Rocker plates effect on reported power and interval lag

Does anyone have any actual experience with ‘rocker plates’ on Zwift? Essentially they are a large platform on top of which you put your trainer, which allows the trainer to ‘bob’ side-to-side and sometimes forward and back slightly. The list of benefits (and drawbacks/sceptics!) are legion but I’m just wondering if anyone here has had a go with them on Zwift?

The main things I’m wondering are:

Do they affect your power noticeably on the screen (i.e. loss from the squishing vs increase from more muscle groups being employed)?

Do they cause any noticeable lag or fluctuations for intervals/ERG (e.g. when the trainer adds sudden HIIT resistance and you wind up, is your response dampened by the rocking)? Basically, if you’re doing 30sec on/off HIT, does this become impossible to get the stars because of lag.



Hi Marcus,

There are a lot of information on the zwift rocker plates FB group.

I’ve had a rocker plate for a long time and I didn’t specifically worry about the things you’re asking but here’s my $0.02 worth.

It doesn’t take much force to rock the rocker plate so I seriously doubt it’s taking much of energy out of the system. I certainly never noticed my average power seeming lower and my trainer power is still consistent with my on the road power #s.

I don’t perceive any issues with ERG mode.

At this point, I would not want to ever ride a fixed trainer again but it did take me a little time to adjust (4 or 5 rides). The rocker adds some has some inertia so when standing and sprinting it felt different than on the road. I’ve adapted now and don’t notice it anymore. It took a try or two to get the bike mounted on the center line and the plate perfectly flat that bothered me at first. I now notice it if one side is low on the air but I live with it until I remember to add air.

I highly recommend one.

Ride On!