Search found 54 matches

by qczhao
Thu Jun 13, 2013 2:42 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Great read, thanks. It's admittedly been close to 30 years since I studied physics (at Imperial College fwiw) and haven't worked in the field since. My interest (and subsequent approach) is more philosophical these days, as you may have noticed, and I have found this discussion both educational and...
by qczhao
Wed Jun 12, 2013 5:11 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Edit: just occurred to me now, rehashing the 'sail argument'. High pressure, low pressure etc, right? Okay, we all know the temperature rises (linear) as the pressure increases. But why, if not because of more molecules being packed into the same volume, thereby colliding with one another more freq...
by qczhao
Wed Jun 12, 2013 4:00 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Edit: just occurred to me now, rehashing the 'sail argument'. High pressure, low pressure etc, right? Okay, we all know the temperature rises (linear) as the pressure increases. But why, if not because of more molecules being packed into the same volume, thereby colliding with one another more freq...
by qczhao
Wed Jun 12, 2013 3:13 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Sure, level A physics assume zero friction and a vacuum. Only not to complicate matters, but the example you provided should be sufficient. If a ball bounces off a surface, we like to consider this collision without any 'loss' of energy. However, is it not the simplest truth to acknowledge without ...
by qczhao
Wed Jun 12, 2013 1:20 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Hi Nakojo, Let me try to expand on my points in response to yours. Hope it clears things up. Sorry I read your initial post again and I don't see where you have addressed gravitational pull? At any rate, I believe your other explanations are wrong as well. I'm addressing your points in line below. I...
by qczhao
Tue Jun 11, 2013 5:02 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Sorry I read your initial post again and I don't see where you have addressed gravitational pull? At any rate, I believe your other explanations are wrong as well. I'm addressing your points in line below. In a vacuum it's slightly different, but it's still all about friction. There can be no fricti...
by qczhao
Tue Jun 11, 2013 4:12 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Ah, wings don't bend? Again, there is no accelaration without friction. None. Sorry but this is incorrect. Just taking the solar system as an example, since we can consider space to have zero friction since it's a vacuum: the planets orbit the sun, orbital motion requires objects to be constantly a...
by qczhao
Sun Jun 09, 2013 4:32 pm
Forum: F1 & Motorsport Forum
Topic: Does watching motorsport make you a better driver?
Replies: 103
Views: 12761

Re: Does watching motorsport make you a better driver?

I think there's a couple different arguments at play here. 1. Watching motorsports makes you a better driver on the road. I would argue no. I think that motorsports fans may be in general better drivers than none motorsports fans (on the road), but only because we are interested in cars and driving ...
by qczhao
Tue May 28, 2013 4:34 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Actually, friction is quite well understood... A hook and eye does not work by friction. Interference fits would not work. Stickle-bricks don't work by friction (although I would suggest friction has a small part to play in keeping the blocks together so they don't just slide apart in the direction...
by qczhao
Mon May 27, 2013 2:51 pm
Forum: F1 & Motorsport Forum
Topic: Physics/Maths of F1 acceleration and speeds
Replies: 80
Views: 10814

Re: Physics/Maths of F1 acceleration and speeds

Because Torque and Power are related.

(Power = Torque x Engine RPM x unit conversion factor).

So once you get past 8000 RPM on that graph, the torque decreases faster than the RPM rises (to put it in simple terms) therefore the power decreases.
by qczhao
Mon May 27, 2013 2:33 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

I didn't intend this to go the 'rocket' way, but never mind. :] I've had a chance to read up some material. It's pretty intriguing and brought me to another question. Is friction the only source of adhesion? In an absolute friction-less scenario, there would ideally be no adhesion either. Or will t...
by qczhao
Mon May 27, 2013 2:22 pm
Forum: In-Depth Motorsport Forum
Topic: Is Motion possible without Friction?
Replies: 87
Views: 84866

Re: Is Motion possible without Friction?

