Standard Bearer Machines RUNGU Electric Juggernaut Mid-Drive User manual

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 1
rungu®electric juggernaut
mid-drive version owners
manual
Congratulations on purchasing a Rungu Electric Juggernaut Mid-Drive Version
1
! You own the latest
generation of Rungu True e-ATVs for on-road and off-road access for adventure and fun. Before you ride
and make new tracks, please read the following instructions carefully.
Standard Bearer Machines, LLC (Standard Bearer Machines) thanks you for your purchase!
The Electric Juggernaut Mid-Drive Version (MDV) uses the Bafang BBSHD mid-drive motor with a custom
Rungu 52V (nominal voltage) supply to provide more than 1.5kW of power. You access the power by
pedaling (“Pedelec”) or pressing the thumb throttle. As a “Pedelec,” the MDV senses when you start to
pedal and engages the motor to assist your pedaling - you don’t have to use the throttle if you don’t
want to. The amount of power assist varies based on the power level you select as you ride. The MDV
has five power levels starting with barely any assist to full power - intended for use off-road only. The
power settings are discussed in the power settings section below.
Note: US Federal Law mandates a 750W/20 MPH limit for riding an e-bike on public roads without a
license. Please check with your local government to ensure you follow all local laws and ordinances.
Standard Bearer Machines are not liable for those who choose not to follow their local laws.
CAUTION: Standard Bearer Machines will not be held responsible for people who choose to disregard
the law!
Warning: IMPORTANT- Standard Bearer Machines will not be liable for any damage or injury that may
occur due to operation of our kits or bicycles. By using the Electric Juggernaut, you are agreeing to
Standard Bearer Machines Terms and Conditions and the warnings and conditions of the Generic Bike
Manual which are included with other files in the USB key accompanying the Electric Juggernaut.
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As the owner, you agree and are bound by all sales and transfer conditions as defined in “SBM Rungu Sales Terms
and Conditions US 2017a” or “SBM Rungu Sales Terms and Conditions US 2017 –Demo Model.” Copies of these
documents are available on the USB document drive that ships with the product or upon request by e-mailing
[email protected].

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 2
Contents
Parts identification........................................................................................................................................ 4
Unpacking and Assembly Instructions.......................................................................................................... 6
Tools required........................................................................................................................................... 6
Unpacking and Assembly Instructions......................................................................................................7
Cautions and Safety .................................................................................................................................... 19
General Cautions and Warnings .............................................................................................................19
Battery Safety..........................................................................................................................................20
Battery Safety Precautions..................................................................................................................21
Catastrophic Battery Failure ...............................................................................................................21
Battery Safety (In Depth) ....................................................................................................................22
Battery Failure Response Procedure ..................................................................................................23
Operating a New MDV................................................................................................................................24
Charging Your Main Battery....................................................................................................................24
Charging the Battery in your (Optional) Range Doubler.........................................................................28
Before your first ride –Safety Check ......................................................................................................32
Using the Motor and Light Control keypad and Understanding the Display..........................................34
Turning on the MDV............................................................................................................................34
Reading the MDV Display.................................................................................................................... 34
Riding the MDV.......................................................................................................................................37
MDV Operation Cautions....................................................................................................................37
Using the Front Suspension ................................................................................................................38
Using the parking brake switch...........................................................................................................38
Using Gear Shifters..............................................................................................................................38
Riding Safety ...........................................................................................................................................39
Rungu MDV Maintenance and Care ...........................................................................................................40
Battery Care ............................................................................................................................................40
Storage When Not Using MDV for Periods of Two Weeks or Longer..................................................... 40
Prolonging the Life of your Battery –Best Practices ..............................................................................40
Before Each Ride.....................................................................................................................................41
After Each Ride........................................................................................................................................43
Maintenance –every 500 miles or six months .......................................................................................43

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 3
Getting the Stated Range out of Your System ........................................................................................44
Default Display Settings ..........................................................................................................................44
Securing your MDV .................................................................................................................................44
Troubleshooting.......................................................................................................................................... 45
Getting more information...........................................................................................................................47

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 4
Parts identification
The following images show the names of various components on the MDV
Figure 1 Left Side View
Figure 2 Right Side View

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 5
Figure 3 Steering assembly view
Figure 4 Parking Brake View

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 6
Unpacking and Assembly Instructions
Warning: Failure to follow instructions may lead to incomplete or faulty assembly that can result in
accidental rider injury or death.
Before you ride and make new tracks, please follow the assembly instructions carefully. The team at
Standard Bearer Machines recommends that you have the assembly performed by a qualified bike
mechanic.
Tools required
•5mm Hex wrench
•6mm Hex wrench
•Tire inflation pump (presta valve)
•Wire cutters or scissors to remove packing material

