Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by aj7897

  1. aj7897

    Relatively inexpensive 25:1 for 1 hp motor

    Hey all, I'm building a prototype of a new product and I need to reduce the speed of a 5400 RPM, 1 hp brushed DC motor by a ratio of 25:1. It needs to be bi-directional (i.e. no worm gears). I found a 25:1 two-stage planetary gearset from QC Gears with an appropriate torque rating, but it costs...
  2. aj7897

    How to control a Magnetorheological damper through Matlab code?

    MatLab -> serial comm -> microcontroller (or Arduino) -> PWM -> amplifier -> MR damper
  3. aj7897

    Building a 1.5 HP brushed DC motor drive w/ dynamic braking

    Hey all, I'm building a prototype for a consumer product, based around a "2.75" HP PM brushed DC motor from a treadmill (these things are always massively over-rated, it's probably more like 1.5 HP). It needs to have 2 quadrant operation (driving and braking, single direction). The controller...
  4. aj7897

    Cheap motor with position/force control

    Hey guys, I'm interested in creating a low-cost solution for force/position/speed controlled motor for a prototype. Basically I need to be able to extend a cable 3 ft with 0-250 lbf of dynamic resistance (from the motor), then retract it with a similar dynamic force. I'm a mechanical engineer...
  5. aj7897

    Variable displacement A/C compressor converted to hydraulics?

    Thanks for the responses (especially the brand suggestions). I'm actually planning on using the VDAPP as a CVT (like the Honda TRX500 Rubicon ATV). The TRX500 uses a fixed displacement pump to drive a VDAPP, thus varying the "gear ratio". I will only need the VDAPP, since I am going to convert...
  6. aj7897

    Variable displacement A/C compressor converted to hydraulics?

    Hey guys, I'm currently developing a prototype that will include some hydraulics and I'm considering utilizing a variable displacement axial piston pump (henceforth referred to as a VDAPP). I'm not a hydraulic engineer, so my knowledge of them is somewhat limited. I want one to play around...
See more

Part and Inventory Search

Back
Top