questions about dynamic erg's seat!

[cooperschwartz]

when i row on my dynamic, after a while the seat starts to hit its front and back bumpers. the footboard thing also hits the seat's front bumper. how can i stop this? i dont really get why the seat moves in the first place...
please help, this problem is very disruptive when i try to row, and it is the only thing stopping me from doing it regularly. i would like to start rowing every day, but i cant even row for a few minutes without having to stop because of my seat.

[Bob S.]

when i row on my dynamic, after a while the seat starts to hit its front and back bumpers. the footboard thing also hits the seat's front bumper. how can i stop this? i dont really get why the seat moves in the first place...
please help, this problem is very disruptive when i try to row, and it is the only thing stopping me from doing it regularly. i would like to start rowing every day, but i cant even row for a few minutes without having to stop because of my seat.

Have you checked the seat bungee and its attachment? It should be really tight when the seat is pushed to either of the stops. When I pluck it like an instrument string, my wife tells me that I am getting a B note at the front stop and a D note at the rear. They the ones bracketing the C below middleC, but she said that there were a lot of overtones, so she was not quite sure of the octave range. I wouldn't have any idea myself. In any case, a much lower tone would indicate a failing bungee.

Since bungees are rubber, they will deteriorate over time, especially if exposed to smog. I used to have a model D on slides and the slide bungees had to be replaced occasionally. Bungees that are under a lot of tension are especially vulnerable to deterioration from attack by ozone.

Bob S.

[carlb]

when i row on my dynamic, after a while the seat starts to hit its front and back bumpers. the footboard thing also hits the seat's front bumper. how can i stop this? i dont really get why the seat moves in the first place...
please help, this problem is very disruptive when i try to row, and it is the only thing stopping me from doing it regularly. i would like to start rowing every day, but i cant even row for a few minutes without having to stop because of my seat.

The reason the DIR seat moves is to simulate on water rowing in a boat. Nothing in the boat is fixed to the water the way a Model A,B,C,D,E erg is locked to the ground.

Read BioRow 10-2010 http://www.biorow.com/RBN_en_2010_files ... News10.pdf
question 2 "What sort of interpretation can be given for the seat movement on DIR [Dynamic Indoor Rower] ?"

You probably have to adjust your techinique. I think you have to be smoother with good timing of feet and hands, just like in a boat. The Faults and Corrections on the Concept2 UK site may help. Get a mirror so you can see yourself row. Watch that your seat makes one of the 2 patterns described in the Biorow article. And watch for the faults.

Biorow exceprt:
Conclusion: seat movement on Concept2 Dynamic Erg
is a good indicator of rowing style: Consequential style
causes change of the direction of the seat movement during the
drive and recovery; in simultaneous style the seat moves continuously
towards the stern during the drive and to the bow during
recovery. A similar phenomenon can be observed on-water or
with erg on slides, but it is more obvious on DIR because the seat
moves relative to the stationary frame.

Here's a discussion of rowing styles from 03-2006
http://www.biorow.com/RBN_en_2006_files ... News03.pdf