Daniel Wood and David Martschinske created the Self-Balancing Unicycle (SBU) to bring innovative, eco-friendly transportation to the market. They pitched SBU on Shark Tank in 2012, where they secured a $300,000 deal for 33% equity with Kevin O’Leary and Robert Herjavec.
However, the deal ultimately fell through. While SBU gained initial popularity, the business ceased operations in 2015. Daniel Wood went on to work on groundbreaking products like the Hovertrax hoverboard and the Solowheel, later joining Future Motion, the creators of Onewheel.
Meanwhile, Martschinske shifted focus to developing advanced military-grade electronics. SBU’s Shark Tank journey remains a memorable highlight.
SBU Net Worth
| Net worth | $3 Million (Business Valuation) |
| Investors | Robert Herjavec and Kevin O’Leary |
| Founders | Daniel Wood and David Martschinske |
SBU Pitch on Shark Tank
| Company name | SBU |
| Product | Self-balancing unicycle |
| Episode | Season 04 Episode 07 |
| Founders | Daniel Wood and David Martschinske |
| Asked for | $300,000 for 10% equity |
| Final deal | $300,000 for 33% equity |
| Sharks | Robert Herjavec and Kevin O’Leary |
| Location | 1st Ave Camas, WA |
Don’t miss these products from Season 4
SBU Founders
SBU was founded by Daniel Wood and David Martschinske. The company launch date is unknown. Both founders are best friends.
They also love to invent tech-related stuff. SBU’s founders, Daniel Wood and David Martschinske net worth is unknown as of 2025.
Key accomplishments
| Year | Accomplishment |
| 2012 | SBU appeared on Shark Tank |
Conclusion
Some companies that appear on the show have not achieved great success, and the SBU was one of them. Sometimes businesses don’t succeed for many reasons.
Sometimes, the deal falls through after the founders say yes on camera. Or, as you’ll see, sometimes things happen to the founders themselves, and they choose to abandon the business. Anything is possible.
However, the SBU shutdown date is unknown. And the product is no longer available in the market.
