RE: Physics and equations of top speed+torque!!!  
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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC On Road Nitro Cars >> RE: Physics and equations of top speed+torque!!!
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RE: Physics and equations of top speed+torque!!! - 4/19/2008 1:23:00 AM   
TRINI-LUCIAN


 

Posts: 31
Joined: 1/2/2008
From: St.AugustineTrinidad and Tobago, TRINIDAD AND TOBAGO
Status: offline 		Hey Gynaikas how about collecting all your academic posts and writing a small manual for on road RC'ers you can publish it and have it available online for a small fee

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I dont drive....I fly low!!! :)

(in reply to GYNAIKAS)
       Post #: 26

RE: Physics and equations of top speed+torque!!! - 5/4/2008 9:04:15 PM   
GYNAIKAS



Posts: 3606
Joined: 9/14/2006
From: Athens/Patras, GREECE
Status: offline 		Hi guys I'm back!!! I think that the manual is not a bad idea...but needs time...I'll think about it...

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I simply love perfection...do something as good as you can or don't do it at all...

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       Post #: 27

RE: Physics and equations of top speed+torque!!! - 6/25/2008 3:29:20 AM   
rican25


 

Posts: 451
Joined: 11/12/2007
From: Deland, FL, USA
Status: offline 		mind.... smoking..... cannot....... compute....... danger......overload....... BOOM!!!!
thanks alot GYNAIKAS now look what you did!!!

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Savage X Axial 32 3Speed, Turmoil Pro Sportworks .21 V2, Caster K8T GO .
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(in reply to GYNAIKAS)
       Post #: 28

RE: Physics and equations of top speed+torque!!! - 6/25/2008 4:14:09 AM   
turbodremz23



Posts: 389
Joined: 4/26/2008
From: Houston, TX, USA
Status: online 		this is why i stick to computers, and fabrication...

i've taken trig and calculus, but my mind just went to $#@&* with all that...

but in the end, I see and understand what you were obtaining...very impressive and very nice job.

+1 for a manual...

(in reply to rican25)
       Post #: 29

RE: Physics and equations of top speed+torque!!! - 6/25/2008 9:39:47 AM   
GYNAIKAS



Posts: 3606
Joined: 9/14/2006
From: Athens/Patras, GREECE
Status: offline 		LOL Come on guys...just concider it as a game...each variable means something...check the final equation for example...if you make anything in the numerator "bigger" then the top speed becomes higher and the acceleration slower. If you make anything "smaler" then top speed falls and acceleration increases. The oposite happens with the denumerator of the equation! That's all! I'll try and make a manual this summer when the examination period ends.

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I simply love perfection...do something as good as you can or don't do it at all...

(in reply to turbodremz23)
       Post #: 30

RE: Physics and equations of top speed+torque!!! - 6/25/2008 2:57:49 PM   
wolfgang123


 

Posts: 239
Joined: 3/5/2007
From: atlanta, GA, USA
Status: offline
quote:

ORIGINAL: GYNAIKAS

Let me give you a brief example. My engine revs at 38000rpm max. So (rpm)e = 38000 r/min (hpiracing sais 40000 out of the nitro star 18ss but I don''t believe them.LRP z.18 makes 36000 but mine is modified so I''m almost sure that it revs somewhere around 38000 practical). I use 23T pinion (2nd gear) and 43T spur. So T1=23 and T2=43. Also the final gears are Tf1=13 and Tf2=38. Also the wheel radius of my current wheels (rim+tire) is 3.4cm. So Rw=3.4

Vmax = 0.003768*((T1*Tf1*Rw)/(T2*Tf2))*(rpm)e => Vmax=0.003768*((23*13*3.4)/(43*38))*38000 => Vmax = 89.0825 [Km/h]

To convert that in mph: Vmax[mph] = 0.62*Vmax[km/h] => Vmax[mph] = 0.62*89.0825[km/h] => Vmax[mph] = 55.23mph



wow i understand that i dont really understand the abbreviations you used but i still pretty much get it.

(in reply to GYNAIKAS)
       Post #: 31

RE: Physics and equations of top speed+torque!!! - 6/25/2008 3:13:19 PM   
hitechglobalgroup


 

Posts: 18
Joined: 5/7/2008
From: Miami, FL, USA
Status: offline 		LMAO....I needed a good laugh today.......lol

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Que Bola...

(in reply to rican25)
       Post #: 32

RE: Physics and equations of top speed+torque!!! - 6/25/2008 6:38:42 PM   
GYNAIKAS



Posts: 3606
Joined: 9/14/2006
From: Athens/Patras, GREECE
Status: offline

_____________________________

I simply love perfection...do something as good as you can or don't do it at all...

(in reply to hitechglobalgroup)
       Post #: 33

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