According to Associated's brochure, the new V2 Steering Rack has "optimized Ackermann and steering rate for a more consistent steering feel through the entire corner." What it all means is that you now have the ability to tune the steering rate for the track conditions without adversely affecting your Toe settings.
Associated also updated the B64 steering arms to a V2 steering arm to compliment the new steering rack.
Associated recommends the Graphite Adjustable Bellcrank Input Arm as well as a 20mm long servo horn.
To make this updated to your B64 or B64D you need the following parts:
Graphite Adjustable Bellcrank Input Arm
V2 Steering Rack
V2 Steering Arm
20mm long servo with 25t spline
or
20mm long servo with 23t spline
The spline count on the servo horn depends on your steering servo's output gear spline count. Most servos are 25 tooth, but there are some popular brands that still make their servos with 23 tooth output splines.
Since the input arm and steering arms are carbon, I should prep them before I install them. Tony Phalen over at CompetitionX has a great video on how to do this properly.
I've also decided to add some bling to my B64D with Revolution Design's Aluminum Steering Bellcrank Set #RDRP0401-BLU. It does stiffen up the steering, but also puts more stress on all the connected pieces. This is especially true if you're a hack driver like I am. All the cartwheels are going to tweak something. . .
Once I had the whole steering system installed I had to add four 2mm ball-stud spacers to the four screws that secure the front chassis brace. As well, because I added 2mm, I had to change the screws from M3x8mm flat head and button head to M3x10mm flat head screws and M3x10mm button head screws to still get the proper amount of thread insertion. This helped the chassis brace clear the steering linkage.
Another useful video is how to set the steering servo by Jason at Short Course World. This will help you get a proper zero point from which you can fine tune the trim and the buggy goes straight.
My final tip is Blue Loctite. I use it on all the screws that thread into metal threads as well as any nuts. I personally like Loctite 248 because it comes as a stick versus the fluid kind.
Have fun and keep it rubber side down!
