RC Tank Warfare community hobby forum

Actual Leopard 2 chassis has torsion bar suspension, actual Abrams chassis has torsion bar suspension. Both had an off-set road wheels. The Challenger is different as it has a hydropneumatic suspension. Merkava's had similar configuration as the Challenger and there fore road wheels are all aligned. T-72 I think are torsion bar suspension.

I wonder if it is possible to simulate hydropneumatic suspension using micro linear servos....

Challenger 2 uses hydrogas suspension & not hydro pneumatic, the Japanese I think are the only ones these days that use hydro pneumatic

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Simon M wrote:Challenger 2 uses hydrogas suspension & not hydro pneumatic, the Japanese I think are the only ones these days that use hydro pneumatic

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Hi Simon, just clarifying I thought the term hydropneumatic is a generic term for gas/liquid combination and I understand that this is the suspension of the Challenger 2. However due to added weight of the newer armour the suspension was uprated with hydrogas (liquid and nitrogen combination) to beef it up. Does the old hydropneumatic suspension on the challenger 2 uses the hydraulics of the engine or is it self contained? I understand that the Hydrogas is self contained system. Thats the only difference I can think of (use of nitrogen gas on hydragas/hydrogas system). In principle its a combination of fluid and gas thus hydro pneumatic. Please feel free to correct as your the expert on this.

They are self contained & have no input from the driver unlike the Japanese tanks where they can adjust the height of the vehicle, in some of the Challengers that are kicking around here are knackered & worn out & desperately need upgrading, its not unusual to see tge rear duspension units virtually at their minimum travel there were several upgrade options about including an upgraded suspension & it was rumoured that hydro pneumatic was considered, the ability to alter the vehicle height when fitted with the various armour packages would be a good idea but only time will tell, personally as much as o love the Chally & when I was on them they were top of their game but now they are outdated, if we consider the M1 has SEP3 coming out & Leopard 2a7 has been seen with units on the ranges I honestly think if we don't hurry up & upgrade we will have to consider a new type



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Come to think of it, I wonder if it's possible to do oiled filled dampers in 1/16th!

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Thanks Simon, I read on some site that the Challenger 2 has a hydropneumatic suspension but this is not accurate. As you have mentioned its HYDROGAS and this is the actual suspension. To differentiate the two, HYDROPNEUMATIC is similar to HYDROGAS in its principle and basic function which is a combination of fluid and gas. HYDROPNEUMATIC is different in that it utilise a HYDRAULIC PUMP to adjust the hydraulic pressure to lower or higher the ride as well as stiffening and softening the suspension. On the other hand, HYDROGAS suspension is self contained or "simplified" (with out the hydraulic pump) combination of fluid and gas thus making it unable to adjust the height, stiffness or softness of the suspension. I think this is less likely to have system failure especially in combat. Type 90 has a hydropneumatic suspension as it can adjust ride height as well as tune the softness and hardness of the suspension system.

Simon M wrote:Come to think of it, I wonder if it's possible to do oiled filled dampers in 1/16th!

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You can, but you need a spring for it to work. Dampers are just there to absorb the "bounce" of the spring. If you want to replicate a proper Hydrogas suspension you need to pressurise the system like the real thing as gas will take the role of the spring. It would be cool if somebody can do this at this scale.

I do have a couple of oil filled dampers & yes they have springs but there a little big, would be good though, see if it's as effective as the full size lol

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And everyone used to laugh at me when I drove my Austin Allegro with it's hydropneumatic suspension.