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Car Action World's Fastest RC Car Challenge! What car are you going to build to break the world speed record for RC cars?

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  #501  
Old 10-23-2005, 07:44 PM
ssmokey24 ssmokey24 is offline
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Quote:
Originally Posted by rx78gp03s
that is so true, and when he says its in the triple digits, i think he's talkin bout price actually...lol



this is what my cars are based on

http://www.rcnitro.com/articles/SuperNitro2.asp
the one hits 100 like nothing
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  #502  
Old 10-23-2005, 07:46 PM
rx78gp03s rx78gp03s is offline
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Quote:
Originally Posted by ssmokey24


this is what my cars are based on

http://www.rcnitro.com/articles/SuperNitro2.asp
the one hits 100 like nothing
and how does that prove that YOUR car does 100?
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  #503  
Old 10-24-2005, 04:30 PM
InitialVelocity InitialVelocity is offline
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Even those its based off of the same car. That one had $4000 worth of hop-ups and custom pieces and I bet it was working harder than "like nothing" to get there.
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  #504  
Old 10-24-2005, 11:12 PM
ssmokey24 ssmokey24 is offline
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Quote:
Originally Posted by InitialVelocity


Even those its based off of the same car. That one had $4000 worth of hop-ups and custom pieces and I bet it was working harder than "like nothing" to get there.
4000 hop up parts? man i dont know where you get your parts but a couple of pullys, clutch bell, spur ,shocks, i can get that pretty cheap
and rx78gp03s i quess i cant prove it but if you want to come check it out first hand let me know
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  #505  
Old 10-25-2005, 03:22 AM
guver guver is offline
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Quote:
Originally Posted by 92gsr
speed is a function of power vs. aerodynamic drag. acceleration is a function of power vs weight. acceleration is important when determining the top speed of an rc car because of space limitations. the car has a small amout of time to accelerate to top speed before it has to turn or stop. with enough space weight has no impact on top speed.
I would agree somewhat, You must add "weight" to the equation of top speed.
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  #506  
Old 10-25-2005, 06:36 AM
InitialVelocity InitialVelocity is offline
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Quote:
Distance covered per second: approx. 150 feet (a football field every 2 seconds)

Tire revolutions per second: 205

Engine rpm at maximum speed: approx. 31,000 to 32,000

Engine cycles per second: 533

Energy equivalent of 5-lb. car traveling at 101.7mph—510 lb of energy (approx. the impact of a full-power swing of an ax)

Approx. cost: $4,500+

Dollar cost per mph: $75

Dollar cost for every mph over 60mph: $96

Time spent on project from start to finish: approx. 8 months
Hmm, Gee, I dunno. Cost of car $500. Cost of Parts $4000+. Its right there in a highlighted blue box on the first page of your link even.
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  #507  
Old 10-25-2005, 06:58 AM
ssmokey24 ssmokey24 is offline
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[QUOTE=InitialVelocity]Hmm, Gee, I dunno. Cost of car $500. Cost of Parts $4000+. Its right there in a highlighted blue box on the first page of your link even.[/QUOTE

you got almost everything right but my engines are hitting 42,000-50,000 rpms thanks to rick at rb mods
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  #508  
Old 10-25-2005, 08:24 AM
TimJohnson TimJohnson is offline
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[QUOTE=ssmokey24]
Quote:
Originally Posted by InitialVelocity
Hmm, Gee, I dunno. Cost of car $500. Cost of Parts $4000+. Its right there in a highlighted blue box on the first page of your link even.[/QUOTE

you got almost everything right but my engines are hitting 42,000-50,000 rpms thanks to rick at rb mods
that is only on an off load rev, not under load.
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  #509  
Old 10-25-2005, 12:20 PM
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NotWalkinBlind NotWalkinBlind is offline
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One way to prove you're hitting 100+ speeds is to have someone take a photo over the shoulder of the guy with the radar gun as he's clocking your car... have your car and the gun in the same shot.
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  #510  
Old 10-25-2005, 06:48 PM
nitrohead5300 nitrohead5300 is offline
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Pictures can be rigged too especially with all the photographic editing programs for computers
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  #511  
Old 10-25-2005, 07:32 PM
InitialVelocity InitialVelocity is offline
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What Clutch Bell/Spur are you running?

What are the pulley sizes?

What differentials?
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  #512  
Old 10-25-2005, 09:55 PM
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NotWalkinBlind NotWalkinBlind is offline
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Quote:
Originally Posted by nitrohead5300
Pictures can be rigged too especially with all the photographic editing programs for computers
Didn't think of that... I can see it now... numbers in the radar gun's screen showing 147.83 MPH.

"Hey man, whatchoo got in that thing?????!!!"

I was thinking he's probably not gonna fake a pic. Good grief, you could fake a vid if you knew what you were doing.
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  #513  
Old 10-25-2005, 10:33 PM
Tim'sLosi Tim'sLosi is offline
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Quote:
Originally Posted by NotWalkinBlind
Didn't think of that... I can see it now... numbers in the radar gun's screen showing 147.83 MPH.

"Hey man, whatchoo got in that thing?????!!!"

I was thinking he's probably not gonna fake a pic. Good grief, you could fake a vid if you knew what you were doing.

