Jerry Matoon
Well-Known Member
Are you talking RC Monster truck or 1:1 cars and trucks?
Jerry
Jerry
kevinatfms
Well-Known Member
on cars(what i work on everyday and wrench on my own road course mustang) the basic principle of the 4 link on a solid axle car is obsolete compared to a 3 link or IRS setup. the panhard rod can be used on both a 3 link and 4 link setup to control the roll center of the rear end during corner loads.
most cars that do run a panhard rod use them because of inconsistent bushing deflection and improper ride characteristics. my mustang for instance is a perfect example. the 3 link benefits over the 4 link are that you have a more plush ride and control over the roll center of the rear in relation to the suspension during corner loads. as the cars weight shifts the 3 link can react quicker and the driver can adjust accordingly since the rear is centered by the panhard rod. the 4 link setup if "soft" will float around and hunt for traction during high corner loads. both setups are inferior to the IRS cars but right now there are multiple setups that are equal to an IRS in terms of counteracting corner loads.
if your looking for an rc situation i would think that a monster truck would benefit from a 4 link due to suspension design and travel. most onroad cars have limited suspension travel while monster trucks have almost unlimited suspension travel making the 4 link and ideal suspension setup. the 3 link on a full travel suspension would limit the amount of travel for jumps and such but also make the truck unstable during opposite side load off camber situations. most monster jam trucks exhibit this when they hit a set of cars off to one side and the truck wants to catch and roll, if they had a 3 link it would always be on the lid.
most cars that do run a panhard rod use them because of inconsistent bushing deflection and improper ride characteristics. my mustang for instance is a perfect example. the 3 link benefits over the 4 link are that you have a more plush ride and control over the roll center of the rear in relation to the suspension during corner loads. as the cars weight shifts the 3 link can react quicker and the driver can adjust accordingly since the rear is centered by the panhard rod. the 4 link setup if "soft" will float around and hunt for traction during high corner loads. both setups are inferior to the IRS cars but right now there are multiple setups that are equal to an IRS in terms of counteracting corner loads.
if your looking for an rc situation i would think that a monster truck would benefit from a 4 link due to suspension design and travel. most onroad cars have limited suspension travel while monster trucks have almost unlimited suspension travel making the 4 link and ideal suspension setup. the 3 link on a full travel suspension would limit the amount of travel for jumps and such but also make the truck unstable during opposite side load off camber situations. most monster jam trucks exhibit this when they hit a set of cars off to one side and the truck wants to catch and roll, if they had a 3 link it would always be on the lid.
kevinatfms
Well-Known Member
also forgot to put that a panhard equipped cars rear end with enough suspension travel will offset side to side depending on mounting during high suspension loads since the panhard bar will make the rearend arch during travel. that can upset the handling characteristics of any car no matter how well the suspension is setup.
highroller
Well-Known Member
On a 1:1 the front works well with a track bar and a steering link that are the same length/ piviot points so you control bump steer. (triangulated fronts with a steering box isn't going to happen, you need hydro steering or something along those lines) The rear also works good with a track bar as trucks with triangulated upper links usally dont get along well with side mounted fuel tanks. I'm talking lifted trucks here.
Thanks for the info.
Here is what I got so far.
The pan hard bar is best suited to situations where control is needed such as in the corners.
But it limits the suspension so off road a 4 link set up is better at least in the rear. In the front the pan hard could be better because of the control.
Here is what I got so far.
The pan hard bar is best suited to situations where control is needed such as in the corners.
But it limits the suspension so off road a 4 link set up is better at least in the rear. In the front the pan hard could be better because of the control.