SmartFeedSmartFeed          

Porsche Hangout


WELCOME - YOU ARE CURRENTLY VIEWING 419EATER AS A GUEST

By joining our community you will have the ability to post topics and access other forums reserved for members. Registration is quick, simple and absolutely free. Join our community today by clicking here.

ScamWarners.com - Internet Anti-Fraud Center - now open!


 NVH - PASS

View next topic
View previous topic
 
Post new topicReply to topic
Author Message
Charlie Muggins
Master Baiter


Joined: 21 Jan 2007
Posts: 118
Location: A place where happiness reigns, and music plays ever so loudly.


PostPosted: Wed Jan 24, 2007 1:33 pm Reply with quoteBack to top

Well Impresed!!

I not only find a scam baiting forum that gives me much gigglymode in the thermalloaders, I then find a thread discussing engineering/physics Shocked truly a font of all knowledge

I am back at University later this year, I'll call on you guys an gals when my brain hurts Embarassed .

_________________
I promise to stop requoting the previous post in full when I post myself. I really do know that is totally unnecessary because I've read the Forum Guidelines.

How long do I have to stand in this corner?


Dont Trifle with me, Custard!.....

Last edited by Charlie Muggins on Wed Jan 24, 2007 1:49 pm; edited 1 time in total
View user's profileSend private message
419weasel
The great and powerful Princess Mooshka


Joined: 26 Jan 2006
Posts: 4191
Location: Somewhere in a hole. Waiting.


PostPosted: Wed Jan 24, 2007 1:35 pm Reply with quoteBack to top

My brain alread hurts and I'm only 2 weeks into my degree! Shocked

_________________
GO GRRL BAITERS!!
Where there's a Weasel, there's a way.
Never trust a Weasel bearing gifts.

Click for lad pain. - New to the forum? Introduce yourself HERE!
Easter Egg 2012 pony Turns that frown upside down- TS
Mc Fry
<-- Official 419Eater buns awarded by Luther Blissett, bun-enabler extraordinaire.
Pith Helmet Remy D1ckson - 1,000 miles from Abidjan, Cote D'Ivoire to Lagos, Nigeria and back!

Lad Quotes
http://members.419eater.com/~419weasel/ladquotes.html
View user's profileSend private messageSkype Name
jojobean
Baiting Guru


Joined: 01 Dec 2005
Posts: 7586
Location: YOU WILL DRINK YOUR URINE IN A COMERCIAL BUS


PostPosted: Wed Jan 24, 2007 1:39 pm Reply with quoteBack to top

Charlie Muggins wrote:
....The last time I was a student America was killing it's young men in some futile war the other side of the globe, whilst announcing it's intentions to go to the moon....... No change there then!


^^^^

You might want to keep the politics out, the mods do bite when it comes to that. There are a lot of different views here on this board, so it is best to keep discussions like that elsewhere (not on this forum). Sorry for the backseat modding, I just don't want this thread locked.

Trust me, your brain will hurt quite a bit from the math!

_________________
Golden Pith Globe T.W.A.T Jack Boot
Christ Safari Ghana-Chad
Miracle Safari Benin-Chad
Omar Safari Edo-Abeche T.W.A.T
Adamu Safari Lagos-Abeche
Emi Safari- S Africa-Egypt-Sudan 10k miles
Chris Safari Jolly Roger Dakar-Niger-BF-Cameroon-Lagos-Mali-Nairobi 9.6k miles

Kevin Pith Helmet 10 Safari Accra- BF x2, Togo x2, Kumasi x3, Bolgatanga, Benin City, Tamale x2 Suitcase 5k miles Tattoo x 6
Kenny Safari Safari Safari 3k miles- dont f*ck me up about the payment plz. i have a policy about that. I JUST GOT A SMALL GOAT TODAY AND ITS IN MY HOUSE NOW. i lobve the goat.
Goat
Ben Safari Safari Safari 2.5k miles

