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xzzy posted:Nascar should decide with a coin toss whether to race clockwise or counterclockwise 5 minutes before the race starts. You'd love the Grand Am Rolex Sports Car Series. It's like looking at NASCAR if it were to evolve into actual road racing. Similar motors, similar chassis requirements.
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Jan 14, 2016 20:19
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| # ¿ Apr 29, 2024 14:59 |
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I know nothing about driving trucks. At what point does that become unacceptable? I mean it looks dangerous sure, but the only thing I can think of going wrong is pinching the trailer. Or maybe tipping over? That doesn't seem likely though.
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Jan 20, 2016 17:15
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A carbon fiber bed and 1800lb curb weight may not be entirely mutually exclusive. The guy was a bit vague on whether or not he took actual skyline panels or if he replicated them in the interview. Based on the build photos, it looks like they made nearly every panel from scratch. Content: Have the bestest little turbo  
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Jan 31, 2016 17:49
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Stealth promo. Nice. I followed it.
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Feb 20, 2016 01:26
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If it's a flop the owners will have the last laugh. *cough*XJ220*cough*
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Mar 21, 2016 16:01
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tyrannosaurus wrench Needs stock wheels for hilarious sleeper.
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Mar 31, 2016 01:11
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If we're having a livery slapfight.
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Apr 11, 2016 16:14
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I always liked the Canon livery as well
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Apr 11, 2016 16:49
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xzzy posted:Race cars are the only time you can do stupid poo poo with your paint and people think it's awesome. Eh, I think its probably okay if you are promoting your business. It's kinda close to race sponsor, right?
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Apr 11, 2016 22:07
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Fayez Butts posted:and so is BMW's They run this car at the Lime Rock Historics every year and it is by far the loudest car in it's group.
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Apr 12, 2016 00:55
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Wheels that are designed like that. Are they meant to actively pull air through them to cool brakes or what?
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Apr 19, 2016 18:43
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Friction is going to be near negligible due to low velocity and a relatively high mass/surface area ratio. You errors in timing and height displacement off the ground when it stops accelerating from the air bag will yield higher values.
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May 5, 2016 17:07
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I feel like that was a terrible packaging layout. But at the point you are spending that kind of money I'm sure the owner has a plan.
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May 12, 2016 18:38
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scuz posted:Sure, yeah, I read that, but was he a part-time petroleum engineer? Who the hell can work for a year or two out of 7 and have the money for road trips (regardless of camping each night) and track expenses? A staggering amount of debt can be held on credit cards. Pay if off slowly. Not a good financial plan, but one that would work in the timeframe we're talking. Just having a large savings to start with is a potential other option.
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May 17, 2016 16:27
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I heard it has so much torque the chassis would twist coming off the line.
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May 18, 2016 17:44
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It looks like someone dropped a body onto a snowcat and said, "There, it's a car now."
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May 18, 2016 23:46
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Needs more octopus beak.
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May 19, 2016 17:42
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I'll donate when I get home. Those guys deserve a beer or two.
um excuse me fucked around with this message at 17:16 on May 21, 2016 |
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May 21, 2016 13:25
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I'm digging the trucker style steering wheel.
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Jun 2, 2016 01:14
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Love the crimson haybaler, they didn't take many design liberties with the mean machine, though. The whole series is fantastic, though.
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Jun 13, 2016 15:01
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I know the real article is based from a Tatra 815 with a bunch of long nose stuff bolted on. Get a bunch of models on the same scale and cobble it together.
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Jun 13, 2016 18:04
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Cakefool posted:Am I confused or are you responding to InitialDaves post about driving a replica jaguar XJ220 by proposing he base it on the fury road war rig? I honestly have no idea what happened. Someone was talking about a model war rig somewhere in AI. Where am I? I'm scared.
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Jun 14, 2016 01:43
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Yep, that's it. Since we are on that topic:   https://www.facebook.com/divenine/photos_stream
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Jun 14, 2016 01:57
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How high off the ground do you think the back wheels of the bug would get in an emergency braking scenario?
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Jun 16, 2016 03:32
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Revisiting a video that I like to watch every now and then. It is by far my favorite "power is the solution" race car ever made. The Mannic Beattie powered by a 1.7L Cosworth tubrocharged with its own dedicated helicopter engine spooling the turbine making boost at 25psi. This produced around 400 horsepower at 7500rpm driving all four wheels. It has perfect weight distribution at an estimated curb weight of 650kg (1433lbs).  https://www.youtube.com/watch?v=11687nVdzdk&t=38s It's rather fast. https://www.youtube.com/watch?v=gFNnXOAAhWI I am convinced there is no better way to turbocharge any vehicle.
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Jul 21, 2016 03:46
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mekilljoydammit posted:That's what I mean, I thought it was just used as an air supply to the engine itself. Hard to say without going over the car though. If you can decipher those engine photos I posted, the answer is probably in there.
