TF Race Car Build

[talkingcars]

Slightly but at a much bigger risk of bending one.

[flyingbanana]

Slightly but at a much bigger risk of bending one.

I was thinking of using cds, tube is stiffer than bar as the forces go around the outside of the tube.

[Rob Bell]

Does anyone know how VHS managed to get their TF down to 875kg?

http://www.vehiclehandlingsolutions.com ... y_cars.htm

No idea! They took a lot of weight out of the inside - but probably no more than we have done. To cut another 100kg is pretty remarkable. Next time I see Andy Kitson, I'll have to give him the full interrogation!

[flyingbanana]

I have sent VHS an email asking how they did it - not really expecting a reply though. Will be removing the door impact bars for a little weight loss.

[mgtfnut]

You could try the rear lower radius arms, the ones from the hub to the middle of the subframe, they are solid bar and weigh a lot.

[flyingbanana]

The only decent picture I've been able to find fm Donny

[Rob Bell]

Looks great!

[Rob Bell]

You could try the rear lower radius arms, the ones from the hub to the middle of the subframe, they are solid bar and weigh a lot.

Anyone make lightweight replacements?

[mgtfnut]

You could try the rear lower radius arms, the ones from the hub to the middle of the subframe, they are solid bar and weigh a lot.

Anyone make lightweight replacements?

Just weighed a rear lower radius arm - 1.05Kg each x2.

Male threads both ends and it wouldn't be difficult to transplant to a tube.

[Rob Bell]

What material? Not being an engineer, I wouldn't know what material to select for the purpose (or indeed the thickness of the tube).

I do know a man who would know though

[flyingbanana]

Well the tube would need to be the same ID as the OD of the threaded part 1.5 mm wall thickness should be fine. although you would need to machine shoulders on it so it can fit into the tube to make a stronger joint. It will be a weight saving but I doubt it would be worth the effort - the subframe is the way to go to lose weight.

[Rob Bell]

I agree with you regarding the subframes. I have an idea for making one up in tube after making jigs from good front and rear subframes... Not something I have ever attempted before though and would need to practice my welding rather more!!!

[flyingbanana]

These look interesting although for a mini.

http://www.superfastminis.com/ALL%20PRODUCTS.htm

[Rob Bell]

Quite pricy, but I guess you get what you pay for: they look nicely fabricated!

[flyingbanana]

Quite pricy, but I guess you get what you pay for: they look nicely fabricated!

Oh I wouldn't pay for one, but as an idea for building one.

[Rob Bell]

True! I really like the idea of building my own. Use a standard subframe to build a "negative jig" and then build to that, keeping the standard geometry (that is a class requirement). My trouble is that I wouldn't know how to specify the tube diameters/ thicknesses (not a structural engineer, dammit!)

[flyingbanana]

25mm od tube with no more than 2mm wall thickness, 1.5mm would probably be about right.

[Rob Bell]

CDS I presume?

[flyingbanana]

CDS I presume?

Nope, ERW is fine - thats what LoCaterFields are made with.

[Rob Bell]

Cool: would need to get the pipe bent: I'm thinking a single section of tube bent into a "U" to form most of the perimeter, and then build from there.