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SOLID FRONT AXLE
A solid front axle ties both left and right front wheels together so they
rotate at the same speed at all times. The car achieves maximum 4WD
braking, while being very stable and easy to drive.
FRONT & REAR AXLES
Off-power:
Decreased off-power steering
On-power:
Increased on-power steering
Best combined with:
Rear differential
Typically used on:
Large open outdoor tracks, tracks with braking areas, or slippery (low-traction) conditions
Advantage:
4-wheel braking allows for later braking
Considerations:
• With less off-power steering, the car becomes more sensitive to tire diameter differences. To compensate
for these effects, changes can be made to the suspension (for example, roll center, front spring rate and/or
damping, shock position, or caster).
• Decreased drivetrain effi ciency (less runtime). Best suited to an aggressive driving style.
The front gear differential may be quickly and easily converted into a solid front axle by using the Solid Locking Adapter (#335040) included in the
NT1 kit. The adapter replaces internal gears and locks the two outdrives together.
XRAY MULTI-DIFF™
XRAY MULTI-DIFF™ — FRONT SOLID AXLE
With the optional XRAY Multi-Diff™ set to “front solid one-way” mode,
both outdrives (left and right) are connected together by internal
locking axle, but are not connected to front main axle.
XRAY MULTI-DIFF™ — FRONT SOLID ONE-WAY AXLE
With the optional XRAY Multi-Diff™ set to “full-time solid axle”
mode, both outdrive shafts (left and right) are connected to front
main axle by the internal locking axle and locking pin.
The characteristics using the Multi-Diff™ in “full-time solid axle”
mode are exactly the same as locking the front gear differential.
Off-power:
Both front wheels rotate forward together (but independently of the front main axle).
On-power:
Both front wheels rotate forward together (locked in one-way bearings), at same speed as front main axle.
Best combined with:
Rear differential.
Typically used on:
Medium-to-high traction tracks where braking for corners is not required.
Advantage:
Good off-power steering and effi ciency.
O-ring
Outdrive shaft (Left)
Outdrive shaft (Right)
Locking axle
Locking pin
Front main axle
Cutaway view
O-ring
Outdrive shaft (Left)
Outdrive shaft (Right)
Locking axle
Front main axle
Cutaway view
For more details see “Solid Front Axle” table.
The optional XRAY Multi-Diff™ may be used in the NT1, and be quickly and easily confi gured to be one of
three different types of front axle: front solid axle, front solid one-way, and also a front one-way.