LucidreamNo, they do not spin long at all, less than a minute. I have these tops through Forever Spin's Kickstarter campaign. They stink. I never use them and have been trying to sell them, with no luck.
LucidreamI recorded spin times for my stainless steel ForeverSpin top and my stainless steel Vorso Mk1 top. After more than sixty spins on the Mk 1 and more than one hundred and sixty spins on the ForeverSpin, here are the results (time-format MM:SS):
| Top Material - Brand | Max Spin | Average Spin |
|-------------------------------+----------+--------------|
| Stainless Steel - ForeverSpin | 03:07 | 1:37 |
| Stainless Steel - Vorso Mk1 | 10:33 | 08:50 |
Hope that helps! I'll post a top level comment with more context, but I figured you were asking about times, so here you go!