Zappatime Posted January 23, 2011 Share Posted January 23, 2011 Giles - Thanks for replying and the latest vid; will look forward to seeing it running one day in a layout setting especially via your operating tippers! Link to post Share on other sites More sharing options...
Franco Posted February 11, 2011 Share Posted February 11, 2011 Hi Giles, First of all congratulation for your model, I'm new to this forum and, beside this, quite a dummy for whatever concerns "electrics". Anyway I've been thinking about radio control for my locos since longtime, do you have any experience or do you think is possible? Iìm talking of narrow gauge models built on current HO chassis- Thanks in advance Link to post Share on other sites More sharing options...
Giles Posted February 20, 2011 Author Share Posted February 20, 2011 Hi Franco, Thank you! Although it is theoretically possible to do so, it might only be practical to radio control lrger tender locos. This is because the highly miniaturised receivers and speed controllers (that I have come across) are made for the aircraft hobby, and don't have a reverse function - which is vital to us! The only candidate that I found was the Tiny used on this lorry - at £75, and that is only compatable with 40mHz. Fine control on the transmitter is an issue, and I still propose to modify mine........ It would be much cheaper and easier to use 'hacked' servos where possible (and use the higher frequencies) but this means more space is required. Ther is a chap/shop that specialises is RC in 00 diesels who would be worth talking to. Here's the link: http://www.antenna-models.com/OOGAUGE.html Best of luck! Giles Link to post Share on other sites More sharing options...
Scale7JB Posted February 21, 2011 Share Posted February 21, 2011 Absolutely Genius !! Well done..!! JB. Link to post Share on other sites More sharing options...
Franco Posted February 25, 2011 Share Posted February 25, 2011 Thanks for the link, I found it very interesting. Beside many pros there are some cons, first prices are quite high but more than this I'm not so sure that all the apparatus could be fitted so easily in my models and (last but not least) I'm a bit worried about heating, do you have any experience on that? Link to post Share on other sites More sharing options...
bobster Posted February 26, 2011 Share Posted February 26, 2011 Hi Giles. Just read this thread from start to finish - A credit to you - many thanks for a fascinating subject - Well done. Cheers. Bob. Link to post Share on other sites More sharing options...
Giles Posted February 26, 2011 Author Share Posted February 26, 2011 Thank you Bob, it's been interesting to do something a bit different! (and to show that it can realistically be done - without needing to be a high-tech genius!) Franco, I've had no heat problems, I think it would depend on your motor size/current draw/battery size/type. Your battery overheating (through being too small or over-charging) would be the thing to avoid. My little truck had a motor with a very small current draw, and so the small Lipo battery is well able to cope (with no over-heating) and non of the other componants are prone to heat generation at these low powers. Your problem is simply the size, which again is driven by motor size/voltage and necessary battery capacity to cope with it..... Note that the RC gear is happy at about 5-6V, so if you run the motor directly off the same power, you are reducing your speed straight off, if your motor is 12v. (the truck is 3.7 volt) All the best, Giles Link to post Share on other sites More sharing options...
Franco Posted February 26, 2011 Share Posted February 26, 2011 Motors are designed for 12V but often at 9V prototipical speed is easily reached and are anyway enough for me. My concerns weren't really about batteries overheathing but more toward receiver as (I think) will be under a much bigger stress than the one on your truck! Link to post Share on other sites More sharing options...
Giles Posted February 26, 2011 Author Share Posted February 26, 2011 Hi Franco, Don't worry about that - the Micro Tiny has a peak motor output of 1.3A, so as long as the motor is of reasonable size and of lower consumption,, I can't see it will be a problem. Link to post Share on other sites More sharing options...
Franco Posted March 15, 2011 Share Posted March 15, 2011 Stephen. Hi Stephen I came across one of these motor/reductor do you think they are powerful enough for small locos ? Link to post Share on other sites More sharing options...
