Page 18
ChASSIS TUNING GUIDE
The X-Terminator 2e features front, centre and rear bevel gear differentials that feature O-Ring seals and cup-style housings. All three
differentials are packed with differential grease that works well for most driving conditions. You can make ne-tuned adjustments to
each differential by removing them from the chassis, opening them up and replacing the grease with different weights of silicone oil.
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Front and Rear Differentials: Adding heavier silicone oil will tighten the differentials and adding lighter silicone oil will loosen the
differentials. If your X-Terminator 2e feels loose (uncontrollable) during turns, you can tighten the front differential or loosen the rear
differential. If your X-Terminator 2e is pushing (understeer) during turns, you can loosen the front differential or tighten the rear differential.
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Centre Differential: Using a lighter weight oil will cause the differential to unload easier. Generally, this is good for loose tracks with
little traction. Using a heavier weight oil will provide a more even amount of power to the front and rear. On loose tracks, this can
cause the X-Terminator 2e to be too 'squirrely' (uncontrollable) or cause the rear end to slide out. For this reason, we only suggest
using heavier oil if you're driving on a high-traction surface.
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Adjusting the Differentials - Front, Centre, and Rear
q Remove the upper hinge pins, then remove the screws that hold the upper suspension
plate in place.
q Remove the upper and lower suspension plates, then rmly pull the front half of the
differential case straight out.
q Remove the four 4 x 15mm Flat Head screws from the bottom of the chassis that
hold the front bumper and front half of the gearbox in place.
q Use a small at blade screwdriver to pry the screw cover off the front of the bumper,
then remove the two 4 x 12mm Button Head screws from inside the bumper and
remove the bumper.
We detail below the removal of the front differential. Removing the centre and rear differentials is similar. If necessary, refer to the
Exploded View Assembly Drawings beginning on page 21 for more detailed information.
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Unless you're racing, we recommend initially using the grease that already lls each differential. If you're racing on a loose track, you
might start by using 3K in the front, 5K in the centre, and 1K in the rear. If the traction is really good, you might try using 7K in the
front, 10K in the centre, and 3K in the rear.
q Remove the hinge pins, drop the lower suspension arms, then firmly pull the
differential assembly straight out.
q Remove the four 2 x 10mm Tapping screws that hold the differential housing together.
Pull the differential housing apart, then pull the differential assembly out of the
differential housing.
q You can now disassemble the differential, remove the grease, then reassemble and
rell the differential with the silicone oil of your choice.
For detailed information about disassembling, then re-assembling the differentials, see
the 'STEP 1: FRONT, REAR, AND CENTRE DIFFERENTIALS' section on page 21.
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