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

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junichi_nonis
post Sep 17 2010, 03:04 PM

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QUOTE(szngszng @ Sep 15 2010, 04:22 PM)
then it will look like VS... i hope it's new chassis... improvement from MS concept...hahaha...or launch sprint dash pro... i am happy... biggrin.gif


Added on September 15, 2010, 5:02 pmuser posted image
for those who can and try to understand and willing to study some idea....

Galileo Galilei the guy who playing with gravity... you can't miss it... biggrin.gif
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Brother SZNG, dun try to confuse ppl with tat theory ya.. hahaha.. i dun think it is applicable in our case..

Attached Image

assuming launch angle and speed remained constant, blue dot is 1kg, purple dot is 2kg and yellow dot is 3kg..
based on the trajectory theory, the heavier the object; the further the object shall land..

cheers..

This post has been edited by junichi_nonis: Sep 17 2010, 03:15 PM
TSsonic_cd
post Sep 17 2010, 03:25 PM

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QUOTE(junichi_nonis @ Sep 17 2010, 03:04 PM)
Brother SZNG, dun try to confuse ppl with tat theory ya.. hahaha.. i dun think it is applicable in our case..

Attached Image

assuming launch angle and speed remained constant, blue dot is 1kg, purple dot is 2kg and yellow dot is 3kg..
based on the trajectory theory, the heavier the object; the further the object shall land..

cheers..
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wont it involve angle the and how powerful the object is thrown ?
hakim31z
post Sep 17 2010, 03:53 PM

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mini cars getting more complicated oso... physics teachers shud be power playing cars... tongue.gif aku rindu maen kerete dow... post some pics of current track layout. then i cn imagine wat setting 2 do... :'(
junichi_nonis
post Sep 17 2010, 04:06 PM

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QUOTE(sonic_cd @ Sep 17 2010, 03:25 PM)
wont it involve angle the  and how powerful the object is thrown ?
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of coz but like i mentioned, assume ur launch angle and velocity is constant (assuming at 30 degree and velocity at 7m/s)..

the principle behind this theory is to show that heavier object will tend to land further than light object (assuming both speed and launch angle is similar)..

however do bear in mind that, in actual race track, at times u might wan the car to land further and sumtimes lands nearer..

as per szng illustration, it shows that the object is at certain height (x meter) but velocity at zero.. it does not consist of the launching factor...

I have another picture below.. blue = 1kg, red = 2kg, green = 3kg.. all launch at 45 degree which is 15 degree higher than previous illustration.. yet, it still shows that lighter object tend to land nearer than heavier object..

Disclaimer: whether it works on mini4wd or not, u have to experience it..

cheers..

Attached Image
david tamiya
post Sep 17 2010, 05:40 PM

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I still can win without these lol
Do consider the wheel spinning at flight
Aerodynamic of the cover , chassis and types of rollers
Identical weight but diff stuff also plays tricks on us
Weight balance while take off , mid flight and landing

Anyone with more to add
How good if all were to disscuss like this rather than asking just to get answer
we all can learn by this ways of discussions
TSsonic_cd
post Sep 17 2010, 06:36 PM

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QUOTE(david tamiya @ Sep 17 2010, 05:40 PM)
I still can win without these lol
Do consider the wheel spinning at flight
Aerodynamic of the cover , chassis and types of rollers
Identical weight but diff stuff also plays tricks on us
Weight balance while take off , mid flight and landing

Anyone with more to add
How good if all were to disscuss like this rather than asking just to get answer
we all can learn by this ways of discussions
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motor position etc ?
david tamiya
post Sep 17 2010, 06:53 PM

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QUOTE(sonic_cd @ Sep 17 2010, 06:36 PM)
motor position etc ?
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nice one godfather
TSsonic_cd
post Sep 17 2010, 07:06 PM

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QUOTE(david tamiya @ Sep 17 2010, 06:53 PM)
nice one godfather
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he,but i think if all the dicussions of all that were taken into account , i think the entire thread would be full though ,.
worldgenius
post Sep 17 2010, 08:23 PM

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QUOTE(david tamiya @ Sep 17 2010, 05:40 PM)
I still can win without these lol
Do consider the wheel spinning at flight
Aerodynamic of the cover , chassis and types of rollers
Identical weight but diff stuff also plays tricks on us
Weight balance while take off , mid flight and landing

