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Sunny Health & Fitness ASUNA SpaceFlex 7750 Treadmill

UnitSizeSupported
weight
InclineMotorConsole
programs
ASUNA 7750

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L:57"
W:29.5"
H:48"
220 lbsAutomatic,
12 levels
2.5 HP,
0.6-8.0 MPH
8 preset,
3 custom,
1 manual

The ASUNA SpaceFlex 7750 is one of the newest treadmill models released by Sunny Health & Fitness at the end of 2017. It’s a machine for walking and jogging, not for running at high speeds, but does offer a pretty impressive range of features, including a motorized incline system. It’s not an extremely large unit, has a compact design, and also offers dual folding possibilities.

Technical Details and Specifications

  • Assembled dimensions: 57L x 29.5W x 48H inches (145L x 75W x 122H cm)
  • Tread belt dimensions: 51.2L x 19W inches (130L x 48W cm)
  • Assembled weight: 127 lbs (57.6 kg)
  • Weight capacity: 220 lbs (100 kg)
  • Motor: 2.5 HP (peak), 0.6 – 8.0 MPH speed range
  • Incline: Automatic, 12 levels
  • Console: 12 programs (8 preset, 3 custom, 1 manual)
  • Amenities: Sound system, USB charging port, tablet holder,
  • Warranty: Frame 5 years / Parts 180 days

Frame & deck

As we’ve mentioned above, the Sunny Health & Fitness ASUNA SpaceFlex 7750 treadmill has quite a compact design. It’s not an extremely large machine; its assembled footprint is approx. 57″L x 29.5″W (145 x 75 cm). Of course, just as for any other treadmill, it is recommended to leave at least three feet of clearance at the rear, and at least two feet of clearance on each side, for safe operation. But on the other hand, this Sunny treadmill offers the possibility to be folded and stored vertically, or folded horizontally, with the console masts and console over the deck. When folded vertically, its dimensions become 12″D x 33″W x 59″H (31 x 84 x 150 cm).

As opposed to other treadmills with a folding design, such as the ProForm 705 CST or the Harison T360, the ASUNA 7750 folds slightly differently. It doesn’t have a hydraulic system. Also, Instead of folding the deck up, you fold the console masts and console down, over the deck. To store the unit vertically, you have to lift it up, after pulling out the second set of wheels on the front, top part of the deck, which also serve as stabilizers.

The fully assembled machine is pretty heavy; it weighs approx. 127 lbs (57.6 kg). This weight provides great stability, which is enhanced by its rubberized, adjustable stabilizers. Also, despite its weight, the unit can easily be relocated once it is assembled, as its front base is equipped with transport wheels.

The treadmill has quite a durable, heavy-duty steel frame with thick console masts. All the steel parts in its construction are coated with a chip-resistant and corrosion-resistant paint finish. The colors used are gray/white for the console masts, and black for the base frame.

The unit’s deck can support users up to 220 lbs (100 kg). It’s equipped with three shock absorption elements on each side. Walking or jogging on this treadmill results in considerably less impact on your joints than when walking or jogging on concrete or asphalt. Therefore, you can perform longer walks with less workout-related pain.

The side rail covers of the deck are made of durable ABS material. They feature anti-slip stickers which provide extra stability and foot adherence when you decide to rest without stopping the belt.

Since it’s a machine made for walking and jogging, its running platform is not as large as for a running treadmill, such as the Bowflex BXT216, for example. It’s 51.2″ (130 cm) long, and 19″ (48 cm) wide. This being said, it may not be the best choice for users taller than 6’2″ (188 cm).

Incline & step-up height

Although it’s a walking/jogging treadmill, the Sunny ASUNA 7750 is equipped with a motorized incline system. It offers 12 levels of incline, with an incline range between 0° and 5°. Of course, it’s not the 30%-40% of incline that other professional treadmills offer, but still, with the incline set at 5°, you can add quite a bit of difficulty to your workouts.

Since the machine’s incline is automatic, it can only be adjusted from the control keys built-in the left hand-grip. Evidently, the unit needs to be connected to a power circuit in order to adjust the incline. The adjustment increments are basically 1%, which is approx. half a degree. The console has quick incline buttons for the 3 and 5 incline levels. Also, some of the preset workout programs involve the incline system. So, when using one of them, the machine will auto-adjust the incline.

The deck’s step-up height is approx. 6″ (15.2 cm). When the incline is set up to the highest setting, the front of the deck will be elevated by approx. 2″ (5 cm). Therefore, it’s recommended to use the machine in a room with a ceiling that is at least 10″ (26 cm) higher than your own height.

Motor

This Sunny Health & Fitness treadmill is equipped with a motor similar to the SF-T7514 model. It offers a 2.5 HP (1.25 CHP) which is more than enough for walking or jogging workouts. It’s also powerful enough to support any user up to 220 lbs (100 kg), for prolonged exercising routines, without overheating or losing performance.

