Flywheel shaped like a solid cylinder?
959353
All of the power from the motor goes to friction because they just let the wheel coast and burn up all the energy.  But, I'm sure that wasn't the intended answer for the problem\n\nYou need to make a few preliminary calculations:\nFirst you need the Inertia of the flywheel which you can find given the mass and radius of the wheel.\n\nThen you need to calculate the angular acceleration required to bring an object at rest up to 5.88 rad/s in 0.531 sec.  Using this, you can get the torque of the motor - friction.\n\nFinally, calculate the angular acceleration required to bring an object spinning at 5.88 rad/s down to rest in 26.8 revolutions.  Using this, you can get the torque of the friction by itself.\n\nAdd the second result from the first to get the torque of the motor.  Take the friction torque and divide by the motor torque times 100 to get percentage of friction.
222298
You're talking 2 totally different trans-axle types.If you haven't done anything like this before,don't try.You're begging for headaches.\nA friend of mine once wanted more performance from a dune buggy,he went to a junk yard & found a Porsche engine from a roll-over(same trans-axle configuration).You also can't beat a horizontally opposed engine for ease of repairs.
807395
http://eta.physics.uoguelph.ca/tutorials/torque/Q.torque.inertia.html\n\ngives 2I=mr^2  so I = 163*0.306*0.306/2\n\nhttp://buphy.bu.edu/~duffy/py105/notes/AngularMo.html\n\ngives 2 * kinetic energy = Iw^2\n\nso KE at 1500rpm = I*4/2*pi^2*(1500/60)^2 joules - everything is frictionless so this is the work done in accelerating the flywheel to 1500 rpm\n\nyou can work out the KE at 1181 rpm and find the difference that was dissipated as heat.\n\nbest of luck - Mike
957813
Hi Either one of two answers. If the string is pulled and releases from the flywheel it allows more turns (faster wheel motion). If the string stays attached then you want the weight as small as possible.
753244
Think of the wheels as spinning masses or revolving weights, in fact gyroscopes. \nEach wants to turn left or right while spinning but is constrained by it's axis,\nHowever both drift overtime.\nNow add another pair further back and wider apart, and this pair are not on the same line of travel.\nWith four wheels all wanting to drift the resultant direction becomes a straighter line.
83508
If you have ever noticed tread patterns on tires, there will be seemingly random variations in the pitch and withdth of tire sections.  This is to reduce the harmonics of the tire tread on the road and disturb resonant frequencies for a quieter tire.  \n\nPlacing different sized fins on say a lawnmower engine flywheel creates the same effect in the air: it prevents whiny resonances across the RPM range to make a quieter engine and disturb the resonances that would exist otherwise.  \n\nAnother reason there may be different fins is due to the magneto magnet cast into the flywheel.  Some flywheels are composites with a cast aluminum section or a special magnetic section which is attached to the flywheel later on.  The attachments force them to change the fin design in the area of the rivets, or screw castings, or whatever feature they have chosen to mount to the wheel.  Then they must grind a flat opposite the embedded accessory for balancing purposes, which may also include the grinding off of fins in that area as well, causing it too look asymmetrical.  \n\nIf you look at replacement mechanical fan blades for older vehilces you will notice that the fins are not equally spaced.  You might have 3 close together, a wide gap on either side, and then 2 fins directly opposite the three.  This is to control the vibration of the fan and disturb all the resonances to keep the fan safe and keep it from coming apart at certain RPM.  It also makes a quieter fan. \n\nResonances develop in a mass-spring system, which define many rotating assemblies.  If you know the mass of the system and the spring constant, you can calculate the resonant frequency.  This is the point where the driving frequency matches and reinforces the frequency of the mass-spring system, and they continue to amplify the load until the device explodes.  Complex systems have nodes of resonant frequencies, which vary in intensity and value along a frequency band.  \n\nAs an experiment, you can get in your bathtub and close the sliding glass door.  Sing a single note and vary the pitch of that note.  You will notice that some notes become very loud, even though you are not putting more effort into making the sound.  The bathroom walls are forming a cavity of a certain length, and when you hit an even harmonic, the cavity will reinforce the waves and make the sound louder.  This increase in volume is the same increase in energy mass-spring systems encounter when driven at the resonant frequency.\n\nUsually engineers try to make the worst resonant frequency much higher than the assembly will ever see in its use.  For instance, the resonant frequency of an engine may be 10,000 RPM.  They will limit it to 7,000 with a governor to prevent the engine from exploding.
667922
Either use volumes of revolution or compare cross sections of the sphere and a cylinder with a couple of cones removed. The latter is how Archimedes did it.
701883
This is either a pipe or tube (i.e. muffler pipe for your automtoive is made this way) that has ben bend from flat metal into a tube shape and then welded together to form a solid pipe/tube.\n\nA good explanation can be found at:\nhttp://www.thefabricator.com/ResistanceWelding/ResistanceWelding_Article.cfm?ID=89\n\n\nOther sites that will give more inforamtion:\nhttp://files.aws.org/wj/supplement/01-2004-CHOI-s.pdf\nhttp://www.usstubular.com/facilities/erw.htm\nhttp://www.lbfoster.com/piling/pipepile.html\nhttp://www.weldingengineer.com/1%20Resistance.htm\nhttp://www.ipsco.com/Products/TubularProductManual/TubularProductManualERWIntro.pdf\nhttp://www.phamitech.com/pd_tubemill.htm\n\n\nHope that you find these sites useful.\n\nGood Luck.
567501
a DC motor loaded with a semi-circle iron piece in its shaft
164933
a lighter cluch and fly wheel will give you some faster reving, but actual acceleration not much if any.\n\nbest reason for lighter flywheel and cluch is that you can "match reves" faster/ easier if u dont know what matching revs is..... its when u have to down shift esp. into a corner you dont want a sudden sump in reves or power to the wheels as htis can causr understeee/ oversteer so the process of matching reves somes into play so as u dow n shift from lets say 3 to 2nd the rpm's will rice so b4 you let the cluch out into the lower gear you must give the motor more gass to be at the rpm level the next gear will be at if done right there will be a smooth transaction from 3 to 2nd gear resulting is a smoother corner and better track times...
671843
to make an ideal one you would look at the fluid dynamics equations.\n\nHowever ideal ones are very thin at the end and would break so to make real ones you would need some engineering know-how. So that it is strong enough and generates enough lift for your purpose.
523362
American Speedster has both plans and kits for some very interesting quadracycles. Some are built from pvc using hand tools and recycled bike parts. See the link below.\n\nSometimes there are plans advertised on e-bay but some of them are just photocopies from old mechanics magazines.
851866
Does it have to be a triangle??\n\nA cylinder is what comes to mind for me.  Like a soda can sliced in three equal parts.
297357
http://www.webmath.com/geo_cylinder.html\nif u want examples go to this link or find another link on yahoo
954062
put an arm perpindicular on the shaft, put another arm pinned to the first, and slide the second through a sleeve.\n\njust like an old fasioned steam engine turned linear movement (piston) into rotary(drive wheel
554878
look at grainger.com for a dual action air cylinder, (probably 1/2" diameter x 6" stroke), also look for a manual control valve.\nadd an air compressor and it's almost built for you.\n\nmake sure to add some guards as the air cylinder will deliver at least 500 lbs force
1147399
A long skinny cylinder is the preferred shape for high pressures.  But if you have a cylinder and a sphere with the same diameter and wall thickness, the sphere will have a slightly smaller hoop stress because theoretically there is no "hoop" in a sphere since the diameter is never a constant over any width of cross section.