Tag Archives: astronaut

What Happened To Flipstik From Shark Tank Season 12?

Not solely did Akeem enter “Shark Tank” carrying a makeshift astronaut swimsuit, signifying his product’s origins, however he additionally introduced Flipstik to the Sharks with a rap. What caught the Sharks’ consideration was the product demo. Akeem used three of the dirtiest home items (hair, sand, and spaghetti) to soiled up his product and show it nonetheless labored as marketed. However, the sharks weren’t eager on his provide after listening to the gross sales numbers.

The Flipstik entrepreneur initially requested for $100,000 for a 20% stake in his enterprise. While the Sharks had been impressed by his revenue margins, manufacturing every unit for under 58 cents and promoting the product for $15, they had been much less impressed by him, who solely introduced in $115,000 after 30 months of gross sales. It did not encourage quite a lot of confidence. Akeem made some extent to tell them that 60% of his enterprise was brick-and-mortar retail. During the Covid-19 pandemic, that was troublesome for anybody.

Kevin O’Leary was greater than and wished to make a deal rapidly. He waved off Lori Greiner’s questions, as he wasn’t focused on any form of bidding struggle, and supplied the younger entrepreneur precisely what he initially requested. After Akeem entertained Lori’s questions, Kevin backed out of the deal. She supplied him $100,000 for a 25% stake within the enterprise. While Mark Cuban confirmed curiosity in making a deal, Akeem accepted Lori’s provide, believing she was the best companion due to her expertise.

Jet-Powered Go-Kart Racing Looks Like All Kinds of Sketchy Fun

Robert Maddox, also known as Rocketman, builds pulsejet engines and installs them in motorcycles and go-karts. In a thrilling video, he and a friend take two of these incredible machines for a high-speed ride across a dry lake bed.

Both vehicles are truly impressive. The blue machine resembles a motorcycle with four wheels, featuring a large exhaust chimney at the back. Meanwhile, the red kart is equipped with three stacked pulsejets, giving it a cartoonish appearance.

Motor1.com reached out to Maddox for more information about these builds. The blue vehicle is powered by a 250-pound-thrust pulsejet engine called Maddoxjets, which runs on gasoline. It has a reed valve that allows air into the combustion chamber but closes off during the explosion. According to Maddox, starting the valved engine requires a significant amount of air, and using a leaf blower is easier than compressed air.

The red kart, on the other hand, uses a valve-less design with no moving parts. It generates a total of 150 pounds of thrust from the three pipes. According to Maddox, if he made a single engine with the same thrust, it would be too large to fit on a kart.

This vehicle uses liquid propane to start and then runs on diesel. Maddox mentioned that he has developed his own fuel injection for the kart and believes it should be patented. He uses both diesel and propane because diesel provides more power, runs cooler, and is easier to refuel, allowing him to run for a longer time without having to fill the propane tank.

The video above demonstrates how Maddox constructs his pulsejet engines as he assembles a larger one for the red kart. He uses a waterjet cutter to create the components, rolls them into tubes, and welds everything together.

If you’re interested in the science behind pulsejets, you can check out a senior project by students from California Polytechnic State University. They designed a pulsejet with a dual intake and a single exhaust.