I sure wish they would run this race and clear out all the BS in this thread...it sure is full of it. A mag with nearly unlimited resources gets a car to do a best of 101 mph and this guy thinks his does it because he had his engine modded!
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  #514  
Old 10-25-2005, 10:48 PM
ssmokey24 ssmokey24 is offline
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Quote:
Originally Posted by Tim'sLosi
I sure wish they would run this race and clear out all the BS in this thread...it sure is full of it. A mag with nearly unlimited resources gets a car to do a best of 101 mph and this guy thinks his does it because he had his engine modded!


i shure like how everyone here (hates) if u belive it belive it not i dont care but if you think you got some thing and can get to central florida let me know
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  #515  
Old 10-25-2005, 10:56 PM
Tim'sLosi Tim'sLosi is offline
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Quote:
Originally Posted by ssmokey24


i shure like how everyone here hates.
No, not hate...there are just quite a few experienced modelers here that truly know the physics and engineering it takes to hit three digits and we know cars like yours DO NOT HAVE IT. And they pop up over and over again without a shred of evidence to back them up. You have a couple of nice rides but they are at least $3500 shy of the mark.
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  #516  
Old 10-25-2005, 11:01 PM
ssmokey24 ssmokey24 is offline
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Quote:
Originally Posted by Tim'sLosi
No, not hate...there are just quite a few experienced modelers here that truly know the physics and engineering it takes to hit three digits and we know cars like yours DO NOT HAVE IT. And they pop up over and over again without a shred of evidence to back them up. You have a couple of nice rides but they are at least $3500 shy of the mark.
i got more than that in mine right now so the supernitro on the magazine hits 100+ and my has better stuff than that one and have a stronger engine but just becouse its my it doent hit 100
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  #517  
Old 10-25-2005, 11:50 PM
trailranger trailranger is offline
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Still Power to Weight Ratio

If you take your car....any of your RC cars and measure its top speed. Then add in 250grams of lead ballast to that car and run it again. There will a noticable decrease in speed. Why....cause the car can not accellerate beyond its resistance. What extra resistance is there? Well at speed there is air resistance, harmonic vibrations, extra wheel drag from extra weight. When it comes down to it. The ligher car has just a lil more available power to go a lil faster and overcome the next level of all resistance on the car.

If you car ends up going faster with extra weight or lead added to it.....power to you or your pine wood derby track....it must be all down hill.
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  #518  
Old 10-26-2005, 12:39 AM
SquirrelNutz SquirrelNutz is offline
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you need wight to keep the car stabilized but too much will slow it down.
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  #519  
Old 10-26-2005, 06:24 AM
InitialVelocity InitialVelocity is offline
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Where in Central Florida are you?
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  #520  
Old 10-26-2005, 11:07 AM
nitrohead5300 nitrohead5300 is offline
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Quote:
Originally Posted by NotWalkinBlind
Didn't think of that... I can see it now... numbers in the radar gun's screen showing 147.83 MPH.

"Hey man, whatchoo got in that thing?????!!!"

I was thinking he's probably not gonna fake a pic. Good grief, you could fake a vid if you knew what you were doing.
...............You can fake just about anything you want to but would it be worth the effort?? My point is unless you are really there holding the radar gun you just don't know if it has not been staged.

Last edited by nitrohead5300; 10-26-2005 at 11:13 AM.
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  #521  
Old 10-27-2005, 09:49 PM
trailranger trailranger is offline
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I keep Hearing RB MODs

[QUOTE=ssmokey24]
Quote:
Originally Posted by InitialVelocity
Hmm, Gee, I dunno. Cost of car $500. Cost of Parts $4000+. Its right there in a highlighted blue box on the first page of your link even.[/QUOTE

you got almost everything right but my engines are hitting 42,000-50,000 rpms thanks to rick at rb mods

Thats right, RB MODS is hosted a race at my track last week. Sucks I don't play with nitro....or 1/8th scale. But I might start soon, college and work keep me away from electric during the week nights. Might I add, my love, insist that my love of the hobby...doens't smell or icky up the house.
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  #522  
Old 10-30-2005, 05:23 AM
Bart_Banaan Bart_Banaan is offline
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Next saturday 12 november 2005 there will be a Speedrun in Alkmaar, The Netherland, on an indoor cycletrack (a 200mtr wooden oval ~230yards). I'll be running my LiPo/Brushless powered Tamiya F-1 (F102) there. I've already reached 80mph/h+ (139km/h) in test runs on outdoor tracks, but now the car has been optimized for running on the cycletrack...

The motor is a LMT5300 with Warrior 9918 controller. I'm using two different LiPo's : a Graupner and a Kokam 3200mAh (20C~25C) 3-cell LiPo (11,1Volts) and the gearing is 32pinion/60spur direct drive. I'm aiming at 100Mph+ (>160km/h). We'll take cameras with us for photo's and films, which will be shown on my (Dutch-)website RC-Junkies.com

The car:












A link to the event on coming Saturday 12 november 2005:
http://www.amcc-nh.com/snelheidrace.htm
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  #523  
Old 10-30-2005, 11:32 AM
rx78gp03s rx78gp03s is offline
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wow now this thing looks like a winner
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  #524  
Old 11-01-2005, 07:42 PM
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Neon_Dave Neon_Dave is offline
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one question: You think those rear tires are small enough?

Nice car though. Looks really fast!

-Dave
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  #525  
Old 11-01-2005, 08:00 PM
elcid4300 elcid4300 is offline
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A man after my own heart! Looks great Bart!! I do have a question for you, isn't that a Kyosho Impress chassis? That is the only chassis I am missing from my RC F1 collection, wish I had bought one back in the day
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