Quick Answer: The damper controls how much air enters the flywheel housing, which changes the feel of each stroke - not the resistance level. Damper 10 feels heavy and slow like a barge; damper 3-5 feels light and quick like a racing shell. For most CrossFit workouts, 3-5 is faster and less fatiguing, and your split time is the only honest measure of effort.

Walk into any gym and you’ll find the rowers set to 10, because somebody decided years ago that 10 must mean hardest. It’s the single most common piece of equipment misuse in CrossFit, and it costs people seconds on every workout that includes a row.

What does the damper actually control?

The damper is an air vent. Sliding it up opens the housing so more air reaches the flywheel; sliding it down restricts airflow.

More air means the flywheel decelerates faster between strokes. That means each new stroke starts against a slower flywheel, so you have to accelerate more mass from a lower speed - which feels heavy and slow, like rowing a heavy boat.

Less air means the flywheel keeps spinning between strokes, so each stroke picks up a faster wheel. That feels light and quick.

Crucially: the machine measures work, not damper setting. The monitor calculates your split from how much you actually accelerate the flywheel. You can produce identical power output at damper 3 and damper 10 - the difference is what it feels like and how your muscles are loaded getting there.

What’s drag factor, and why does it matter more?

Damper number is a rough proxy. Drag factor is the actual measurement, and it accounts for something the damper number can’t: how dusty your machine’s flywheel housing is.

A clean machine at damper 5 might read a drag factor of 120. A gym rower that hasn’t been cleaned in two years might read 140 at the same damper setting, because dust in the screen restricts airflow unpredictably.

How to check it: on a Concept2, go to the main menu, select ‘Display Drag Factor,’ and row for about 10 strokes. The number that appears is your actual setting.

Useful drag factor targets:

• 110-130 for most people doing CrossFit metcons
• 120-140 for larger, stronger athletes
• 100-115 for lighter athletes or long steady pieces

Setting drag factor rather than damper number is why two athletes on ‘the same setting’ can be doing quite different things.

Which setting should I use for CrossFit workouts?

Short sprint intervals (250m, 30 seconds on): slightly higher, 5-7 or drag factor 130-140. Short pieces benefit from the heavier feel because you’re producing max force for a small number of strokes and the flywheel speed matters less.

Standard metcon rows (500m-1000m within a workout): 4-6, drag factor 115-130. This is the range most CrossFit rows should live in.

Long pieces (2000m+, or rows within a long chipper): 3-5, drag factor 110-125. Lower settings are less taxing on the posterior chain, which matters when you have deadlifts or box jumps later in the workout.

The critical CrossFit-specific point: a high damper loads your legs, glutes, and lower back significantly more per stroke. If your workout has a 1000m row followed by 50 wall balls, rowing at damper 10 means arriving at the wall balls with pre-fatigued quads. The row is rarely the point of the workout - don’t let it steal the rest of it.

Myth vs Fact: The Rowing Damper

Myth: Damper 10 is a harder workout. Fact: Damper 10 makes each stroke feel harder while typically producing a slower split for the same effort, because most people can’t maintain stroke rate against the higher load. You work harder to go slower.

Myth: Elite rowers use high damper settings. Fact: Most competitive rowers train at drag factors around 120-135, corresponding to roughly damper 3-5 on a clean machine. The people who row for a living use the middle of the range.

Myth: The damper is a resistance level, like on a stationary bike. Fact: It’s a feel adjustment. Your resistance comes from how hard you pull - the machine can’t limit that.

Myth: Higher damper builds more strength. Fact: If you want the row to build leg strength, that’s a legitimate reason to go higher on short pieces. But for conditioning, it mostly redistributes fatigue toward your back and away from your engine.

Myth: You should find your setting and never change it. Fact: Matching setting to workout is the whole point. A 250m sprint and a 2000m piece deserve different settings, the same way you’d use different weights for a heavy single and a 20-rep set.

FAQ: Rowing Damper Questions, Answered

What’s a good split to aim for in a metcon?

Depends entirely on your size and fitness, but a useful rule is that your metcon row pace should feel like a pace you could hold for double the distance. If you can’t, you’re going to pay for it in the next movement.

Should I change the damper mid-workout?

No - it costs you time and the disruption isn’t worth it. Set it before the clock starts.

Does the same logic apply to the ski erg and bike erg?

Yes for the ski erg, which uses the same flywheel-and-damper system. The bike erg has a fixed damper on most models, so the variable isn’t available.

TL;DR:

• The damper is an air vent controlling flywheel feel, not a resistance level
• Damper 10 feels heavy and usually produces slower splits for the same effort
• Check drag factor, not damper number - dusty machines read very differently
• Most CrossFit metcon rows belong at damper 4-6, drag factor 115-130
• High damper pre-fatigues your legs and back for whatever comes after the row

The monitor doesn’t care what number the damper says. It only cares how fast you moved the wheel.