Well just doing this because I believe the spring can be done a similar way to the ridges in the sparkplug. (Helix) For now just the base model of one of the wood pieces. Needs beveling or holding edges for sub-D modeling. UV's and the spring part done, and All UV'ed by tomorrow, setup for Renderman with a Bump Map. A lot left to do. Handy to have the actual reference object.
The trick here was to start with cylinders and delete the sides. I first tried the Cirularize tool on the front to make it more round, however, the second rebuild yielded better results.