11 replies to this topic

[Cheater]

When I hear the term "rear steer", this isn't what I think of...

 

https://www.facebook.com/photo.php?v=612677572154862

 

Anone have an explanation for the electronic bits mounted mid-chassis?

 

Here's the developer's WEBSITE for the Prototype Project electronic rear-wheel-steering Hornet LPM RS (rear servo).

[Tex]

Always a better mousetrap.

 

I bet that thing would FLY with a JKHR in it!

[Uncle Fred]

Are you making fun of us again?

[Matt Sheldon]

Love the ingenuity, but maybe a little too RC for me.

 

Cheater - Looks like a servo that is activated by a limit switch and or a part present sensor built into the guide flag area. When the flag hits the contact it sends the signal through the ecm (might be labeled something different) and then to the servo.

 

Edit - Watching the video again it appears the sensor is activated by the guide flag nut.

[Cheater]

Looks like you're right, Matt.

 

Here's the PDF for the concept, only available in German. Seems to confirm your thinking.

 

 HORNET_LMP_RS.pdf   905.69KB   25 downloads

 

 

[BillyBob]

Thought rear steer was when the guide was mounted behind the front axle..

[Cap Henry]

That's basically how the Twistamon chassis worked without a servo...

[Matt Sheldon]

That I did not know

[Cap Henry]

That was the point of the big outward bent U rails, allowed the car to twist the motorbox. Those cars require pretty strong bracket reinforcing do to all the pressure on the bracket. 

 

Obviously it's not quite as smooth or consistent as a servo LOL 

[Gator Bob]

Cap,
Never seen it up close .... How do you/they get so much rear steer on dirt?
 
OMG ... On TV the DLMs it looks like the left rear moves forward about 3 inches or more.
 
On asphalt I used to run one stock drilled out and soaked rubber bushing and one hard poly bushing on the lower trailing arms but that was only about 1/2" of deflection.

[Cap Henry]

Only latemodels and big block modifieds do that, I believe they actually have a shock that controls it. I don't know a whole lot about them. But at some point they changed from the rearend not moving much and hiking the LF tire in the air to LR moving way ahead and burying the cars on the rf tire.

The cars I run don't rear steer

[Gator Bob]

On asphalt that set-up made the car really loose going in on the brake but with a slight trail brake it rolled the center well and then hammer down big bite coming off.

The loose in could be somewhat controlled with less of a tie-down valved shock in the LR and backing up the corner a little using less LR brake bias and less brake pedal on the later part of entry..

 

What a freakin blast .. Cap, don't get old.