When in doubt bring the 5 tons out

Here's a video of 2 900 series 5 tons the first one is an a1 and the second is an a2 going up a muddy hill it's alot steeper then it looks. And they have 4000 gallons of water which is over 16 tons of weight.

[@MrKswildman]

I have a 5 ton bridge truck with factory lockers. It's a beast and the tank is massive!

[@leopic501]

In this type of application i would put a set of rubber tracks over wheels that would give you double the traction and make the truck highly mobile leave a small area for operator error.

[@charliefoxtrotthe3rd335]

I am not sure why the rear wheels fail to turn when the set in front of them do. If you watch, while the very back wheels don't turn, the thing just sits there. When the back two finally start to work, the truck drive off like it's no big deal. Aren't the axles supposed to lock? I thought 6x6 means power to all wheels, all the time. If they would get that little issue solved, these things would be unstoppable.

[@thomasleonard2564]

Charlie Foxtrot The 3rd I don't think he had diff lock on that's why if I remember diff lock makes all wheels spin at the same time

[@NH2112]

There’s no locking power divider between the front & rear axles like you have on a semi. Basically, when in 6x6 the front drive axle is effectively an open diff between the transfer case and rear drive axle.

[@blinko656]

I just built one of these, same tank. I don't think I would ever take it that hill with with out a dozer. Im a chicken.. Mine is for sale... New engine.

[@legolubos]

blinko656

[@teamidris]

Well, it only goes well or really badly, so I don't blame you :o)

[@legolubos]

Tatra Is offroad king

[@PlanoRednecks]

If you liked that video, You'll love this one! kzbin.info/www/bejne/oHzZXn-lZ86bbrc

[@Slim_Slid]

The Freightliner and the AM General/BMY Harsco trucks are not even in the same Category. The M915-M920 Trucks are 14-19 Ton Hauler Trucks.The M915-M916 A2 and A3 are 26-27 Ton Hauler Trucks,the previous ones before the A2-A3 have a NTC-400 Cummins,the A2-A3 are Series 60 Detroit. The M939 Trucks are all 5 Ton Trucks,M923-M944,and the early ones had a NHC-250 Cummins.The A2's always had the 6CTA Cummins.

[@383lt1impala]

SS 81 yea I know I owned a bunch of 5 tons and the m916 series

[@Slim_Slid]

@@383lt1impala Well,the M916 is not a 5 Ton,yes both of them start with "M9",but they are not the same,two totally different trucks.I own a entire field of 5 Ton Trucks and several M915-M919 Trucks.

[@sw923]

The second one looks like a Freightliner , not like any "900" series 5 ton I have seen or owned. Maybe it has a freightliner cab on a "900" series chassis

[@383lt1impala]

Yeah that’s correct we had it built that way in 2005

[@darklordchris]

Not to start a "Which is better then war" but I noticed on our US Military 6x6 8x8 ect. that even when the axles are locked, you will still notice one side still spins more then the other when it should be equal between the wheels. But on the other hand I notice that the Russian Military 6x6 8x8 ect. in the same situation their axles are fully locked no matter what even during wheel spin. Just find it odd that our military axles don't lock 100% like they are supposed be.

[@383lt1impala]

darklordchris I noticed that too. But I'm running m916a1 and a3s now and they are definitely locked. Almost like a spool.

[@darklordchris]

I don't doubt it and I know they are locked, You can even hear the locker engage when the switch is flipped. Just like in the video, when I was deployed to Pakistan I was playing with ours on the Hummer course, and when we were on hills, I noticed the wheels do exactly like they did in this video and many other(We took turns driving). But that seems to be a thing on our Heavy Military trucks, they all have that slight slip like the axles are only 90-95% locked, from the late 60's Deuces to the 90's and 2000's: 5t, HET M1070, HEMTT's they all have that slight slip of the axle in certain conditions.

[@bigmario768]

It's because they aren't actually locking diffs they are interlocking diffs so when apply the interlocking diffs they send the power to all the diffs but not all the wheels. Which I personally think isn't that great I would of preferred manual locking hubs aswell as the interlocking diffs minimum.

[@edwardbergman3122]

It is supposed to keep it from have to much stress on a axle so you don't break axle shafts but I don't think it would really matter

[@l337pwnage]

+Ed lockers break a lot of axles. Automatic ones more so than manual ones because you can't shut them off, tho. An open diff splits the torque 50/50, a full locker can put 100% of the torque to one axle. Also, lockers can make wheel hop more common, which breaks drive shafts. It's a trade off.

[@thermidorlevrai65]

no diff lock?

[@383lt1impala]

Thermidor le vrai no locker

[@thermidorlevrai65]

@@383lt1impala they should try ti put it it could be useful and it make those truck invincible

[@383lt1impala]

Thermidor le vrai we tried that but the diffs end up breaking. Since these trucks are rated for 5 tons and we load them with 20+ tons of metal tank and the water. But we don’t run these trucks any more we have freightliner m916a3 trucks now.

[@thermidorlevrai65]

@@383lt1impala good to know