03-14-2016, 11:02 AM | #1 |
|
Turbo LS3 powered Slingshot
this looks like it could be fun...but kind of a lot of power through 1 tire
http://www.lsxtv.com/news/swap-insan...led-slingshot/ |
03-14-2016, 11:45 AM | #2 |
Moderator.ca
|
A lot of power though 1 wheels, yes. And that gets compounded when you realize that the rear wheel is only supporting some 600 lbs of weight. Less weight = less traction. Wouldn't surprise me if that thing could spin the rear wheel in any gear.
But bravo to them for actually building it. Its not too often that a vehicle gets an engine swap to quadruple the horsepower.
__________________
Note, if I've gotten any facts wrong in the above, just ignore any points I made with them
__________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!!__________________ Camaro Fest sub-forum |
03-14-2016, 01:06 PM | #3 |
Drives: 2010 Camaro 2SS/RS Black & Silver Join Date: Aug 2010
Location: Richmond, VA
Posts: 8,228
|
Thats bad@$$
__________________
STAINLESS WORKS HEADERS-TUNED BY JANNETTY RACING-C.A.I. INTAKE-TAYLOR 409 WIRES-SOLO AXLE BACK EXHAUST-ELITE CATCH CAN |
03-14-2016, 06:36 PM | #4 | |
|
Quote:
|
|
03-15-2016, 07:24 PM | #5 | |
Drives: 12 MP4-12C, 16 Quattroporte Join Date: Mar 2012
Location: Working
Posts: 707
|
Quote:
F = MA -> A = F/M If you cut the mass in half, the required force to accelerate at a given rate is also cut in half (less inertia). Really, the biggest difference maker is the weight distribution and contact patch due to the weight. Obviously, this is oversimplified because there are numerous force vectors, but it probably doesn't spin as horribly as you would imagine. It has so little mass to move. |
|
03-15-2016, 10:03 PM | #6 | |
Moderator.ca
|
Quote:
To further specify your reason for why a tire spins: its because at that given wheel speed, the torque divided by tire radius exceeds the frictional co-efficient multiplied by the normal force at that wheel. Since physics is often incomprehensible when its just a jumble of words: Rear wheel power = torque x wheel speedtherefore Force = (power / wheel speed) / distanceOn the other side of things: Normal force = mass x gravity x % weight distributionThe Force at the contact patch = Torque / radius(tire) = co-efficient of static friction x normal forceOr ... F= (P/w)/r = mu(s) x NIf the power side exceeds the friction side, the wheel spins. Note that power and normal force are in direct proportion to each other. Consequently, the smaller the normal force, the less power can be used. But the faster you go, the more power you can use. Since the slingshot is very light, the maximum amount of power that it can apply is fairly low. At higher speeds, more power can be put down. But it could very well be that with the trike being so light, and the engine so powerful that even in 5th gear, the engine might still exceed the friction limit. Hence, my post. Also ... you didn't fully work out the implications of Newtons second law: (I'm sick of word equations at this point ... ) (1) F = ma = mu(N)masses cancel, therefore: a = mu(g)When an accelerating force is based solely on contact friction, mass becomes irrelevant. *edit* I'm ignoring the effect of inertia & lift/downforce as speeds increase
__________________
Note, if I've gotten any facts wrong in the above, just ignore any points I made with them
__________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!!__________________ Camaro Fest sub-forum |
|
03-15-2016, 10:15 PM | #7 | |
|
Quote:
|
|
03-15-2016, 10:34 PM | #8 | |
Moderator.ca
|
Quote:
On a related note ... I am very glad that engineering is based off of Newtonian rather than quantum mechanics.
__________________
Note, if I've gotten any facts wrong in the above, just ignore any points I made with them
__________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!!__________________ Camaro Fest sub-forum |
|
|
|