I tried the kit setup and the car felt nervous and twitchy.

Interesting... the stock setup is the starting point for most of us. It's both smooth and fast (although it could use a bit more turn-in in some cases I find). The car does feel great box-stock, at least rubber on carpet (dunno foams, sorry).

May I respectfully suggest you thoroughly check the mechanical integrity of your car and the assembly overall (nothing binding, everything symmetric, electronics setup properly with no crazy non-linearities, ...)? Although, given your sign-up date (you're an old fart like me it seems) I would tend to think you know how to build a car by now

I honestly believe xray's bone-stock setups are the best of the market... that's a big part of the xray appeal in my books: carefully build it bone-stock and you've got a weapon... so the above comes as a surprise...

We usually run higher ride height on black carpet to take a little bit of the grip away. Besides that box stock is a good starting point. What tires are you on?

If you're running in very high grip conditions often you may want to look into getting the solid aluminum chassis. (XRA301143)

Yep, the car is built correctly and is balanced. I don't have a super fast servo or anything so I can't figure it out. I let another driver try it and he had the same results.

To make a car safer and easier to drive, go thicker on the oils, raise the inner links and reduce the droop.

So try 500 shocks, 5 or 7k diff, 2mm links. 5mm ride height and 6/5 droop.

And from what I read on here, glue the hell out of the front tyres for the black American carpet.

RDodge, is doing work at the Birds. I'd like to meet you, I run in 25.5 Amateur.

Don't know what you look like though LOL

How much difference will I see going from an 14 to the new 17 in drivability and also running a monster 17.5 on crc black large track what's a good pinion size to start with and setup thanks

He's a semi taller skinny white kid with blonde hair. Look for the pits that are clean and organized. He's anal.

The world famous Robbie Dodge, at this years' snowbirds:

ok I saw him, I'll try to say hey and grab a pic

I made the Amain in my class, this Xray is awesome. Xrays are doing work at the Birds!

Has anyone done the switch just trying to see if it will be worth it to upgrade?

for reference there were A LOT of Xrays in the A mains at the Snowbird Nationals. I got to meet the Champion Alexander Hagberg, super awesome driver and nice guy, also met the team manager Drew Ellis. The support at the big races is awesome. Get one.

I also met Bobbie Dodge but didn't get to take a pic. Super cool dude as well. My friend Allen was cracking jokes making him crack up.

I have gone progressively faster with each car, but it has to be said that the last couple of cars have only had small changes.

If nothing else, you'll be starting with a newer car with less slop etc.

Hello. I just built my car and ran it for the first time yesterday. I'm running 17.5 with a 96t 64p spur gear. I jacked up the spur yesterday and I am looking to buy some spares. My track is out of them and so is A-main. I've heard that other brands will work. Where should I look?

axon fit
kawada fit
xenon doesn't fit, too thick