Earlier this year I was looking for an external timetable to get a project done. At the same time the Youtube channel Cars and Cameras announced a new crosskart build, from scratch. I threw together an engine model matching the one they'd announced and went from there.
The engine turned out not to have a clutch so they swapped over to a larger displacement Honda engine. My model is still the smaller one cause it's fine, differences are minor. The rest of the model has a couple similar differences where they went through several iterations quickly and I didn't happen to model the final one.
In the end this has an optimistic 70 horsepower matching a tuned CB750 bike that I could find a dyno sheet for. It had carburetor swap and some exhaust changes, this has similar modifications, so again, about as accurate as is reasonable. 70 horsepower is more than plenty for a vehicle that's 2.5 metres long and weighs just under 300kg empty.
Extract the 7zip file to your assettocorsa/content/cars folder to create assettocorsa/content/cars/honda_cb750_kart.
Stereo: model, textures, physics, "skins" (5 plain colours)
mclarenf1papa: physics advice
https://www.youtube.com/user/CarsandCameras actually building this monster
This kart has a lot of handling quirks due to the short wheelbase and spool rear end. Take it easy on the gas in 1st and 2nd gear and you know, don't expect it to drive like a sportscar. Thanks to its light weight it's still plenty fast (I'm told it could beat the E30 M3 at Laguna Seca and nearly keeps up with the modern Mustang) but its lack of aerodynamics limits its top speed to a still excessive 190km/h.
There are 2 LODs included because I'm moving on to other things, the main model has a relatively low material and object count so it should even out.
In order to facilitate some of the special features of the completely open rear end, this mod does not use suspension animations, instead sticking with direction nodes. This means the springs don't compress sensibly, but on the plus side, accurate camber is visible and the chain sprocket spins.
It was modeled with the bottom of the chassis flat which makes it look slightly odd in the Kunos showroom as the rear tires don't touch the ground. Just to do with how the suspension on the real one turned out.