Dynamic

The Dynamic RowErg more closely simulates the physics experienced while rowing a racing shell and the "dynamics" between the boat and athlete. On the dynamic erg, a user's body mass is relatively stationary while components of the machine actively move in response to the rowing motion, similar to the way a lightweight rowing shell moves around the rower's body.

The functional difference between the Dynamic and the Model D or E is that as you row, your footrests do most of the moving rather than the seat. The seat is also free to move, but due to the physics of rowing, the seat movement is minimal.

The Dynamic encourages body control, early body preparation and good “connection” between the oar handle and footrests during the drive. On the Dynamic, body mass movement is minimized during the stroke cycle, while on a Model D or E, total body mass moves back and forth during the stroke cycle.

The design of the Dynamic RowErg has allowed us to reduce the handle return tension significantly compared to our Model D and E. Handle return tension, inherent in erg rowing, is not something experienced in the boat, so we view this lower tension as a positive feature. The tension is set low when we ship the Dynamic RowErg, and we suggest rowing with it like this for a while before choosing to tighten the bungee if you really want it to feel “more like an erg.”

Both the Dynamic RowErg and the RowErg on Slides attempt to mimic boat dynamics. The Dynamic offers a feeling of rowing in a lightweight shell, because only the foot carriage is moving. This is consistent with the footrests fixed within a boat, where the boat is surging with each stroke relative to the water. The Model D on Slides is more like rowing in a heavy boat, due to the movement of the entire mass of the machine. Both the Slides and the Dynamic (when used with the Dynamic Link) allow you to connect multiple ergs for rowing as a team.

For general fitness, the Concept2 RowErg may be a better choice, since it provides an efficient workout for all abilities. The RowErg is our most affordable option for those looking for a rowing workout.

Athletes who are looking for a more specific technical approach should consider the Dynamic. It encourages the rower to use the same precise coordination, connection and power application required to achieve maximum speed in a racing boat. The Model D is currently still the standard for rowers who are training for indoor rowing competitions, attempting world records, or submitting scores for recruiting.

You should understand the differences between our RowErgs before considering the Dynamic only because of its size. In use, the Dynamic has a smaller footprint, (76 inches/193 cm) than either a RowErg (96 inches/244 cm) or a RowErg on Slides (132 inches/335 cm). However, the RowErg can be quickly separated into two compact pieces for moving and storage. All models include caster wheels to make moving them easy. The Dynamic, however, does not separate for storage and the assembled unit weighs 92 pounds (42 kg); it works best in a dedicated location. It is important to understand the function of the Dynamic before choosing it on the basis of its footprint.

The RowErg is engineered to be our quietest machines. The complexity of the Dynamic’s action involves more moving parts. These moving parts generate more sound.

There are no tests that can claim that the Dynamic is better for backs, knees, or other injuries; however, there are important differences between traditional ergs and the Dynamic that may address the source of problems for some people. On a static erg, body weight moves back and forth, changing the direction of that moving mass (the body) every stroke with the back, core muscles and hamstrings. Perhaps the more significant difference is that the Dynamic promotes rowing at a higher stroke rate than when rowing on the RowErg, more similar to an on-water stroke rating.

It is commonly understood that intense rowing at low stroke ratings results in high force per stroke, which is transmitted through the rower's body. Higher stroke ratings on the Dynamic result in a lower force per stroke for the same level of power output.

On the Dynamic RowErg, the flywheel is located near the athlete, providing some airflow from below while you row. All Concept2 Dynamic RowErgs now ship with an optional Wind Shield. The clear plastic Wind Shield is located on the top of the flywheel and designed to deflect air coming from the flywheel away from the rower’s body. Athletes who prefer the additional breeze can easily slip the Wind Shield off.

Using the Wind Shield will slightly reduce the drag factor at the current setting. The flywheel damper may be adjusted as needed to maintain the desired feel. Learn more about damper setting and drag factor on the Damper Setting 101 page.

Customers who purchased a Dynamic RowErg prior to the Wind Shield’s release may call customer service for details on obtaining this accessory as a retrofit. The Wind Shield is also available as a replacement part.

The drive system of the Dynamic RowErg uses a high-tech, high-strength synthetic cord. The cord's light weight results in a system that is more responsive to the rower's movements and reacts more quickly, especially at high stroke rates. Using a cord instead of a heavier chain makes a lighter handle return force possible, which is more similar to the feel of rowing in a boat.

The synthetic cord is three-and-a-half times stronger than the RowErg chain, and is used for sailboat rigging, commercial fishing nets, industrial lifts and slings, and even trapeze support ropes. However, monitoring the cord is an essential part of routine maintenance. Owners of Dynamic RowErgs should inspect the cord regularly for visible signs of wear. The cord may become fuzzy, but does not need replacing until the fibers begin to separate.

There are dynamic and mechanical differences that work both in favor of and against each type of RowErg. Times may vary slightly depending on the individual. We are finding that there is a learning curve, and as individuals spend more time on the Dynamic, their times become more similar to what they expect on the RowErg.

There are no planned changes for the World Rowing Indoor Championships. Race directors make individual decisions on what events to include in their races, so some indoor races may incorporate the Dynamic RowErg at their discretion.