Advices needed on BX world

[fifi]

I have trouble with my set up on the BX world.
I am new yokomo user. Use to drive X5 and XX4.

with standard kit setup.

The back of the car slide when I accelerate after a turn.
The car goes 180°. I run losi stud all around.
Slipper is loose and diff also.
I thaught I had too much traction in front but I don t
have enough steering.so I put used tires in front and it the same.

Thanks,

[Adi]

hy

do you run a one-way in the front? or diff? a loosen diff?

[DaveG28]

Also, how have you set the centre one way? What electrics/cells are you using?

[fifi]

I run the center one way. A diff in front.
The front diff a little more tigthen than the rear.
I tryed tigther or looser front or rear nothing change.

I run lipo but I put a lead weigth to have same as nimh.
I run GM 95 with a 5.5 geared 17/87
The speedo is program soft.

I wan t to try some spacer in front shock. Maybe the front
is lifting to much and I don t have the front traction to pull
the car. It look like if I had 2WD. What do you think?

Today I tryed .5, 1 degree hub nothing
longer camber on the hub in the back nothing
the 3° in the back upside down nothing changed.

[DaveG28]

Sounds very similar to how I found the Bmax at first. I've currently got round it by running the rear softer on springs and oil, you could try tfat, maybe Yok green rear springs?

Is it a very low traction track by the way?

[Adi]

shocks? oil and springs?

and what for a surface?

[fifi]

hard pack dirt
black spring all around.
35 black piston front
30 white piston rear

I tried with green in back not any better.

[Bike Racer]

Originally Posted by fifi

hard pack dirt
black spring all around.
35 black piston front
30 white piston rear

I tried with green in back not any better.

Sounds pretty stiff to me. I run a non worlds BX, so I'm not sure how my setup would work, but one of the guys at my track runs a worlds car and this is his setup.

Front:
Shocks inside tower-middle arm
Black Yokomo springs
#1 AE pistons
35 wt AE oil
0 limiting
Camber link outside/top - standard ballstud on carrier 0 washers
3 .030 washers under the camber link mount
Carriers up (pin in bottom hole on carrier)
Carriers shimmed forward
0° toe
-1.5° camber
Diff set pretty loose
Ride height arms level

Rear:
Shocks second hole from outside on tower - outside/bottom arm
Blue Yokomo springs
#1 AE pistons
30wt AE oil
.030 limiting
Standard shock tower
Camber link outer hole on camber plate - inner hole on hub 0 washers
1 .030 washers under the camber link mount
.5° hubs
Hubs forward
Arms forward
0° anti-squat shims
3° rear pivot pointing up
-1.5° camber
Rear diff fairly loose
Ride height bones slightly above level


Also, you say hard packed dirt, is that dry, or is there moisture in the dirt? Is it clay, or topsoil? You might try to dial in with tires first.

[fifi]

I will try it.

For tyres
I tried
X2000,
X3000,
losi stud,
proline holeshot
ifmar pin
losi BKbar

I will say topsoil dry
Before it was really dusty then rain and dry
and now no grip.
Before with my XX4 it was OK now same setting
I have the same probleme I have with the yok.
Not enough steering and the back suddenly no grip and 180°
Someone looking at my car say it was 2WD but it works 4WD.

I will try the given settings and softer the suspension.
Any idea on hole on AE #1 pistons? 2 holes what diameter?

[turtlebmx]

still sounds like a tight diff. a tight diff in rear would cause no slip and a front end push. mine used to do that till i figured out the slipper and diff settings.

[fifi]

I want to run my diff as loose as possible but when to I know if
they are not to loose and will melt?

Screw it to maximum then back off X amount of turn?

Is there a tool to be able to mesure? where to get it?