Rod, These look very interesting and remind me of large mains motors from office machines. Where can a person obtain one of these? John (dadhav@...)...
Goedendag John and all, See this currently active thread: http://www.rcgroups.com/forums/showthread.php?t=1026145 Vriendelijke groeten ;-) Ron van Sommeren ...
... These look allot like motorcycle alternators. A cycle salvage may be a good source? Has anyone tried one? Kirk http://www.wallacecompany.com/machine_shop/...
... how bout this. http://www.rcgroups.com/forums/showthread.php?t=635563 heater blower motors from semi trucks and cadilacs. when the controller goes bad...
Hello friends. I think I'm leaning towards using a washing machine motor which has a large 42 leg stator and I'm not sure how many magnets are on it yet. Is...
Hi John F&P has different models : The motor with 42 slots/coils is equipped with ferrite pieces NSNS (4 poles) There are 14 blocks so 14x4 = 56 magnetic poles...
Hello Louis. It's good to hear from you again. I've also found out there is a 36 leg motor also made with lighter wire and more turns. I'm not looking for an...
Goedendag John ... http://www.rcgroups.com/forums/showthread.php?t=587208 Check out the 'calculator' above the table. Fill in #magnetpoles and #statorpoles and...
Hello John H. Yes, there is at least one beginner builder on this list and I want to thank you for the great videos you have posted and the beautiful machining...
Goedendag ;-) Don Strong quote: "Prices just reduced on Kits and parts including Magnets and magnet spacers; shafts, bearings and prop savers; bearing tubes,...
Goedendag ;-) Several calculators for motor building (e.g. magnet coverage, magnet jig). Don't know how I managed to not see that site for so long; ...
Hello, i am from Switzerland and just found this interesting Group I like to build Aircraft Models and do my own motors since about 3 Years. Meantime most of...
I often miss the obvious, so please tell me what I am missing here: As I understand it, a power mosfet responds proportionally to the gate voltage within...
That approach would mean that the mosfet ran rather hot. With PWM the mosfet is either on (relatively low power lost) or off (almost no power lost)....
See this powerpoint. Have your own conclusion... Aecio To: lrk-torquemax@yahoogroups.com From: n2coaching@... Date: Tue, 19 May 2009 18:14:29 +0000 ...
PWM is for efficiency. In linear mode, as you postulate, the MOSFET dissipates a lot of power In switching mode (PWM) is flips between off and on, both low...
One of the differences is that power dissipation in the mosfet is much higher. What you are suggesting is a linear MOSFET drive. Imagine the following example;...
Goedendag Aecio and all, ... I disabled attachments right from the start to prevent viruses from spreading via this group. If you want to share files, go to...
hi i want use of power full motor in helicopter model and i dont know how find this motor . plz presentation me best motor . i can use hdd motor and cd rom...
I had to replace the charging stator on a riding mower with a Kawasaki V-Twin industrial engine on it. It is an 18 pole stator about 6" in diameter and about...
Goedendag ;-) Donnie Watson wrote: ... It is an 18 pole stator ... ... The rotor would need to have 24 magnets ... Less cogging/noise with 20 or 22 magnets. At...
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