Is 170 lbf thrust enough to move 400-500lb on wheels?

[Monel Funkawitz]

At a good speed? Doing a project and I need to know if I have enough thrust to do this.

 

[KingNothing]

You mean 175 ft-lbs?

 

[glen]

Thrust = Force
F=ma
a=F/m

 

[Dulanic]

Originally posted by: Monel Funkawitz
At a good speed? Doing a project and I need to know if I have enough thrust to do this.

Yes, infact you could prob slap wings on it and it would fly 😛 hehe A airplace on average has about 1/4 the thrust as it's weight as a reference.

So yes that would be enough thrust to move that kinda weight on wheels.

 

[Ausm]

affirmative

Ausm

 

[Monel Funkawitz]

Hehe. Sorry, added lbf. 😀

Ok. This project might be official.

 

[KingNothing]

So...details of your project? 😀

 

[Chaotic42]

I'd like to see some math to prove it. 🙂

 

[Monel Funkawitz]

Originally posted by: KingNothing
So...details of your project? 😀

Its in the design stage right now, it all depends if I get the engine at a decent price.

I'd like to see some math to prove it.

Same here. I'll have a small fortune in this.

 

[jlee]

I'm ~140lb, and I can push my ~2400lb car...if that helps with anything..

Not very fast, but it moves easily enough.

 

[cavemanmoron]

Originally posted by: CadetLee
I'm ~140lb, and I can push my ~2400lb car...if that helps with anything..

Not very fast, but it moves easily enough.

the type tires has a bit to do with this

bicycle type tires that are tall and skinny move easier than short lawn mower type; 😉

 

[XCLAN]

Originally posted by: CadetLee
I'm ~140lb, and I can push my ~2400lb car...if that helps with anything..

Not very fast, but it moves easily enough.

Shrimp!

 

[jlee]

Originally posted by: XCLAN

Originally posted by: CadetLee
I'm ~140lb, and I can push my ~2400lb car...if that helps with anything..

Not very fast, but it moves easily enough.

Shrimp!

Tall and skinny shrimp..😛

 

[KDOG]

Funny this thread should come up, I've been thinking about attatching a Hydrogen Peroxide rocket engine to a BMX freestyle bike that I have...

 

[dmurray14]

Originally posted by: KDOG
Funny this thread should come up, I've been thinking about attatching a Hydrogen Peroxide rocket engine to a BMX freestyle bike that I have...

Funny that reply should come up...a few years ago me and a friend strapped a few "D" rocket engines to a skateboard and launched it, i'll be damned if that thing didn't go at least 40-50 mph....but we never had the balls to get an engine powerful enough for us to stand on it and have it push us.

 

[notfred]

Who's going to do the physics and prove this?

 

[Evadman]

That equivelent to almost 100 hp. You should be good.

 

[glen]

Originally posted by: Chaotic42
I'd like to see some math to prove it. 🙂

I already did it.

F=ma
a=F/m
you can plug in numbers if you want

 

[Howard]

Originally posted by: Evadman
That equivelent to almost 100 hp. You should be good.

170lb-ft at 2000RPM is 64HP

 

[Linux23]

shouldn't this be in highly technical...lol 😉

 

[DrPizza]

I was testing out a physics lab this summer for my classes... All it took was 60 pounds of thrust to get a 3000 pound vehicle to accelerate at a decent rate. (pushing it across a parking lot.)

 

[JC]

<Al> I don't think so, Tim. </Al>

😀

 

[Kntx]

Originally posted by: Howard

Originally posted by: Evadman
That equivelent to almost 100 hp. You should be good.

170lb-ft at 2000RPM is 64HP

What does RPM or pound-feet have to do with a rocket??? Nothin!!!

 

[chiwawa626]

Hmm i wonder what ur making...please do tell us.

 

[Martin]

Originally posted by: glen

Originally posted by: Chaotic42
I'd like to see some math to prove it. 🙂

I already did it.

F=ma
a=F/m
you can plug in numbers if you want

well, a bit more complicated that than, I think.


I wouldn't mind doing the "physics", did similar things last semester....

but that'll have to wait til later, or tomorrow.