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> Tamiya mini 4wd v9, Blah , lazy to write one (Hobbies)

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david tamiya
post Sep 18 2010, 12:42 AM

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QUOTE(szngszng @ Sep 17 2010, 10:12 PM)
-power of gravity means is not just a good idea, it's the law...hahaha...
-motor,power, wheel spinning can only change the position or action on air, so it bring in diff cover shape which bring diff effect on air resistance...david, you are in this level already...hahaha
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I learn these stuff more then a decade ago
If not how to win race lol
szngszng
post Sep 18 2010, 12:50 AM

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QUOTE(david tamiya @ Sep 18 2010, 12:42 AM)
I learn these stuff more then a decade ago
If not how to win race lol
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that's why you are in diff level d... haha.. newbie like me have a lot to learn la...hahaha biggrin.gif


Added on September 18, 2010, 1:47 am
QUOTE(david tamiya @ Sep 18 2010, 12:42 AM)
I learn these stuff more then a decade ago
If not how to win race lol
*
Dear David,

china‘s unlimited speed champ recently forming a layout at his workshop...
user posted image
interested to have 1 like this at shop? so we can play together without flying to china...hahaha biggrin.gif

This post has been edited by szngszng: Sep 18 2010, 01:52 AM
TSsonic_cd
post Sep 18 2010, 02:28 AM

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can fit ar that layout ?
szngszng
post Sep 18 2010, 02:34 AM

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don't know... biggrin.gif biggrin.gif

This post has been edited by szngszng: Sep 18 2010, 03:49 AM
worldgenius
post Sep 18 2010, 03:49 PM

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I dont mind helping to build that track =D
Never did tried a high speed track before =D
One vote from me here hehe....
KeithKW
post Sep 18 2010, 06:59 PM

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QUOTE(szngszng @ Sep 17 2010, 10:12 PM)
-power of gravity means is not just a good idea, it's the law...hahaha...
-motor,power, wheel spinning can only change the position or action on air, so it bring in diff cover shape which bring diff effect on air resistance...david, you are in this level already...hahaha
*
does having a lower car height helps in aerodynamics? like the a F1 car..
TSsonic_cd
post Sep 18 2010, 07:30 PM

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QUOTE(KeithKW @ Sep 18 2010, 06:59 PM)
does having a lower car height helps in aerodynamics? like the a F1 car..
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stability it does . aerodynamically ar, need to test ...
KeithKW
post Sep 18 2010, 07:43 PM

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QUOTE(sonic_cd @ Sep 18 2010, 07:30 PM)
stability it does . aerodynamically ar, need to test ...
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cuz like F1 they have 'almost-touch-ground' height so that it could cut through air and produce downforce for the car.. correct me if i'm wrong hmm.gif
TSsonic_cd
post Sep 18 2010, 08:05 PM

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QUOTE(KeithKW @ Sep 18 2010, 07:43 PM)
cuz like F1 they have 'almost-touch-ground' height so that it could cut through air and produce downforce for the car.. correct me if i'm wrong hmm.gif
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the downforce comes from the wings of the car . its been said if the f1 car can move fast enough , you can drive upside down .
lolhalol
post Sep 18 2010, 09:38 PM

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lower car is not = to beter speed.
a properly setup car with the right choices in tires size , rollers, and angle = to better speed.


Added on September 18, 2010, 9:38 pm
QUOTE(KeithKW @ Sep 18 2010, 08:43 PM)
cuz like F1 they have 'almost-touch-ground' height so that it could cut through air and produce downforce for the car.. correct me if i'm wrong hmm.gif
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in f1 they have diffusers . tamiya dun have..

This post has been edited by lolhalol: Sep 18 2010, 09:38 PM
TSsonic_cd
post Sep 18 2010, 09:39 PM

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QUOTE(lolhalol @ Sep 18 2010, 09:38 PM)
lower car is not = to beter speed.
a properly setup car with the right choices in tires size , rollers, and angle = to better speed.
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win . but then lower the car , its a bit more stable .
lolhalol
post Sep 18 2010, 09:39 PM

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lower car is not = to beter speed.
a properly setup car with the right choices in tires size , rollers, and angle = to better speed.


Added on September 18, 2010, 9:38 pm
QUOTE(KeithKW @ Sep 18 2010, 08:43 PM)
cuz like F1 they have 'almost-touch-ground' height so that it could cut through air and produce downforce for the car.. correct me if i'm wrong hmm.gif
*
in f1 they have diffusers . tamiya dun have..

This post has been edited by lolhalol: Sep 18 2010, 09:40 PM
KeithKW
post Sep 18 2010, 09:45 PM

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QUOTE(sonic_cd @ Sep 18 2010, 09:39 PM)
win . but then lower the car , its a bit more stable .
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QUOTE(lolhalol @ Sep 18 2010, 09:39 PM)
lower car is not = to beter speed.
a properly setup car with the right choices in tires size , rollers, and angle = to better speed.


