Fascinating! Their rocket's trust-weight ratio (~73, according to Wiki) is WAY below the state of the art gas-generator cycle Merlin (~185), presumably because

Fascinating! Their rocket's trust-weight ratio (~73, according to Wiki) is WAY below the state of the art gas-generator cycle Merlin (~185), presumably because of the added weight of the motor and batteries required to operate an electric turbopump. It's always interesting to see folks look past a supposedly bad design and discover that its other benefits (in this case, cost and simplified design, apparently?) can still render it a viable option.