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 7
Unpacking and Assembly Instructions
Warning: Failure to follow these instructions may lead to incomplete or faulty assembly that can
result in accidental rider injury or death.
1. The MDV comes in a cardboard carton. After you have removed the binding straps, remove the
top cover on the front of the MDV. If you intend to ship or return the MDV, please keep all
packing materials.
2. If you have purchased a Rear Rack or Range Doubler, remove the rack and place it to one side.
3. Remove the accessory box containing Quick Release Skewers, AC battery charger, tools, USB
document drive, keys and pedals.
4. Remove the two wheels from the carton and place them aside carefully to avoid damaging the
disc brake rotors.
5. Lift the frame and rear wheel from the carton and place the assembly on the floor gently so that
it stands upright as it was in the carton.
CAUTION: THE MDV FRAME AND REAR WHEEL WEIGH 68 LBS (31 KG). USE TWO (2) PEOPLE TO
REMOVE THE MDV FROM THE PACKAGING TO AVOID INJURY
6. Remove the packaging from the front forks steering assembly and handlebars.
Accessory Box. May be
located elsewhere
inside the carton

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 8
7. Use the 5mm hex wrench to loosen the handlebar retention screws as shown below
8. Slide the left handlebar into the handle bar clamp.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 9
9. Insert the handlebar so that it extends at least 40 mm past the inside of the stem.
10. Fasten, but do not tighten handlebar retention screws
11. Remove the right handlebar retention screws allowing the right side linkage arm to move away
from the stem

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 10
12. Place the right-side handle bar such that the display support bridges the stem. Take care to
make sure the display and control cables are behind the stem as shown below.
13. Then replace the right-side linkage arm and the handlebar retention screws. Fasten but do not
tighten the handlebar retention screws.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 11
14. Ensure that the right handlebar extends at least 40 mm in past the stem.
15. Tighten both sets of handlebar retention screws so that you can still rotate each handlebar and
slide the handlebar inside the stem.
16. Rotate the handlebars so that each side aligns, and they fit best for you.
Note: for additional adjustments after your first ride refer to the handlebar adjustment section later
in this document.
17. When you have aligned each handlebar, use a pattern of tightening the upper handlebar
retention screw and then bottom screw instead of tightening both top screws and then the
bottom screws.
1
2
4
3

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
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Warning: Tightening handlebar handlebar retention screws beyond 6Nm (53 in lbs.) or failing
to align the screws with the threads in the stem may strip threads in stem leading to
insufficient tightening of the handlebar. Failure to tighten handlebar sufficiently may result in
unexpected handlebar rotation that can result in accidental rider injury or death.
18. Open the accessory box to remove the two quick release skewers from the packaging.
19. Select which wheel will be the right-side wheel and the left-side wheel. Often, the wheels will
be labeled “L” or “R”. This means that the brakes have been adjusted differently for each wheel
–use the labels to guide which wheel mounts on which side.
Note: The left side is considered the side with the brake rotors. The right side has the chain and
gearing.
20. Unscrew the retention nut from one of the quick-release skewers and remove the associated
conical spring; insert the skewer into the left wheel from the side of the brake disc as shown
below on the right wheel below.
21. Replace the retention nut and conical spring as shown below.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
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23. Mount the wheel to the left fork as shown in the two pictures below. Be careful to slide the
brake rotor between the disc caliper.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 14
24. Make sure that the quick release retention nut and lever are seated in the fork dropouts.
25. Tighten the retention nut and close the quick-release lever once the wheel is mounted in the
fork. As a guideline the retention nut should begin to clamp when the lever points away from
the wheel at a right angle.
Warning: make sure to tighten the quick-release in the fork so that it cannot fall out of the
fork; failure to adequately tighten the quick-release can result in accidental rider injury or
death.
26. Place the MDV aside while performing the next two assembly steps.
27. Unscrew the retention nut from one of the quick-release skewers, remove the conical spring
and insert the skewer into the right wheel from the side opposite to the brake disc, as shown
below.
28. Replace the conical spring and retention nut.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
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29. Mount the wheel to the right fork. As with the Right Wheel, make sure that the brake rotor
slides between the brake calipers.
30. Tighten the retention nut and close the quick-release lever once the wheel is mounted in the
fork. As a guideline the retention nut should begin to clamp when the lever points away from
the wheel at a right angle.
Warning: make sure to tighten the quick-release in the fork so that it cannot fall out of the
fork; failure to adequately tighten the quick-release can result in accidental rider injury or
death.
31. Remove the pedals from the box and install the left pedal first –the left pedal is marked with an
“L” as shown below.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
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32. The left pedal is threaded backwards, so thread the shaft into the crank arm in a
counterclockwise motion as depicted below.
Caution: Do not force the threading of the pedal onto the crankset. Warranty does not cover
replacement cranks for stripped threads.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
Copyright 2018 Standard Bearer Machines, LLC 17
26. Use a 6mm Hex wrench to tighten the pedal.
27. Install the right pedal and finger tighten the pedal clockwise –the right pedal is marked with an
“R” as shown below.
Caution: Do not force the threading of the pedal onto the crankset. Warranty does not cover
replacement cranks for stripped threads.
28. Use a 6mm Hex wrench to tighten the pedal.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
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29. Inflate the Fat Tires between 5 and 10 PSI (34 to 69 KPa)
Note: Tire pressure plays a very important role in how you enjoy the MDV. If you plan to ride mostly
on soft ground like sand or snow, use a tire pressure between 5 (34 KPa) and 7 PSI (69 KPa) for best
traction and control as well as maximizing tread wear. If you and any load you’re carrying weigh less
than 200 lbs. (90 kg) use 5 psi (34 KPa). If your combined load is between 200 lbs. (90 kg) and 250 lbs.
(113 kg) use 6 psi (41 KPa). Use 7 psi (69 KPa) if your combined load is more than 250 lbs. (113 kg).
Caution: Avoid underinflating and over inflating the tires. Under inflation will prevent the tire from
seating on the tire and prevent you from riding the MDV. Over inflation (more than 15 PSI –103 KPa)
may result in tire blow-out while riding.
30. Loosen the Seat Post Clamp by opening the lever. Insert the seat post and adjust to the height
that suits you, then tighten the clamp by closing the lever.
Note: Failure to tighten the seat post can result in discomfort while riding the MDV.
Warning: DO NOT extend the seat post beyond the maximum height limit before clamping. This can
result in the seat post breaking and resulting in severe injury or death.
31. If you have purchased the optional Rear Rack or optional Range Doubler, refer to the
appropriate installation documents to install them before riding. If you have an internet
connection, click here to access the Rear Rack installation document. Click here to access the
Range Double Installation document.
32. Before riding, refer to the section How to Use Your New MDV.

