Torsional Rigidity
Discussion
Thanks for the input.
I have enquired with the factory, but they couldn't help.
I have visited the V12 installation site (very nice), but I wasn't conviced of the accuracy of the measurements taken ie was the test bed benchmarked against a known chassis to guage accuracy.
I did find the relatively minor modifications interesting and will probably employ some of them in the build depending on the outcome of the test.
A test cost around $1000AUD, so I don't want to fail too often...
I will post eventual results for future reference.
Cheers
Adam
I have enquired with the factory, but they couldn't help.
I have visited the V12 installation site (very nice), but I wasn't conviced of the accuracy of the measurements taken ie was the test bed benchmarked against a known chassis to guage accuracy.
I did find the relatively minor modifications interesting and will probably employ some of them in the build depending on the outcome of the test.
A test cost around $1000AUD, so I don't want to fail too often...
I will post eventual results for future reference.
Cheers
Adam
I have heard good things about this group and they are local to you,
http://www.sportscarbuilderswa.org/
Ryan
[/quote]
Thanks for your info Ryan, the link you supplied seems to specislize in Clubmans, but I know of a number of local clubs that are into Cobra replicas etc, perhaps both
I do not intend to stray far from the tried and tested product from the factory, especially on my first build project.
I often read the posts here and I'm in awe of the ability and knowledge of some of the builders. Guys like Jay, Clive, Wayne and others are truly exceptional engineers.
I will probably use a few of Jay's ideas combined with advice from the local knowledge pool before she goes on a test bed.
In my humble opinion, I would have thought the factory would embrace the relatively minor alterations as described by Jay to improve the chassis stiffness, perhaps even take them further and thus improve the handling ability of the package.
It should be noted here that I have no personal experience in this area whatsoever !!
Cheers
Adam
http://www.sportscarbuilderswa.org/
Ryan
[/quote]
Thanks for your info Ryan, the link you supplied seems to specislize in Clubmans, but I know of a number of local clubs that are into Cobra replicas etc, perhaps both
I do not intend to stray far from the tried and tested product from the factory, especially on my first build project.
I often read the posts here and I'm in awe of the ability and knowledge of some of the builders. Guys like Jay, Clive, Wayne and others are truly exceptional engineers.
I will probably use a few of Jay's ideas combined with advice from the local knowledge pool before she goes on a test bed.
In my humble opinion, I would have thought the factory would embrace the relatively minor alterations as described by Jay to improve the chassis stiffness, perhaps even take them further and thus improve the handling ability of the package.
It should be noted here that I have no personal experience in this area whatsoever !!
Cheers
Adam
Hi all,
Coincidentally I have just finished having the test completed on my chassis.
On our test bed, the factory supplied chassis came in just under 4200Nm (4180 to be exact)
We fabricated a simple cross brace to the engine bay and this pushed it up to 5800nm.
I haven't any photos of the brace as it was very rudimentary and temporary.
I will fabricate the final brace once the engine is installed to make sure I have clearances correct.
In addition to the engine bay brace I have inserted bushes into the diaphragm second from the rear of the chassis. These will allow for removable braces to be bolted in and thus triangulate that section of the chassis. Even though we could pass the test easily, we noticed some distortion in this area.
In a nutshell, it is easy to get the torsional rigidity beyond 6000Nm
Although VSB14LT (the regulations that detail torsional rigidity in Australia) requires 4oooNm and doesn't mention engine capacity etc. WA, QLD and Vic have all agreed to 6000Nm for any vehicle fitted with an engine greater than 4 cyl. This supplement to regs is enforced in these 3 states, I believe NSW is the same, but I can't confirm.
There are moves underway to have this lifted to 8000Nm in future (when ? who knows...)
I will upload a photo of the bushes once I get back to the workshop.
Alan May (Ultima in NSW) and I have agreed to share costs involved in the testing procedures etc, if you are interested in joining our little co-op, just let me know
Cheer
Adam
Aluminium panels are bonded and riveted in place. Steering, suspension and brakes are on. Substituted a rigid brace for dampeners. The whole thing is held down by the hubs and pressure applied to one corner. We had 6 dial guages along the length of the chassis on each side and measured the "flex" as pressure was applied.
The tester felt the fitment of the cockpit will add a little once in place. Engine/trans will make no difference due to rubber mounts.
I'm toying with the idea of doing all of Jay's suggested mods, just for the exercise.
I figure the stiffer the chassis the better....
Cheers
Adam
The tester felt the fitment of the cockpit will add a little once in place. Engine/trans will make no difference due to rubber mounts.
I'm toying with the idea of doing all of Jay's suggested mods, just for the exercise.
I figure the stiffer the chassis the better....
Cheers
Adam
Gassing Station | Ultima | Top of Page | What's New | My Stuff