Building a Dio Tipo/Alfa Romeo.
Already have the body along with the entire drive-train and suspension so this should be a "Simple" build.
I've been debating using the TR4 frame I have or building a new chassis.
The body was originally designed around the TR frame so the track and wheelbase are correct.
The simplest build in many ways but still a cart sprung - lever shock early 50's design at the rear.
I also have the Art Morrison custom space-frame drawings that were commissioned for it.
Intended for Mustang II front and four-link rear, I think it's pretty similar to their old Cobra chassis and it's been used for high HP engines.
The AM drawing uses surprisingly little triangulation but that is easily added.
I will be modifying the AM design anyway to use as many original Alfa components as possible.
Not quiet as light but much simpler to service and for others to follow the same path.
The major flaw of the AM drawings is that they have no call-out for tube thickness or cut length.
This will be about a 150 HP engine.
Round tube design.
Hoping to use ERW to keep cost down VS DOM.
1-5/8 OD main chassis rails, .065" or should they be a little heavier?
Could they be a little lighter?
Trying to build as light as is practical for a street/hill climb car.
Most of the chassis tubes are 1-1/2 OD, again, .065" or .049"?
Balance of tubes are 3/4" OD and are not really structural so much as providing support for the very light fiberglass body.
The 1-1/2 and 3/4" tubes will get a lot of bending, some of them into half-circles.
Will the heavier tube bend with less tendency to flatten?
Want to order steel ASAP.