Rockers definitions, long and progressive. help

[SpeedAssault]

I have a custom build 1/5 that I want to switch to horizontal shocks using rockers like the revo. I think I need Progressive and not the long travel for my on road .

Is there an expert on ROCKERS ?
WHat Rocker options are there and for what use ?
Obviously long rockers are for long travel suspension

thank you
last PIC is mine

[shaunjohnson]

i know that you will need a lot stronger shocks/springs because of the mechanical advantage the rockers give you.
longer travel is possible because of the mechanical advantage and progressive hardness is also possible if you are a guru at CAD or can get your head around the scientific shape of the rockers.

them pics are real perdy there

[SpeedAssault]

Originally Posted by shaunjohnson

i know that you will need a lot stronger shocks/springs because of the mechanical advantage the rockers give you.
longer travel is possible because of the mechanical advantage and progressive hardness is also possible if you are a guru at CAD or can get your head around the scientific shape of the rockers.

them pics are real perdy there

I thought my Large Losi 8 shocks would be overkill, no?
or are you saying I need stronger shocks than the revo ?
I dont need long travel since it's a street car

any recommendations

[JThiessen]

First thing you should do is measure the amount of travel that you want to have - then equate that to what ever Rocker the revo has that matches best.

[simplechamp]

Originally Posted by SpeedAssault

I thought my Large Losi 8 shocks would be overkill, no?
or are you saying I need stronger shocks than the revo ?
I dont need long travel since it's a street car

any recommendations

The rocker is basically a lever/fulcrum. On one side (suspension arm/wheel) the range of motion is greater, and less force is applied to move through that range. On the other side (shock side) the range of motion is much less, but that force is concentrated more. It's just converting low force, high motion to high force, low motion. All it means is that the springs need to be stiffer and shock bodies/shafts need to be shorter than if you were using the same shock in a normal setup. I suppose the shock would need to be a bit tougher, but it's more the springs. The Revo shocks were built to be used this way, and the springs are made to handle the stronger force, so you'll be fine.

[shaunjohnson]

hmmmm...just had a brain fart...
you need bugger all travel right?
now...if you get the traxxas long travel rockers for the revo.
then put them in backwards, this will allow you to use the 8ight shocks as the travel on the shock side will be greater, but the travel on the pushrod side wont be very much, and since you dont need much then it should be fine.