Quote:
Originally Posted by mt2u77
Filling it with concrete and rebar seems like it would be difficult to balance-- could cause vibration/shaking issues. Plus, it's relatively permanent and difficult to try. I don't know what the inside of an eMotion roller looks like, but it seems if the bearings are sealed off you could just fill it with sand to try it out. If it doesn't work, clean it out and you're back to normal.
However, I think there's more to this than just adding inertia to your rollers, otherwise why would TruTrainer go to the trouble of adding an internal flywheel when they could have just made the roller heavier. The flywheel smooths out/dampens the loading and unloading, in addition to simply adding inertia.
I'd be more inclined to try to mod the Tru-trainer frame to add the eMotion features if you must.
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Ah ok I was assuming that the TruTRainer worked by getting a heavy cylinder up to speed and storing the energy in that for coasting but I think you are suggesting that there is more to it then that.
Good idea on the sand.