Misc Pith Helmet 20 Pith Helmet 5 Pith Helmet 5 Safari Safari Germany-Holland, Atlanta, Beijing-ChangZhou, London-Glasgow, TIMBUKTU x 2
View user's profileSend private message
Don
Baiting Guru


Joined: 25 May 2004
Posts: 3045
Location: Italy, 87.2.222.132


PostPosted: Wed Jan 24, 2007 1:40 pm Reply with quoteBack to top

jojobean wrote:
Sorry for the backseat modding


It's ok, I've been watching the thread. Cool

_________________
Mortar x12
No sugar plum fairies have been hurt during the process of creating this message.

**"Freedom? There ain't no fuckin' Freedom!"**
View user's profileSend private messageYahoo MessengerSkype Name
Charlie Muggins
Master Baiter


Joined: 21 Jan 2007
Posts: 118
Location: A place where happiness reigns, and music plays ever so loudly.


PostPosted: Wed Jan 24, 2007 1:48 pm Reply with quoteBack to top

Point taken.......Trots off to shread CND tee shirt and delete comment

_________________
I promise to stop requoting the previous post in full when I post myself. I really do know that is totally unnecessary because I've read the Forum Guidelines.

How long do I have to stand in this corner?


Dont Trifle with me, Custard!.....
View user's profileSend private message
crossfire
Elite Baiter


Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away


PostPosted: Wed Jan 24, 2007 9:01 pm Reply with quoteBack to top

The vibration formula:

1. Divide vehicle speed kph by 8 (mph by 5)
The resulting number indicates the number of 8 kph (5 mph increments.
for example, If the corresponding speed of an NVH problem on a vehicle
is 72.4 kph (45 mph), the resulting 8 kph (5 mph) Is nine
8 kph (5 mph) increments = Vehicle speed mph/5

2. Obtain the corresponding tire size frequency at 8kph (5 mph) from the
Revolution Chart.(I have a chart in book with tire sizes and Rev/Sec @
5 mph)
Example 1: If the tire size on the vehicle is LT295/40R20, then the
revolution per second a 8 kph (5 mph) is 0.99
Example 2: If the tire size on the vehicle is P185/70R14, then the
Revolution per second at 8 kph (5 mph)is 1.19

3. Multiply the 8 kph (5 mph) increments by the revolutions per second
at 8 kph (5 mph)
In example 1, the results is 9 time 0.99 or 8.9 Hz. This means the
tire/wheel assembly has a frequency of 8.9 Hz or (9 Hz) at the vehicle
speed of 72.4 kph (45 mph)
In example 2, the results is 10.71 Hz or (11Hz), this means the tire
/wheel assembly has a frequency of 10.71 Hz or (11Hz) at the vehicle
speed of 72.4 kph (45 mph)
Tire/wheel frequency = 8 kph (5 mph) increments x tire revolutions

The calculated frequency of 9Hz is the first-order tire/wheel frequency

Determine revolutions per 8 kph (5 mph) using the following formula:
Rev at 8 kph (5 mph) = 20800/tire diameter/3600 x 5
Example using above tire size:
20800/tire diameter - 20800/25.76 = 80745
807.45 x 5 = 4037.25
4037.25/3600 = 1.2 revs at 8 kph (5 mph) Confused

Where are they coming up with 20800 and 3600?
My book does not tell me this... Confused

? What would the first and second order tire/wheel frequency be at the
following vehicle speeds
32 kph (20 mph) _________________
56 kph (35 mph) _________________
80.5 kph (50 mph) ________________
120.7 kph (75 mph) _______________

? Using a P265/75R15 tire, what is the tire diameter

30.64

If math is correct:
75x265=19875
19875/25440 = 7.82
7.82x2 = 15.64
15.64 + 15 = 30.64

Still don't know where their coming up with the 2540
Maybe ye mates can figure it out, this is tough...Confused
my brain hurts...

