Exxentric kBox 3 User manual

kBox 3
PRODUCT MANUAL
Version 2 - May 2015

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Personal injury may occur if these precautions are not observed.
Read and understand warning labels and user manual prior to use.
The kBox can be deliver a supramaximal workload. Don’t exercise at an intensity you
can’t manage.
Workout at a submaximal intensity until you are familiar with the equipment.
If you feel faint, dizzy or pain, stop exercising immediately.
Exxentric takes no responsibility for any injuries that might occur.
Keep away from moving and rotating parts.
This machine and accessories are intended for strength training only. Do not use in any
other way.
Exercising at maximum intensity may cause temporary staggering and uncontrolled
body movements due to fatigue. Be careful not to fall.
The machine might get slippery when wet. Use shoes and dry machine with a cloth
when wet.
Never stop an exercise in top position.
Both feet have to be placed on the kBox during exercise if it’s not fixed to the ground.
Always place the kBox on a leveled surface.
If you have balance problems, be sure to have support by partner or fixed object like a
wall.
Always make sure children and pets can’t access the machine.
Inspect the machine before use. Damaged or worn parts and warning labels must be
replaced. See user manual for how to change and cut the drive belt. Do not modify the
machine or repair it with non OEM parts.

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This Manual covers a description of the Kinetic Box, or kBox, a
Flywheel Exercise Platform, a guide to its use, and how to
maintain it.
Always check EXXENTRIC.COM for latest info and manuals.
INTRODUCTION Page 4
FEATURES OF THE KBOX Page 6
USING THE KBOX Page 8
MAINTENANCE Page 12
KMETER Page 14
ACCESSORIES Page 15
WARRANTY Page 16
Included with the kBox:
• Flywheel, one heavy (inertia 0.05 kgm2)
• Pulley
• Product Manual
• Replacement Drive Belt + Locking Pin Removal Tool
Specifications:
Foot Print: 100 cm. (40 in.) X 50 cm (20 in)
Weight: 15.6 kgs (kBox only).
Shipping Weight (kBox, 4 flywheels, harness, Shipping Box): ≈40 kg
Material: kBox - Powder Coated Aluminum
Flywheels - Steel
CAUTION!
Like any exercise program, it’s important that
users are capable of performing exercises on
this exercise equipment and have verified this
with their personal physician.

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INTRODUCTION
What is it? The kBox is a self-contained, compact exercise platform for various
strength movements. It is a flywheel exercise device and uses the
physics of inertia and mass acceleration (centrifugal) to provide a high
and variable resistance in both the concentric and eccentric movements
of the user.
How Does It Work? The kBox has an adjustable-length drive belt wound around a shaft
located beneath the platform. Different combinations of flywheels are
mounted on the end of the shaft.
Using hand grips or a harness attached to the Pulley, the User pulls to
accelerate the flywheel and then resists to decelerate the flywheel as
the Belt winds in the other direction.
A Drive Belt Length Adjustment Button allows for quick adjustment of
the Belt length for the type strength work desired. Push the button to
release and adjust length or just push button to automatically retract the
belt. An extension belt is used for overhead work.
Main Parts of the kBox
Flywheel Retaining Nut
Flywheel
Belt
Pulley
Foot Placement Area
Adjustable Foot Support
Drive Belt Length Adjustment Lever

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INTRODUCTION (cont.)
Setting Up the kBox The Platform can be attached to the floor if desired. There are
attachment holes on each foot.
If training without both feet on the platform is anticipated, the platform
must be attached to the floor.
The Flywheel There are two different weight flywheels included with the kBox giving
different rotational weights. The flywheels are heavy (0.05 kgm2) and
light (0.025 kgm2). You can mount 4 flywheels at the same time giving
a range of 0.025-0.2 kgm2). Do not try to mount more than 4 flywheels.
Experimentation will determine which configuration is required for your
level of training, check Training Guide for more info. Mounting or
changing flywheels is done by unscrewing the large Retaining Nut and
sliding on the flywheel. When tighten the Nut, apply adequate force. If
there is a sound when flywheels are spinning, try to tighten the nut.
Axle is hexagonal for easier fit.
Foot Support The Foot Support can be positioned using the two thumbscrews on
each bar to allow optimum foot position for the user. Under high
loads, these supports are important in setting and maintaining foot
placement. Use the side with low angle for lateral movement (right
picture) and the other side if you just want to maintain foot placement
during vertical work (left picture).
Strap Length Adjustment Dial
Adjustable Feet Support Bar

