Ok you lost me there... Are you talking about building a custom car or manufacturing a line of cars lol

Apologies admittedly for a curve ball on that last post.

It's just a thoroughly ingrained habit with me to think about how to make the next 100,000 just much as making the next 1. It's my job in a very different field, actually. Please feel free to dismiss it as idle daydreaming!

Best,
MAP

Hi Folks,

I'm starting to suspect my post had the effect of halting further thread progress, and this absolutely wasn't my intention. I'll just add this point to my penultimate post and then invite everyone to carry on: as to steering neutrality, if an engine/tranny/suspension rear assembly can be made on a FWD line and per FWD methods, then with admittedly added cost, the steering function could be conserved. If so, then yaw dampening could be made constant irrespective of speed within reasonable limits, and it could be programmed to provide a direct dampening effect as well. The result would be highly predictable and stable handling with a tendency toward oversteer at low speeds, and understeer at high speeds. Maybe +/- 5 deg of rear-steer is all that's needed.

Again, please ignore and my apologies if this is unwanted input; I don't want to detract in the slightest from Mark's amazing work described in this thread.

Best,
MAP

Porsche is doing this already. Porsche credits the active rear steering in the 991 GT3 with ~ 15s improvement in 'Ring time. The development of the system though is quite pricey.... :G-Dub:

IMO GM is very good at finding simple, clever, low-cost solutions to complex problems. Best - MAP

At 130+ large, it ought to do more than that. You should be able to toss your W-2s in that sucker and come back the next morning and find a refund check, even if you didn't have one coming.

If you want 63% rear weight bias he could just buy my Lotus 2 11..... Just be real mindful that the weight wants to lead the car... i.e., don't do a big throttle lift IN a corner... LOL

Everything has a trade off.

Generally speaking, when the center of thrust is forward of the center of mass, we have dynamic stability under forward acceleration. Under braking, the reverse is true. The former correlates more closely to a rear-heavy design, and the latter front-heavy. If accelerating while cornering, it does get more complex as you say.

Thx,
MAP

PS: I do hope we hear from Mark again soon. Please feel free to ignore all my posts about a rear-engine design if I crossed into a corporate no-talk zone.

Hellfire in CARS Inc 2015 Calendar
 

Hellfire, as a work in progress, is featured in the 2015 CARS Inc. calendar for the month of February.

http://i1158.photobucket.com/albums/...V/DSC_3274.jpg

The conundrum we always face with these technical interchanges is that only discussions within a broad public-domain definition can be occur. As soon as we get into something that's truly technically intriguing, IP corporate concerns shut down any further discourse. (The dark side of engineering that they never told us about at MIT.)

If I'm right about this, then we won't be hearing back from Mark in this thread again. Of course, I hope I'm wrong about this.

Best,
MAP

Maybe this thread pretty quickly went in a massively-wayward and obscurely technical direction, hence the silence from Mark, since he's likely moved on to 1 or 2 other new main/side projects....

Just a thought.

MAP, you might start a new thread in an appropriate subforum for your discussion, see what develops.

If it feels like the tangents you present are worthy of in depth discussion yet detract from a thread... Or drive off the original poster then that is likely the case and worthy of reconsidering.

That doesn't necessarily mean they won't be welcome discussions in their own right.

Thanks,

Too bad I can't go back in time and un-do those posts because it was never my intention to derail this thread - in fact, quite the opposite - the intention was to help drive it forward. Apologies again to Mark and everyone for having inadvertently done so. In retrospect, in our company too, it's lockdown mode when someone outside ventures into IP...

However, maybe in some small way those posts will stimulate thought for progress.

Best,
MAP

MAP

A mid engine car would be faster. If I put my engine in a AWD mid engine car it would be faster. If I put my engine in a ZR-1 it would be faster. Just simple physics.

New or mid engine cars have better areo, CG, weight distribution.....

I'm not sure what question your asking.

