Xray RX8 Instruction Manual - page 29
29
Flywheel
CUT
Clutch weights are machined as 1 piece, with thin
film connecting the pieces together. You need to cut
the connecting film to separate the 3 shoes.
10~11mm
DETAIL
9.2 +0.1mm
Adjust with spring
preload collar
Adjust with shims
behind flywheel
8. ENGINE & CLUTCH
NOTE
ORIENTATION
Tighten the clutch nut using
HUDY tool #107581
Use the flywheel collar that comes with your engine, or
use optional XRAY collars:
#338540 – XRAY flywheel collar for Ø6mm crankshafts
#338541 – XRAY flywheel collar for Ø7mm crankshafts
The flywheel collar must stay
inside the flywheel.
If the flywheel collar is too long
– if it is flush with the flywheel
or protrudes slightly – remove a
small amount of material from
the end, or use an XRAY collar.
Hold the flywheel using HUDY
Flywheel Tool #182010
Shim (for adjusting flywheel distance)
964073
S 7x10x0.2
964074
S 7x10x0.3
964075
S 7x10x0.5
CORRECT
INCORRECT
INITIAL POSITION FOR FLYWHEEL PINS
TECH TIP FOR EXTRA BOTTOM-END POWER
For extra bottom-end power, thread a M3x4 setscrew (#901304) into each clutch flyweight
as shown. The setscrew will add more weight to the end of the flyweight which will cause the
flyweight to open harder, giving more bottom-end power. This is recommended for high-traction
tracks where bottom-end power is required.
After inserting the setscrew,
some excess material may
come out of the hole.
REMOVE this excess material
with a knife.
CUTAWAY VIEW
IMPORTANT!
Install setscrew into free (non-pivot)
end of flyweight.
M3x4
(#901304 not included)
3x
➊
➋
➌
➍
➎
➏
TECH TIP FOR RX8 CLUTCH SHOE
To ensure that the RX8 clutch shoe works properly and for a long
time, it is very important to run in the clutch shoe.
Please follow these run-in steps to help ensure proper clutch
operation:
Install clutch according to manual.
Check that the spring preload is not too much; for run-in process use less preload.
When you start the engine, the clutch should start engage under low RPM.
If the clutch engages only under high RPM, stop the engine and loosen the spring preload
collar. Repeat until the clutch engages under low RPM.
Run in the clutch shoe on the track, or on the starter box if you have only limited time.
(We recommend running it in on the track.)
Run in the clutch shoe for 1 tank of fuel using a soft preload setting, and then after that
slightly tighten the spring preload. DO NOT run in the clutch shoe under high RPM.
Continue this process until the clutch shoe is properly run in; this will be indicated by a dark
and glossy surface colour on the top of the clutch shoe.
DETAIL