Author |
Message |
Charlie Muggins
Master Baiter
Joined: 21 Jan 2007
Posts: 118
Location: A place where happiness reigns, and music plays ever so loudly.
|
Posted:
Wed Jan 24, 2007 1:33 pm |
|
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 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 . |
_________________ 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 |
|
|
|
419weasel
Baiting Guru
Joined: 26 Jan 2006
Posts: 4207
Location: Somewhere in a hole. Waiting.
|
Posted:
Wed Jan 24, 2007 1:35 pm |
|
|
|
|
jojobean
Baiting Guru
Joined: 01 Dec 2005
Posts: 7586
Location: YOU WILL DRINK YOUR URINE IN A COMERCIAL BUS
|
Posted:
Wed Jan 24, 2007 1:39 pm |
|
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! |
_________________
Christ Ghana-Chad
Miracle Benin-Chad
Omar Edo-Abeche
Adamu Lagos-Abeche
Emi - S Africa-Egypt-Sudan 10k miles
Chris Dakar-Niger-BF-Cameroon-Lagos-Mali-Nairobi 9.6k miles
Kevin Accra- BF x2, Togo x2, Kumasi x3, Bolgatanga, Benin City, Tamale x2 5k miles x 6
Kenny 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.
Ben 2.5k miles
Misc Germany-Holland, Atlanta, Beijing-ChangZhou, London-Glasgow, TIMBUKTU x 2 |
|
|
|
Don
Baiting Guru
Joined: 25 May 2004
Posts: 3045
Location: Italy, 87.2.222.132
|
Posted:
Wed Jan 24, 2007 1:40 pm |
|
jojobean wrote: |
Sorry for the backseat modding |
It's ok, I've been watching the thread. |
_________________ x12
No sugar plum fairies have been hurt during the process of creating this message.
**"Freedom? There ain't no fuckin' Freedom!"** |
|
|
|
Charlie Muggins
Master Baiter
Joined: 21 Jan 2007
Posts: 118
Location: A place where happiness reigns, and music plays ever so loudly.
|
Posted:
Wed Jan 24, 2007 1:48 pm |
|
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!..... |
|
|
|
crossfire
Elite Baiter
Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away
|
Posted:
Wed Jan 24, 2007 9:01 pm |
|
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)
Where are they coming up with 20800 and 3600?
My book does not tell me this...
? 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...
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]<drmkhoza@unionplus>[/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
Fake Banks Killed: x8 | x1 | x1 |
|
|
|
persephone
Baiting Guru
Joined: 05 Jun 2006
Posts: 2846
Location: land of cloggies
|
Posted:
Wed Jan 24, 2007 9:07 pm |
|
No worries people, Persephone rolled the dice....... the answer is 5 |
_________________ 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
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
loads
x46 3x 2x 2x 2x 3x 9x 3x 2x 4 days of travel - 7 days stuck in airport |
|
|
|
Herb Sewell
419Eater is my life
Joined: 19 Aug 2006
Posts: 406
Location: Atascadero State Hospital for the Criminally Insane
|
Posted:
Thu Jan 25, 2007 11:26 am |
|
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.... |
|
|
|
|
thud419
Baiting Guru
Joined: 04 Jan 2006
Posts: 3193
|
Posted:
Thu Jan 25, 2007 2:02 pm |
|
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. -- Barr. Cole
x14
x 0.25 won from Reaper in a sucker's bet
x8 x several |
|
|
|
crossfire
Elite Baiter
Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away
|
Posted:
Thu Jan 25, 2007 8:36 pm |
|
thud419,
That is awesome, you came very close to breaking the code,
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]<drmkhoza@unionplus>[/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
Fake Banks Killed: x8 | x1 | x1 |
|
|
|
crossfire
Elite Baiter
Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away
|
Posted:
Sat Jan 27, 2007 4:30 pm |
|
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]<drmkhoza@unionplus>[/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
Fake Banks Killed: x8 | x1 | x1 |
|
|
|
thud419
Baiting Guru
Joined: 04 Jan 2006
Posts: 3193
|
Posted:
Sat Jan 27, 2007 5:40 pm |
|
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. -- Barr. Cole
x14
x 0.25 won from Reaper in a sucker's bet
x8 x several |
|
|
|
crossfire
Elite Baiter
Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away
|
Posted:
Sat Jan 27, 2007 6:37 pm |
|
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 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]<drmkhoza@unionplus>[/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
Fake Banks Killed: x8 | x1 | x1 |
|
|
|
crossfire
Elite Baiter
Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away
|
Posted:
Thu Feb 01, 2007 9:49 am |
|
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...
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]<drmkhoza@unionplus>[/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
Fake Banks Killed: x8 | x1 | x1 |
|
|
|
Connie L. Gus
Moderator
Joined: 07 Oct 2005
Posts: 7243
Location: Somewhere over the rainbow
|
Posted:
Thu Feb 01, 2007 3:20 pm |
|
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. |
_________________ x8
LISTEN TO ME WHAT DO YOU TAKE ME FOR ONE OF THOSE CHEAP CROOK OR WHAT -tobi donito
-a few,
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
I am not finding it any funny...Henry A., Lagos, Nigeria to Cotonou, Benin, WIMPed
I am stranderd. Henry A. Lagos to Accra, WIMPed for 67 days.
* Help Keep Eater Running - Click here to donate |
|
|
|
crossfire
Elite Baiter
Joined: 08 Oct 2006
Posts: 1152
Location: ten light years away
|
Posted:
Thu Feb 01, 2007 6:33 pm |
|
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]<drmkhoza@unionplus>[/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
Fake Banks Killed: x8 | x1 | x1 |
|
|
|
JoeTam
** REMEMBERED **
Joined: 16 Nov 2005
Posts: 2153
Location: Pulling foil arrows out of my head.
|
Posted:
Fri Feb 02, 2007 2:48 am |
|
Nevada Vehicile Highway Pass? Pick one up in Tonopah, 10$. And off you go. Ever seen the movie "Tremors"? Easy. |
_________________
Your moms pu$$! smokes ciggarettes, she whistles in the stadium with your Papa's D!@K.
Nwokeke.
I went to bank. they call police, why you do this to me? I canntsend you anything now.
Goat dog |
|
|
|
|
|
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
|
|