Could you guys help me with a project I am exploring. I would like to make a CAD model of a composite panel, monocoque chassis based upon the GTM. The same type of chassis that the DP1 http://www.dpcars.net/dp1v8/da.htm and Mosler MT900 http://www.mosler.co.uk/mosler/technology_road_bodywork_chassis.asp use.
I am toying with the idea as I have access on an hourly bassis to a panel cutting CNC. I use it frequently in complex case work in the custom homes I build. A blind dado’d cabinet case utilizes the exact same construction techniques as these aforementioned car chassis. My case work is done to a precision of +/- .003 and since these parts are self indexing and self squaring I can have $10/hr untrained labor assemble the most complex and demanding woodwork. In the case of the car chassis the tennons and mortises are epoxied together and heat cured.
The fact is I could likely produce a monocoques that is far more precise and more rigid then a tube frame for a more reasonable sum then one might think. I am under no illusion that there is any great demand for a new chassis for the GTM but it offers me a design starting point from which to explore with a ¼ scale model made of rigid foam panels as an analogue to the full scale thing. It may be that I can provide chassis for other low volume or start up kit makers. I am 90% sure I could produce a chassis for less then an unskilled person could hire out to have a tube frame built.
So if any one with a car would be so kind and indulge me with some dimensions.
Primarily I need the internal cage (as measured from the outside tube to outside tube). Rake of the windshield. Then I would need the vette fuel takes or I can just invent one. Then I can model the suspension. I can model one of my own or use the GTMs. From there I can work out rear sub frame and front box.
I realize that it may be a bit of work and not really practical for anyone here but any help would be appreciated.
As an example this is one I put together as a learning exercise to see what dimensions I really need. This is not based on anything just pulled some dimensions out of my *** and it is by no means complete just a sketch and I have not modeled the roll bars that span from the rear upper deck to the front upper deck. That provides the final bit of rigidity and makes it essentially a closed box made of I beams and closed boxes.
I am toying with the idea as I have access on an hourly bassis to a panel cutting CNC. I use it frequently in complex case work in the custom homes I build. A blind dado’d cabinet case utilizes the exact same construction techniques as these aforementioned car chassis. My case work is done to a precision of +/- .003 and since these parts are self indexing and self squaring I can have $10/hr untrained labor assemble the most complex and demanding woodwork. In the case of the car chassis the tennons and mortises are epoxied together and heat cured.
The fact is I could likely produce a monocoques that is far more precise and more rigid then a tube frame for a more reasonable sum then one might think. I am under no illusion that there is any great demand for a new chassis for the GTM but it offers me a design starting point from which to explore with a ¼ scale model made of rigid foam panels as an analogue to the full scale thing. It may be that I can provide chassis for other low volume or start up kit makers. I am 90% sure I could produce a chassis for less then an unskilled person could hire out to have a tube frame built.
So if any one with a car would be so kind and indulge me with some dimensions.
Primarily I need the internal cage (as measured from the outside tube to outside tube). Rake of the windshield. Then I would need the vette fuel takes or I can just invent one. Then I can model the suspension. I can model one of my own or use the GTMs. From there I can work out rear sub frame and front box.
I realize that it may be a bit of work and not really practical for anyone here but any help would be appreciated.
As an example this is one I put together as a learning exercise to see what dimensions I really need. This is not based on anything just pulled some dimensions out of my *** and it is by no means complete just a sketch and I have not modeled the roll bars that span from the rear upper deck to the front upper deck. That provides the final bit of rigidity and makes it essentially a closed box made of I beams and closed boxes.