Hello, I was reading the paper called "LRK motor analysis worksheet" wrote by Edie Currants. ( http://femm.foster-miller.net/examples/lrk40/lrk-bldc.pdf ) I'm...
... Edie_currants is a regular contributor to the femm Yahoo Group, and might be persuaded to answer your questions if you asked them there. I just discovered...
Thank you very much. I just joined the femm group. I was "playing" a little with FEMM software and it´s very good to me. Now I´m designing the motor in...
I found nice stator from rate gyro I bought from eBay for $12. More info and pictures http://www.rcgroups.com/forums/showthread.php?t=653790 I am not sure - is...
Hi guys, I have a BLDC motor (with hall sensors) that I need max performance from in forward and reverse. The problem is that the halls are mechanicaly...
Hi X (John?) One solution could be to forget Hall Sensors and to use a sensorless ESC for RC brushless With an"auto-timing" the performance is good in both...
Hi Louis, That would be a good solution but I am afraid that the sensorless method may not be ideal as I am running low RPM (3000 max). I have read that...
Hi I have little or no knowledge on brushless motors and Esc's. I am looking for a Brushless esc that can do proportional forward and reverse. I have looked at...
Goedendag, A 2,5 and a 1,4gr diy outrunner: www.crazyplanes.de -> brushless Prettig weekend ;-) Ron van Sommeren near Nijmegen, the Netherlands ... I am using...
Goedendag, Stators have arrived: <http://www.rcgroups.com/forums/showthread.php?t=654664> Vriendelijke groeten ;-) Ron van Sommeren near Nijmegen, the...
... Most of the "modern" controllers from Castle Creations, Schulze and Kontronik do this. They are all sensorless. The ESC uses the original settings as a...
Hi Guys, Could you recommend NiMH cells for current around 100-125 A ( 30 sec) . And where it is possible to buy it? Thanks With best regards Grisha ... Be a...
The best of the crop at the moment are the IB4200WC -- sub C cells from Intellect Battery. The Gold Peak sub-C's can do 100A and are more readily available....
Does it have to be NiMH? I would use two A123 cells in parallel. 120A would be in spec and I guess 2.7v per cell. Cheapest on ebay as Dewalt 36v power tool...
Hi Rick, I would love to get rid of the sensors but everyone seems to have a different opinion on the subject. Some tell me that if I want smooth acceleration...
Hi John I think that very few people in the world have BOTH (comparative) experience on sensored AND sensorless ESCs. My opinion is that A WELL DESIGNED...
Hi John I am one of the usually quiet members of this list, but I feel I can give 10 cents to this one. I have reasonable experience in designing both...
Hi Cobus, Thanks for sharing your experience with me! I figure if you hammer on the throttle the motor will be spinning @ 400 RPM in 0.1 seconds so I don't...
... spinning @ 400 RPM in 0.1 seconds so I don't think I have a problem. You're about to get into a smoking problem if you do that. He meant that before you...
Hi John, I see what you are saying... I wonder if this governing feature is built into some sensorless control ICs? Thanks for the tip John G, ... From:...
Hi John I agree that if you bang the throttle like that it will more than likely create smoke BUT your motor's characteristics also govern how fast it will...
Lucky find from eBay: TIMKEN SUPER PRECISION BEARINGS THIN-SECTION QTY 10 PR, Not much more info ... but decided to buy and received today, For $25.00 (+...
Weight is 6,1g only. H. Lucky find from eBay: TIMKEN SUPER PRECISION BEARINGS THIN-SECTION QTY 10 PR, Not much more info ... but decided to buy and received...
Hi everyone, My first post..., Sorry, if it's beyond the intention of this group. I believe it was Mark who said in another thread, "Anyway why not use two...
I will add, that my idea is to have both motors drive only one prop, not like contra in the other posting. My goal for the electric, is to achieve level...
Hi If you are powering the one prop. I would use an second belt drive and a one way bearing once you shut down the devil you can start the electric. Still I...
Hi Mark, I had a long highway drive today to think it over, and yes I agree it makes more sense to couple the electric on the drive side of the prop. I'm...
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