Four Wheel Steering BL Savage XL on 8S & 1521

[Slowkrawl]

Jeebus that motor is huge in there! Looks good man, let us know how the 4ws works. My only worry is that at high speed it might roll and yard-sale your truck?

[Finnster]

Originally Posted by Freezebyte

Very nice work man, you could rock climb with that thing now!

Those don't look like 40 series tires though...

Trust me they are. The truck is just that big.
No where near like Chris's crawlers tho. Great for ground pounding and hill climbs tho.

Originally Posted by JThiessen

The symmetry of the Savage almost beg's for a mod like this. Have you noticed any issues with servo timing? It would be ultra cool to be able to have a way to reduce the steering rate based on speed - which could possibly be done via motor rpm?

Its really easy actually to incorporate. There is no reason subtle design mods to aftermarket TVPs couldn't be made to make a rear SS a drop-in conversion. All that is really needed is a slight reworking of the rear section for turnbuckle clearance, and a couple mounting holes provided for for the steering rack brace and servo mounts. Would not interfere with standard config in anyway.

As far as servos go, no probs so far. Its mostly in radio programming. The R is setup to move just a fraction of the F, and this rate is adj. As far as spd sensistive steering, seems like some external hardware would be needed. Maybe the thing above would work. IDK. You can adj the exponential of the str to give a progressive feel to any str.

Originally Posted by Slowkrawl

Jeebus that motor is huge in there! Looks good man, let us know how the 4ws works. My only worry is that at high speed it might roll and yard-sale your truck?

Eye, she's a mighty beast, that one. And to think I was once worried it would be too small.
As said, prob not what you want for real high speed antics, but any Savage seems a poor platform for a spd demon. It actually it is a bit less rollover prone so far as the rear end kicks out much more on turning and tends to slide more so than catch and flip. None the less, the Sav is just a hi-CoG platform and rolls far easier than say a truggy, and maybe even a Revo.