Vasantraj Pande

1 Andover Models 2 Sussex Model Centre 3 SebArt Angle 50e 4 Horizon Hobbies

Mode 2 Hampshire Hampshire Instructor

I shall be going for the 2.4gHz route ...... eventually, that's for sure. I can see no mention of the firmware version on the rx casing so thanks for the tip regarding the check, I might use my acromaster, certainly I need to send the existing receiver in that plane back for the update. All this just goes to show what a minefield the transition is from 35mHz to 2.4gHz, to me anyway; I didn't realise there were so many ins and outs and pitfalls to catch the unwary.  I suppose someone just starting out and choosing the 2.4gHz route would get compatible kit from the onset.  Hope so anyway. Thanks for your time and advice.

Timbo, thank you for that extensive and exhaustive reply. My financial situation dictates that I go for the cheapest option and will therefore pursue the 6v route of your original suggestion - I'm not sure whether my new and still boxed AR7000 has the latest firmware or not but I would expect so ... certainly hope so, I'll see if the Horizon web site can tell me. Just had a call from a club buddy who suggested that I consider remaining on 35mHz to avoid all the hassle!!!!!!!! Arggghhhh. Thanks again.

Thanks for your prompt help and advice Timbo. Previously I was having 10 minute flights on my 4.8v 1100mAh pack on 35 mHz, unfortunately I can't remember exactly how many flights I used to have but it was probably five or six before a recharge was necessary.  The 6v pack I can get is of 1700mAh capacity, so presumably if I kept to the same flight duration I'd expect my onboard voltmeter lights to show orange after fewer flights?  Seems logical.  Oh yes, I remember now being told the 6v pack in question consists of NiCd cells but not sure if that makes a difference to this situation.  It occurs to me from what I understand you to say, it would seem there is an alternative to the one you suggest and that is if I stick with the existing servos I should use the 4.8v pack?  It would seem to be 'second best' but nevertheless, presumably, viable?  Unless, of course, that in turn, raises the confusing (to me anyway) combination of other variables eg, type of plane, style of flying etc and the resulting load on the battery and the subsequent possibility of dipping below the threshold of the Rx lower voltage supply limit?  Hmmm, seems to my simple mind that using 6v would do away with all that uncertainty!!!!!!!

The discussion in this thread is fascinating and I certainly admire the wealth of knowledge people have - thanks for sharing. However I’m still puzzled about whether to use 4.8v or 6v and the talk about the different characteristics between NiCd and NiMH and the added effect of the battery capacity and all the other variables still has me confused. In my case, prompted by the onset of winter (strong winds, low temps et al) I’m in the process of resurrecting an ic plane of a few years ago.  I was flying it previously on 35mHz and using a 4.8v NiCd Rx battery of 1100mAh capacity.  The Rx was a JR NER649S and the four servos were all JR NES 517. I now want to use my DX7 so propose to install a new AR7000 receiver and a new 4.8v battery the capacity of which is 2200mAh. Then I was advised by a club friend that most use a 6v supply with Spektrum!!!!!!!! Though I’ve understood and enjoyed the technical content of this thread, I confess to not being totally aux fait with matters electrical so, if anyone can please advise me on which I should use, I’d be grateful. Thanks for your time.

Thanks in advance