Added on September 18, 2010, 9:38 pm

in f1 they have diffusers . tamiya dun have..
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hmm i thought without diffuser also a lower car could cut through air better than a higher one... and yea like sonic said more stable cuz less air will travel underneath the car..
lolhalol
post Sep 18 2010, 10:05 PM

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QUOTE(KeithKW @ Sep 18 2010, 10:45 PM)
hmm i thought without diffuser also a lower car could cut through air better than a higher one... and yea like sonic said more stable cuz less air will travel underneath the car..
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there is two kinds of main kinds. one is teh cover is low. one is the car is physically low. Eg. Go see jap speed frp cars. most are not lowered. in-fact most have a high ride height due to the 35mm tires they use. but they use low covers . Physically lowered cars are difficult to get right , but if u get it right there are advantages . ( im talking about MS chassis ) .

btw its is not stable because of the air under the car. it is the lower center of gravity.


Added on September 18, 2010, 10:07 pmbtw using f1 as example not really that great if u are talking aero dynamics. F1 cars a highly complicated and most times their aero body work comes in packages. Just the diffuser alone , it is only a very small part of it..

This post has been edited by lolhalol: Sep 18 2010, 10:08 PM
TSsonic_cd
post Sep 18 2010, 10:23 PM

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i tot the diffuser meant to make the car stick to the ground ? ah heck , goota make one min 4wd wan and see .. and test on a speed track . lol
lolhalol
post Sep 18 2010, 10:25 PM

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diffuser help streamline the air coming from under the car. its create like a suction. will kep the car stuck to the ground. at least thats what i think it does. i might be wrong
TSsonic_cd
post Sep 18 2010, 10:29 PM

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QUOTE(lolhalol @ Sep 18 2010, 10:25 PM)
diffuser help streamline the air coming from under the car. its create like a suction. will kep the car stuck to the ground. at least thats what i think it does. i might be wrong
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wan create suction ar
do like this tongue.gif


KeithKW
post Sep 19 2010, 12:28 AM

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QUOTE(lolhalol @ Sep 18 2010, 10:05 PM)
there is two kinds of main kinds. one is teh cover is low. one is the car is physically low. Eg. Go see jap speed frp cars. most are not lowered. in-fact most have a high ride height due to the 35mm tires they use. but they use low covers . Physically lowered cars are difficult to get right , but if u get it right there are advantages  . ( im talking about MS chassis ) . 

btw its is not stable because of the air under the car. it is the lower center of gravity.


Added on September 18, 2010, 10:07 pmbtw using f1 as example not really that great if u are talking aero dynamics. F1 cars a highly complicated and most times their aero body work comes in packages. Just the diffuser alone , it is only a very small part of it..
*

hmm hmm.gif maybe mini 4wd just rely on good aerodynamic body i guess...


QUOTE(sonic_cd @ Sep 18 2010, 10:29 PM)
wan create suction ar
do like this tongue.gif


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LMAO!
szngszng
post Sep 19 2010, 01:27 AM

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i think is better to do aerodynamic for decreasing air resistance when moving forward... however, i don't think aerodynamic producing down force will suitable for mini 4wd( speed car).

1. F1 need it for corner, because F1 using steering to turning corner... mini 4wd using track to turn, so why mini 4wd need downforce to corner??

2. if you study more, you will know aerodynamic might produce downforce, over done will slow down the F1 car on straight...do you think you wan't your mini 4wd to slowdown on straight?

3. racing is all about balance....

4. i actually let my car high let the air go into the bottom...also, the cover actually produce lifting force, in this case, i no need to cut a lot from my car... the lifting force help to reduce the weight...and i can maintain my car strengh...

If you talk about aerodynamic for mini 4wd, i think this is better and more useful for mini4wd... speed car only... jump car might be diff story...
TSsonic_cd
post Sep 19 2010, 02:26 AM

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QUOTE(szngszng @ Sep 19 2010, 01:27 AM)
i think is better to do aerodynamic for decreasing air resistance when moving forward... however, i don't think aerodynamic producing down force will suitable for mini 4wd( speed car).

1. F1 need it for corner, because F1 using steering to turning corner... mini 4wd using track to turn, so why mini 4wd need downforce to corner??

2. if you study more, you will know aerodynamic might produce downforce, over done will slow down the F1 car on straight...do you think you wan't your mini 4wd to slowdown on straight?

3. racing is all about balance....

4. i actually let my car high let the air go into the bottom...also, the cover actually produce lifting force, in this case, i no need to cut a lot from my car... the lifting force help to reduce the weight...and i can maintain my car strengh...

If you talk about aerodynamic for mini 4wd, i think this is better and more useful for mini4wd... speed car only... jump car might be diff story...
*
i get what you mean .. if the car body is correct , it will generate lift making the car lighter and thus moving faster ?

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