_________________
Click here to mass bait lotto lads
Greetings to you...
Note: Your fund with us is not in liquid form but in Bank Check
for your own good now you want to fuck up with me <[email protected]>
Osama Bin Laddin's hard Rocket [mask:1]<[email protected]>[/mask:1]
please send my details on how to reach you thanks <[email protected]>
PLEASE RESPECT YOUR SELF BY SENDING ME FAKE INFORMATION OK <tony_emeka>
Phish 1x United States
Fake Banks Killed: United Kingdom x8 |Nigeria x1 |Spain x1
View user's profileSend private messageSkype Name
persephone
Baiting Guru


Joined: 05 Jun 2006
Posts: 2846
Location: land of cloggies


PostPosted: Wed Jan 24, 2007 9:07 pm Reply with quoteBack to top

No worries people, Persephone rolled the dice....... the answer is 5 Cool

_________________
a strange idiot tracked you down on arrival you moved with him like a christmas goat to a strange hell hotel and gave him paper or what you call money my ass. - J3ff Rich4rds
Sand Timer 14 months and counting
I HAVE SEEN THAT YOU LOVE DOG SEX, LET ME KNOW WHEN YOU CAN COME TO AFRICA I WILL TAKE CARE OF YOUR HOTEL EXPENSES AT LEAST TO SATISFY THE DOG'S URGE - some banker
Closed lad accounts loads
pony pony Mortar x46 United States 3x Canada Malaysia 2x Netherlands 2x Nigeria 2x Ghana 3x Ivory Coast 9x United Kingdom 3x Spain Bahamas, The Germany Australia Algerian Flag Togo 2x Cellphone Pretty Rose Safari 4 days of travel - 7 days stuck in airport
View user's profileSend private messageMSN MessengerSkype Name
Herb Sewell
419Eater is my life


Joined: 19 Aug 2006
Posts: 406
Location: Atascadero State Hospital for the Criminally Insane


PostPosted: Thu Jan 25, 2007 11:26 am Reply with quoteBack to top

Looks like jojo and I have similar interests, kind of. I was a self-taught electrical engineer and engineering technician. I went to work for 20 years loving my job. I love electronics, it is still magical to me. My favorite thing about electronics, specifically electrical current flow is that it is invisible.

As to Algebra and higher maths, embrace it ! You all have the ability to learn it, it is key to understanding life as well as making money doing something you love. At some point you will start to "see" equations in hallucinations as well as in real life....
View user's profileSend private message
thud419
Baiting Guru


Joined: 04 Jan 2006
Posts: 3193


PostPosted: Thu Jan 25, 2007 2:02 pm Reply with quoteBack to top

Quote:
Rev at 8 kph (5 mph) = 20800/tire diameter/3600 x 5


From first principles:

distance per wheel revolution = pi d

if d is in inches, then so is the distance; divide by 63,360 to get miles.

miles/revolution = pi d / 63360

revolutions/mile = 63360 / (pi d)

multiply top and bottom by 1 hour

rev per hour / mile per hour = 63360 / (pi d)

seconds = hours x (seconds in minute) x (minutes in hour)
seconds = hours x 3600

rev per second = rev per hour / 3600

rev per second / mile per hour = 63360 / (pi d) / 3600

to convert from mph to 5mph units, divide by 5. eg. 20mph is 4 5mph units.

In this case, since mph is on the bottom, we multiply.

rev per second / 5mph = 63360 / (pi d) / 3600 x 5



The trouble is, I make 63360 / pi = 20168, ie 3% lower than the figure you have.

5mph = 8kph, accurate to 0.5%, so that isn't it.

Maybe it's a Finagle Factor. Or maybe it only works for small values of pi.