Mark

Hi Mark,

Okay since where talking all this stuff that is way over my knowledge base. What are you thoughts on the new front wheel drive race car that just built and are taking to Le Mans.

http://www.autoblog.com/2015/02/02/n...-wec-official/

ps - Sorry for the Thread Hi-Jack

They did a good job the reading the rule book.

Mark, where did you hide the GPS antenna for the Dash2? Did you have any problems getting GPS lock with that location?

Thanks!

Mark,

I'm very relieved and pleased to see that I was in fact wrong. I wasn't really asking any question, but just suggesting, by highlighting the physics, that given all of the ambitious and impressive things you've already done with Camaros, that rather than switch to a platform better suited to mid-engine, you might in fact try the close-to-impossible and make a 1st-gen Camaro that's mid-engine.

Thanks,
MAP

I would not say that. impractical sure

Corvaro :secret:

I put it on the dash. Works great. It links up on key up in about 30 seconds.

Thanks!!

Pretty darn sweet
 

Carbon can be a pain to work with, but you guys make it look easy!

Mark I am working on my abs system using oem ZR1 carbon ceramics, factory calipers, master cylinder, booster etc. This is running on oem ZR1 skf hubs, oem knuckles, oem SLA suspension arms.

Having not done abs on any build I am still on the lower end of the learning curve. A question you may be able to help with.

Will the Bosch M4 system work with the zr1 oem active sensors in the hubs? Obviously the M4 is the way to go (but it is expensive for what ultimately is a street car)

I would still love to find a way to use the far cheaper oem zr1 brake controller and abs pump and trick :headscratch: the controller into thinking its standalone rather than looking for information coming from the zr1 BCM with all its active body control that is not applicable in this application.

Colin

Envy
 

That makes two of us!
I have owned my 1969 Camaro for 28 years now and although it is nice, I must say wow again and again to every build Mark does.
I could only dream of mine someday being even close to this. Mark I hope to meet you someday as I live only about 25 miles north of Royal Oak, MI.
Keep up the good work so we continue to have something to aspire to!

The stock ZR-1 active wheel speed sensors on the SKF brearing that you have will work with the Bosch M4 ABS system.

Not sure of a cheaper system other than the Conti system and it will work with the ZR-1 bearings also.

Mark

Thanks Mark https://lateral-g.net/forums/images/icons/icon14.gif that confirms what I thought. I will take a look at the Continental system implementation for another option. The cost of a standalone tweek-able abs system sure is a big hit to the wallet.

However with the efficiency of carbon ceramics the need for me to include an abs system (solely for vigorous track use) is far easier than justifying such a significant cost (on a build) just for my sedate road usage. :innocent:

Your knowledge, input and feedback is without a doubt some of the most respected and sort after on this planet for a very good reason. Its a pleasure to just watch, listen and learn.


Colin

Can you please tell me what you used to bond your side mirror aluminum base to the carbon fiber?
I've done a test using the loctite marine 2-part epoxy but it doesn't hold like I expected.
Thanks
Mike

You could use what is called B-1/2 in the aviation world, it will work.
http://www.aircraftspruce.com/catalo...lickkey=104482

I used 3M panel bond adhesive. I'll see if I have a part number.

Mark

3M 8115 is the number.

Don

Thank you all, ordered!

Loaded into the Detroit Autorama tonight.

Clean the tires.

Whistle whistle :whistling:

That is one fine looking ride. The color just makes that car. Not to mention everything else about it.

Also, I see Weld has his booth right behind it.

Sieg bring a tooth brush and help.......

I hate that car show crap.

Mark

The car looks great sitting there. Hell, I'd leave the tires dirty just for the fun of it.

Charlie, which do you like driving more, Hellfire or Mayhem? I'm assuming you've gotten a chance to drive Hellfire at this point anyway.

I think I have driven Hellfire a couple hundred feet at Optima to get fuel or tech and that is it. It's really slow.

hahahaha. Well, please do report when you finally get to drive it for real. I remember you commenting on just how much of a pleasure Mayhem is to drive. I'm sure Hellfire is too.