I'M NOT TRYING TO SEND AT THE SAME TIME with both nRF tx's ,
I don't think I am the only person who thought you were trying to send from both at the same time,
I am not sending a specific message a RC car will not accept a resended package
I don't understand that. Why won't it accept a re-sent package? What happens if it receives a re-sent package? Why can't you program it so that it can accept multiple copies of the same message.
because it's not something you need to resend but you need to keep sending same new and new data not the old one.
I don't understand this. If you never resend a message how can the receiver ever receive it if reception conditions are difficult.
I got 2 TX, and I send only one package a time per transmitter, using 2x atmega chips connected thru I2C I combine the nRF's to transmit both one package a time not both in the same time.
Why can't you put the two nRF24s on the same Arduino? Wouldn't that make the programming much simpler?
Developing and debugging wireless systems can be very tiresome. I find it very useful to write an essay for myself that describes the process in detail. For me that makes it clearer when I have overlooked some important feature or when I am making silly assumptions about the sequence of things.
IMHO it is also important to write code that does something that can be verified easily, and to develop things step by step. I know of no method to design a system that will automatically work in difficult circumstances - it needs to be tested and verified. I do understand that that can be difficult for long range communication.