_________________
Click here to feel warm and cozy.

I did not f**k your wife in any way -- Nike Akanbi
I don't know what else to do or do I continue filling and filling forms. -- Barr. Koloti
you has been dribbling me up and down but I will show some thing you have never seen before, I think you breath air wait and see. -- Sand Timer Barr. Cole
Cellphone x14
United States x 0.25 won from Reaper in a sucker's bet

Hello Kitty! pony Mortar x8 Closed lad accounts x several
View user's profileSend private messageSend e-mailVisit poster's website
crossfire
Elite Baiter


Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away


PostPosted: Thu Jan 25, 2007 8:36 pm Reply with quoteBack to top

thud419,
That is awesome, you came very close to breaking the code, Cool
No where in my book do they break that down like you did, so
those figures have to already be in the math system to figure
the frequency and revs/Sec, once i get in class, I'll ask the
teacher to break it down for me and I'll catch up with or PM you
the results, I'm done with my tire and wheel figure, tho, one last
question:
?. Does the tire size make a difference in frequency at the same speed.
Lets do the math and find out:
Using a P265/75R15 (45 mph)
75 x 265 = 19875
19875 / 2540 = 7.82
7.82 x 2 = 15.64
15.64 + 15 = 30.64

Revs at (5 mph)
20800 / 30.64 = 678.85
678.85 x 5 = 3394.25
3394 / 3600 = 0.94
0.94 revs at (5 mph)

45 (mph) / 5 = 9
9 x (revs from above) 0.94 = 8.46 0r 8 Hz

Using a P185/75R14 (45 mph)
75 x 185 = 13875
13875 / 2540 = 5.46
5.46 x 2 = 10.92
10.92 + 14 = 24.92

Revs at (5 mph)
20800 / 24.92 = 834.67
834.67 x 5 = 4173.35
4173.35 / 3600 = 1.16
1.16 revs at (5 mph)

45 (mph) / 5 = 9
9 x (revs from above) 1.16 = 10.44 or 10 Hz
So the answer would be yes.

Thud419, my next and last test is Propeller Shaft Frequency Formula,
quite a bit of pages on this subject, knowing the tire/wheel frequency
I should be able to calculate the propeller shaft frequency.

Thanks for all the help

_________________
Click here to mass bait lotto lads
Greetings to you...
Note: Your fund with us is not in liquid form but in Bank Check
for your own good now you want to fuck up with me <[email protected]>
Osama Bin Laddin's hard Rocket [mask:1]<[email protected]>[/mask:1]
please send my details on how to reach you thanks <[email protected]>
PLEASE RESPECT YOUR SELF BY SENDING ME FAKE INFORMATION OK <tony_emeka>
Phish 1x United States
Fake Banks Killed: United Kingdom x8 |Nigeria x1 |Spain x1
View user's profileSend private messageSkype Name
crossfire
Elite Baiter


Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away


PostPosted: Sat Jan 27, 2007 4:30 pm Reply with quoteBack to top

Hey mates, I need a little more help if you
don't mind..

Porpeller Shaft Frequency

Knowing the tire/wheel frequency allows for easy
calculation of propeller shaftv frequency.
To determine propeller shaft frequency, multiply
tire/wheel frequency by the ratio of the rear axle.
Calculate propeller shaft frequency by these steps:

1. Obtain the rear axle ratio from the metal tag on
the diff. cover.

For example, inspection of the diff. cover on a vehicle
with an NVH problem at 72.4 kph (45 mph) reveals a rear
axle ratio of 3.9

2. Multiply the tire/wheel ffrequency of 9 Hz
(determined in last section) with the rear axle ratio
of 3.9

This results in a propeller shaft frequency of 35.1 Hz
or (35 Hz) at the vehicle speed of 72.4 kph (45 mph).
. propeller shaft frequency = tire/wheel frequency x
axle ratio

The calculated frequency of 35 Hz is the first-order
propeller shaft frequency. The second-order frequency
of the propeller shaft frequency is twice this number,
or 70 Hz.

thud419,
They make it sound so easy using the examples,
but what if the axle ratio is 3.08:1, ok, i can
configure the tires: 245/70R16 (diameter(29.50))
(revs)0.98

Vehicle speed/5 x tire Revs = tire/wheel frequency

Question:
4. what would the first and second order propeller
shaft frequency be at the given speeds?
56 kph (35 mph) 63, 126 (if my math is correct)
72.4 kph (45 mph) _____________________
80.5 kph (50 mph) _____________________
96.6 kph (60 mph) _____________________
120.7 kph (75 mph) ____________________

5. same thing again except using P195/60R15 with 3.08:1
axle

6. same thing again except using P225/75R15 with 4.11:1
axle.

