Power System - Traxxas Rally 7407 Owner's Manual

The following Traxxas High
Current Connector packages
are available from your
hobby dealer. When using
adapters, be careful not to
exceed the current rating of
the Molex connector.
Part #3060 Part #3080
Single Male/Female 2-Pack Female
Part #3061 Part #3070
Male Charge Adapter
2-Pack Male
Part #3062
Female Charge Adapter
Battery Compartment Specs:
• 166mm (6.54") long
x 49.5mm (1.95") wide
• Height with stock strap:
23mm (.91") or 25mm (.94")
• Height with Part #7426X
options battery standoffs:
Up to 44mm (1.73")
Note: There is some flex with
the battery strap. It is possible
to fit slightly taller batteries in
the compartment.
4
12 • TRAXXAS RALLY
TRAXXAS TQ RADIO & VELINEON POWER SYSTEM
i
INSTALLING THE BATTERY PACK
Install the battery pack with the battery wires facing the rear of the
model. Insert the tabs of the battery hold-down into the slots in the
rear hold-down retainer (A). Swing the battery hold down towards
the chassis and snap (lock) the end into the front hold-down
retainer (B).
Using Different Battery Configuration
The battery hold-down is capable of accommodating either side-by-
side racing style packs, or the more common stick packs. The battery
compartment is configured for stick packs from the factory. The
number on each side of the hold down indicates the battery height
in millimeters that hold-down can accommodate. Note that one
side is labeled "25" and other side is labeled "23". The 25mm side
is for use with typical stick type battery packs. If you are using side-
by-side racing packs, simply flip the hold-down over to the 23mm side
and use it on the opposite side of the chassis. Note: For taller batteries,
an extended battery hold down, part #7426X, is available (sold
separately). For shorter batteries (6-cell), use the included foam block
in the front of the battery compartment. For thinner or LiPo batteries,
attach the included foam strip to the side of the battery compartment.
25mm side: Standard NiMH
stick pack setup
23mm side: Side-by-side NiMH pack setup
The Traxxas High Current Connector
Your model is equipped with the patented
Traxxas High-Current Connector. Standard
connectors restrict current flow and are not
capable of delivering the power needed to
maximize the output of the Velineon Brushless

Power system.

The Traxxas connector's gold-plated terminals with a large contact
surfaces ensure positive current flow with the least amount of
resistance. Secure, long-lasting, and easy to grip, the Traxxas connector
is engineered to extract all the power your battery has to give.
Using Other Batteries
Your model is equipped with a state of the art, high-performance
power system. It is designed to be able to flow large amounts
power with the least amount of restriction. The benefits are
drastically increased speed and acceleration. However, this
places extra demands on the battery and electrical system
connections. For best performance, your model requires the use
of NiMH battery packs that have cells rated for high discharge
and use high-quality, low-resistance assembly techniques, such
as the included Traxxas Power Cell Battery Pack. Cheaply made
battery packs do not retain their performance characteristics
after repeated uses in high-powered electric applications. They
will lose their punch and run time and may require frequent
replacement. In addition, poor-quality, high-resistance cell
connectors could fail, requiring disassembly and repair. The
main goal is to reduce all sources of high resistance in the pack.
This includes the connector, the wire, and the
bars attaching the cells together. High
pack resistance will create additional
heat and rob you of the full power the
cells are capable of producing. We
recommend using Traxxas Power Cell
batteries for best performance.
2950 Battery, Series 4 Power Cell, 4200mAh (NiMH, 7-C flat, 8.4V)
2952 Battery, Series 4 Power Cell, 4200mAh (NiMH, 6-C flat, 7.2V)
2940 Battery, Series 3 Power Cell, 3300mAh (NiMH, 7-C flat, 8.4V)
2942 Battery, Series 3 Power Cell, 3300mAh (NiMH, 6-C flat, 7.2V)
2923 Battery, Power Cell, 3000mAh (NiMH, 7-C flat, 8.4V)
2922 Battery, Power Cell, 3000mAh (NiMH, 6-C flat, 7.2V)