with your result.

Edited March 25, 2016 by Lucio Switch