With my course kit, it also came with a tool called
a Sirometer, cool tool how it works, here a url if
you've never seen one.

http://treysit.com/TREYSIT_Presserei_Schwalmstadt/Sirometer/sirometer.html

Once I get done with these axle propeller test, I'll
be done, the i can do my 50 question test.

I really do thank you all your help, especially thud419,
I mean it too..

_________________
Click here to mass bait lotto lads
Greetings to you...
Note: Your fund with us is not in liquid form but in Bank Check
for your own good now you want to fuck up with me <[email protected]>
Osama Bin Laddin's hard Rocket [mask:1]<[email protected]>[/mask:1]
please send my details on how to reach you thanks <[email protected]>
PLEASE RESPECT YOUR SELF BY SENDING ME FAKE INFORMATION OK <tony_emeka>
Phish 1x United States
Fake Banks Killed: United Kingdom x8 |Nigeria x1 |Spain x1
View user's profileSend private messageSkype Name
thud419
Baiting Guru


Joined: 04 Jan 2006
Posts: 3193


PostPosted: Sat Jan 27, 2007 5:40 pm Reply with quoteBack to top

Someone's got lost, either you or me.

Speed = 35mph
Speed/5mph = 7 5mph

Wheel Freq = 0.98 Hz/5mph

Wheel frequency = 0.98 x 7 = 6.85 Hz
Prop shaft freq = 6.85 x 3.08 = 21.11 Hz

One of us is a facter of 2.98 out.

_________________
Click here to feel warm and cozy.

I did not f**k your wife in any way -- Nike Akanbi
I don't know what else to do or do I continue filling and filling forms. -- Barr. Koloti
you has been dribbling me up and down but I will show some thing you have never seen before, I think you breath air wait and see. -- Sand Timer Barr. Cole
Cellphone x14
United States x 0.25 won from Reaper in a sucker's bet

Hello Kitty! pony Mortar x8 Closed lad accounts x several
View user's profileSend private messageSend e-mailVisit poster's website
crossfire
Elite Baiter


Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away


PostPosted: Sat Jan 27, 2007 6:37 pm Reply with quoteBack to top

My numbers are wrong, yep lost but 0.98 is revs, to figure
frequency/Hz:
Vehicle speed/5
35 /5 = 7
7 x 0.98 = 6.86 Hz/frequency

6.86 x 3.08 = 21.12

Hee hee, thud419 I'm glad you seen my mistake, I did the figure
wrong, but u just showed me another way of doing it. you only too
one step to figure frequency, by the book, I've been breaking down
the math and doing it in steps, but I do see how to do it now.
In other words 3.08 or 4.11 you just multiply it like you see it, I don't
have to round up or round down those number, that whats was Confused ing.

thanks for your reply.

_________________
Click here to mass bait lotto lads
Greetings to you...
Note: Your fund with us is not in liquid form but in Bank Check
for your own good now you want to fuck up with me <[email protected]>
Osama Bin Laddin's hard Rocket [mask:1]<[email protected]>[/mask:1]
please send my details on how to reach you thanks <[email protected]>
PLEASE RESPECT YOUR SELF BY SENDING ME FAKE INFORMATION OK <tony_emeka>
Phish 1x United States
Fake Banks Killed: United Kingdom x8 |Nigeria x1 |Spain x1
View user's profileSend private messageSkype Name
crossfire
Elite Baiter


Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away


PostPosted: Thu Feb 01, 2007 9:49 am Reply with quoteBack to top

Thanks mates, for all your help, thud149 I really thank you for
helping me through the math, I did pass with 90%, now I can
get in to my Teacher led course, which is two days in Atlanta
and any other coures...

