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-   -   What watts? (https://www.rc-monster.com/forum/showthread.php?t=1498)

cabking 11.04.2005 06:45 PM

What watts?
 
Somebody asked me the other day 'how many watts is that motor in your Maxx?'

'Sorry watt?, I haven't a clue, but It keeps whipping your Savage eh?' was the best answer I could come up with :o


Could someone please give this fella a more informed answer than that. thank you :)
Its a 7XL on 18 cells

Serum 11.04.2005 07:08 PM

1800 watts, on good cells. (every good cell can deliver about 100 watts)

It's not using this power constantly, otherwise your batteries would be empty in a few seconds.

cabking 11.04.2005 07:38 PM

so its more about the voltage than the motor its self?

sorry for the school boy questions. :)

Rtsbasic 11.04.2005 08:23 PM

Well a motor can only give out what you put into it give or take resistance and efficency. With a motor like the 7XL batteries are probably the limiting factor in power (voltage, and the amount of amps they can put out while sustaining a good voltage).

nbcaznmaster 11.04.2005 08:47 PM

WATT=FORCE x VELOCITY, if there is no angle in its direction. WATT's standard units is N(x^2/s^3). Lol, ironically! we learned about it in physicas class today!

coolhandcountry 11.04.2005 09:02 PM

I thought a watt was voltage time amp draw.

That is why a battery can only supply about 100 watts. 100amps of draw and the voltage falls to 1 volt. That is why the bateries are the limiting factory. I learned this on rc monster forum. :p

nbcaznmaster 11.04.2005 09:13 PM

sorry! WATT is teh units for POWER. The power u talkign about it ELECTRICAL power!

Papa 11.04.2005 09:24 PM

NBC, did you sleep through grammar class today?

MetalMan 11.04.2005 09:33 PM

We just had our test today in AP physics on mechanical power (watts) and energy (joules). nbcaz, to simplify what watts is a measure of:
-Force x velocity (as you said)
-Energy / time - The amount of energy done over a period of time
-mass(kg) x distance(meter)^2 / time(sec.)^3

lipomax 11.04.2005 10:28 PM

power is power. Amp x Volts = Force x Velocity = I^2 R = .... All the units cancel out. they're all equivalent. Electrical power and mechanical power.

Serum 11.05.2005 04:24 AM

Poor guy only asked how many watts his system was.. :p

coolhandcountry 11.05.2005 09:12 AM

Well power in is power out. IF you only put 9oo watts of electrical power in. How do you get 2200watts of power out?

lipomax 11.05.2005 09:17 AM

You don't. Power in x efficiency = power out. With 18 cells, max peak power is around 1800-2000 watts. Factoring in efficiency, cabking's max power is around 2 HP. However, the torque curve is totally different for electric vs. gas so it feels like a lot more than a 2 HP gas.

Cabking: just tell the dude it's 2000 watts.

nbcaznmaster 11.05.2005 01:30 PM

im in ap physic also! our schudules must be similiar cuz its for AP test. You have to get so much done, in a certian amount of time

maxxdude1234 11.05.2005 02:06 PM

:C: .....what serum said.....


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