Power to Weight Ratio. Were does a boosted S stand
01-30-2009, 08:46 AM
#1
Registered User
Thread Starter
Join Date: Jun 2008
Location: Mukilteo,Seattle
Posts: 658
Likes: 0
Received 0 Likes
on
0 Posts
Power to Weight Ratio. Were does a boosted S stand
Hey guys, I have always been wondering how this affects over all performance. Can anyone explain why they think a boosted s2000 could be a perfect fit? 
Or how this is a key factor in automobile performance. This is what I found on power-to-weight-ratio.
http://en.wikipedia.org/wiki/Power-to-weight_ratio
Power-to-weight ratio (specific power) is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another. Power-to-weight ratio is a measurement of actual performance of any engine or power sources. It is also used a measure of performance of a vehicle as a whole, with the engine's power output being divided by the curb weight of the car, to give an idea of the vehicle's acceleration.
Power to weight (specific power)
The power-to-weight ratio (Specific Power) formula for an engine (power plant) is the power generated by the engine divided by weight of the engine as follows:
A typical turbocharged V-8 diesel engine might have an engine power of 250 horsepower (190 kW) and a weight of 450 kilograms (1,000 lb), giving it a power to weight ratio of 0.56 kW/kg (0.25 hp/lb).
Examples of high power to weight ratios can often be found in turbines. This is because of their ability to operate at very high speeds. For example, the Space Shuttle's main engines use turbopumps (machines consisting of a pump driven by a turbine engine) to feed the propellants (liquid oxygen and liquid hydrogen) into the engine's combustion chamber. The liquid hydrogen turbopump is slightly larger than an automobile engine (weighing approximately 320 kilograms (700 lb)) and produces nearly 70,000 hp (52.2 MW) for a power to weight ratio of 164 kW/kg (100 hp/lb).
Or how this is a key factor in automobile performance. This is what I found on power-to-weight-ratio. http://en.wikipedia.org/wiki/Power-to-weight_ratio
Power-to-weight ratio (specific power) is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another. Power-to-weight ratio is a measurement of actual performance of any engine or power sources. It is also used a measure of performance of a vehicle as a whole, with the engine's power output being divided by the curb weight of the car, to give an idea of the vehicle's acceleration.
Power to weight (specific power)
The power-to-weight ratio (Specific Power) formula for an engine (power plant) is the power generated by the engine divided by weight of the engine as follows:
A typical turbocharged V-8 diesel engine might have an engine power of 250 horsepower (190 kW) and a weight of 450 kilograms (1,000 lb), giving it a power to weight ratio of 0.56 kW/kg (0.25 hp/lb).
Examples of high power to weight ratios can often be found in turbines. This is because of their ability to operate at very high speeds. For example, the Space Shuttle's main engines use turbopumps (machines consisting of a pump driven by a turbine engine) to feed the propellants (liquid oxygen and liquid hydrogen) into the engine's combustion chamber. The liquid hydrogen turbopump is slightly larger than an automobile engine (weighing approximately 320 kilograms (700 lb)) and produces nearly 70,000 hp (52.2 MW) for a power to weight ratio of 164 kW/kg (100 hp/lb).
01-30-2009, 09:11 AM
#2
Registered User
Thread Starter
Join Date: Jun 2008
Location: Mukilteo,Seattle
Posts: 658
Likes: 0
Received 0 Likes
on
0 Posts
01-30-2009, 12:15 PM
#4
Registered User
Join Date: Oct 2002
Location: Ft. Lauderdale
Posts: 868
Likes: 0
Received 0 Likes
on
0 Posts
once you get your whp power ratio to about 10:1 you're doing good, that would be like your 2,800 pound S2000 having 280whp. that's gonna get you moving but not be too insane. get closer to 7.5:1 and the fun meter goes up some more, that would be about 373whp. get to 5:1 and the fun really starts, now you're at 560whp.
power to weight ratio is the only reason my CRX is quick. supercharged with a 25 shot I'm around 265whp, that's 8.67:1 power to weight ratio. that's like an S2000 having 323whp if my CRX had 400whp an S2000 would need 487whp to keep up 
power to weight ratio is the only reason my CRX is quick. supercharged with a 25 shot I'm around 265whp, that's 8.67:1 power to weight ratio. that's like an S2000 having 323whp
if my CRX had 400whp an S2000 would need 487whp to keep up
01-30-2009, 12:37 PM
#6
www.letstorquebhp.com
Based on that mine has the same power to weight as a Ferrari F430.
Though I doubt it goes as well
Based on that mine has the same power to weight as a Ferrari F430.
Though I doubt it goes as well
01-30-2009, 12:41 PM
#7
Registered User
Join Date: Oct 2007
Location: Annapolis MD
Posts: 2,259
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by kutsujula' date='Jan 30 2009, 01:21 PM
i've cut a good bit of weight on my car.
Trending Topics
01-30-2009, 12:57 PM
#8
Originally Posted by Revenge' date='Jan 30 2009, 04:41 PM
How did you remove weight, taking out the spare, lighter rims. Any other idea's?
truthfully, the only things that can be easliy done are spare, tools, jack. anything else becomes a how far should i take this problem.
ie
ac
vert top motors and top
passenger seat
door panels
i personally like the other side of the coin. ADD MORE POWER