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Jul 22, 2016 02:27
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A few of my favorite shots from IMSA Weather Tech at Lime Rock. IMG_0364 by um excuse me, on Flickr IMG_0357 by um excuse me, on Flickr IMG_0271 by um excuse me, on Flickr IMG_0269 by um excuse me, on Flickr IMG_0273 by um excuse me, on Flickr 230A1267 by um excuse me, on Flickr
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Jul 28, 2016 00:35
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davebo posted:Thanks for posting those, I was driving home the whole time that was on then completely forgot to check the results until you posted that. Can't believe after the disappointment at Le Mans I missed the Corvettes winning 1-2. Was it an exciting race? Anything worth trying to track down or should I just be happy with the results? Suuuuper late on the reply. My bad. The race was very exciting. There were plenty of position changes and the corvette and GT teams stayed pretty tightly together, not staying much more than ~7 seconds apart the whole race. IIRC, it went in 3 main phases for a while. Corvette was in the lead in the beginning, then it was corvette, GT, corvette, GT for a while. Then Corvette, GT, GT, Corvette. Then GT, Corvette, GT Corvette. It all sort of fell apart for Ganassi racing at the end. It went back to corvette, GT, corvette, GT. Then Corvette, Corvette, GT, GT for the last dozen laps or so. But in case that's kinda hard to follow. IMSA put the whole race on youtube. https://www.youtube.com/watch?v=wiSD-fc-6n4
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Jul 30, 2016 05:53
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Somewhere half inch steel mounts to sheet metal a few mils thick on that.
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Sep 9, 2016 14:30
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Since when did aesthetics trump functionality in AI?
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Sep 30, 2016 16:44
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I think it would have been cool to built another outside the box N/A car instead of turbo the old one.
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Oct 12, 2016 23:29
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I'm digging that aesthetic.
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Nov 2, 2016 22:49
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Is there no application where a turbine would be useful for a road vehicle? A truck is the closest thing I can think of. Needs lots of torque, spends most of its time at one speed. In other news I found the guy on Facebook who made this thing: https://youtu.be/wQM_TyyRye4 You remember that thing. He said he still drives it for exhibition runs at drag strips. He also has a jet powered minibike and a pro mod dragster. His YouTube channel has been active all these years.
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Nov 10, 2016 14:44
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If the jet engine economy scales it would still be impossibly expensive to use a turbine. Shoving a power turbine into a truck would cost something like $400,000 and the maintenance for the life of the engine may be similar. The exotic metals needed to run jet turbines at efficient compressions make them very difficult to be economically feasible.
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Nov 10, 2016 16:08
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Roadkill just posted an article on Turbonique and it's crazy rocket driven differential and supercharger. http://www.roadkill.com/in-1960-you-could-buy-a-mail-order-1300hp-rocket-engine/ 
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Dec 9, 2016 14:18
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I'm doing a bit of feasibility study for a potential project. I got the largest turbo Precision Turbo and Engine makes on loan. Designed for engines up to 2400hp. It weighs 51 pounds without any internals.
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Dec 24, 2016 03:41
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Seat Safety Switch posted:Let's be honest with ourselves: at this point you no longer require the engine. This was by far the closest guess. It may become a build thread in SA one day. I just don't want to get hopes up by starting it now.
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Dec 24, 2016 04:06
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I have two criticisms about freevalve. The first is you only have one valve going to the turbo, this is going to be a huge flow restriction at high rpm and reduce overall output potential of the motor due to larger pumping losses. My second gripe is that all of these amazing figures he's claiming is almost certainly without the engine driving the air pump necessary to run these valves. Like traditional cam driven valves, a large portion of the engine's energy is required to run itself. It will require a significant amount more energy to run pneumatic valves because of the energy conversion from kinetic to pneumatic at the air pump, then again from pneumatic to kinetic at the valve. The conversion is less than 100% at both points due to the laws of thermodynamics and compounding to each other. He will have an exceedingly difficult time gaining enough efficiency to overcome these losses. That said I hope he can find a solution. I spent a lot of time researching camless engines years ago and gave up because it turned out to be a dead end on paper. The benefits are huge if the losses can be kept under control.
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Dec 26, 2016 17:24
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This isn't really the right thread to go into detail about it but a vacuum pump only has a dP of 14PSI, these valves likely run at hundreds of PSI at much higher flow rates.
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Dec 26, 2016 18:38
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| # ¿ Apr 29, 2024 14:59 |
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I wasn't aware there would be so much interest in the tech. I'll make an effortpost when I can get around to it. Basically the summary is that the only losses in a cam system are friction and noise. All three types (pneumatic, hydraulic, and electromagnetic) of camless system have conversion losses on top of friction and noise. There is a hydraulic valve holding mechanism that isn't very well explained in FreeValve which may recuperate losses/increase efficiency, but I have no way to be sure. Speaking of alternatively driven components:  This was an attempt at an all wheel drive hydraulically driven front Formula car in 1969. It never raced because it was too heavy to be competitive. um excuse me fucked around with this message at 22:52 on Dec 26, 2016 |
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Dec 26, 2016 22:44
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