JJ73 Posted Tuesday at 18:06 Author Share Posted Tuesday at 18:06 Thank you RB51 @ Going Spare :- Even thou I haven't used my Scalextric in many years - I do believe that the Scalextric Cars do use a different Motor than the Motors in the Locos I think, so it is differcult to say really!!! 🤔🚂 Link to comment Share on other sites More sharing options...
What About The Bee Posted Tuesday at 18:10 Share Posted Tuesday at 18:10 (edited) Going Spare There are entirely too many variables to determine why the voltage on one is higher that the others. Friction and Stiction in motor/mechanism Cogging of motor Cleanliness of track / wheels / commutator / brushes As JJ points out, different motor = different characteristics, like nominal resistance What JJ's questioner wanted was the base voltage of the controller, with a locomotive on track, slow speed. That fellow is looking for the best controller to get slow speed and thinks this is the way to find it. Bee Edited Tuesday at 18:20 by What About The Bee Two, to, too Link to comment Share on other sites More sharing options...
atom3624 Posted Tuesday at 19:42 Share Posted Tuesday at 19:42 (edited) Hi JJ, both Scalextric / slot cars and model railways require reliable motors, but there's a fundamental difference. Slot cars require more revs and generally rely on motor reliability at a reasonable to higher revving rotational speed - standard are I think 18k (rpm) maximum, but can nearly double that (I've had a few 25k motors which were quite fun!!) Model railways do require a designed in calculated speed, but this won't be huge. The important thing for railways is torque - turning force - and from low voltage / low revs, to permit nice, realistic-looking departures from stations. Obviously gearing can help here - it's been said Britannia, Castle, King locomotives might be a little too high-geared, compromising their low speed performance. A little creativity I find on the throttle overcomes this generally, leaving you with an impressive express passenger locomotive! Al. Edited Tuesday at 19:44 by atom3624 Link to comment Share on other sites More sharing options...
JJ73 Posted Wednesday at 20:24 Author Share Posted Wednesday at 20:24 Opps - I forgot to say - I did make a video of this in the end & here is the link of it :- 1 Link to comment Share on other sites More sharing options...
What About The Bee Posted Thursday at 01:20 Share Posted Thursday at 01:20 In your video, you said that you were not sure what the numbers VDC meant. I made this diagram up to help you to see the meaning. Study it and see if it helps Bee 1 Link to comment Share on other sites More sharing options...
JJ73 Posted Thursday at 01:46 Author Share Posted Thursday at 01:46 Ok Thanks Bee - In either direct ( minus - or plus +) Higher VDC - faster the Loco goes - well that doesn't seem to difficult to understand... SIMPLES!!! 😉🚂 1 Link to comment Share on other sites More sharing options...
What About The Bee Posted Thursday at 01:51 Share Posted Thursday at 01:51 You got it JJ! Link to comment Share on other sites More sharing options...
What About The Bee Posted Thursday at 03:58 Share Posted Thursday at 03:58 Hi JJ, This is the next step. Here is what Alex was asking. He wanted to know what your controller does in the little blue circle, when the VDC is small. Your testing shows when motion starts. Notice your numbers are all above 1.5 VDC? The locomotive starts moving when the VDC is high enough. But the video also shows the lowest VDC your controller can make. It is around 0.3 VDC. The reading does not go 0.0, 0.1, 0.2, 0.3, 0.4, 0.5 on the meter. It goes 0.0, 0.3, without showing 0.1 or 0.2. This is the dead zone. You should do the test again. Set your vertical slide bar to 5 instead of 20. This means no more than 5 VDC. NEVER GO ABOVE 5 VDC. Slowly, really slowly turn up the controller. What is the smallest VDC you can get? Stop before you reach 5 VDC or you can ruin your meter!! Bee Link to comment Share on other sites More sharing options...
JJ73 Posted Thursday at 19:55 Author Share Posted Thursday at 19:55 There is a next step??? 🤔🚂 I thought that I'd finished it!!! Link to comment Share on other sites More sharing options...
What About The Bee Posted Thursday at 20:51 Share Posted Thursday at 20:51 Hi JJ You can get better results You can also learn more about your meter Only do it if you want to Bee Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now