They do not allow for a C hub ball stud location, only A or B. The Yaiba aluminum hubs allow for all three.

http://www.tresrey-usa.com/yaiba-rac...num-rear-hubs/

Yes the exotek ones are designed for the A hub location. But isnt the B hud position just the holes in between the A hub? so same height. im wondering if you dont use the included washer and a short neck ball stud how close that would be to a "C" location? Otherwise some dremeling could allow it if you want to run that height but i dont plan on running C hubs anytime soon.

You can have the c hub height with the exotek hubs. You can run a short neck ball stud and it will be the same height as the c hubs.

setting up my kids b4.2 shocks, kit starts with:

3.00lbs front 30wt black springs
2.10lbs rear 30wt white springs

In the b4.1 we run all the .2 upgrades with the BB shocks built to:

3.15lbs front 30wt green springs
1.90lbs rear 27.5wt black springs

We are a little stiffer in front and softer in the rear to get more low speed steering which is working pretty good right now but still could use more steering not less. Any thougths?

track is medium-high bite, small clay indoor track. Tire of choice for most guys is gold bar codes or mc suburbs.

Run a looser diff, and slipper set accordingly. I liked the green front/white rear combo myself, others do the green/green springs.

This is the tray I'm going to try with a full size pack. Made it from 1/16" delrin and used longer screws and aluminum spacers from McMaster

What's all the hype with center mounted ESC locations all of a sudden? Some of these installs look nice and professional but is it actually better? I would have guessed putting weight higher on the chassis would cause unwanted roll.

im not sure myself. i run a tekin rs, that this dont weigh anything to start with

one of the biggest things for me is the cleaner wiring and less wire. im thinking i can run the transponder under the battery and mount it where the esc used to be

I guess if Cav does something then everyone wants too try it. I tried this over a yr ago and went back to normal setup

Cavalieri did it at Reedy. So, it must be awesome, right?

I hear Cav is now running the ESC on top of the servo now and the receiver under the Lipo. Dialed!

im on it, will report back

Thanks guys, I had a good time and the car ran good. Ended up with a few high 20 second laps and mid 21 average...we will be heading back ina few weeks and I will try some different shock setups...

C hub lowers roll center. It's right in the description of the part. This produces MORE roll, not less.

A lower roll center produces more roll. A higher roll center produces less roll. It can help with infield grip because of more initial chassis roll at lower speeds.

My experience was that A hubs work better when using green springs on medium to low traction tracks because the use of the softer green spring already produces plenty of chassis roll. If you find yourself running white springs in the rear, such as a super sticky clay track, the C hubs are a better option than running a stack of washers that increase your chance of snapping the inside ball stud off.

I have found the C hubs to be completely worthless with green rear springs. If you note, most of the team setups that run C hubs run white springs. Food for though.