The motor offers a speed range between 0.6 MPH and 8.0 MPH. The speed can be adjusted from the controls built-in the right hand-grip. The adjustment increments are 0.1 MPH, which is pretty convenient, as the speed will slowly and gradually increase or decrease allowing you to adjust your pace. This also allows you to find the perfect pace for your workout.

Just as for the incline, the console has two quick keys for speed adjustment, one for 3.0 MPH, and the other for 5.0 MPH.

Two other aspects to mention here regard the level of noise generated and power consumption. The motor is far from being noisy, and during a walking workout, your cadence can barely be heard. Evidently, if running at 8.0 MPH, your cadence will be heard, and the unit will become louder, but it’s not loud enough to cover the sound of your TV on a moderate volume setting. While for power consumption, the motor is not exactly a very powerful one, so you won’t have to worry about high electricity bills even if you use the machine daily.

Console

The Sunny Health & Fitness ASUNA SpaceFlex 7750 is equipped with a LED console featuring 6 displays. From left to right, they indicate incline, pulse/calories, time/program, distance/mode, step count, and speed. There is a total of 8 buttons on the console, including Start, Pause, Program, Mode, and incline/speed quick controls for the 3 and 5 level settings.

Speed and distance can be set in imperial or metric units. Your pulse rate can only be monitored if you hold on to the sensors built-in the handlebars; the unit is not compatible with wireless HR chest strap transmitters. Also, there are countdown settings for time, distance, and calories, great to use if you want to set up goals for your workout when using the Manual mode.

The treadmill’s console unit does not have any online capabilities. It’s not compatible with any online fitness apps. However, it has 8 preset workout programs and 3 custom programs to keep you motivated.

The P1 – P8 preset programs are meant to cover various workouts, some of them focusing on helping you keep a higher heart rate for a more intense cardio workout, other are for endurance gain, and others are weight-loss oriented.

There is no classic 10/20 or 20/10 preset workout, but you can create your own via the Custom programs (U1, U2, U3). These allow you to create your own program profiles with the desired time, distance and incline settings.

In terms of amenities, there are three main features that we must mention here. One of them is the built-in sound system which is compatible with most MP3 players, smartphones, or tablets. It consists of two speakers, one on each side of the console, which render a pretty decent sound, considerably superior to the most phone-integrated speaker.

As USB port is available as well. This only serves for docking and charging your phone or tablet; it does not offer workout data transfer possibilities, like the console of the Schwinn 870 MY17, for example.

Last but not least, the console features a folding tablet holder. It’s placed at the rear/top of the console and is large enough to accommodate any tablet. It also has a non-slip surface.

Assembly & Maintenance

The ASUNA SpaceFlex 7750 requires very little assembly. It’s basically fully assembled and folded. All you have to do is unfold it, attach the side handlebars, and it should be ready for use. The manual provides clear assembly/unfolding instructions and schematics, and all the necessary tools are included.

Like most treadmills, the ASUNA 7750 requires periodic belt lubrication every few months. A small bottle of silicone lubricant is included with the unit. The walking belt should be kept clean, in order to prevent fibers or other small objects to be caught in the rollers or motor. And finally, it is recommended to periodically check for loose bolts and parts, to make sure the machine is in good condition.

The Pros

  • Folding frame which can be stored vertically or flat;
  • Two sets of transport wheels;
  • Adjustable, rubberized stabilizers;
  • Fairly small footprint, great for apartment use;
  • Three shock absorption cells on each side of the deck;
  • Automatic incline – 12 levels (up to 5°);
  • Speed range up to 8.0 MPH allowing jogging sessions;
  • Speed increments of 0.1 MPH giving you the possibility to find the perfect pace for your workout;
  • Speed and incline controls incorporated into the hand-grips;
  • Quick speed and incline buttons for the 3 and 5 level settings;
  • Pulse sensors included;
  • LED-based console with 6 displays which indicate incline, time, distance, step count, calories, pulse, and speed;
  • 8 preset programs;
  • 3 custom programs;
  • Goal settings for time, distance, and calories;
  • Sound system included;
  • USB charging port included;
  • Folding tablet holder included;
  • Very little assembly required;
  • Low maintenance.

The Cons

  • No cooling fan;
  • No online connectivity.

Summary

The Sunny Health & Fitness ASUNA SpaceFlex 7750 is a light-capacity treadmill designed for walking and jogging workouts. It features a folding frame, it’s equipped with a 2.5 HP (1.25 CHP) motor, motorized incline with 12 levels, and a durable deck which can hold users up to 220 lbs. Its console offers 8 preset programs and 3 custom programs. It offers great portability and storage possibilities. It’s perfect for light to medium intensity workouts, speed walking, muscle toning, stamina development and weight loss. It’s not exactly an affordable machine compared with other models in this feature range, but does offer great quality for the price.

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