Actually, friction is quite well understood... A hook and eye does not work by friction. Interference fits would not work. Stickle-bricks don't work by friction (although I would suggest friction has a small part to play in keeping the blocks together so they don't just slide apart in the direction ...
by qczhao
Sun Nov 04, 2012 11:18 pm
Forum: F1 & Motorsport Forum
Topic: Just leave me alone, i know what to do..
Replies: 83
Views: 15278

Re: Just leave me alone, i know what to do..

I love how people are sitting around accusing him of being rude.

I'm sure that when you're piloting an F1 car around trying to win a race, the last you need to concentrate on is making your communications fluffy.
by qczhao
Sun Nov 04, 2012 11:15 pm
Forum: F1 & Motorsport Forum
Topic: Good drive from KK today (6th).
Replies: 23
Views: 4036

Re: Good drive from KK today (6th).

if you look at sector times he was losing 0.4 tenths approx in S2 due to the downshift / KERS issue.

He did a fantastic job considering this.
by qczhao
Thu Oct 11, 2012 10:44 pm
Forum: In-Depth Motorsport Forum
Topic: Question on Aero and why cars are 'smooth'
Replies: 32
Views: 88133

Re: Question on Aero and why cars are 'smooth'

Hello.

I don't understand what you mean by aerospike.

You could indeed direct the exhaust forwards, but it wouldn't be of any benefit to the airflow.
by qczhao
Thu Oct 11, 2012 8:39 pm
Forum: In-Depth Motorsport Forum
Topic: Question on Aero and why cars are 'smooth'
Replies: 32
Views: 88133

Re: Question on Aero and why cars are 'smooth'

I would guess so! But really in the case of the human body I think it would make so little difference as the rest of us is so unaerodynamic that you wouldn't notice any change from having it to not :)
by qczhao
Sun Oct 07, 2012 12:39 pm
Forum: In-Depth Motorsport Forum
Topic: Question on Aero and why cars are 'smooth'
Replies: 32
Views: 88133

Re: Question on Aero and why cars are 'smooth'

Dimples DON'T create drag. If they did, golf balls would be smooth. They promote separation of the airflow and as I said, reduce parasitic drag. This is sometimes called "skin friction" drag. Basically, if the surface is very smooth, the airflow stays attached to it for too long and cause...
by qczhao
Sun Oct 07, 2012 8:57 am
Forum: F1 & Motorsport Forum
Topic: Kobayashi-San CAN!
Replies: 66
Views: 11864

Re: Kamui CAN!

Of course Kamui CAN! He's just been denied all year by wrong strategy and bad luck.
by qczhao
Sun Apr 15, 2012 9:33 pm
Forum: F1 & Motorsport Forum
Topic: McLaren Pit Crew
Replies: 19
Views: 4415

Re: McLaren Pit Crew

McLaren clearly haven't done that and it has been blunders from the pit crew as well as the pit wall that have haunted them. Maybe I've missed it but do we actually know if it was a pit crew blunder or equipment failure yet? I think it was equipment failure - the wheel gun wasn't torqueing up the n...
by qczhao
Sun Apr 15, 2012 12:40 pm
Forum: F1 & Motorsport Forum
Topic: Kobayashi for the win
Replies: 64
Views: 13674

Re: Kobayashi for the win

No idea what happened to Kamui in the race, lost track of him for a bit! Made a change for Sauber to try a 3 stop with him though, if Vettel and co in front had pitted like they were expecting he would've been around 6 which ain't bad. But he still beat Perez, although Perez was very much thwarted ...
by qczhao
Sat Apr 14, 2012 8:18 pm
Forum: F1 & Motorsport Forum
Topic: The Official Kamui Kobayashi Thread
Replies: 58
Views: 32900

