I have been contemplating radio control for some time now. After reading about the DelTang system I decided to give it a try. I have converted two of my critters and am very pleased with the way they operate. Installation was much easier than I had assumed. The first picture is a mock up of components and wiring.
The first critter converted and DelTang transmitter Tx22 which handles 12 models.
Wanting a self contained unit I chose the option of using a single LiPo cell (3.7 volts) and a 9 volt regulator to boost the voltage. With my small critters space was an issue and a single cell was able to be installed without having to put the battery in a wagon behind the critter. Space limitations also inspired me to look for a way to eliminate the need for an on/off switch and charge jack. The roof of the critters are supported by two posts. I was able to replace the posts with brass tube. I cut the tube to have a bottom section attached to the critter base and a top section attached to the roof. I passed music wire through the top section to enable the top section to "plug" into the bottom section. I then installed the battery under the roof wiring it to the music wire. removing or installing the roof then becomes the switch.
I installed a 200mah battery in the first and a 250mah battery in the second. There is room to install larger cells. I just need to look around and find the largest capacity that will fit. I ran the first critter for 31 continuous minutes at over half throttle (faster than reasonable for normal operations) before the low voltage cutoff stopped it.
The charge connection I came up with was simply attaching a charge wire to two small brass tubes which plug onto the roof supports.
The last picture shows the underside of the critter. The roof support brass tubes extend through to the bottom. Wires run from them to the voltage regulator. The regulator is wired to the receiver which is in the white wrap. Wires from receiver are connected to the motor.
I am looking forward to converting several more in the future.