Building an R1 Powered Seven


A few years ago I got it in my head to build a kit car. After months of searching I came across the Locost concept. In short, quite a few amateur hobbiests around the world have built their own Lotus 7 inspired cars from scratch, following plans available on a variety of Internet sites and published in a book by Ron Champion.

I started gathering parts and finally began building the chassis in July '05. In August '10 the car was titled, licensed and is now street legal. The following blog captures the progress of the build and driving experiences after completion.

Blog Posts

.

Sunday, March 11, 2007

Suspension Update

Front and rear suspensions are 95% complete. I was able to suspend the car on all four uprights and bounce up and down...felt pretty good. Front seems a little stiffer than the rear but it's hard to tell from just jumping up and down.














After assembling the front suspension I was a little worried that the outer steering tie rods would contact the lower a-arms. Today I checked clearance and...it looks like it will be close, but should be okay. Can't be 100% sure since the steering rack isn't mounted, but I'm feeling good enough to move on.










Things left to do on the suspension:

- Confirm wheel rates (probably will use sand bags for weight and measure deflection, Tyler need sand for his sandbox anyway...)
- Design and machine bellcranks - I made temporary ones out of flat stock to test the suspension but they probably wouldn't last more that a few good bumps.
- Cut steel sleeves for front suspension bushings. The ones that came with the polyurethane bushings aren't the best quality and vary in length...looks like they were cut with a chop saw.

Next stage: determine optimal steering rack length and mounting location, then figure out the best way to shorten the rack...

Slideshow of Build Progress