Hudy Quick-Tweak Station User manual

23
FEATURES
• Center axle is specially ground to be perfectly straight & level with
ends additionally hand ground for precision fitment into bearings
• Manually-selected ball-bearings are precisely pressed into the base
plates to ensure free rotation and bind-free movement, allowing easy
deflection from even small amounts of tweak
• Ball-bearings are degreased and lightly oiled with AeroShell 12™
fluid for ultra-free and smooth operation
• Base plates are CNC machined from strong, lightweight aluminum;
specially milled-out cavities in the bottom of each base plate give
ultra lightness; both left and right sides are identically weighted for
perfect balance
• Precision spirit level in pivoting base plate; base plate material is
milled out from around spirit level for easy viewing in any position
• Base plates are black coated for protection and stylish look, precision
laser-engraved track-width scale of 160–220mm
• Three adjustable threaded feet allow easy level adjustment
• Universal station fits all 1/10 on-road cars; the fixed base plate can
be moved along the center axle to shorten the Quick-Tweak Station
for measuring 1/12 cars as well
Correct tweak is one of the most important concerns that influences
the overall performance of the car; a badly-tweaked car has a very
negative impart on a car’s handling. As such, it is very important
to check and correct tweak regularly; pro racers check tweak
a number of times after each run.
The new HUDY Quick-Tweak Station allows you to quickly and easily
check and correct tweak on your race car to help ensure proper,
consistent handling.

45
ASSEMBLY & ADJUSTMENT
➊Before you check & correct the tweak of the car, make sure that
you are working on perfectly flat surface. For best results use the
ultra-flat HUDY Set-up Board (#108201) and HUDY Set-Up board
decal (#108211).
➌Install a threaded foot into the bottom of the center axle, near the
end for the pivoting base plate.
➍Slide the other end of the center axle through the holes in the fixed
base plate.
➎Adjust the length of the tweak station to correspond to the car you
are measuring; the length of the car varies between categories.
Fixed Base Plate: Lay the pivoting base plate along the top of the fixed
base plate so you can observe the spirit level. Adjust one or both threaded
Center Axle: Lay the pivoting base plate along the top of the center axle
so you can observe the spirit level. Adjust the threaded foot in the center
axle until the bubble in the spirit level is between the middle lines.
➏Adjust the tweak station so it is level. ➐Reattach the pivoting base plate to the end of the center axle; slide
the stepped end of the center axle through the bearings of the
pivoting base plate.
1/12 cars approximately 200mm
1/10 cars approximately 260mm
DETAIL
DETAIL
➋Install two threaded feet into the bottom of the fixed base plate.
feet until the bubble in the spirit level is between the middle lines.

If the FRONT RIGHT
wheel pushes down on
the pivoting base plate,
the REAR LEFT wheel
has too much tension
67
PREPARING TO MEASURE TWEAK MEASURING TWEAK CORRECTING TWEAK
The weight of rubber tires varies due to the different weights of inserts
and tires. For electric rubber-tired cars we recommend using the
#109370 HUDY alu set-up wheels for rubber tires for better checking
of tweak. For 1/10 electric foam-tired touring cars and pan cars, we
recommend using foam tires.
Adjust the position of the car
to ensure each end of the car is
centered on its base plate. The
outer edge of each wheel (at one
end of the car) should be beside
equivalent marks on each side of
the base plate.
Determine which end of the car you want to check for tweak, and then place
that end of the car (front or rear) on the FIXED base plate. The other end of the
car should be placed on the PIVOTING base plate.
Each type of car platform uses different methods for correcting tweak:
• For touring cars (or other cars with fully-independent suspension), tweak
adjustments are typically made using shock spring preload.
• For pancars (such as 1/12 pancars like the XRAY XII), tweak adjustments
are typically made using tweak screws in the center T-bar.
Refer to your car’s set-up guide for explicit instructions on correcting tweak.
Each time you make an adjustment, re-check the alignment. You shouldn‘t
have to make large adjustments to get things in balance; if you have to
keep making turns and the car does not seem to balance, there is probably
something else that needs attention.
To correct tweak on a touring car with fully-independent suspension:
• If a particular wheel pushes down on the pivoting base plate (causing it to
tilt down), the DIAGONALLY OPPOSITE wheel (on the fixed base plate) has
too much tension on it.
• When you determine the wheel (on the fixed base plate) that has too much
tension on it, reduce spring preload on that wheel, and increase spring
preload by an equal amount on the other wheel on the fixed base plate.
The examples on the right show how to adjust tweak in the REAR suspension -
REAR wheels on FIXED base plate & FRONT wheels on PIVOTING base plate.
To adjust tweak in the FRONT suspension, turn the car around so the FRONT
wheels are on the FIXED base plate and the REAR wheels are on the PIVOTING
base plate.
Example for checking front tweak:
Following the example above, check for rear tweak by placing the rear
wheels on the fixed base plate, and place the front wheels on the pivoting
base plate. Looking at the front of the car (on the pivoting base plate), if the
base plate is tilted down to the right (under the FRONT RIGHT wheel), that
means there is excess tension on the REAR LEFT wheel (the diagonally-
opposed wheel).
The pivoting base plate will indicate if there is tweak at the OTHER end
of the car.
• If the bubble in the spirit level is
centered, there is no tweak at the
other end of the car.
• If the bubble in the spirit level is
offset to one side, the other end of
the car is tweaked.
For example, if you are measuring
a car with a 190mm track-width, the
outer edge of each wheel should be
beside the engraved number “190”
on each side of the base plate.
For example, to check REAR tweak, place the REAR wheels on the FIXED
base plate, and place the FRONT wheels on the PIVOTING base plate.
Tighten this
spring collar
Tighten this
spring collar
If the FRONT LEFT wheel pushes down
on the pivoting base plate, the REAR
RIGHT wheel has too much tension.
Loosen this
spring collar
Loosen this
spring collar
CENTERED
CENTERED

