| Author | Message | ||
     Reepicheep |
Saw this on facebook this morning... Fernando Zarattini's Photos - Wall Photos http://www.facebook.com/home.php?#!/photo.php?pid=4883938&fbid=435849844569&id=73822 4569&ref=nf  What the heck? Great idea, but it seems like it would have to be scaled up to handle the heat from stopping a car! Unless they are water cooled or something  | ||
| Iman501 |
i saw that to, pretty interesting | ||
| Iman501 |
notice the model name on the side of the car? haha | ||
| Microchop |
Sure looks nice!. There is a 32 highboy around with ZTLs as well. | ||
| Firebolt020283 |
neat concept but I wonder how well it works... | ||
| Buelet |
Pretty cool!! As far as being scaled up goes, I'd imagine that this x4 on a (guessing) 2500lb car should do the trick... | ||
| Barker |
Peugeot EX1  | ||
| Firstbuell |
youse guys got eyes like a hawk !! | ||
| Blake |
Car wheels need to carry a significant lateral load though, so I wonder if there is the same benefit to unsprung mass? | ||
| Firebolt020283 |
ok so we know it is fast but how well does it stop? | ||
| Reepicheep |
Another thread about it in the 1125 board... perhaps they get away with the smaller rotors because the system uses regenerative braking. Or just because it is a concept car on a track doing speed tests, and doesn't need to actually stop quickly. | ||
| Anonymous |
Still no torsional load in a car as on a bike, so a guaranteed improvement in unsprung weight if the wheels are designed appropriately. But of course it doesn't work; it must not actually need to stop quickly. Like Geoff in AMA Superbike; just a concept... | ||
| Reepicheep |
I'm a fan of ZTL's both on the track and on the street. My concern with the setup on this car was a matter of the mass of that specific rotor for that application. I think the ZTL setup would be superior to the conventional setup, but those look like stock Erik Buell Racing motorcycle rotors and calipers. Maybe they are one off 15mm thick rotors... I'd think supercar rotors and calipers would need to be scaled up if they were going to last. Hmm. And if it is some kind of axle driven regenerative braking, then it *would* need torsional strength in the wheel, so that would loose some opportunity to lighten them. Maybe ZTL brakes on the front, and regenerative brakes on the back. I bet that sucker eats brake pads fast! (Message edited by reepicheep on September 22, 2010) (Message edited by reepicheep on September 22, 2010) | ||
| Buellkowski |
Imagining vented ZTL rotors...  | ||
| Firebolt020283 |
wouldn't the mounting tabs be on the outside for ztl not inside like that rotor you have buellkowski? | ||
| Sifo |
He said imagine.  | ||
| Buellkowski |
Thanks, Sifo. | ||
| New12r |
Until we know how much it weighs, and if they are on all four corners it would be fine IMO. | ||
| Natexlh1000 |
The only experience I have with Peugeot cars is a childhood friend's mom had a diesel station wagon. Every cold morning, when it started up, it sounded like it was going to blow up! Seemed to run fine. Mechanic said "they all make that much noise when cold" Engine lunched at under 70,000 miles If I were dropping money on a toy car, I would stick to corvette or viper. | ||
| Sifo |
I had a cousin that was an engineer at Ford during the muscle car era. There was a lot of stuff that was cobbled together very poorly on concept cars back then. Then they took them out on Woodward Ave. on Friday night! ZTL, even with stock Buell parts is no big deal for a concept car. | ||
| Metra6924 |
If the wheels are driven, then you will need torsional strength to transfer power from the axles to the rim. Regenerative braking can be powerful, providing almost as much braking power as the electric motor provides motive power. Railroad locomotives use this. They have enough tractive effort to pull a train up a mountain, and with regenerative brakes, enough braking effort with the traction motors alone to control speed going down a mountain. The traction motors become generators and create torsional resistance or braking power. They are not as fast acting as friction brakes, and lose effectiveness at lower speeds. In short, they work under the right circumstances. I imagine the car uses "blended" braking - a combination of regenerative and friction at higher speeds, with friction taking over at lower speeds. | ||
| Xb1125r |
I htink I have seen other pictures somewhere of this concept and I htink the rear wheels are controlled by a belt, like the motorcycle. | ||
| Ourdee |
My favorite brake system uses magnets instead of pads and an aluminum wheel in place of a rotor. Magnets do not come into contact with the wheel. | ||
| Natexlh1000 |
Ahh eddy current braking! The faster you go, the more it works. | ||
| Ourdee |
Used on vehicles that travel 600+ Here is a pic I found of it.  | ||
| Mr_grumpy |
Peugeot/Citroen have been making some outstanding concept vehicles over the last few years. Only problem I can see on a car is, when you get a puncture you'll need recovery to a workshop just to change the wheel. | ||
| Reepicheep |
I suspect you could use an allen head socket wrench with an extension, and can just remove the caliper bolts through the wheel, then drop or pivot the caliper. Not that much worse then a normal car setup... | ||
| Swampy |
Yeah, but my car wheel design has a wheel splined to a hub that is permanently mounted to the spindle with the rotor attached to the hub. @registered 2010 latimer | ||
| Mr_grumpy |
Alternatively, the disc is mounted the inside of a hub/carrier assembly & you just have changeable rims with no centres just lugs mounted on the inner rim surface. (quick, where's the nearest patent office) |
