No answer yet to our radio production problem but I hope to have it sorted early in the new year.
Meanwhile I have been trying out new ideas with a view to implementing these into the new production.
I have been looking at more easily available batteries, preferably ones with protection circuits and one
possibility is the RCR123, popular in cameras etc. Having built a couple of prototypes, I was pleased with
the run duration of over 40 minutes (not counting the coffee break needed half way through). As my
10440 cells were all ancient, I had ordered a new batch of the usual Trustfire blue unprotected some time ago
and they arrived today. Testing these against the CR123s would be a good excuse for a play I thought.
Amazingly,after 45 minutes, the car was still lapping at race speeds and, with my fingers frozen to the
controller, I decided to call it a day. 45 minutes on Linford 2 circuit equates to around 225 laps and 3025
route changes (lane and racing line). The coil steering actuator uses approx. half the current so, with a more
efficient coil, even longer runs would be possible.
So not much point in looking at a larger battery then!
One other small improvement I have been working on is body mounting. The triple magnet idea is easy to
adjust and instant to fit and remove. Under racing conditions however, a more robust method in needed.
The car shown, still covered in dust after it's 45 minute run, has a horizontal peg at the front in lieu of the
usual magnet. This is very positive and also allows the chassis to flex slightly.
![Circuit component Passive circuit component Technology Electronic device Engineering]()
Other pic shows the CR123 battery. This is slightly shorter so the chassis can be narrower. The chassis is
adjustable for wheelbase.
![Tire Automotive tire Wheel Vehicle Car]()