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FEATURES OF THE KBOX
Principle of the kBox The kBox is a ‘flywheel exercise device’, often referred to as an FWED.
What muscle is being exercised depends on which exercise is being
performed.
The principle is through muscle force you accelerate and decelerate a
flywheel (or flywheels). Repeated exercises with high intensity
produces high forces that stimulate muscles to hypertrophy and
increase activation of the nervous system. These effects together
increase strength over time if the exercise is repeated regularly.
Resistance The resistance is variable and unlimited. The flywheel has inertia and
there is no upper limit to how much kinetic energy you can produce in
the flywheel motion. You can think of the flywheel as a weight that
weighs more if you put more effort into lifting it. Resistance is variable
so if you pull less the flywheel will resist less.
Every repetition in a maximal set is maximal instead of only the last one
which is the case with traditional weights. This results in a higher
training efficiency and earlier onset of strength increase and
hypertrophy.
Eccentric Loading The kBox provides for increased eccentric workloads. The skeletal
muscles can produce higher force in the eccentric, or negative phase.
This is difficult to take advantage of with traditional weights, which
always weigh the same.
If you accelerate the flywheel during the concentric, or lifting phase
and then decelerate in a shorter amount of time, you will have to
produce a higher eccentric force. This would be similar to lifting a too-
heavy weight with help from training partners but do the eccentric
phase by your self. Check Training Guide for more info.
Mobility The kBox is mobile in comparison to traditional weights. Squatting with
the kBox is equivalent to traditional squats which would require a
barbell, weights up to 500 lb. for a strong lifter which is practically
impossible to carry around. In addition you’d need rubber
note that......
the higher efficiency of the kBox may require longer
periods of rest between sets and training days
to fully recover.

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FEATURES OF THE KBOX (cont.)
Mobility (cont.) mats, racks for the weights, assisting personal or training partners to be
able to do 1 RM (Maximal repetitions). All this is possible with the
kBox which weighs about 25 kg with the flywheels included and it can
be easily carried and transported in an ordinary car.
Ergonomics Pressure over the shoulders is one limiting factor for many when doing
traditional barbell squats. Serious bruising can be seen after heavy sets.
Furthermore, the lumbar spine discs are under a lot of pressure, even if
the athlete has good technique. With tall people, people with a weak
core, or with back problems, squatting is almost impossible or
accompanied with a lot of discomfort or pain. With the kBox you are
able to work out maximally or closer to maximum intensity since the
harness equalizes the pressure over the shoulders and reduces the
pressure and torque on the lumbar spine.
Work Environment The kBox is quieter when training. The area doesn’t have to be
equipped with sound reducing materials. There is a much lower risk of
collision so that more people can work out in a smaller room without
interfering with each other’s workout.

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USING THE KBOX
Foot Placement The Foot Support can be positioned using the two thumb screws to
allow optimum foot position for the user. Under high load, having a
stable foot guard is especially important. The Short foot support can
also be used as a heel support when doing squats or elevation for calf
press when facing the short side.
Using the Harness Attach the Harness to the Pulley with the Harness ends twisted inwards
which give a smoother contact with the thigh. Observe that in kBox 2.5
and later versions there is a snap shackle (left picture) instead of a
closing hook (right). The snap shackle makes it possible to have an
emergency release, just attach a cord in the snap shackle pin for the
athlete or trainer to hold and just pull to release.
Be certain the harness fits comfortably and is not too loose (various
sizes are available). It should not slip down over the shoulders. Upper
chest strap can be loose and bottom strap more tight for best comfort.

