Dai Fledermaus Posted December 14, 2012 Share Posted December 14, 2012 As some of you will know from my previous threads, I'm building a Tyro Major after many years away from the hobby, so I'm starting from scratch in terms of equipment and knowledge. I need to buy a few servos to finish off building the fuselarge, but I'm a bit confused by the type and range available. What is the basic difference between analogue and digital types for example and how does that relate , if at all, with the R/C reciever used. Should I be aware of any compatibility issues? Finally, prices seem to vary from £6 for say a hitec HS 311 to well over a £100 for others. I know everyone will have their favorites, but can you recomend a suitable servo which isn't going to break the bank? The Tyro Major has plenty of room in the cabin, so the size of the servo is not realy an issue. Quote Link to comment Share on other sites More sharing options...
FlyinBrian Posted December 14, 2012 Share Posted December 14, 2012 Analog vs Digital refers to the type of amplifier inside the servo, both should work fine with most rceivers. You can get servos for as little as a couple of quid from HK but otherwise any of the mainstream brands will do fine for your application. For the Tyro Major I'd go for the HS311 mentioned, cheap and reliable. Quote Link to comment Share on other sites More sharing options...
Andrew Jarvis 1 Posted December 14, 2012 Share Posted December 14, 2012 Yep, no need for any fancy stuff here, in the days that the Tyro Major was designed, servos were anologue, weighed as as much as a house brick and barely produced 2kg torque, HS311 as mentioned or my choice would be Futaba 3003s, both more than up to the job. Quote Link to comment Share on other sites More sharing options...
bouncebounce crunch Posted December 14, 2012 Share Posted December 14, 2012 Colin, I Agree with what the blokes above have said, the servos today are far better than their grandparents and those big costly boys are for more than the sport flyer. if you talk to your local hobby shop or flying club you will be pointed in the right direction. good luck. Quote Link to comment Share on other sites More sharing options...
Dai Fledermaus Posted December 14, 2012 Author Share Posted December 14, 2012 Thanks fellers, your help is very much appreciated Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted December 14, 2012 Share Posted December 14, 2012 Or you could save some weight & go for mini servos....any servo producing over 2.5 kg.cm torque will be fine Colin..... Quote Link to comment Share on other sites More sharing options...
Andrew Jarvis 1 Posted December 14, 2012 Share Posted December 14, 2012 Posted by Steve Hargreaves - Moderator on 14/12/2012 11:23:46: Or you could save some weight & go for mini servos....any servo producing over 2.5 kg.cm torque will be fine Colin..... I don't think there would be any point, the Tyro was designed in the days when radio gear was big and heavy, it will do perfectly well with standard modern servos. Quote Link to comment Share on other sites More sharing options...
HughMcQ Posted May 6, 2016 Share Posted May 6, 2016 More advice on servos needed, please. My 40 - 50 engined sports models (nothing high speed or 3D !) have separate servos in each wing. Standard servos fit but seem very heavy so far out on the wing. Would JR 375s be OK? They're only 9g, but have 2Kg torque which seems enough to me for a single aileron on a club-type model. Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted May 6, 2016 Share Posted May 6, 2016 Hugh, while in theory the 2Kg micro servos would probably cope, you need to bear in mind that most servos seem to get damaged fitting the model in and out of the car or the house. Those 9gm servos only have small gear trains to fit their cases, so they will strip with just a gentle knock on the control surface. If you want to go for smaller servos try mini size - 18-25gm, preferably with metal gears. I have used Corona 339MG and similar on the ailerons of 60 size models but don't really think there's a worthwhile advantage over standard (322, 3003 etc) size servos. Quote Link to comment Share on other sites More sharing options...
Former Member Posted May 6, 2016 Share Posted May 6, 2016 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Andy Green Posted May 6, 2016 Share Posted May 6, 2016 I'd add, buy from a reputable model shop, there are plenty of fakes out there. Andy Quote Link to comment Share on other sites More sharing options...
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