06/25/09 While we’re working on the chassis and suspension, the first real dp4 body is now out of the mold at Contactscale.

06/24/09 We are now building the chassis. Suspension arms are first because the fixtures are already done and it’s an easy part on which to sort out some processes and test the tools.

04/17/09 Among all the other deliveries today (see other pages), Dan from Contactscale drove up from the Bay Area to visit and brought a test body for the dp4.

06/14/09 Some of the preliminary CFD results are in, thanks to Richard at AlignedCAE, so I thought I’d post some initial observations.

06/14/09 Some of the preliminary CFD results are in, thanks to Richard at AlignedCAE, so I thought I’d post some initial observations.

05/10/09 One benefit of countless iterations of chassis and underfloor is that I’ve managed to find an extra 3″ of legroom (no small feat in a car with a 68.5″ wheelbase!) so I was able to lower the driving position and get the driver’s shoulders below the bodywork.

05/10/09 One benefit of countless iterations of chassis and underfloor is that I’ve managed to find an extra 3″ of legroom (no small feat in a car with a 68.5″ wheelbase!) so I was able to lower the driving position and get the driver’s shoulders below the bodywork.

04/29/09 Work is moving full speed ahead on the dp4. I’ve decided to go with a tube frame and molded composite underbody for the first release. This decision is driven by several factors – time to market, cost and SCCA homologation requirements to allow the car to race in DSR class (in RWD form only [...]

04/18/09 Today being a Saturday and a nice day (calling for an Atom run of course) we only did a bit of work. Trimmed the test bodyshell and plopped it on top of the wheels to see what it would look like as a complete car (I still have a picture on my wall from [...]

04/18/09 Today being a Saturday and a nice day (calling for an Atom run of course) we only did a bit of work.

04/13/09 Work continues full speed at Contactscale and as these pictures show, the mold is now complete and ready for the first body to be made.

02/01/09 Got some additional pictures of the plug being prepped. It’s pretty hard to take pictures of a large white object in bright sunlight so these are a bit over-exposed, but they give an idea of what this device will look like in real life.

01/13/09 Bunch of progress on all fronts (see the other pages for more). On the dp4 end of things, the plug is coming along nicely. That CNC machine is pretty damned cool…

01/03/09 Just finished a short trip to San Francisco. A bit south of the city, in San Jose, is where the dp4 plug and tooling are being made by Contactscale.

12/16/08 Did a few more renderings, with the final version of the bodywork…

12/13/08 The diffs are here. These are similar to the ones in the dp1 prototype and also come from TRE. What I’m buying is just the cores which is the ‘guts’ of the diff – custom aluminum end-bells will be machined to complete the assembly.

12/09/08 Well, it’s about time this little device got a page of its own. Conceptually the design has been around for a couple of years, but only in my head.