Tudor (Ted) Miron
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| posted on 10/12/03 at 08:27 PM |
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Hugh,
I think you missunderstood me  I'm not going to copy your design in anyway  I feel smart enough  (also have very good consultants)
I'm targeting for no less than 20000lb/deg but unfortunately it's going to be more expencive using exotic (some years ago ) materials.
Also suspension geometry and overall packaging is going to be vary different - so no copys here. Uprights - I have my oun design - billet 7075T6 Alu
with magnesium as an option.
Is allways interesting when people saying that we would not give this information because of commercial reasons. As I pointed to know that someone
has effectively zero RC movement or 100000lb/deg chassis stiffness doesn't help you figure HOW. When people are hiding such information it could
lead potential clients to think that there's not much to say or worse they don't know it themself
I'm not offending here - take it with humor
Ted
[Edited on 10/12/03 by Tudor (Ted) Miron]
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tadltd
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| posted on 10/12/03 at 11:41 PM |
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The chassis was checked using FEA and gave a figure of 25,000 Nm per degree.
Pretty stiff.
Steve.
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TheGecko
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| posted on 11/12/03 at 12:09 AM |
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quote:
I know that the new generation of small hatchbacks utilise cable shift, though...
All (I think) FWD Corolla's use a cable shift as do a LOT of other FWD Japanese cars eg Honda, Nissan etc. Rod changes are a pain because they
require either very stiff engine mounts or some sort of rigid connection from the shift lever pivots to the transmission so that engine movement
doesn't result in 'unexpected' gear changes! Cable linkages are inherently more flexible (in all senses of the word ).
See this AUDI gearbox linkage at LamboLounge.com for some
nice shots of the gearbox end of such a linkage and Kurt B's build diary (towards the
bottom of the page, October or so) for the shift lever end. It's worth noting that the McLaren F1 used a cable shift. There's some nice
photos and drawings of it in Doug Nye's book about the car, "Driving Ambition".
I'm resuing a Corolla cable-shift in my mid-engine build, probably just with longer cables.
BTW - that (the Coram) is a VERY nice looking car
Dominic
[Edited on 11/12/2003 by TheGecko]
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greggors84
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| posted on 11/12/03 at 12:40 AM |
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Very nice car, saw it at Autosport last year but didnt really take much notice of it. Dont know why though, because now i want one! It will have to
wait till after the Indy though!
Looks brilliant in the pics, gorgeous lines, doesnt quite look real! What were the BBC filming for?
Any website or pricelists, i like to start planning/dreaming early!
Thanks
Chris
The Magnificent 7!
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Rorty
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| posted on 11/12/03 at 03:38 AM |
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Dominic, if you're interested, I've used the Corolla cable shifter many times, as it's the most user friendly one I've come
accross.
There are pics of one mounted in one of my Beetle chassis on my site.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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TheGecko
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| posted on 11/12/03 at 04:11 AM |
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Rorty,
I've looked at those mid-engined Beetle photos on your web site a number of times and never noticed the similarity of the shifter to the two
AE101 ones I have in the "parts pile" Mine are from JDM (Japanese Domestic Market) 20-valve Corolla's and seem to be a lot
better made than the Australian delivered Corollas. Lots more metal, lots less plastic basically.
As I said, I already have two shifters and two pairs of cables. Sometime over the XMas break I'll be mocking up my shifter position and seeing
how long the cables actually need to be. Then I'll decide whether I'll just hook two cables end to end (with a sort of Pitman arm
arrangement to keep it all aligned in push-pull) or get new cables made. They look to me like standard Morse-Teleflex type cables as used in boats
etc so getting custom lengths shouldn't be a big issue. May have to reuse the existing ends if they're not standard ones and probably
won't be cheap - time will tell.
What did you do for cables?
Dominic
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Tudor (Ted) Miron
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| posted on 11/12/03 at 08:39 AM |
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Hi Steve,
Good stiffness. 25000Nm/deg is about 5500lb/deg. Have you consedered to measure it phisicaly? What is the weight of chassis? If it's not a
secret.
Ted
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tadltd
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| posted on 11/12/03 at 11:27 AM |
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We haven't done a physical measurement on the chassis, but the FEA calcualtions were done using Ford Motor Co's supercomputer, so
I'm confident they're pretty accurate.
Last time we weighed a chassis it came in at 58kg's or so (all CDS tube + tig welding).
I'm sure our monocoque version will be a lot lighter, though.
