And We’re Off!!

Our intrepid truck and trailer crew.


Zephyr is ready to ship after a year of hard work, and departed for Texas this afternoon! She will arrive at Circuit of the Americas in Texas on Sunday July 2nd. While Zephyr still needs a few final adjustments after her multi-day journey, we are confident she will be ready for Scrutineering on Monday.


The past few weeks have been a flurry of preparation and testing, and many teammates have been putting in long hours at our workshop at the Richmond Field Station. We had time to hold dynamics tests this week to gauge our preparedness for scrutineering, and took careful care to replicate conditions at the race.

Wetting down the pavement for Zephyr’s brake test


Testing Zephyr’s maneuverability. This is the only color we want to see on our Scrutineering sheets.


Finally, we would like to make a shout-out to everyone who worked so diligently on making Zephyr Rayce-ready this year! Thank you as well to all of our loyal sponsors: without your help none of this would be possible. We are excited to see the fruit of our labors at Formula Sun Grand Prix 2017, and hope to make this Zephyr’s best Rayce yet!


Thank You Mun Manufacturing!

We are excited to announce Mun Manufacturing Co.’s sponsorship for Tachyon! Mun Manufacturing is a machine shop in Oakland, California, and is run by dedicated owners Dennis and Jeanne Lee. They machined the tooling foam plug for our practice mold this summer, and we look forward to a very rewarding and productive partnership with Mun Manufacturing Co.

Practice mold plug, ready for trimming and sanding

Dennis Lee is also a Principal Lab Mechnician at UC Berkeley’s Mechanical Engineering Student Machine Shop, and is always ready to help us and other students with machining and advice. He has been essential for the success of many student projects and teams. We have benefited greatly from Mun and Dennis’s generosity, and can’t thank them enough for their help!

Mun Manufacturing Co.’s logo is proudly displayed our website, and will race with Tachyon in American Solar Challenge 2018, World Solar Challenge 2019, and beyond. We encourage you to contact them at for more information on their services.


Thank You DUNA-USA!

We are very happy to announce DUNA-USA Inc.’s sponsorship for Tachyon! DUNA-USA Inc. manufactures a large range of low and high density foams, as well as chemicals and equipment for utilizing these foams. They have sponsored CalSol with high-density tooling foam and specialty adhesives for joining the foam into larger blanks for milling, and we look forward to continuing our productive partnership through Tachyon and beyond.


DUNA-USA Inc.’s high-density tooling foam is dense enough to hold fine details when machined, and is also nonreactive with a wide range of primers and chemicals. These qualities are essential for making high-quality “positive” or “male” mold patterns, which can then be used to create “negative” or “female” molds for part fabrication.


Large pieces of high-density tooling foam can be very heavy, and a single piece of foam large enough for Tachyon’s molds would be prohibitively difficult to transport and store for long periods. We plan to use DUNA-USA Inc.’s specialty foam adhesive to join together pieces of tooling foam into the required shape and size for our machining blank. We had a chance to practice with their foam adhesive and were very happy with the result: the adhesive expands as it cures to fill any gaps or unevenness between the foam pieces. Not only does this result in a very strong bond, this will also allow us to create our mold patterns without having to fill-in the glue lines after machining.


Our positive patterns for Zephyr were machined from Styrofoam. While we were create successful molds from these plugs, the low density and chemical vulnerability of Styrofoam necessitated much additional sanding and extra protective layers. DUNA-USA Inc.’s generous sponsorship will help us avoid these issues for Tachyon and aid us in making our best molds yet!


DUNA-USA Inc.’s logo is proudly displayed our website, and will be carried on Tachyon as she races in American Solar Challenge 2018, World Solar Challenge 2019, and beyond. We encourage you to visit their website at for more information on their wide range of foams, chemicals, and equipment.


Keep posted for more blog posts and pictures as we begin our mold-making journey with the help of DUNA and other generous sponsors!