Losi LOSB0290 - Manual (Page 18)


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Battery Position: This is a critical adjustment that is often
overlooked but can be very useful. Start by running the battery
spaced in the back (standard setup with 6-cell battery pack).
Having the battery in the back can improve rear traction on
slippery surfaces and steering response. Having the battery
back too far can cause the rear end to swing through turns
on some tracks and “dump” the rear end causing instability
issues. This is a result of having the weight too far back. The
1/10 Slider comes equipped with one foam battery spacer to
accommodate different size battery packs.
Camber Rise Relationship: The 1/10 Slider setup out of the
box comes with less front camber gain than the rear camber
gain. The reason for this is that less front camber lets the front
end drive flatter and makes the 1/10 Slider more stable. By
having more camber gain in the rear, the 1/10 Slider has more
rear traction, this helps the rear tires accelerate through the
bumps and ruts.
Wheels and Tires
The tires come pre-mounted with the vehicle and should be
checked to make certain they stay glued to the wheels. The
wheel spinning speeds can pull the rubber tire away from the
rim. When a tire or tires come loose from the rim, you will notice
the vehicle is hard to control.
Losi offers aftermarket hard compound tires for your 1/10
Slider. For the front a hard compound premounted tire is
available to smooth out the steering on high-bite tracks such
as carpet (LOSB7432). A hard compound rear premounted tire
(LOSB7462) can be used to decrease rear grip.
Tip the vehicle on its side and using both hands to hold one
wheel at a time, use your thumb to press the tire away from
the rim. If you see a tire pull away for the rim use Losi Tire Glue
(LOSA7880 thick or LOSA7881 thin) to re-glue. It only takes a
small drop of glue generally. Be careful; this is CA-type glue and
you do not want to glue your fingers to the wheel and tire.
Use safety goggles when gluing tires.
Check the mounting of the tire periodically to ensure proper
performance and handling.
Steering Assembly: Occasionally, check the steering assembly
and you may notice increased looseness. There are several
components which will wear out from use: tie rod ends (part
LOSB2015), the servo saver (part LOSB2356). You can easily
replace these components to restore factory specifications.
Adjusting Gear Mesh
Incorrect gear mesh is the most common cause of stripped spur
gears. To set the gear mesh, one method is to cut a narrow strip
of notebook paper and thread it in between the gears. Loosen
the motor screws and slide the motor and pinion gear into the
spur gear. Retighten the motor screws and then remove the
strip of paper. Or you can loosen the motor and carefully slide
the motor leaving a small amount of backlash (play) between
the spur and pinion gears. It should not be tight and if you look
up-close there should be slight movement of the spur before
contacting the teeth on the pinion gear.
Gear Ratio
Changing the gearing provides you a quick and easy way
to tune the 1/10 Slider. Use the temperatures of both the
motor and your battery pack as a guide to gearing to your
environment. When the Motor is above 160-170 degrees
Fahrenheit or the batteries are above 125-135 degrees
Fahrenheit, these are both strong indications that you should
drop the pinion size smaller. This would be a lower gear ratio
or larger number, for example from 11.25 to 12.40. Going up
a pinion size is called gearing higher or a small number, for
example 11.25 to 10.6, and will increase power consumption
and allow more speed.
Use the following formula to calculate the overall ratio for
combinations not listed on the gear chart:
Spur Gear Size
Pinion Gear Size
X 2.43 = Final Drive Ratio
When using higher gear ratios, it is extremely important to
monitor the temperatures of the battery and motor. If the
battery is extremely hot, and/or the motor is so hot that you
cannot touch it, most likely you are overgeared and drawing a
lot of current.
The gear combination that comes on the 1/10 Slider (23-tooth
pinion / 90-tooth Spur) provides high-speed running intended
for asphalt and off-road dirt surfaces. This gearing is not
recommended for running in grass or constant starting and
stopping. Included with your 1/10 Slider is an additional 86 and
88 tooth spur gear for larger oval tracks where more top speed
may be needed. The optional LOSB2235 Lightened aluminum
motor mount can be used for a broader range of gearing.
Storage
When you are through running the model for the day
• Blow it off with compressed air or use a soft bristled paint
brush to dust off the vehicle.
• Always disconnect and remove the battery from the
model whenever the model is stored. If the model will
be stored for a long time, then also remove the batteries
from the transmitter.
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