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USING THE KBOX (cont.)
Using the Harness (cont.) Use the Drive Belt Length Adjustment Button to set the Belt length to
allow the Belt to fully reach the upper end of the exercise movement.
For beginners, rehab patients, and upper body exercises, the top
position should be just before all active joints are fully extended. For
experienced users, there can be some slack in the top position to
minimize strain on the belt and hook at the reversal point. Remember,
though, to not stop the movement in an extended position when the
flywheel is spinning as this will put strain on your joints.
Exercising with harness Bend your knees slightly and take up the slack in the Belt using your
hand to rotate the flywheel and rewind some of the belt.
Now, accelerate the flywheel by starting the exercise at a lower
intensity. Accelerate the flywheel at every repetition. After two to four
repetitions you should have reached your desired training intensity.
Perform your training set, usually 6 -12 repetitions at desired intensity.
Decelerate the flywheel on the way down and stop at the bottom.
Slowly return to your start position and let the flywheel stop
completely.
Unlock the harness, step off the platform and prepare yourself for the
next set. Rest accordingly between sets.
Demonstration videos of
various training exercises
are available for viewing
at Exxentric.com

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USING THE KBOX (cont.)
Using the Grip/Bar Attach the desired Grip or Bar.
Position your feet as described above.
Use the Drive Belt Length Adjustment Button to set the top position for
the actual exercise. As with the harness, for beginners, rehab patients,
and upper body exercises, the top position should be just before all
active joints are fully extended. For experienced users, there can be
some slack in the top position to minimize strain on the belt and hook
at the reversal point. Remember, though, to not stop the movement in
an extended position, as this will put strain on your joints.
Put the flywheel in motion to roll up the belt. Accelerate the flywheel
by starting the exercise at a lower intensity. Accelerate the flywheel at
every repetition. After two to four repetitions you should have reached
your desired training intensity.
Perform your training set, usually 6 -12 repetitions.
Decelerate and stop the flywheel on the way down. Don’t put down the
handle or grip before the flywheel(s) has come to a complete stop. Rest
accordingly.

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USING THE KBOX (cont.)
Centering yourself on the platform You’ll notice that the lift center is not above the shaft but a little to the
right if facing the flywheel side. So position yourself slightly to the right
to be over this line with the Pulley during exercise.

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KBOX MAINTENANCE
Drive Belt Cautions The Drive Belt and its attachment to the axle is the most sensitive part
of the kBox. Be attentive to wear and check regularly.
When the Belt shows signs of wear, trim the end by cutting off the
damaged area or replace it with an original spare Drive Belt.
Cutting off a damaged Belt If damage occurs close to the end, it may be possible to simply cut off
the damaged end and reattach the new end. Procedure:
• Unwind all of the belt from the shaft (left picture).
• Use the Locking Pin Removal Tool to push the Belt through the shaft
and remove the Locking Pin (right picture).
• Cut off the damaged Belt.
• Wrap Belt around Locking Pin and pull the Belt and Pin into the
wider grove in the shaft.
• The Belt automatically locks into the grove when you pull it firmly.
Video: http://youtu.be/xDqOjqTFFSY

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Replacing the Drive Belt Remove the Belt end attached to the axle as described above and push
the Belt Adjustment Lever and pull that end of the Belt through the
opening in the platform. Follow these steps to complete the
replacement:
1. Remove the Belt all the way from the shaft to the take-up spool.
2. When you detach the Belt from the take-up spool, make sure the
take-up spool is fixated so the spring doesn’t unwind and loose its
tension since this can damage the spring.
3. Attach new Drive Belt at the take-up spool.
4. Reassemble the Belt all the way back to the shaft in the reverse order
from when you removed it. Attach the Belt to shaft after you have made
certain that the Pulley is connected and the Belt isn’t twisted.
Video: http://youtu.be/EkRQdeEZ6g8
Take-up spool

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kMeter
Overview kMeter Module is connected to built-in rotational sensor under the
kBox with the 4-pin connector. kMeter Module is powered with a
standard 9 V battery.
After release in may 2015 all new kBoxes are delivered with a kMeter
Module. kMeter Module sends wireless data over Bluetooth to the
corresponding iOS app, Exxentric kMeter which is downloaded for free
from Apple AppStore. kMeter App uses rotational data and user-input of
inertia to calculate and present power in real-time and a set summary
containing average power for every rep, average power for set, peak
power in CON and ECC for every rep and for set in total, range of
motion, force, no. reps, ave. rep time and energy expenditure. User can
input training data after completed set (exercise, comment and VAS 0-
10 to be used for pain or exertion for example. All data can be stored in
an in-app database for later view in the app or exported to Excel.
Download App Free download in AppStore
https://itunes.apple.com/us/app/exxentric-kmeter/id979885523?mt=8
Video overview of app YouTube: kMeter App 1.0 launch
https://youtu.be/WoNV1e3i1Rk