Very Happy Very Happy Very Happy

cf

_________________
Click here to mass bait lotto lads
Greetings to you...
Note: Your fund with us is not in liquid form but in Bank Check
for your own good now you want to fuck up with me <[email protected]>
Osama Bin Laddin's hard Rocket [mask:1]<[email protected]>[/mask:1]
please send my details on how to reach you thanks <[email protected]>
PLEASE RESPECT YOUR SELF BY SENDING ME FAKE INFORMATION OK <tony_emeka>
Phish 1x United States
Fake Banks Killed: United Kingdom x8 |Nigeria x1 |Spain x1
View user's profileSend private messageSkype Name
Connie L. Gus
Moderator


Joined: 07 Oct 2005
Posts: 6451
Location: Somewhere over the rainbow


PostPosted: Thu Feb 01, 2007 3:20 pm Reply with quoteBack to top

Congrats to you crossfire and to all the other 419Eater gearheads. A 90% does not sound like just a "pass" to me. I would rate that as an "A". We need to make a SAE badge.

_________________
Mortar x8 Purple Flower Easter Egg
LISTEN TO ME WHAT DO YOU TAKE ME FOR ONE OF THOSE CHEAP CROOK OR WHAT -tobi donito
Closed lad accounts-a few, United Nations
LISTEN I CAN NOT TAKE YOUR SHIT ANY LONGER WE HAVE WHROTE A PETITION AGAINST YOU TO THE FBI WITH ALL OUR EVIDENCE YOU ARE INTO PROSTITUTION,DRUG DEALING, FORGERY, CREDIT CARDS FORGRY WESTEN UNION FALSIFICATION,DRUGING MEN,COMMETING MURDER, STEALING, DRUNCARD, ALL THIS WE HAVE THE EVIDENCE TO PROOF OUR CASE AGAINST YOU.-Johnson Hill
SafariI am not finding it any funny...Henry A., Lagos, Nigeria to Cotonou, Benin, WIMPed
Safari I am stranderd. Henry A. Lagos to Accra, WIMPed for 67 days.
* Help Keep Eater Running - Click here to donate
View user's profileSend private message
crossfire
Elite Baiter


Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away


PostPosted: Thu Feb 01, 2007 6:33 pm Reply with quoteBack to top

CLG, that would be nice, a ASE badge,
we would have too prove we passed to receive the badge
which I can

Thanks too you all

cf

_________________
Click here to mass bait lotto lads
Greetings to you...
Note: Your fund with us is not in liquid form but in Bank Check
for your own good now you want to fuck up with me <[email protected]>
Osama Bin Laddin's hard Rocket [mask:1]<[email protected]>[/mask:1]
please send my details on how to reach you thanks <[email protected]>
PLEASE RESPECT YOUR SELF BY SENDING ME FAKE INFORMATION OK <tony_emeka>
Phish 1x United States
Fake Banks Killed: United Kingdom x8 |Nigeria x1 |Spain x1
View user's profileSend private messageSkype Name
JoeTam
** REMEMBERED **


Joined: 16 Nov 2005
Posts: 2153
Location: Pulling foil arrows out of my head.


PostPosted: Fri Feb 02, 2007 2:48 am Reply with quoteBack to top

Nevada Vehicile Highway Pass? Pick one up in Tonopah, 10$. And off you go. Ever seen the movie "Tremors"? Easy.

_________________
pony Pretty Rose pony
Your moms pu$$! smokes ciggarettes, she whistles in the stadium with your Papa's [email protected]
Nwokeke.
I went to bank. they call police, why you do this to me? I canntsend you anything now.
Goat dog
View user's profileSend private message
Display posts from previous:      
Post new topicReply to topic


 Jump to:   



View next topic
View previous topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



E-Mail Header Analysis


All Content © 2003 - 419Eater.com
Powered by phpBB © 2001, 2002 phpBB Group :S5: FI Theme :: All times are GMT