Anyone with more to add
How good if all were to disscuss like this rather than asking just to get answer
we all can learn by this ways of discussions
*
I'll have to agree fully on this haha...
Oh ya...break positions do make a diff too right? tongue.gif
szngszng
post Sep 17 2010, 08:47 PM

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QUOTE(junichi_nonis @ Sep 17 2010, 04:06 PM)
of coz but like i mentioned, assume ur launch angle and velocity is constant (assuming at 30 degree and velocity at 7m/s)..

the principle behind this theory is to show that heavier object will tend to land further than light object (assuming both speed and launch angle is similar)..

however do bear in mind that, in actual race track, at times u might wan the car to land further and sumtimes lands nearer..

as per szng illustration, it shows that the object is at certain height (x meter) but velocity at zero.. it does not consist of the launching factor...

I have another picture below.. blue = 1kg, red = 2kg, green = 3kg.. all launch at 45 degree which is 15 degree higher than previous illustration.. yet, it still shows that lighter object tend to land nearer than heavier object..

Disclaimer: whether it works on mini4wd or not, u have to experience it..

cheers..

Attached Image
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Haha, i am waiting for these kind of discussion as well...

1. it's a basic concept and idea, so ppl can understand the phenomena, no air drag in basic concept, so it's will shows nothing diff if no air drag...the pic i show above is the concept of "free fall".

2. yes, we must apply trajectory concept(good point josh, i am waiting some 1 show this out, free fall can't work without it for jumping mini 4wd biggrin.gif ), but the factor that decide how far it will go, are launching angle and speed...the timing of object landing will decided by the stopping height of the object.

3. air drag will depend on shape, not the mass. i can't understand the definition of air resistance on your simulation, air drag is too complex, and i don't think it's suitable to putting it in the basic understanding...


Added on September 17, 2010, 8:55 pmhowever do bear in mind that, in actual race track, at times u might wan the car to land further and sumtimes lands nearer..

-yes, i am totally agree with it, so when we understanding the basic theory, we can control the timing with understanding....


Added on September 17, 2010, 8:59 pmas per szng illustration, it shows that the object is at certain height (x meter) but velocity at zero.. it does not consist of the launching factor...

-we do have this kind of situation, when we landing from the bridge... when all the height are same, due to speed, the landing point might be diff but the landing time will be the same....

-and think about it, whatever mini 4wd launching, it will come to the highest point, and started to landing... free fall play the role when it reach the highest point. unless we have a launch from down hill...

This post has been edited by szngszng: Sep 17 2010, 10:14 PM
KeithKW
post Sep 17 2010, 09:03 PM

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wow nicely said.. yea gravitational force.. anything no matter wad size or mass they will reach the ground the same time
szngszng
post Sep 17 2010, 09:13 PM

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maybe this help....

This post has been edited by szngszng: Sep 17 2010, 10:06 PM
KeithKW
post Sep 17 2010, 09:34 PM

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omg took me to watch it 2 times to get what they were testing... myth busters rox! notworthy.gif
david tamiya
post Sep 17 2010, 09:56 PM

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QUOTE(KeithKW @ Sep 17 2010, 09:03 PM)
wow nicely said.. yea gravitational force.. anything no matter wad size or mass they will reach the ground the same time
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i doubt the same time theory
there is always momentum to be considered
power of the motor and battery also plays a big part
KeithKW
post Sep 17 2010, 10:09 PM

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QUOTE(david tamiya @ Sep 17 2010, 09:56 PM)
i doubt the same time theory
there is always momentum to be considered
power of the motor and battery also plays a big part
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true true... like the test that the video shown and what u have said before.. aerodynamics also play a big role in this
szngszng
post Sep 17 2010, 10:12 PM

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QUOTE(david tamiya @ Sep 17 2010, 09:56 PM)
i doubt the same time theory
there is always momentum to be considered
power of the motor and battery also plays a big part
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-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

This post has been edited by szngszng: Sep 17 2010, 10:21 PM
KeithKW
post Sep 17 2010, 10:31 PM

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lol its been a while since i touch physics.. this is kinda fun putting studies theory and laws into a toy rclxms.gif
worldgenius
post Sep 17 2010, 10:44 PM

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Dam it...Too bad i wasn't in a science class cry.gif
KeithKW
post Sep 17 2010, 10:52 PM

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if school teaches me physics with mini 4wd, i confirm get A d haha
worldgenius
post Sep 17 2010, 11:07 PM

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QUOTE(szngszng @ Sep 17 2010, 09:13 PM)


maybe this help....
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holy crap....how i wish i onli have half of their brains =D

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