89
• If a particular rear wheel pushes down on the pivoting base plate (causing
it to tilt down), the tweak screw on the OPPOSITE side of the T-bar has too
much tension on it.
• When you determine the tweak screw (in the T-bar) that has too much
tension on it, loosen that tweak screw, and tighten the other tweak screw by
an equal amount.
The HUDY Quick-Tweak Station is perfect for quickly checking for tweak of
your car. For complete geometry adjustment, HUDY also offers the All-In-One
Set-up Solution which gives you all the tools necessary to completely set
up the car geometry as well as setting tweak with the HUDY Ultimate Tweak
Station. The HUDY Ultimate Tweak Station integrates with the rest of the set-
up components for a highly-precise and accurate tweak adjustment, allowing
you to perform all set-up adjustments in one session
#109305
Universal Set-up System all 1/10 nitro & electric touring cars
#109405
Universal Set-up System for 1/12 & 1/10 Pan Cars
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• 1/10 Nitro Touring Cars
• 1/10 Electric Touring Cars
• 1/10 Pan Cars
Setting up an RC racecar is necessary to make the car perform well.
Aside from tweak there are numerous other set-up adjustments that can
be made (depending on the type of car) such as camber, caster, toe, ride
height, downstops, and many others. Car setup is a complex matter, as all
adjustments interact. Fine-tuning the set-up will make your car faster and
often easier to drive near its performance limit. This means that all the effor t
you put into your car in preparing it and optimizing the setup will pay off in
better results and more satisfaction.
HUDY offers a complete product line of professional set-up equipment for
complete car set-up and adjustment. HUDY is fully dedicated to designing,
developing, and producing the world’s best, smartest, and most professional
set-up equipment and tools. With their long and distinguished history for
coming up with unique ideas and innovations, HUDY is the leader in the RC
tool and set-up industry… there simply is no better.
HUDY SET-UP ACCESSORIES
To correct tweak on a pancar with T-bar rear suspension:
Tweak on a 1/10 and 1/12 pan car with T-bar suspension can ONLY be
adjusted via setscrews on the T-bar.
• The FRONT tires must be placed on the FIXED base plate, and the REAR
tires must be placed on the PIVOTING base plate; tweak cannot be adjusted
if the car is turned opposite to this.
In the RIGHT example below, the REAR RIGHT wheel is pushing down on
the pivoting base plate too much. This means the LEFT tweak screw has too
much tension. LOOSEN the LEFT tweak screw, and TIGHTEN the RIGHT tweak
screw by an equal amount.
Tighten TightenLoosen Loosen
• 1/12 Electric Touring Cars
• 1/12 Pan Cars
T-BAR T-BAR

10 11
#109370
HUDY Set-up Wheels for 1/10 Rubber tires
#107750
HUDY Quick Camber Gauge for 1/10 Touring Cars 1.5°, 2°, 2.5°
#107702
Droop Gauge Support Blocks
#107712
Droop Gauge -3mm~10mm
#107719
HUDY Quick Downstop Gauge Tool 1.0 ~ 6.5mm
#107714
Ultra-fine Droop Gauge Step increment: 0.2mm
#107718
Ride Height Gauge Stepped for 1/10 & 1/12 Pan Cars
#107713
Ride Height Gauge Stepped 2mm~15mm
#107716
Ultra-fine Ride Height Gauge Step increment: 0.2mm
#107715
Ride Height Gauge Flat 1mm~15mm
#108205
HUDY Set-up Board
DARK GREY
#108203
HUDY Set-up Board
SILVER
#108204
HUDY Set-up Board
TITANIUM
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HUDY Ultimate Tweak Station
(included only in All-In-One Set-up Solution #108255)
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