Calandra Racing Concepts MetriCKs Assembly Manual page 4

Ultra-tune Front End
Welcome to the best front end in 1/12th scale racing; The CRC Ultra-tune Front End.
1.
Use two M3 x 5mm button heads to mount the 4/-1 CC plate to the upper deck.
2
. Push a small body clip through the vent hole in the king pin. This is a safe way to hold the king pin while securing it to
the C/C plate (caster/camber plate). Tighten the king pin to the C/C plate with the M3 x 8 BH (1490) while holding the
body clip.
3.
Populate the steering block with the 3021 bushing and the 3022 collars, both top and bottom. Be sure the collars are
snug, not super tight, just snug. The bushing and the collar should be square and straight in the steering block.
Add a drop of thread locker to the front axle (3020) and tighten FIRMLY into the 3019 steering block. Drop the steering
block over the kingpin to help hold the steering block while tightening. Use a deep 5.5mm nut driver to tighten the axle.
The CRC team uses grease (not silicone fluid) to damp and smooth the front suspension. Place ONLY the lower
bushing/steering block over the kingpin and add Kyosho 15k Diff grease to the gap between the bushings. Put a good
amount in the gap between bushings. Before installing the top of the steering block fully over kingpin, place your finger
over the bushing hole to keep the grease trapped in the block. Work the block up and down, working the grease around.
4.
Put the front spring over the kingpin and top off with the washer and M3 x 6 button head.
3022 Steering block collar
3021 Steering block bushing
3020 1/8th
3019 Steering block
axle
3021 Steering block bushing
3022 Steering block collar
Servo Plate
Bag 4
Tweak Spring
3078
assembly
Thread the set screw
in until flush with the
bottom of the holder.
1
Make sure spring coil
is seated into groove
on spring holder.
2
3012
3
** Pro TIP **
The CRC kingpin and bushing fit is
very good in stock form. For an even
smoother, more plush front
suspension, use Mothers Aluminum
polish on the kingpins to make them
super smooth.
1.
Thread a M3 x 12 set screw into a plastic spring holder. Turn the set screw until the base of the screw is FLUSH with the
bottom of the spring holder. Snap the tapered side roll spring onto the plastic spring holder.
2.
Put a 1.5mm hex driver through the tweak hole in the 3012 carbon servo plate from the top. Apply some pressure from
below while turning counter-clockwise drawing the tweak spring assembly up into the carbon. Keep it perpendicular and
square. Continue until there is 12mm from the bottom of the spring to the underside of the servo plate. This is a good start
before tweaking the car after fully assembled. Again, when self-threading into carbon, a little grease or oil on the screw is
beneficial.
3.
The car accepts Sanwa (SXR) mini servos and similar clones (Exalt HB112, MKS HV50). Don't break off any servo ears!
We use both the upper and lower ears for added strength. The M3 x 14 self-threads into both ears. These Sanwa style
servos are sized correctly to fit the car The Sanwa is available at CRC. We recommend the Tamiya TAM54799 servo saver.
4.
Pop the tie rods and ballcups on the ballstuds
1493
3082
1489
3012
3066
1490
3040/41 C/C plate (4/-1)
.
3
3082
1489 M3 x 6 Button head
4
1208 washer
3028-33
3022 collar
3021 bushing
3
1529
ride height
washer .75mm
3023 Vented Kingpin
2
1490 M3 x 8 Button head
Less ackerman,
tires more parallel
better for sharper,
aggressive tracks
More ackerman, inside
tire angled more than outside
Suited for more flowing track.
Bag 3
Front spring
M3 x 5
1481
Button
head
1
4