Phil Taylor 3

 I wrote my earlier bit about Ohm's Law / Theory before I discovered the forum.  Kevin's initial statement looked instantly wrong as soon as I read it!  Thank you Peter for your explanation regarding electric motor characteristics, I was intrigued by your information on "universal" motors being able to swing "larger" props for dragging 120" gliders aloft at  lower volts/low revs.  Am I correct in appreciating that this application must still be set up to take account of the motor and controller current limits ,and is the duration penalty worth it? As far as this thread on the forum is concerned, it shows how useful this type of discussion is and how many people can benefit.  Long may this type of communication last. Phil.

Dear Editor,I refer to the All Write e-mail from Kevin Annells in the October 2008 edition of RCM&E.When I was at college, I understood Ohm's Law to state that Current = Voltage divided by Resistance, Power = Voltage multiplied by Current or Power = Current squared multiplied by Resistance.Using the example given by Mr. Annells where there is 6 Watts power derived from 6 Volts and 1 Amp, the resistance of the circuit is 6 Ohms.In a circuit "of the same resistance", if the voltage is increased to 12 Volts, the Current increases to 2 Amps giving a Power of 24 Watts. (This may give a clue as to why 4s cells are used in preference to 3s cells for large models).I conclude therefore that the statement in "Give it a Whirl" was in fact quite correct.I think Ohm's Law still stands, and any attempt by Mr. Annells to reduce it to "Ohm's Theory" is to be ignored.Best Regards,Phil Taylor.

Please count me in, I would love to fly it using elcky power.

I would just like to say that I have been an ardent fixedwing fan for over 40 years.  I used to worship Ray Brown and his Coy Lady control line stunter way back and now have a 2.4 gH system flying electric.  As I am on crutches at the moment (ruptured Achilles Tendon), I have been reading Mr Ashby's helicopter articles and have got hooked.  I am amazed at the performance and value we can now access.  I started off getting a Silverlit heli and found I could fly it around the lounge quite well.  So, today my Esky Lama 4 arrived! If I have as much fun with this as with the little Sliverlit job I will be well on my way to being converted to rotary wing flying.  It just goes to show what an inspiration a few well written articles can achieve.  Thanks. Phil Taylor.