Engine Doctor Posted September 29, 2022 Share Posted September 29, 2022 (edited) Just as a matter of interest I tried charging a battery from an old plane IĀ was given a few days ago . It had been hanging in a loft of a deceased modeller since the early 1970s . I say loft but it was like an upstairs room . He died some years after that, then his son kept it in his garage hanging up as a reminder of his dads models for 5 years or soĀ Ā To give an idea of itsĀ age it is from a Futaba "M" series AM set all in a beige plastic and in very clean conditionĀ . The leads and switch harness had no sign of corrosion or black wire so just out of interest I but it on chargeĀ . Nothing at first but after 20 min or so it started to take a charge . Now showing just over 5 v .Ā No it wont be used in a modelĀ but to take a charge after all those years is pretty good going forĀ old Nicads. Our modern Nimh die much quicker if neglected ! There is a complete flight pack incĀ Ā four of the beige servos two red and two black (L and R hand } a harness and Rx . If any radio collectors are interested then a small donation to Our Air ambulance and postage cost and they are your . PM me . Ā Edited September 29, 2022 by Engine Doctor Quote Link to comment Share on other sites More sharing options...
Phil Green Posted September 29, 2022 Share Posted September 29, 2022 I have a drawer-full ofĀ 50+ year-old DEACs that still hold a charge!Ā Ā Ā Ā (for decades, DEACs were the standard NiCd battery used by almost everyone) Ā 1 Quote Link to comment Share on other sites More sharing options...
Peter Jenkins Posted October 8, 2022 Share Posted October 8, 2022 Ah!Ā Them woz the daze! Quote Link to comment Share on other sites More sharing options...
Andy Stephenson Posted October 8, 2022 Share Posted October 8, 2022 You never needed a battery checker for a DEAC flight pack because all you had to do to see if there was enough left to have another flight was to look at the speed of your servos. DEACs have a very gradual discharge curve but they do hold charge for years. Quote Link to comment Share on other sites More sharing options...
Phil Green Posted October 8, 2022 Share Posted October 8, 2022 (edited) I wouldnt fly them now but we still use them for demos, & I have a few bench test bits & bobs that still run from decades-old DEACs š Heres the story, its absolutely true. Forty or soĀ years ago my Dad was an NCB surface worker maintainingĀ underground electronics, much of which was hermetically sealed orĀ potted. He saw the waste and expense of changing faulty modules and, ever curious,Ā set about a scrapĀ intercom module with aĀ bandsaw.Ā After destroying just a few intercomm units he'd found exactly where to cut to expose twoĀ internal 7.2v 500 DKZ DEAC packs and from that point on he supplied the entire club (Sheffield SSA) with DEACs at a time when few could afford new ones. Its been 15 years now, I wish he was here, I really do, he'd have lovedĀ it -Ā I think he would have revelled in the retro R/C revival, probably DEAC powered š Cheers Phil Edited October 8, 2022 by Phil Green 3 Quote Link to comment Share on other sites More sharing options...
Phil Green Posted October 9, 2022 Share Posted October 9, 2022 >>š¹ššš”š¦ šš š š š¦šššš šššĀ Just realised, itĀ was fifty years ago... around 1970. Time is scary, make the most of it! Quote Link to comment Share on other sites More sharing options...
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