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KBOX ACCESSORIES
kBar kGrip
Flywheels Extension cord
Harness kMeter Module

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WARRANTY
Valid from 03-10-2013
•THE TERMS AND CONDITION’S APPLICABILITY. This Agreement applies only to the sale of products in new
condition in the EU or in a market where a certified dealer is established. For the individual consumer,
warranty runs from the original delivery date for 12 months in parallel with the conditions specified in
the current consumer law. For trade companies, warranty runs for 12 months from the original delivery
date and with the conditions set out in this agreement
•PARTIES OBLIGATIONS Exxentric undertake - with the exception of the cases specified in paragraph 5 below -
in case of malfunction or damage to the product to replace defective parts. More extensive repairs are to
be carried out by an Exxentric designated service center.
•WHAT CONSTITUTES AN ERROR Errors are professionaly determied deviations from the normal standard that
manifests itself during the period specified in paragraph 1. The product is considered defective if it differs
in the manner stated above and is not, according to Exxentric, likely to be defect due to accident or
circumstances that are otherwise attributable to the buyer.
•TROUBLESHOOTING Rectification of defects or delivery of replacement parts will take place within a
reasonable time after the buyer notified the error and, if so requested by Exxentric, made the product
available to the action of a designated service center. What is considered a reasonable time is
determined by the buyer's need for the product, the nature and scope of the error, difficulties in
determining the error and access to spare parts and engineering capacity.
•LIMITATION OF SELLER / EXXENTRIC’S COMMITMENT Exxentric’s responibility does not cover the product’s
consumable parts and wear parts such as for example drive belts, extension cords, snap hooks, rubber
mats and feet pads. Also, the warranty does not cover what is considered as normal wear and tear,
normal corrosion, or defects in paint or other coating. Also, the buyer may not claim rectification for
deficiencies which the seller can show were caused by for example:
•- that repair or service was done elsewhere than at an authorized Exxentric service center
•- that non OEM components were used
•- that use of the product continued after the defect was first noticed
•- that the product has been used in ways for which it is not designed or sized
•- that the product has been abused
•- that the product has not been used with normal care
•- that the care regulations as per existing instructions have not been carefully observed.
•TRANSPORT SAFETY AND TRANSPORTATION EXPENSE. For repair of extensive defects, the purchaser shall
bring the product to a designated service center. Buyer shall after the defect has been remedied pick up
the product from the seller or the designated service center. The product can also be dispatched by the
buyer to the seller or to the designated service center. Such transportation shall be at the buyer's sole risk
and expense. Replacement parts which the buyer can be expected to replace on his/her own are
delivered free of charge to the buyer.
•LIMITATIONS OF LIABILITY. For individual consumer, the limitation of liability as stated in the current
applicable Consumer sales rules, applies. The buyer is therefore not entitled to compensation beyond
what is covered under (2). For commercial customers, Exxentric’s liability is limited to what is stated in
this agreement. The buyer, therefore, is not entitled to compensation for economic damages beyond the
terms specified above, i e not for personal injury or property damage. Buyer is reminded once again the
importance of the product being handled with care and in accordance with the operating manual’s
instructions!
DISPUTES. Disputes concerning the interpretation or application of this Warranty Agreement shall in the first
instance be resolved by agreement between the parties. If such an agreement can not be reached, the dispute

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shall be settled finalyy by arbitration at the Stockholm Chamber of Commerce Arbitration Institute (the Institute).
The Rules for Expedited Arbitrations shall apply unless the Institute with regard to the case, the amount in dispute
and other circumstances, determines the rules of the Stockholm Chamber of Commerce Arbitration Institute shall
apply to proceedings. In the latter case the Institute shall also decide whether the arbitral tribunal shall be
composed of one or three arbitrators.
Exxentric AB -Aroseniusvagen 31, 168 50 Bromma, SWEDEN
[e-mail] - www.exxentric.com (art.no 18273)