Originally Posted by
Roelof
If you are able to solder a new wire then just try to get an antenna wire in this thin size. The local radioshack could help you. On the other hand if we knew the receiver model number we could look with him for a replacement. And yes, using google with "REPLACEMENT ANTENNA [MODEL RECEIVER]" could give some hits or for sure other antenna's you could use to make it fit.
I don't think I would trust putting a piece of Radio shack wire on a receiver that controls an very expensive R/C car. These new receivers i.e. ones made in the last 10 years have a coax antenna that is replaceable on spektrum, however I'm not sure about other brands. Don't screw around and crash a car trying to save $5.Just my 2 cents.