Korey,

Most important thing to look at is bump-steer.
Most likely in either flat or angled position you might get loads of bump, or you could virtually get it to zero bump.
Needless to say for ease of handling and consistency zero bumpsteer = best.

good luck.

very true for flat mounting but with angled mounting bump toe is naturally gone just from the verticle angle you get out of the turnbuckles. When you run angled servo,The turnbuckle is at the same angle as the upper arm. It is very hard to mess up:cool: Ackerman on the otherhand, you need to be carefull. too much can make the car a handfull. I try to get as much out as possible for carpet.

Yeah... the bump steer is pretty much gone. Just a tiny bit of bump in... but the crazy ackerman setup I know is going to make the car VERY interesting to drive... You know, the baaad kind of interesting haha.

In order to put an AE or CRC front end on the SP12X with the angled mounts I have to drill new holes from the servo mounts about 8mm back from the existing holes for their aluminum arm front end. I was thinking I had the bright idea to lay down the servo on the car with the CRC front end... but I guess I'll just have to stop by the hardware store and get a drill and countersink bit...

-Korey

Is any one running the Corally worlds front end on their SP12X?

If so does it bolt right on or is their some drilling that needs to be done (servo mounts etc)?

Thanks,

Rob

Atlas brushes, gold spring on Pos, copper spring on Neg. ;)

Korey, I have run the car for months with the servo flat. You just need to do a little work raising the ballstud enough to get bump steer out. I had to run the car setup a bit different than everyone else. cant quite say it had more or less steering than anyone else it was just "different". I just bought a new servo so I could try the angle mounts and I am quite interested what the difference will be.

I'm lazy and runing the original Corally front end.;)

Rob, to my knowledge Corally delivers the car built an all, so I'ld gather it bolds right on (front end for sure).
As far as the servo goes, I think they made a running change since their first releases as opposed to the Worlds car. The Later chassis have a litlle more distance between the servo mounting holes.

I'll see if I can get some more info on the chassis changes....

Yea, I ended up drilling the holes back 8mm from the rearmost servo mount holes. It gave much better geo with the angled mounts back. I had the flat servo setup fine as far as bumpsteer goes, but a lot of people don't pay much attention to the ackerman.

Like Jason was saying earlier, the crc front end has the ball studs closer to the center line of the car than the AE front end will make it have a lot mroe ackerman due to the short link. It makes the inside wheel turn A LOT more than the outside... making it drive really funky.

The angled servo mount setup is going to work good though. It has a much more acceptable amount of ackerman, and next to zero bump steer with very little effort.

After I have some time on the sp12X I'll post a setup for those looking for a starting point.

-Korey

I have just a US kit... not the worlds kit yet... So I'm not sure if they actually made different holes for the servo mounts yet. If you have the current euro or US spec kits you will have to drill the servo mount holes a little further back than what is already done for you.

-Korey

It certainly looks that way.

Thanks for the info on the front ends.

I was racing tonight a broke another of the stock steering knuckle arms.:flaming:

So I'm switching out the front end with the GENX one. I'll see how that works.:nod:

I also broke a t-bar have those been a problem on the car?:eek:

Thanks,

Rob

T bars are always something that can break. I usually check mine after every run for any stress marks or anything weird. I do know that on the sp12X the graphite part the tbar connects to in the rear pod is a weak point IF you use all three screws. It seems like the current trend is to go with a thinner tbar and running only 2 screws in the tbar to help smooth the car over bumps and such, even on high grip carpet.

-Korey

Hey does anyone know if the body holes for a cefx and a crc 3.2r are in the same locations?

I was looking at a body for sale but it has the holes pre-drilled in it and was curious if it would fit? Thanks..

rc12l4 gearing help
 

What's a good starting gear ratio for a P2K2 pro or C027 on a small semi technical track. By small I mean 6 sec. laps with a 19turn.

Thanks Jack, and since your giving out all of this good info, what would be a good starting rollout, 80X40 track?
:D