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20 Dec 2013, 16:56 (Ref:3346365) | #3226 | ||
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21 Dec 2013, 11:58 (Ref:3346585) | #3227 | ||
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I reckon when this hits the track ..... it will hit it running and will challenge regurlarly on the podium .
Just from past experience . |
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21 Dec 2013, 12:30 (Ref:3346592) | #3228 | ||
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"Those were the days my friends. We thought they'd never end..." jimclark |
21 Dec 2013, 12:36 (Ref:3346594) | #3229 | ||
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"Those were the days my friends. We thought they'd never end..." jimclark |
21 Dec 2013, 13:56 (Ref:3346620) | #3230 | ||
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Updated: http://www.racecar-engineering.com/cars/porsche-919/
Quote:
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21 Dec 2013, 17:07 (Ref:3346684) | #3231 | ||
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Join Date: Nov 2012
Posts: 1,208
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Rallying Fulvias had a V4 engine. Is the only racing car with a V4 layout I know.
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21 Dec 2013, 21:02 (Ref:3346765) | #3232 | ||
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Join Date: Oct 2007
Posts: 1,586
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There was a rallying version of ZAZ 968 in the early 70's with air-cooled V4. Racing ZAZ had a 4-inline block from Lada.
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ACO-Ratel-Lotti group of "entertainpreneurs" soon will make you think that Reverse-Gear-Racing is the most professional series in the world. "Faccio il pane con la farina che ho". |
22 Dec 2013, 01:29 (Ref:3346818) | #3233 | ||
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Quote:
Here's to hoping you're right. |
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22 Dec 2013, 02:02 (Ref:3346823) | #3234 | ||
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Join Date: Mar 2012
Posts: 1,126
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Quote:
Interesting that Audi has now chosen the flywheel system while Porsche has chosen to go the battery route. Maybe, they learned some things in their previous testing? |
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22 Dec 2013, 06:22 (Ref:3346838) | #3235 | |
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The flywheel was with help from williams. Its not porsche's technology, and its not as powerful as batteries (but lighter) so I think its a smart move.
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22 Dec 2013, 06:27 (Ref:3346840) | #3236 | ||
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The flywheel was manufactured by Williams to Porsches specification. There is a lot more to a hybrid system than just the flywheel. The rest of the system is a Porsche system.
Also - Porsche have experience with the 918 hybrid. Having said all that, I still think 2014 is going to be a very steep hill to climb. |
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22 Dec 2013, 07:11 (Ref:3346844) | #3237 | ||
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But you have to rememeber Piëch is only allowing Audi vs. Porsche on the grounds that they showcase difierent tech solutions. Plus the PR pay masters would like the batterey link with the 918, so the designers might not have the free hands as you might think.
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22 Dec 2013, 07:59 (Ref:3346848) | #3238 | |
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The flywheel solution is at a disadvantage. Who it belongs to or used by isn't the point Im making. Just stating that Porsche moving on is a better move imo.
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22 Dec 2013, 19:46 (Ref:3347030) | #3239 | |
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What are the disadvantages? I can think of one in that batteries can be molded and built in shapes to fit more easily into available spaces. The speed of retrieval and delivery of juice seems to be in the flywheel's favor. The fire component seems to be in the flywheel's favor.
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22 Dec 2013, 19:47 (Ref:3347031) | #3240 | ||
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It's the weight and the capacity I think.
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22 Dec 2013, 20:57 (Ref:3347045) | #3241 | |
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Posts: 3,563
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A flywheel works best with as high a speed as possible and with a large a diameter. Weight is not a critical factor in its energy storage potential.
If you can get it running in near vaccum conditions then you reduce friction. The other factor is to make the electro mechanical conversion as efficient as possible. A flywheel for a given weight has probably got greater potential energy storage than a battery as you only need to be able to increase its speed but..... Its disadvantages are primarily size, shape and energy loss to friction. |
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22 Dec 2013, 21:14 (Ref:3347058) | #3242 | |
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The difference is well understood: battery has better energy density and flywheel has better power density (and hence faster charging/discharging).
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24 Dec 2013, 12:53 (Ref:3347585) | #3243 | |
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The LMP1 Regulations and Technology
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24 Dec 2013, 17:46 (Ref:3347635) | #3244 | ||
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That engineer has a strange accent ("kaann", "daann", "Systeem" sound strange). Where is he from?
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Nitropteron - Fly fast or get crushed! by NaBUrean Prodooktionz naburu38.itch.io |
24 Dec 2013, 18:33 (Ref:3347643) | #3245 | ||
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Ceterum censeo GTE-Am esse delendam. |
24 Dec 2013, 23:47 (Ref:3347703) | #3246 | ||
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According to Williams, the flywheel is of higher efficiency (90%), higher energy density, and better reliability. The one used on 911 GT3-R hybrid revs to 36,500 rpm, while the same system on Audi revs to 45,000rpm so there must be more potential. The only problem will be the adverse effect of a high speed rotary.(just as the helicopter I suppose).
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Eat, sleep, race, repeat. |
25 Dec 2013, 05:51 (Ref:3347723) | #3247 | |||
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Quote:
(Google netted nothing) |
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"Those were the days my friends. We thought they'd never end..." jimclark |
25 Dec 2013, 09:26 (Ref:3347732) | #3248 | ||
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Quote:
A simple example is to spin a bicycle wheel between your two hands (off bicycle) and turn to one side with it spinning. |
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25 Dec 2013, 09:36 (Ref:3347734) | #3249 | |
Rookie
Join Date: Feb 2006
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Would two wheels spinning opposite ways cancel each other out?
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25 Dec 2013, 10:44 (Ref:3347753) | #3250 | |
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Join Date: Mar 2004
Posts: 8,738
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In 2008 Bosch Motorsport presented a solution with four flywheels:
source: http://www.greencarcongress.com/2008...developin.html More info about the Bosch solution on http://www.racecar-engineering.com/a...ormula-1-kers/ The fact that the Williams Hybrid Power solution uses a single flywheel suggests that the gyroscopic effect is not noticeable. The weight of the flywheel is pretty low, but it spins very fast. |
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