Re: The Official Kamui Kobayashi Thread

But are they the same actual people, as a whole, as a living team? I suppose that part of them remained, but the BMW guys surely are out, and... Not to mention that it's also about morale and momentum. Ligier was also once a great team, used to winning, but when they started regaining some shine ba...
by qczhao
Sat Apr 14, 2012 10:47 am
Forum: F1 & Motorsport Forum
Topic: The Official Kamui Kobayashi Thread
Replies: 58
Views: 32900

Re: The Official Kamui Kobayashi Thread

Well, Sauber is not exactly a team accustomed to winning, maybe this is one reason. Like the high air up the mountains, maybe they get some calls mixed-up, it will probably take them some more races like this to get accustomed to that feeling of being a front-runner and smooth their strategies acco...
by qczhao
Sat Apr 14, 2012 7:52 am
Forum: F1 & Motorsport Forum
Topic: Kobayashi for the win
Replies: 64
Views: 13674

Re: Kobayashi for the win

I would so so so love it if Kobayashi won.
by qczhao
Sat Apr 14, 2012 7:37 am
Forum: F1 & Motorsport Forum
Topic: Kobayashi for the win
Replies: 64
Views: 13674

Re: Kobayashi for the win

Would love to see Sauber win before Peter steps down, but thats not going to happen tomorrow. Best hope is podium. That too is a long shot as no rain for tomorrow. With McLarens and Redbulls behind I doubt Kamui will be able to stay where he is. But I would love to see explosive start from him. But...
by qczhao
Sat Apr 14, 2012 7:13 am
Forum: F1 & Motorsport Forum
Topic: The Official Kamui Kobayashi Thread
Replies: 58
Views: 32900

Re: The Official Kamui Kobayashi Thread

Finally, Kobayashi is able to show his pace and the pace of the car. ;)

Now, let's pray for him to drive a great race!
by qczhao
Mon Apr 02, 2012 5:50 pm
Forum: F1 & Motorsport Forum
Topic: What was up with Perez's rear wing
Replies: 5
Views: 2387

Re: What was up with Perez's rear wing

In fact, it was Perez who ran into the back of Kobayashi (in Australia). In Malaysia what you see for Perez is just normal lateral flexing; it seems accentuated there because the braking zone is a bit bumpy. Kobayashi had a poor race in Malaysia due to gearbox (FP2), broken roll bar (FP3 + Qualy) wh...
by qczhao
Thu Mar 29, 2012 9:51 pm
Forum: F1 & Motorsport Forum
Topic: Mika Hakkinen
Replies: 42
Views: 10252

Re: Mika Hakkinen

But, after his horrendous crash in Adelaide '95, where if Sid Watkins hadn't performed an emergency tracheotomy on him at the side of the track he would surely have died, to come back and win back to back WDC against Schumi... Well, even if he didn't have the natural talent of Senna or Prost or whoe...
by qczhao
Mon Mar 26, 2012 9:44 am
Forum: F1 & Motorsport Forum
Topic: Kobayashi deserves a chance at the front
Replies: 38
Views: 11948

Re: Kobayashi deserves a chance at the front

Being fast isn't enough. It's about getting those points at the end of the day. Which is what requires to become a WDC in a fast car, to get those points(plus wins, that's always good). It's funny when people thought Perez had the edge over Kobayashi in 2011, when this Japanese guy scored the major...
by qczhao
Sun Mar 25, 2012 11:43 am
Forum: F1 & Motorsport Forum
Topic: Driver of the day - Malaysia
Replies: 88
Views: 21284

Re: Driver of the day - Malaysia

make it a poll!

Also, Perez.
by qczhao
Sun Mar 25, 2012 11:30 am
Forum: F1 & Motorsport Forum
Topic: Easily one of the best races ever
Replies: 65
Views: 14689

Re: Easily one of the best races ever

A good race, not the best ever though.

Brazil 2008, now that was one of the best ever :)
by qczhao
Sun Mar 25, 2012 11:27 am
Forum: F1 & Motorsport Forum
Topic: The point of wet tyres?
Replies: 3
Views: 1876

Re: The point of wet tyres?

