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  1. L

    do charge controllers with boost capability exist, and who might sell them?

    I am interested in capturing some of the low voltage electricity coming from a solar panel (that are used to recharge batteries) on a cloudy day. These solar panels come with a charge controller to regulate the electricity that goes into charging the battery, but it rejects all the electricity...
  2. L

    Does anyone know where i can find free cad drawings of a bicycle rear air

    shock suspension? I am looking for a CAD (or autodesk inventor) drawing of a bicycle rear air shock suspension similar to the one in the following link: http://www.sram.com/rockshox/products/monarch-r I tried to ask several bicycle suspension shock manufacturers such as...
  3. L

    what does a 15% gradient terrain or track means?

    In terms of a track or terrain, when the ground is said to have a maximum gradient of 15% what does it mean? I think it means that the tangent of the angle of the maximum elevation on the ground is 0.15, but I'm not sure. Does anyone knows? thanks
  4. L

    what does a 15% gradient terrain or track means?

    In terms of a track or terrain, when the ground is said to have a maximum gradient of 15% what does it mean? I think it means that the tangent of the angle of the maximum elevation on the ground is 0.15, but I'm not sure. Does anyone knows? thanks
  5. L

    can someone tell me the names of companies that manufacture bicycle suspension?

    I trying to buy the parts of the suspension of the front wheel of bicycles, so that I can incorporate them to a small vehicle that I am building. Does anyone knows what company makes those suspension? do they make them in smaller size?
  6. L

    Can bicycle rear shock suspensions be used for a small car?

    I am making this small car (wihich is about 4.5 feet in height, 3 feet wide, and 4 feet in length) that weighs about 200 lbs, has six wheels, and that will be running at a maximum speed of 9 miles per hours. Can I use the rear schocks suspensions of some mountanin bicycle to make a suspension...
  7. L

    Can rear shock suspension of bicycles be used for the suspension of a small car?

    I am making (designing and manufacturing) this small car (wihich is about 4.5 feet in height, 3 feet wide, and 4 feet in length) that weighs about 200 lbs, has six wheels, and that will be running at a maximum speed of 9 miles per hours. Can I use the rear schocks suspensions of some mountanin...
  8. L

    In boost dc to dc converters how fast does the MOSFET switch goes on an off?

    I read the general principles of how boost type DC to DC converters work. They are made up of an inductor, a capacitor, a MOSFET transistor switch, a diode, and a micro-controller. The micro-controller opens the switch and lets current coming from the input source go to the inductor which then...
  9. L

    In boost dc to dc converters how fast does the MOSFET switch goes on an off?

    I read the general principles of how boost type DC to DC converters work. They are made up of an inductor, a capacitor, a MOSFET transistor switch, a diode, and a micro-controller. The micro-controller opens the switch and lets current coming from the input source go to the inductor which then...
  10. L

    What do you think needs improvement in a personal icemaker?

    I have this design project for a mechanical engineering class, and I need to improve a portable icemaker with a maximum capacity of 1 cubic feet. I don't need to design the whole thing, i just have to select one part or component of the ice maker and come up with ideas to improve it. So, which...
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