WillS

iTrader: (32)

In testing we are seeing no need to go to the longer arms. The YZ arms are providing enough traction and stability.

Motorman007

iTrader: (89)

THANK Sir.

Could you post your high med traction setup please sir

WillS

iTrader: (32)

Try this one to start.

mes

The longer arms are great on astroturf, they make car even more stable and less prone to traction rolling. In these conditions, the front gullwing set-up will also be interesting for you.
If traction is not that high, you will be good with the std arms.

In case you want to convert your rear end, it is:

B2-008R and
B2-010RB

Motorman007

iTrader: (89)

Thanks

Wills

And

Mes.

afm223

iTrader: (5)

I just started building my YZ-2 yesterday. I bought the ball diff, but when I assembled the gearbox there is a ton of side to side play in the diff. What shims are you guys using to eliminate this? Also are there any other parts needed when using the ball diff? Also, are the machined pistons a worthwhile upgrade? Trying to just make one more order with A-Main. I am looking forward to getting this on the track next Friday night at LSR.

Randy_Pike

iTrader: (6)

I'm actually running the gear diff in mine at the moment with 2k fluid and am happy so far. Note that I'm on a track that does run slicks.

Avid 1.6x2 fronts, and 1.7x2 rears is what I have in my car. They work great.

jake alton

I think it takes .2mm of shims on each side of the ball diff. May want to get .1mm shims to set correctly.

brew99

iTrader: (6)

Mes....Are the longer rear arms the B2-008r or the B4-008r? All the set-up sheets I've seen seem to have the arms from the B-Max4 not the 2wd? I have no idea what the differences are, just want to order the correct ones

MarkA

iTrader: (21)

The B4-008r arms are the wider ones. You need the Bmax2 rear driveshafts to make them work. My experience has been that a track has to be at a capital "H" level of high-bite for them to actually be an improvement though - they're not something you need to change just for the sake of change.

brew99

iTrader: (6)

OK thanks MarkA...Can I use the Bmax2 dogbones (B2-010RB) with the longer A-arms, or do I need to get the entire drive line (Out of Stock at A-main now)?

MarkA

iTrader: (21)

The outer axle should be the same so yes, you could change only the bones. However, if your existing setup has seen any significant track time, especially on high grip, I would recommend getting new BM-010TPC pins/joints at the same time as you change those bones.

afm223

iTrader: (5)

Thanks, I will order up some .1 shims. They come in a 10 pack so I should be set.

brew99

iTrader: (6)

perfect, thanks again MarkA....gonna do that then as I run on commercial grade real carpet, which is quite high bite for sure. It's a new build, just want it as an option

Motorman007

iTrader: (89)

You have the part number for the shims