Anyone else getting a bit frustrated over the past few years at how proper wet races are just basically not allowed? Not the first time that they have red flagged the race only to then hold it up for about twice as long as was necessary. It makes no sense that we waited what must have been over an ...
by qczhao
Sun Mar 25, 2012 11:15 am
Forum: F1 & Motorsport Forum
Topic: The Official 2012 Malaysia GP Race Thread
Replies: 856
Views: 133359

Re: The Official 2012 Malaysia GP Race Thread

Congratulations for Perez for a great drive.

I am bitterly disappointed for Button and Kobayashi, my two favourite drivers who both had terrible race :(.
by qczhao
Sat Mar 24, 2012 9:52 pm
Forum: F1 & Motorsport Forum
Topic: The Official Kamui Kobayashi Thread
Replies: 58
Views: 32900

Re: The Official Kamui Kobayashi Thread

Disappointing qualifying today for Kobayashi 6 tenths slower than his team mate in Q2. Koba has been faster than Perez in all practise sessions though, so there's no reason to think a good race is not possible. A points finish is still on the cards. Fingers crossed! Some further info regarding Kamu...
by qczhao
Sat Mar 24, 2012 2:54 pm
Forum: F1 & Motorsport Forum
Topic: Where's Damon?
Replies: 13
Views: 4886

Re: Where's Damon?

Found him much more animated and enjoyable to watch in the pre-qualy show this week. So thumbs up!
by qczhao
Sat Mar 24, 2012 9:29 am
Forum: F1 & Motorsport Forum
Topic: Martin Brundle - the driver
Replies: 25
Views: 8360

Re: Martin Brundle - the driver

He did much better in sports car racing than F1. He won Le Mans 1990.
by qczhao
Sat Mar 24, 2012 9:11 am
Forum: F1 & Motorsport Forum
Topic: The Official Kamui Kobayashi Thread
Replies: 58
Views: 32900

Re: The Official Kamui Kobayashi Thread

Disappointing qualifying today for Kobayashi :(

6 tenths slower than his team mate in Q2. Koba has been faster than Perez in all practise sessions though, so there's no reason to think a good race is not possible. A points finish is still on the cards.

Fingers crossed!
by qczhao
Thu Mar 22, 2012 7:59 am
Forum: F1 & Motorsport Forum
Topic: Magic Button!!!!!
Replies: 125
Views: 30128

Re: Magic Button!!!!!

brownie123 wrote:return of the finger....

Image


I don't seem to mind it at all when it's Jessica doing it :p
by qczhao
Mon Mar 19, 2012 11:12 pm
Forum: Off Topic
Topic: Scriverner writers software
Replies: 6
Views: 3288

Re: Scriverner writers software

I use a free alternative: yWriter.

Probably not as slick as a paid-for version but does everything I need it to do :) http://www.spacejock.com/yWriter.html
by qczhao
Mon Mar 19, 2012 10:06 am
Forum: F1 & Motorsport Forum
Topic: Kobayashi deserves a chance at the front
Replies: 38
Views: 11948

Re: Kobayashi deserves a chance at the front

Are you saying he takes risks and then crashes out of the race? Because the only time I can remember where he DNF due to an accident that was of his making was Singapore 2010.
by qczhao
Sun Mar 18, 2012 9:29 pm
Forum: F1 & Motorsport Forum
Topic: Lucozade 1 - Red Bull 0
Replies: 40
Views: 12036

Re: Lucozade 1 - Red Bull 0

Red Bull beat Monster though, that will complicate the scores somewhat. Nice avatar - Lambert did well on Saturday! As for the Lucozade thing it isn't a one off deal, check out this article: http://www.mclaren.com/page/lucozade-to-help-drive-vodafone-mclaren-mercedes-performance You're telling me, ...