What is the practical possability of building a home brew VFD? If so, can parts be had from common surplus items? The application would be to run a hobby metal...
You can go up to 1HP with 120Vac input without tripping a 15A breaker. I designed one at Baldor that has a switched capacitor input and supplies 230Vac 3PH ...
Hello Ron, Yes, I took a look at this software before, but thought is't quite complicated to make a start. Do you have any experience with this software? And...
Goedendag, More free 'magnetic' simulation software, Maxwell SV, a subset of Ansofts Maxwell 2D software. I have no experiance with this software or with FEMM:...
Goedendag Robbert, ... I have no experience with this type of software at all, sorry. Vriendelijke groeten ;-) Ron van Sommeren Utrecht (this week), the...
Hello everyone! Thanks for having me. I am a novice by all means but will be learning more I hope. I'm a certified Auto Mechanic. I have been repairing cars...
Hi ... Pete Nice to see you in the group. Welcome ... You are welcome to discuss about your problem here .. We all are there to help u out in solving With best...
Hi all, I know you guys are a sharp bunch and I would really appreciate your opinion on using a sensor (hall, optical) or sensorless control system for a BLDC...
Hi John, I have some good experiences with optical sensors as well because they are better in sensing the exact position of rotor to stator. This can be useful...
Very interesting, I used to ride foot-ups in the '70's, the name of the game was trying to get your engine to run like an electric motor. We spent all the week...
John, I have designed motor controllers for the automotive market for many moons. Sensorless is great for known loads at medium to high speeds. Examples...
Hi Robbert, Thank you very much for your sensor advice... The first motor I got was a 2.6 kW frameless Megaflux torque motor from Emoteq and it worked well but...
Mmm, Thanks for your offer John, Looks like you are using quite expensive hightech motors to drive your bike? Think they dont sell under 1000 USD for motor an...
Hi John, What capacity cells? I though of making one too, but I thought the trip between sections would be too much for the battery, some sections are quite...
Hi George, I use mine as a back yard toy and swap packs when needed... One pack of 3700 mah cells is good for 10 - 20min depending on how hard you are riding. ...
John, BTW. There are automotive grade optical encoders either increamental or absolute. Just see the Avago Technologies Web site. But be warned. You will...
NEW battery technology invented by Caterpillar, and spun off to Firefly Energy earns 3 landmark patents. http://www.fireflyenergy.com Daryl Oster (c) 2006 ...
Hello Dex, Please explain what you experienced with the optical encoders that are not automotive grade? Did you experience problems with vibrations, under/over...
Robbert, The optical encoder that was tested (in the late 90's) did not pass the SAE 1455 vibration testing. Also I remember the 50g half sine wave shock...
Thanks for letting me join your group! Not to sure I'm in the right group yet but I have a question maybe someone can help me with. I'm making a model...
Goedendag, Pontus Claesson (a.ka. runnjarn in www.yahoogroups.com/group/lrk-torquemax) ordered 'some' stators. The NO18 sheet is expensive so he also has...
Goedendag ;-) Five new and excellent brushless motor building articles by Brian Mulder, a must read, will prevent you from asking a lot of questions: ...
I just bought a Singer 111W155 industrial sewing machine (1950's vintage), and am having trouble with the motor. It's a Singer Electric Transmitter S-463162,...
The obvious question - is that a single or three phase motor? Many/most industrial sewing machine motors are 3 phase. A 3 phase motor will usually start on...
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