Norman A Posted May 25, 2012 Share Posted May 25, 2012 Hi guys, I have an old almost unused Sanwa 6 channel lying in a cupboard and I see that everything is now 2.4ghz, am I likely to encounter any problems using the old stuff in a rc model. Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted May 25, 2012 Share Posted May 25, 2012 How old is old Norman? There are still plenty of people using 35MHz gear, but if it's been sitting for a few years it would benefit from a service. At the very least the wiring needs checking for corrosion, especially on the negative battery lead. 35MHz can sometinmes be more sensitive to electrical noise in electric powered models, but as people used it for this purpose for years before the advent of 2.4, it can be overcome with carefull suppression measures and wiring layout. Quote Link to comment Share on other sites More sharing options...
Cyclicscooby Posted May 25, 2012 Share Posted May 25, 2012 As long as it range checks OK, then it'll be fine.. (aerial down, stand 30 paces away) I'm still using 35Mhz for most of my planes, with a Speccy DX6 just for BNF UMX's.. Yes, 35Mhz does suffer more interference problems than 2.4, but it's still minimal.. It was in use by everyone for atleast 40yrs before 2.4 came along Your problem is going to be, getting hold of 35Mhz Rx's, and Crystals, as they're getting harder to find... They're not hens-teeth yet, but certainly getting thin on the ground.. At Longmarston show, I got an ex-demo 8ch 35Mhz Rx from Al's hobbies, for £7, and found a stand with loads of Xtals.. I personally think, 35 is still good (with regards buying spares, etc) for about another 3yrs or so, then the difficulty finding Rx's n Xtals will finally kill it off... HTH's Luv Chrisie.. xx Quote Link to comment Share on other sites More sharing options...
Alan Cantwell Posted May 25, 2012 Share Posted May 25, 2012 need to know exaclty what set you have, with sanwa, its not all clear cut, as said look at the wiring, check plugs for corrosion, replace batterys, sadly, even a pair of batterys for the model and tranny will probably cost more than the sets worth, but as you want to use it, not sell it, that is of no conscequence, crystals can be differant, as can pulse widths of servos, the reciever, shortly before 2.4 appeared, underwent a modernisation to enable all servos to be interchangable between differant makes of radio (about 15 years too late though, sanwa missed the boat with servs sales, their servos are quite superb) get back to us with a set name, and more advice will be forthcoming, Chrisie, i bought my first set of radio from Jim Davis models, £275 over 12 months interest free credit, that was a futaba 27mhz set, that was 33 years ago, i flew it for quite a few years, before 35 came in, i remember the ho-ha when the need for a license was lifted, leaving us at the mercy of CB radio, so 35 has only been around for about--what--25-28 years? Quote Link to comment Share on other sites More sharing options...
Norman A Posted May 25, 2012 Author Share Posted May 25, 2012 Thanks for the prompt replies guys, it's an old Sanwa VG600 and I think it's about 10 years old. Just powered it up for the first time in years and it seemed to work ok but I will give it a proper charge over the weekend and give it a right good check over. Hopefully I will use it in one of those new fandangle foam electric gliders before too long but that's for another day. Quote Link to comment Share on other sites More sharing options...
Alan Cantwell Posted May 25, 2012 Share Posted May 25, 2012 is the reciever a black one, or a blue one? its a later set, should be ok, but do check the wiring, MOST important, dont just think the batteries are ok, i could show you batteries that you would pay good money for, and they wont even charge, let alone hold power!! Quote Link to comment Share on other sites More sharing options...
Norman A Posted May 25, 2012 Author Share Posted May 25, 2012 It's a blue one. Stuck the lot on charge so it will be interesting to see how it works out and long they hold the charge for. Quote Link to comment Share on other sites More sharing options...
Alan Cantwell Posted May 25, 2012 Share Posted May 25, 2012 they will hold the charge ok, but its when a load is out on them they show there traits Quote Link to comment Share on other sites More sharing options...
Norman A Posted May 28, 2012 Author Share Posted May 28, 2012 Charged it up for about 20 hours on Saturday night, left it until this evening, did a range check as mentioned earlier by Crisie, left it on for about an hour during which I gave the servos a five minute work out every 15 minutes. The only worrying thing is a little discolouring of the lead from the battery. Quote Link to comment Share on other sites More sharing options...
Alan Cantwell Posted May 28, 2012 Share Posted May 28, 2012 its black wired, if you scrape the insulation back, it will be discoloured, if the battery lead is bad, then there is a fair chance the capacity of the cells are way down, then there is thew tranny battery, the leads from the tranny and reciever swicth really need investigation, Quote Link to comment Share on other sites More sharing options...
Norman A Posted May 28, 2012 Author Share Posted May 28, 2012 Yes, I have heard of and seen black wires on old car electrics . The discolouring is only visible at the battery side at one of the connecto pins but it is only very slight, scraped off with the minimum of fingernail effort but I dare say the colour of the wire may well be black. How long should a fully charged receiver battery be good for ? Quote Link to comment Share on other sites More sharing options...
David Davis Posted May 29, 2012 Share Posted May 29, 2012 FWIW I fly a 65 powered Acrowot on an old black plug Sanwa Conquest which must be well over 20 years old without any issues. It was second-hand when I acquired it years ago, mind you, I've fitted brand new batteries! Quote Link to comment Share on other sites More sharing options...
Alan Cantwell Posted May 29, 2012 Share Posted May 29, 2012 I tend to give the batteries a charge after a couple of flights, so never had to face how long a battery would last, i dare say someone could guesstimate, but really, it depends on how much the servos are drinking, Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted May 29, 2012 Share Posted May 29, 2012 Of course you could always convert it to 2.4GHz !!!!!!!! Kev Quote Link to comment Share on other sites More sharing options...
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