[UPDATE Oct 5, 2019] - We're zeroing in on a design concept we want. We want a logo icon above our existing Tower text logo and "electric bikes" text below that. Our final logo should be very similar to the uploaded file "TEB-logo-COMPLETE.png" and "tower-ebike-shirt.png". Don't change the "TOWER" text logo at all. That has to remain the same. You can select a font and sizing for the text under this that reads "electric bikes". And you can design the logo icon that sits above the "TOWER" text logo. I really like this double circle with the lightening strike inside it. I want this logo icon to be able to stand on it's own (so just a shirt with a big one of those on it, not text, that would be cool enough that someone would buy it). This icon logo should be iconic enough that it could a hood ornament on a car like the Mercedes logo. I'm not set on the red color, it can be any color but has to also work well as grayscale.
[original contest description]
Our Tower brand icon is a iconic lifeguard Tower (attached below). We love that and everything it exudes about the beach lifestyle, but on our eBike, we're really just using the "Tower" text logo, which we also love just as is, and we want to enjoy the brand equity we've created. For this logo project, we want to use our Tower text logo and add a distinctive electric element to distinguish this as Tower's electric bike logo.
We want this to be able to stand on it's own in grayscale. We're open to colors, but it has to look good in grayscale as well.
Most importantly, we don't want to change the font of our text logo at all. This should merely append to our existing logo, in the way the "Amazon basics" or AWS or "amazon Pay" or "Alexa" logos tend to append to the core Amazon logo.