Exerfly - Motorized Technology

Common Questions

What is Exerfly Motorized Technology, and do I need it?

Exerfly Motorized Technology is an optional addition to any Exerfly product. It takes the 1:1 (concentric:eccentric) resistance of standard flywheel training and uses a motor to add extra resistance in the eccentric phase, giving you a precise, progressive way to train eccentric overload.
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Add 1 to 80% more resistance than your concentric effort, in increments as small as 1%. This enables eccentric overload training at a wide range of loads and speeds that replicate high-performance sport demands and build injury resilience.
It's recommended for athletes and advanced users seeking superior loading capacity and a unique training advantage.

How does Exerfly Motorized Technology differ to other motorized resistance devices?

Most motorized resistance devices create eccentric overload by adding a set amount of load to the lowering phase. You choose that load and it stays locked across the set, the same every rep.

Exerfly works differently. We start with a proven loading mechanism, built with premium hardware, and add the precision and capacity of motorized resistance on top. Because the flywheel responds to the force and speed you put into each rep, the load adapts as you go. Push harder and you get more back. The motor then adds up to 80% eccentric overload, scaled to your concentric effort.

This enables a wide range of loads and speeds in one system. The hardware is built to generate very high resistances when an athlete is strong enough to produce them, and to deliver those loads across a broad range of movement speeds, so the same device suits everything from heavy strength work to fast, explosive training.

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How do you set the eccentric overload percentage?

You can set the eccentric overload percentage in two ways: in your workout settings in the Exerfly app, or directly on the device console.

What is the windup function?

When enabled, the windup function starts a 10-second countdown, then automatically winds in the rope to set up your first rep. It's useful for training solo, letting you get into your starting position without having to wind the rope in by hand.

Can I upgrade my Exerfly device to motorized later?

Exerfly devices are designed as complete, ready-to-use solutions, so on-site upgrades are not available due to high shipping and service costs. Choose your configuration upfront for the best long-term value.

Still have questions? View our full FAQ's or Contact us.

Performance Training with Motorized Flywheel Technology

Accelerate results

Motorized Flywheel Technology delivers faster developments in strength, power, and muscular endurance than traditional resistance training and traditional flywheel training.

Optimized training intensity

The unique combination of eccentric overload and user-defined resistance work together to ensure athletes are consistently training with the optimal intensity, maximizing strength and power gains while avoiding overtraining.

Safely replicate the high loads athletes experience in sport

Train game-speed deceleration and direction changes, safely and effectively.

Train for both high speed and high force demands in one movement

Motorized flywheel resistance enables eccentric overload at both high velocities and high forces, replicating the explosive demands of elite sport while building resilience against injury.

“For a coach who primarily works with team sport athletes we prize deceleration capabilities as high, if not higher, than speed.  Doing intense deceleration training can lead to soreness, impair recovery, or conflict with a competition schedule. The Exerfly accommodates to our athletes output on a given day and has been quicker to recover from leading to better results, faster, even with a congested calendar.”

Ryan Patrick

Peak Fitness & Sports Training

“Exerfly served as a very good adjunct to my later stage post-op athletes as well as utilizing it during my strength classes for athletes that present with power and/or strength deficits. Recommended for all clinics and/or gyms with a sports performance focus.”

Alex Gett

Perform Strong Physical Therapy

“The reason why I like using Exerfly in training is the gains are so much faster than traditional lifting and you get immediate buy-in. It is more engaging and fun for the typical client because they are learning something new, it's not your typical squat, core, or rowing exercise.”

Jose Catano

Catano performance

“Our overuse injuries have dropped to the lowest level they have been in recent years."

Connor Derbidge

Strength & Conditioning Coach, Charlton Athletic FC

“How can I prepare my athletes with high forces without jumping? I found that flywheel, especially Exerfly and its motorized technology was the best way to do that.”

Jan Seiler

Strength Training Expert at the Swiss Federal Institute of Sport

See Results From Applications in the Field

Accelerating ACL Rehabilitation with Motorized Flywheel Training

After just 8 weeks of utilizing Exerfly's Motorized Flywheel Technology, athletes achieved 14% increase in CMJ height, 39% in squat, 58% in single leg jump height with the injured limb, 46% in braking force with injured limb, and 35% in single leg jump height symmetry index.

View Case Study

Rebuilding Strength and Power Post-ACLR: Remarkable Results in 10-Month Rehab

Increase in hamstring eccentric strength by 93N on the affected side and a decrease in asymmetry from 14.5% to 3.3%. Jump height improved by 2.4 cm, peak power increased by 412W, and the rate of strength development surpassed normative data ranges.

View Case Study

Motorized Flywheel Technology Boosts Jump Performance in Just 5 Weeks

Significant improvements in countermovement jump (CMJ) metrics, with braking force increasing by 39%, modified reactive strength index (mRSI) improving by 19%, and CMJ height increasing by 5%.

View Case Study

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