Steve.
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cymtriks
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| posted on 11/12/03 at 02:04 PM |
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Stiffness???
Guys,
25000Nm = 18432ftlbs
This is very high for a steel spaceframe. Is the chassis reinforced with composites or honeycombe or something?
My own FEA on the lowcost produced a set of mods to take the chassis stiffness from the book 1200 to 1400 depending on the build to over 2700.
The Caterhamseven isn't much higher and the Ultima is around 3300.
Even my own work in progress designs don't go much over 5000. Neither do Those massive chassis under Cobras.
The Elise manages just over 7000.
Are you sure about that 25000Nm figure? If you are then we'd like to know how you got it.
Curious!
Regards
Chris
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Tudor (Ted) Miron
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| posted on 11/12/03 at 02:50 PM |
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Can't say enything about Steve's (Coram) numbers. In my case I'm designing an errr..... lets call it semymonocoque chassis. Tubular
space frame carbon fiber skinned (riveted and bonded) on both sides with 1" thick nomex honeycomb between. This way it's possible to have
a VERY stiff yet lightweight chassis.
I don't see why you need a supercomputer for FEA (if you not in a big rush ) All analyses here are made on 2.8 P4 with 1032Mb Ram. I have to
admit that CFD analisys of Dennis's car took about a week of machine time.
Ted
Hey can you help me figure out how got those figures of 25000Nm = 18000ftlbs - I'm kinda lost in those imperial units 
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tadltd
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| posted on 11/12/03 at 03:05 PM |
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When I was designing the LMP, I was working for Ford. I 'borrowed' their resources because at the time I didn't have a personal PC
(let alone the software) that was capable of doing the FEA.
I'm dead sure about the figure, but I'm not saying any more... 
Steve.
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Tudor (Ted) Miron
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| posted on 11/12/03 at 03:26 PM |
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Steve may I ask you about those gouges (dash in your photo archive) I could ask you by PM but I'm sure that a other guys could be interested as
well. Hugh said you stock them.
Thank you
Ted
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JoelP
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| posted on 11/12/03 at 05:08 PM |
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quote:
Originally posted by Tudor (Ted) Miron
Hey can you help me figure out how got those figures of 25000Nm = 18000ftlbs - I'm kinda lost in those imperial units
i can try...
25000 Nm is about 2500KgM, which is roughly 5500lbM, which is about 18150lbft, all of the top of my head so units are all rounded and
approximated...
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Rorty
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| posted on 12/12/03 at 04:46 AM |
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TheGecko:
quote:
What did you do for cables?
There are a few cable contacts on my Links page.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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Metal Hippy
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| posted on 12/12/03 at 05:03 AM |
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quote:
Originally posted by Tudor (Ted) Miron
Hi Steve,
Good stiffness.
Where's Alanb when you need an input of innuendo? 
Cock off or cock on. You choose.
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tadltd
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| posted on 12/12/03 at 09:56 AM |
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The gauges are digital display, available in red, green, and amber.
The speedo is fully calibratable and can also record 0-60 times, 1/4 mile times, and top speed. It also has an odometer.
The tacho can be supplied to work with bike engines (10,000 rpm+), and will also record highest RPM.
All ancillary gauges record highest and lowest values (except fuel gauge). A full range of these are available, including: oil pressure, oil temp,
coolant temp, fuel level, air/fuel ratio, boost pressure, etc.
I'll post some pic's under 'tadltd'...
Please U2U me for prices.
Steve.
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tadltd
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| posted on 12/12/03 at 10:09 AM |
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Forgot to say that when the gauges are switched off they go completely black.
They will also dim when the headlamps are switched on, and are extremely easy to wire up.
Steve.
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Alan B
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| posted on 12/12/03 at 02:08 PM |
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quote:
Originally posted by Metal Hippy
quote:
Originally posted by Tudor (Ted) Miron
Hi Steve,
Good stiffness.
Where's Alanb when you need an input of innuendo?
Ooops missed that one...but it's hard not to cock up now and then...
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Tudor (Ted) Miron
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| posted on 12/12/03 at 03:25 PM |
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thank you Steve - this sounds interesting.
Ted
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tadltd
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| posted on 18/4/04 at 01:33 AM |
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'Coram' LMP can now be found here:
www.turner-auto-design.com
That is all...!
Steve.
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Alan B
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| posted on 18/4/04 at 12:54 PM |
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Steve, thanks for the update..
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