Hello everyone, my name is Corwin (Corbs). I was hoping someone could help me with some issues I've been having with my DelTang Rx61-22-W.
The loco has been butchered a lot, but the essence is a Hornby 'Pug' chassis, now with a 3v motor fitted. It uses a 1s LiPo battery. I use a Tx22 controller. It has a few problems. Firstly, it takes so long to synchronise the Rx with the Tx. They seem to constantly forget each other. Whilst it has a solid light to indicate they are in synch, there is no response to any input from me. I have to switch them off and re-bind the Tx to the Rx, sometimes multiple times. Then, often I will only get a short period of responsiveness before the motor stops responding to controls and just keeps going of its own accord and won't stop until it's switched off. Are these two issues related? The binding problem was there before I changed the motor to a 3v one. The aerial snapped off the Rx some time ago, could this be part of the issue?
Corwin, The video shows what seems like correct operation to me. If the Rx and Tx are new the Rx should have 11 and 13 written on it by hand. If older then let me know please. Assuming the products are not old, locking up one way and not the other suggests either a hardware weakness in the Rx when used in reverse or that the motor draws more current in that direction and the Rx cannot cope. If you reverse the physical connections to the motor it could help diagnose which. It may also be helpful to observe what the led on the Rx does when it locks up. Also try to replicate the fault off the track. Regards, David.
Hello David, thanks for the response. The Tx and Rx are about 2 years old (I think), I did not notice anything written on it.
I'll try reversing the connections as you suggest. When it locks up, I think the LED on the Rx shows a solid green light.
The fault does indeed occur off-track as well.
Last edited on Wed Nov 29th, 2017 10:03 am by Corbs
Motors do not really have a voltage rating other than that a "3 V motor" will run ok on 3 volts. Most of my models run on 2.5 V but have a motor that is rated for 6 V (in a RC car). The motor runs fine on either voltage, just faster on 6 V than on 2.5 V. Slot car motors run on 12 V but most would probably be rated for much less. Anyway, your 3 V motor will run faster and have a shorter life on 3.7 V but should still run ok.
Is it possible that in reverse the motor draws enough current to lower the battery voltage to where the radio is not getting enough voltage and stops responding?
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