Can anyone help me with how to build a RC helicopter from my old RC car(or point in the direction of someone that can. I took everything apart. I have the motherboard, engine, and the things that make it turn. The engine is very powerful, so it should be able to lift a good size helicopter.
Posted in RC Cars
Tagged anyone, Car, direction, Engine, everything, Helicopter, motherboard, point, rc helicopter, size, size helicopter, someone
I have 3 motors that I got from hot wheels cars. They have a rechargeable battery wired to the motor and that’s it. I was wondering if there is anyway that I can tweak the motors so that I can control them with an old controller that I have. (Is this even possible?) I’m making an RC balloon but would like to use motors I already have to control its altitude and direction. I have a fan on the motors. One on both sides to make it turn and one that will blow in to the balloon to make it go up or if I use helium to make it go forward or just forget about a third one if it gets too heavy.
If this is possible I would also like to add the guts of an old digital camera so I can take pictures from the balloon. Can I control that with the controller too?
If anyone has a good website or helpful advice I would appreciate it. Thanks.
Posted in RC Cars
Tagged altitude, Balloon, battery, controller, direction, fan, helium, hot wheels cars, Motor, rechargeable battery, thatâ, tweak
How long does the fuel burn for in a usual model rocket (let’s say 5-10 oz.)? What is the estimated height? How does wind direction affect results? What is the best recovery route?
Posted in Model Rockets
Tagged affect, direction, Flight, flight pattern, Fuel, height, model, model rocket, oz, pattern, Rocket, say, typical model, wind, wind direction
Where can I get a map of local wind speeds and direction online? I want to get detailed maps if I can. This is so I can determine the proper locations to fly various RC planes. I have some that can take no wind, some that need less than 10mph, some that can handle 20mph… so I need accurate speeds that are current. This is in Lakewood, CO and the wind speeds change by the hour. The obvious weather sites don’t seem to have what I need. I checked Weather.com,local news sites and NOAA, and NCAR. All I can get is the readings from Buckley AFB, DIA, and Jeffco Airport, which are all miles from here. Is that as accurate as it can get?
If I’m at the area already I can estimate wind by looking at trees, flags, and whatever, but yeah I’d like to know before I get there… so I can pick whether to fly at this park or the one across town or if it’s best to stay home or whatever…
Posted in RC Planes
Tagged buckley afb, com, detailed maps, direction, fly, hour, jeffco airport, Lakewood, lakewood co, local news, map, mph, News, news sites, noaa, online, rc planes, weather, weather sites, wind, wind speeds
1. A worker pulls a sled with a force of 80 N directed at an angle of 60 degrees above the horizontal over a level distance of 6 m. If a frictional force of 24 N acts on the sled in a direction opposite to that of the worker, what net work is done on the sled?
a. 240 J, b. 216 J, c. 144 J, d. 96 J
2. A model rocket sits on the launch pad until its fuel is ignited, blasting the rocket upward. During the short time of blast-off, as the ignited fuel goes down, the rocket goes up because:
a. momentum is conserved in this process
b. the fuel pushes on the ground
c. air friction pushes on the escaping fuel
d. the downward force of gravity is less than the downward momentum of the fuel
please explain why you believe the answers are what they are just in case yours are different than mine. thanks a lot guys!
3. A 10 g bullet with an initial speed of 100 m/s is fired horizontally into a 90 g wodden block initially at rest on a frictionless horizontal surface. The bullet passes completely through the block and emerges with a final speed of 20 m/s in the horizontal direction. How much mechanical energy is lost in this process?
a. 44.4 J
b. 50 J
c. 26.4 J
d. 20 J
Posted in Model Rockets
Tagged acts, angle, direction, distance, Force, frictional, frictional force, horizontal, level, sled, work, worker
1. A worker pulls a sled with a force of 80 N directed at an angle of 60 degrees above the horizontal over a level distance of 6 m. If a frictional force of 24 N acts on the sled in a direction opposite to that of the worker, what net work is done on the sled?
a. 240 J, b. 216 J, c. 144 J, d. 96 J
2. A model rocket sits on the launch pad until its fuel is ignited, blasting the rocket upward. During the short time of blast-off, as the ignited fuel goes down, the rocket goes up because:
a. momentum is conserved in this process
b. the fuel pushes on the ground
c. air friction pushes on the escaping fuel
d. the downward force of gravity is less than the downward momentum of the fuel
please explain why you believe the answers are what they are just in case yours are different than mine. thanks a lot guys!
3. A 10 g bullet with an initial speed of 100 m/s is fired horizontally into a 90 g wodden block initially at rest on a frictionless horizontal surface. The bullet passes completely through the block and emerges with a final speed of 20 m/s in the horizontal direction. How much mechanical energy is lost in this process?
a. 44.4 J
b. 50 J
c. 26.4 J
d. 20 J
Posted in Model Rockets
Tagged acts, angle, check, direction, distance, Force, frictional, frictional force, horizontal, level, physics, physics problems, sled, worker
