yup i had two diff size bottom spring reatainers and car would jump like crap took a few weeks to figure out.

Well in the rear one the a arms go down farther than the other but i think it was just my driving that day. I just wanted to know because that center mod always looked useless to me.

Have not tried yet , if I did ?

Would be on my B44 ....

So I pick up a used 4.2 about a month ago. As Im still deployed, I have been trolling the forums for hop-ups and set-ups and the like. I would like some input on a couple parts and also possibly a starting point for set up.
Track is medium to high traction and lap times are about 15-17 seconds. I will be running a Tekin RS Pro and 10.5 motor. Tires start at a bar style and wind up running slicks by the mains.

I am looking at the Avid Centering Motor mount spacer and the ESC center deck.

Being as the buggy is narrow already, putting some ballast weight on the RX side has always been the thing to do. I like the idea of centering everything as much as possible so that is why I am looking at these in particular.

For set up, my b4 was very low on rear traction so here is what I did.
Inner hole on ball studs with 3 washers, outer or middle hole on hubs, 2*toe with 1* AS in the rear.

Just wondering where I should start with the new kit as far as set up and advantages of the above parts?

I didn't mean that you tried these specifically but rather that you had done extensive piston testing. I was saying that due to my lack of track time I don't have the ability to test like you did...and even if I did I'm not that great a driver so my feedback may not be all that useful.

For medium/high traction smallish indoor clay track I would start with the Cav Portland Spring Shootout setup -- http://www.petitrc.com/setup/associa...Hobby20130519/

What it doesn't say on that sheet is to run the carbon front arms, caster blocks, top plate and shaved u-brace -- stiffens things up considerably.

After getting the right tires/inserts, I would get that carbon, then go ESC deck. Last thing I would do is motor centering -- I have that mod, my son does not. Otherwise our cars are very close to identical and I can't notice that mine is more balanced.

Before springing for the AE shelf, etc, take a look at Vision RC's stuff -- very well thought out and executed carbon shelf, battery strap, chassis stiffener and steering rack. Prices are not bad either.

We raced the chassis stiffeners for the first time last week. I'm still half a second off the fastest guys in 17.5 but my son and I had our best night of racing in memory and it was because we were far more consistent than usual -- the cars seemed very predictable and were easier to drive. TQ went to a B4.2 with the stiffeners. So the stiffeners are staying in our rigs for the indoor season ...

Would a b4.1 wc setup work on the b4.2? I'm about to start building mine and for the most part I like my b4.1 setup.

Hey guys, I'm just getting into 2wd and local track runs 17.5 blinky on carpet and I am struggling to choose between AE b4.2, losi 22 2.0, and Schumacher cougar kr. Would love some pros and cons to be persuaded one way or the other.

Only real difference between the .1 and the .2 is the shocks, so yes. I got to run Friday, and the car was pretty decent.

1.6 stock pistons all the way around
32.5F/30R
No anti-squat
If you're running stock the you may want to add 1-1.5 deg of anti-squat.

Finished up a new buggy! Just need to get it dirty and break it in.

:O are you sure that the carbon battery brace won't short out your battery? (afaik carbon does conduct electricity!)

Agreed, Dremel reliefs int he brace so that there's no chance of your bullet connectors touching the brace.

While you're at it, resolder those connectors as well. Doesn't look like you got them hot enough, or tinned the wire.

I will re solder the battery leads guys.
As far as the carbon shorting out on the battery. I really don't want to run it to far forward. So I will probably cut down a stack batt. Strap since there is more clearance.
Thanks for the input guys.

Looking good Kenneth!