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
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Cautions and Safety
General Cautions and Warnings
The Electric Juggernaut is an electric vehicle that you can ride like a bicycle with the added benefit of
more stability on soft ground.
Refer to the All Purpose Bicycle Manual available on the Rungu USB document drive that ships with the
Electric Juggernaut to new customers or online at this link
2
.
WARNING: The Electric Juggernaut has a tie-rod that connects the two front forks. DO
NOT USE the tie-rod to lift the MDV. The steering uses the tie rod as a hard stop so the forks don’t rub
against the front wheels. Grasping the tie rod when lifting WILL RESULT IN A PINCH TO THE HAND
AND FINGERS THAT MAY LEAD TO HAND OR FINGER INJURY. ONLY GRASP PARTS OF THE FRAME OR
SADDLE TO LIFT THE MDV.
2
http://riderungu.com/riderungu/wp-content/uploads/2016/08/Generic-Bike-Manual.pdf

V1.0 RUNGU Electric Juggernaut Mid-Drive Version (MDV) User Manual –2018 model year
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Battery Safety
NOTE: If you ever suspect a battery problem, please contact Rungu Support immediately by email or
phone so we can go through the appropriate steps/procedures to make sure everything is okay with
the battery system.
At Standard Bearer Machines, safety is our number one concern. Standard Bearer Machines wants our
customers to enjoy an excellent product that will give those customers years of trouble-free operation.
As much as Standard Bearer Machines and its battery manufacturers invest to minimize the risk of these
state-of-the-art batteries, there are always safety concerns with Lithium Ion Batteries. All new portable
electronics, including cell phones and laptops, contain lithium batteries. Rungu batteries use the same
technology but on a much bigger scale. Standard Bearer Machines makes every effort to have the
highest quality battery cells and best battery protection (called a BMS or Battery Management System)
to minimize any risk associated with these bigger batteries.
Standard Bearer Machines uses a battery chemistry that is
popular with production electric vehicles. The battery chemistry
is the same that large car manufacturers (such as Nissan) use in
their vehicles. This state-of-the-art battery chemistry is called
Lithium Nickel Manganese Cobalt (LiNiMnCoO2) or LiNMC for
short. The electric vehicle industry prefers this chemistry due to
the combination of power, safety, performance, and life span
compared to the other options available.
Each battery has a Battery Management System (BMS) built into
the battery to protect you and the Rungu from dangerous
battery faults. Lithium cells have a lot of energy stored in a small package. There is always a possibility a
battery cell fault can release this energy and can cause fire and/or severe injury unless the battery is
constantly monitored during discharging and charging. The state-of-the-art Battery Management System
found on all our battery packs do that. They continuously monitor the cells and pack to avoid failure.
Caution: Battery packs can fail as a result of a BMS failure, puncture or destruction of the battery
pack, or attempting to charge, short circuit, over discharge the battery cells in a way that doesn’t use
the protections of the BMS.
The main cause of failure in lithium batteries occurs during the charging portion, when cells can be
overcharged. This is the number one failure and can lead to batteries which vent and eventually release
all their energy at once (or can even cause the battery pack to catch fire). This can happen if the BMS
fails, you try to charge the pack using the output plug instead of the charging plug, or you use a charger
that isn’t designed to charge lithium ion batteries. Cells in the battery can fall out of balance and result
in a cell over charging, which leads to a fire. Standard Bearer Machines always recommends
disconnecting the battery and charging it away from the MDV.
Caution: Charging on a concrete floor, such as in a garage, away from debris and material is always
recommended as a safety precaution.