chassis the back office
chassis the back office
Author
Discussion

donkeasy

Original Poster:

636 posts

251 months

Sunday 18th January 2009
quotequote all
This is the way I am going with the back. Like it?

[URL=http://imageshack.us][/URL]
[URL=http://g.imageshack.us/img141/033pm7.jpg/1/][/URL]

[URL=http://imageshack.us][/URL]
[URL=http://g.imageshack.us/img142/029wv2.jpg/1/][/URL]

Edited by donkeasy on Sunday 18th January 13:51

h0b0

9,055 posts

225 months

Sunday 18th January 2009
quotequote all
This is the way I am going with the back. Like it?







I had a look and could only find 2 images. ThoughtI would clean it up a bit.






GTRCLIVE

4,193 posts

312 months

Sunday 18th January 2009
quotequote all
More triangulation the better, as long as the weight doesn't go up to much....
But on a foot note the Rear section of the chassis (The bar that your Gearbox mounts to) is quite superfluous. It does not add any Torsional rigidity to the chassis it is only there to help mount the gearbox and hang the rear clip. I would remove any of the major upper sections there and just triangulate the section in front to the lower Rails at the back and mount the box of the lower rails, or make the upper section just out of lighter tube..... But that's me...

Very Nice anyway, nice to see someone who's dared to make an Improvement Love that engine... Keep going bud....

donkeasy

Original Poster:

636 posts

251 months

Tuesday 20th January 2009
quotequote all
Thx for reply GTRclive

Tried thinner pipes, more and less pipes. In the end I measured 1.5 kilo extra in this configuration. And most of it goes in the joining of pipes and bolts. The thing is that when you see it in real, it looks the way I wanted it. Still looking if some thin pipes to the front can bring something. From the upper thin pipe from the cross, down to the rollbar point. I will make some pictures when ready

Joop



Edited by donkeasy on Tuesday 20th January 18:51

andygtt

8,345 posts

293 months

Wednesday 21st January 2009
quotequote all
Looks to me like there is some significant improvements in stiffness there, yes its a bit belt and braces but thats exactly what I did with mine and to hell with the 5kgs weight penalty, least I know it stiff as hell lol.
Love the engine installation as well, do you have more info on it as Id be very interested?

donkeasy

Original Poster:

636 posts

251 months

Wednesday 21st January 2009
quotequote all
This week the engine is out for little things.
Next week it is in again and I want to make the pipes more definit/Welding
Will make some more pictures then.
Now it's more into little detailed stuf like:
sensors fuel supply and water cooling.
Takes massive time but ............Love it!!!!!

PS: Andygtt it's audi 5.2/lambo V10. 600hp/600Nm
You can find most parts at www.vankronenburg.nl
In fact he has a spare one exactly like mine.





Edited by donkeasy on Wednesday 21st January 18:27

YIIHAA

338 posts

281 months

Wednesday 21st January 2009
quotequote all
Nice, but I think I'd go with welding rather than duct tape hehe

Scotty-Boy

532 posts

221 months

Wednesday 21st January 2009
quotequote all
Sheesh... surely everyone knows that you use 3M tape for structural chassis applications and not duct tape!

biggrin


Scotty-Boy

532 posts

221 months

Wednesday 21st January 2009
quotequote all
PS - Looking good Joop!

Hope to have some progress to report on my own Audi project in the next 6 weeks or so!

ezakimak

1,871 posts

265 months

Saturday 24th January 2009
quotequote all
the tape is a valid design tool and has its roots back in the Brabham F1 cars.

they did a similar thing with cotton string lines all over the chassie. when the chassi is flexed or in torsion you can see which tubes will be under the most stress due to how tight they are. a space frame chassie is normally engineered to have tubes in tension. if the string or tape goes losse and flopy it is probably not going to offer any practical sitffness to the car.

consider the tape a very quick and extreemly valuable FEA tool.

ryan

donkeasy

Original Poster:

636 posts

251 months

Saturday 24th January 2009
quotequote all
Start off, with 3mm thick paper and siccors.
then you make a proto of wood, tape and guts..
after that start with the endproduct...

Rapid Prototyping, FMEA, FEA, DFA, etc.

All in one night!!


Edited by donkeasy on Saturday 24th January 12:26

ezakimak

1,871 posts

265 months

Sunday 25th January 2009
quotequote all
joop, what g-box is that?

donkeasy

Original Poster:

636 posts

251 months

Monday 26th January 2009
quotequote all
ezakimak it's a ricaro sequential dogbox straith teeth 6 speed

Edited by donkeasy on Monday 26th January 22:19

donkeasy

Original Poster:

636 posts

251 months

Wednesday 4th February 2009
quotequote all
I did some work on the car

[URL=http://imageshack.us][/URL]



[URL=http://imageshack.us][/URL]
[URL=http://g.imageshack.us/img84/038dz3.jpg/1/][/URL]<a href="http://imageshack.us"><img

Edited by donkeasy on Wednesday 4th February 22:59

GTR-TT

442 posts

287 months

Thursday 5th February 2009
quotequote all
Interesting project. Hard to say from pictures but it sure look like that exhause will have clearance problems with the wheels where it exits thru the GRP. But you probably have checked that.

Can you please give med some more info about the transaxle. I contacted Rickarda several times a few years back but never got a reply from them... How much do they cost and what sort of power can they handle?


donkeasy

Original Poster:

636 posts

251 months

Sunday 8th February 2009
quotequote all
Sorry GTR-TT no more info,

I bought the gearbox second-hand from a raceteam.
They promissed me a drawing etc from the gearbox, still waiting.

Still have to find out how to change the oilpickup-point/pipe.


donkeasy

Original Poster:

636 posts

251 months

Tuesday 31st March 2009
quotequote all
TaTA...Bit further

URL=http://img407.imageshack.us/my.php?image=018p.jpg][/URL]

http://img407.imageshack.us/my.php?image=018p.jpg



Edited by donkeasy on Wednesday 2nd March 13:37