Bump steer is the difference, If you put the servo flat and push down on the front end the tires will toe in. And if the servo is at an angle and you push down the front tires will stay straight.

I took a double dose of airborn. That stuff works good. At least on head colds.
Not sure if it will help the flu. Might try it?

hey everyone im just getting back in to racing 12 scale since last year and i was wondering if anyone would have a setup for a L4 on a low to med bite and wat kind of tires would i want to get to, and i would be running stock.
thanks jordan

does anyone race 12th scale outdoors if so can i get a setup for an L4

hey Wes, hope this helps

#1 alot of what your looking is way deep in this thread. i would contact Josh Cyrul if you want more solid answer. he has probably run near every 1/12 frontend combo in the last ten???+ years. His latest car has the AE Dyn frontend with a laydown servo. i believe he ran it that way at the IIC and Cleveland.

i tried the servo layed down with the Dyn front on a 3.1 CK years ago on carpet, didn't like it, went back to angled. i only tried it because i was told by a pro-driver that with the laydown servo the L/R wheels turn at the same angles (no ackerman), reducing speed scrub, faster corner speed, etc. i can't recall what the effects were for me, but that i didn't like it.

CRC may have some insight info since some run the servo angled or flat with the AE Dyn frontend from race to race.

i have a notepad document where i cut and pasted info in to. don't know if all are dead-on correct?
- angled, gives you more initial turn in
- angled on asphalt and flat on carpet
- flat, need long offset ball studs for your steering spindles to correct
the bump steer
- flat, lowers CG & eliminate mounting hardware
- flat, reduces slip angle of the inside tire on carpet. more efficient/faster
- flat, less ackerman and more stable and efficient in the corners.
- flat, on hi traction tracks...you don't need ackerman of angled config
- flat, more steering in 180s and less in sweepers
- angled, less steering in 180s and more in sweepers.
- flat, on a tight tracks

#2 nothing wrong with the way your running it. some run no tweak screws with the springs, some no springs with tweak screws, you can also do both at the same time.

#3 forward movement it's stiffer than a 75 t-bar, on the side to side slightly softer. i have run a graphite t-bar on a track that was dead on flat with zero bumps, ripples, or raised tape joints. the track also had a black groove in it. i didn't have any traction rolling problems that others had. when they changed the layout i had to go back to FG t-bars. once they put new carpet over the old carpet, but not glued down, i never ran it again.

fast-ho-cars, I wish I would have read that post when I was running 12th I could have fixed that bump steer. I liked the angled better but the weight loss of flat and low c/g is the way to go. And it gives you the option of putting the servo to the front which I never tried. You may have broke down 12th scale in one post. :cool:

What side do you consider the trailing edge? When looking at the brush hoods from the top. Would it be the left side of the brush?

Yup!

Yellow is different than a white. I have both white 2 stage tires and yellow 2 stage tires here. Yellow is in between a white and gray. I guess they could have called it a double white :lol:

EA

OD,
Sent you an email......thanks.

Ronnie

Billy Sydor at FastLane track maybe would've been able to help you in this area.

besides angled or flat servo, also buried in this thread is talk of where the servo is mounted and the affects of the steering linkage (viewed from the top) being angled forward, angled back, or near straight.

i try to run them near straight, even with that in mind you can mount a servo forward so the links are mounted behind the servo saver or with the servo back so the links are mounted in front. each way has a affect on steering and handling due to the weight shift.

i am currently running a new CEFX C-12, i mounted the servo angled but in the position where should be mounted flat. the servo is farther forward compared to a 12L4 or CRC T-fource. the links are straight and mounted behind the servo saver. it has been working great. the frontend feels planted and steering feels crisper and precise compared to my previous set-up.

If I remember correctly, when looking at the hood from the top, with the brushes going out to your left and the right, the trailing edges would be the top of the brush on the left and the bottom of the brush on the right. Correct EA?

The motor spins counter clockwise, the trailing edge is the left side of the brush, same on both sides. Sorry for the crappy pic :)

Do you guys run any drag brake on your stock motors? I run a Quantum 2. What profiles do you guys use? I have
punch 4
inital brake 2
drag 2
I don't use any bake at all right now.

i run the gtx, and i run the stock profile, i think the drag brake is 15%. dont quote me, but... i try not to completely let off the throttle in 12th stk. i just roll off the throttle to shift weight and turn into the corner. stock motors have quite a cogging effect so very little drag brake is needed.

-Zac