Giles Posted March 17, 2011 Author Share Posted March 17, 2011 If I may take the liberty of answering - yes- they are very powerful, and will have no trouble at all with locos.... They are geared down so well you have to grip the output shaft quite hard to even slow them. They are remarkable little units! Link to post Share on other sites More sharing options...
bertiedog Posted March 17, 2011 Share Posted March 17, 2011 Hi Stephen I came across one of these motor/reductor do you think they are powerful enough for small locos ? They are extremely powerful, but turning the drive to right angles needs a 1:1 cross helical gear, and they are not common in small sizes. I have powered an O8 shunter with one with 1:1 gears , it s slow, about 10 MPH max , but unstoppable! Various gear ratios exist from 60:1 to 200:1, these were designed to move Zoom lenses focus in cameras. These days Servo motors are now used, rendering these DC motor units redundant, which is why a lot are sold cheaper. The supply may get patchy as time goes on, as no further manufacture of the type is being done now. Stephen. 1 Link to post Share on other sites More sharing options...
Giles Posted March 17, 2011 Author Share Posted March 17, 2011 Someone's got one of these National Coal Board Morris Commercials on ebay at the moment (a few quid as we speak) they don't seem to come up very often, just in case any one was interested... (No connection, by the way) , http://cgi.ebay.co.uk/VANGUARDS-VA07502-MORRIS-COMMERCIAL-DROPSIDE-COAL-/310303968189?pt=UK_ToysGames_DiecastVehicles_DiecastVehicles_JN&hash=item483f8ecbbd Link to post Share on other sites More sharing options...
Franco Posted March 21, 2011 Share Posted March 21, 2011 Thanks both, I saw them sold under the "Graupner" brand at a reasonable price. I'm trying to re-motor an old Lima ring type one in order to reduce its height. No matter about speed as I'm modelling narrow gauge prototypes (or like) in small spaces so there's really no need of going full throttle! Link to post Share on other sites More sharing options...
RMweb Gold Worsdell forever Posted August 16, 2011 RMweb Gold Share Posted August 16, 2011 just followed the link from the road vehicles group and read the whole thing through. Absolutely superb. B) B) Link to post Share on other sites More sharing options...
Popular Post Giles Posted May 27, 2012 Author Popular Post Share Posted May 27, 2012 The latest video - the lorry working on my unfinished layout 'The End of The Line' 27 Link to post Share on other sites More sharing options...
Pyewipe Jct Posted May 27, 2012 Share Posted May 27, 2012 Beautiful on several levels - very convincing operation! Link to post Share on other sites More sharing options...
Mike Posted May 27, 2012 Share Posted May 27, 2012 Outstanding!! Mike Link to post Share on other sites More sharing options...
bertiedog Posted May 27, 2012 Share Posted May 27, 2012 Nice to see the speed range was right in the end, what sort of battery life do you get? It really looks the part now. Stephen. Link to post Share on other sites More sharing options...
leadie69 Posted May 27, 2012 Share Posted May 27, 2012 I just stumbled upon this today and I am blown away! Absolutely spectacular! Ian 1 Link to post Share on other sites More sharing options...
Giles Posted May 27, 2012 Author Share Posted May 27, 2012 Thank you Gents.... hi Stephen - thanks to your help..... That one was 1:100, but I'm still going to try and replace the pot in the transmitter for a better direct rotary one to give more control at the lower end.... Take-offs are a it jerky. I get half an hour or so continuous out of the Lipo, with a recharge time of less than that - so two lorries can work continuously (one on, one off) the second one, I'm thinking about putting a 1:150 box in. Of course, with normal radio gear in a van, you'd get better performance all round! Link to post Share on other sites More sharing options...
RMweb Premium eldavo Posted May 27, 2012 RMweb Premium Share Posted May 27, 2012 Stunning! Cheers Dave 1 Link to post Share on other sites More sharing options...
greenglade Posted June 15, 2012 Share Posted June 15, 2012 top stuff sir! very good indeed Pete Link to post Share on other sites More sharing options...
Brake Compo Posted June 18, 2012 Share Posted June 18, 2012 Utterly superb! Link to post Share on other sites More sharing options...
37114 Posted June 19, 2012 Share Posted June 19, 2012 Excellent thread, thank you so much for sharing this! Link to post Share on other sites More sharing options...
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