Prototype chassis bracing for DC5

[JDM_DC5R]

I call upon the ban hammer if they turn out to be CE28s. It's a big call to say no one else has done it unless you've checked every car in the world.

I got a company to cad design the hubs, brakes and wheels... Then sent the designs to be made...

LOL thats how I know.


I have someone starting the CAD design of the front brace in a week or two. Until then, let me know if there is interest in the JUN under-brace etc, becaust I'll be getting that made up first.

[Chi]

You might as well get them to CAD design a whole new car and get it made in Aluminium for better rgidity and weight.

[ChargeR]

I got a company to cad design the hubs, brakes and wheels... Then sent the designs to be made...

LOL thats how I know.


I have someone starting the CAD design of the front brace in a week or two. Until then, let me know if there is interest in the JUN under-brace etc, becaust I'll be getting that made up first.

This might be a stupid question but that JUN under brace fits right under where the stock fuel tank is. They obviously use a fuel cell, I assume you are making this brace so that it will clear the fuel tank?

Also what compelled you to get custom hubs made? What was wrong with the stock ones? Did you also have custom billet wheels made or something?

[endymiony2k]

can some people from mech eng background do a quick CAE analysis, lol. JDM_DC5R, what cad software do u use? May be we can take a look of the design together

[JDM_DC5R]

I dont use the CAD myself, I had an engineering firm do the hubs etc.

For the braces, my cousin is a CAD designer. I will measure everything up, then get him to put it into CAD format ready for machining.

The JUN under brace will be made to clear the stock fuel tank. I think it will make a very big difference, similar to the large difference the 6 point front under brace made.

I found that the steering and turn in were greatly improved.

For anyone still wondering if a stiffer chassis is worth it, just take off your front strut brace and go for a spirited drive to see the difference it makes.

[ChargeR]

I dont use the CAD myself, I had an engineering firm do the hubs etc.

For anyone still wondering if a stiffer chassis is worth it, just take off your front strut brace and go for a spirited drive to see the difference it makes.

I am still wondering what was wrong with the stock hubs? it is just a bit of metal with a spline and 5 holes, so where was the improvement to be had?

Also wouldn't it be better to go to the track and run with and without the brace and see which is faster? Empirical data is your friend.

[TAFKA TMB]

I am still wondering what was wrong with the stock hubs? it is just a bit of metal with a spline and 5 holes, so where was the improvement to be had?

If you can get anything in the driveline lighter for the same strength then it has a knock on affect for acceleration, etc. See Carroll Smith's books on this. Why people go for carbon fibre prop shafts, etc if they can.

Also wouldn't it be better to go to the track and run with and without the brace and see which is faster? Empirical data is your friend.

I was trying to think of a way that would measure torsional rigidity without actually bending a shell or getting metal to distort and couldn't think of anything. Anyone got any ideas?

If it was me I'd be talking to some of the guys that work (or lecturers who help) on the University single seater race series (RMIT?). They should know the strength vs weight for tubing, bracing, etc from doing the hard yards and be really, really anal about weight (and scorn bling). Near the end they should be experienced with solid works and can either help or point you in the right direction.

[hebe]

I got a CAD designer to design my car braces too...it was hectic...I got the braces all made in heart shapes...

[freakygeek]

And by the time you've done all this you have added 25-30kgs to the car and it still can't compete in Australian rally or circuit racing. Why not just build a cage and be done with it?

Quoted for TRUTH!

/thread

[kavehman]

I got a CAD designer to design my car braces too...it was hectic...I got the braces all made in heart shapes...

your such a romantic

[hebe]

your such a romantic

I know! I love my car so much...I had to express my love to it via some heart shape CAD designed braces!!

[JDM_DC5R]

[QUOTE=ChargeR;91675]I am still wondering what was wrong with the stock hubs? it is just a bit of metal with a spline and 5 holes, so where was the improvement to be had?


I cant say. But all I can say is that if you think about what you said above, you'll work it out.


And +1 for what TAFKA said.

[Tiu]

JDM_DC5R:

you finished making these prototype bracing yet? any photos to show?