Butch "Pappy" Dunaway's brother Steve has been playing around with a 3D printer and has designed a cute litle F1 car that's so small, you might think it is 1/32 scale, but it's not. It's actually 1/24 scale, with a 4-inch wheelbase but only a 3-inch track width.
It's an interesting amalgam of mostly 1/32 parts that uses a fairly scale 1/24 F1 body from the '65-66 era, back when F1 cars looks liked slightly fat cigars with wheels.
The motor pod comes from some brand of 1/32 cars, but Butch didn't know which one, perhaps Slot.it or Racers Sideways. The black portion of the chassis is what Steve designed and printed. The motor pod is just attached to the chassis base with screws and that takes care of everything except the front axle uprights, the guide tongue, and the simple pin tube body mounts (just brass tubes with plastic retainers on the outside holding them in).
You'll note that the front axle is height-adjustable with upper and lower set screws in each upright, a feature Butch tells me that is seen on several of the plastic-chassis 1/32 cars. And of course, a 1/32 guide is used, a Slot.it wood guide.
The bodies are produced in the UK by John "Howmet TX" Dillworth and were orginally imported by Noose for a class of Retro East Jail Door F1 cars based on the '66 Rod & Custom GP series (which RE doesn't really race any more). And, yes, they're rather tiny but the real cars were tiny. Note the molded-in transmission at the rear along with the nicely-detailed stacks and pipes; most all of the bodies made for the class were similarly equipped.
Noose has a bunch of these bodies on hand and it's a pretty good list. This car is the '65 Ferrari 1512, but also available are a '66 Eagle Weslake, '65 Lotus 33, '66 Brabham-Repco, '66 BRM H16, a McLaren M2, a Serrissima, a Honda, and the skinny '66 BRM.
The car shown weighs 53-54 grams and Butch says it runs really great on the nice wood 87 foot long, 4-inch lane spacing track he built that lives in his barn.
Now install a driver/interior, Butch, and it will look really sweet.