Pardon the super rude sketch, but it is roughly like this. A curved upper deck support, riding on two lower rollers. The shape is “proprietary”, but it effectively creates an elevated roll axis at the intersection of the green lines. The shape and curve can all be manipulated to fine tune that location and the resulting feel.
Thanks, that’s interesting. So in theory, the top part (red/green) is separate from the bottom part (black/blue)?
The red arc that rolls on the blue axles? I don’t understand what the long 5’ metal axles do.
Well, my super simple sketch was meant to imply the concept.
If you look closely to their picture, you can see that the black part there, has slots and is roughly what my red part is. That actually has full closure around the slider wheels (my blue parts) to connect the top and bottom together. It is connected in a way that you pick up the top, and the bottom comes along. It’s more complex and proper than the hack sketch I did to convey the basic concept.
The shafts in their pic above are part of the fore-aft system. It is the linear shaft and bearing concept used in the other common rockers like the Velocity one.
thanks, I’d missed that completely.
I just saw this thing pop up on @dcrainmaker IG feed. Looks pretty swish.
€1395 is a bit exclusive though 
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I’m waiting for the JetBlack (generic Rocker plate) to be back in stock myself.
Yeah, we have been chatting about this in the FB group. I am not in love with it overall, but there are some interesting details. I find a large disconnect between the two ends. The front is very cool and well designed. Then the rear looks like a garage level build by comparison. The added fact that it relies on a smooth and level floor is an odd choice. I have no idea why they didn’t do a complete frame with the motion essentially like the front?
The price is massive and prohibitive to be sure. I also think their setup and reliance on springs is good and bad to a degree. Nice to not have the maintenance of air springs, but they are also set to a fixed functional range. Even if they add some level of preload adjustment, there are riders and preferences that may lead to needs for different springs to be swapped in/out. The FB page has a user video of some riding that is far from ideal, with LOTS of unwanted motion at ranges far wider than what I think is productive. The company acknowledged this instance and said stronger springs would be appropriate. So it shows there is a limit to the functional range of the unit and design decisions.
Otherwise, I welcome the thinking and concepts behind it. But I don’t think it is the peak of trainer motion at this time.
I gave myself a few days to think about it and pulled the trigger on the Rockr Axis. Will post impressions once it arrives (fingers crossed that I get it earlier than the advertised 60-90 days).
Very cool! Cant wait for you to get it and give somw feedback.
The decision was made after riding outside for the first time since winter began and realizing how much I miss that motion
After a bit of advice. I have a Stages SB20 which is great but has zero flex. I’ve never ridden with a rocker plate but think one for the Stages will help on longer rides. There’s no way I’m making my own as I’m completely DIY incompetent. Options for a rocker to fit the Stages bike are minimal but Turborocks do one with just normal side to side but also one with both side to side and forward & back. Is the latter option worth an additional £130 (£430 vs £300). What are your thoughts?
Fore-aft is such a tough question. Some love it, some hate it.
I wrote a bit of a standard guide in my doc.
Pros:
Cons:
See if that helps at all, and I can try to add more info as needed.
I just received my Pedivella and should have it setup for a 3 hour endurance ride this weekend. I will post a first ride review. But I can say that customer service so far has been amazing. I had Jim tweak the length slightly to exactly what I wanted for my SB20, and he did that without any fuss. Whenever I’ve emailed him throughout the process, he’s responded back in a timely manner, especially given the time zone differences to San Francisco.
Really interested in your ride review of this when you can. Been looking at rocker plates myself for my SB20 and being in the UK, Pedivella looks a good (and surprisingly cheap) option compared to others out there. Please do report back 
Agreed. Even with shipping to the US, this was a surprisingly inexpensive ~$450 USD option. And I really like that I could get it to my exact specs for length & width. Almost all of the rockr plates out there are designed for separate trainer + bike setups, and not smart bikes. And the more smart bike friendly options are designed for the Kickr / Tacx smart bike footprints.
Review should be up by end of day Sunday California time. So plan on Monday morning reading your time 
So I hit a slight glitch with testing out the Pedivella: I had it all setup and leveled, but when I got on my SB20, it hard leaned to its full range of motion and I couldn’t straighten it out when on it. I need to add more air (probably a lot) to the balls, and I don’t have the correct pump needle 
So off to Amazon to rectify that problem.
Other than the balls needing air and some dust, the Pedivella arrived in great shape. So my review will probably happen either Friday or this coming weekend. Stay tuned.
Ahh no. I had my coffee ready for my morning read of the review 
looking forward to it nonetheless when you get it all setup.
Some photos would be good! 
So I got a pump today (yay Amazon) that I can use to blow up the damping bladders to stiffen them up. Do you have an estimate of what pressure range these should be in? When I got it, they were down around 2psi, which wasn’t surprising given this was shipped. I pumped them up to 8psi, but don’t have a clue on what range I “should” start in. Thoughts?
Picture before I broke it down:
Pressure is a function of the ball size, lateral placement from the center axis and system weight (rider, bike, trainer).
Thanks. I figured all of those factors would impact pressure, but wanted to get a feel if people are using single or double digit pressure. I’m guessing this will end up on the higher end just given the SB20’s weight, but now that I have a pump, we shall see.
If you want max support with minimal pressure, moving the balls out to the sides is the easy thing to do. You can easily relocate them to the pure front or rear opening between the decks. Install the balls wider than the precut holes, and inflate as desired. It’s just tweaking leverage and the balls will be fine at the outer ends vs in the middle. The deck and trainer are stiff enough to transfer the loads as needed. So you have lots of options to try.
