Buffer/Array - Safe Application That Contains 3 Threads - Data Acquisition And Decoding - Data Graphing - FFT And Filtering

I am trying to write a thread safe application that contains 3 threads : -

1 - Data acquisition and decoding
2- Data graphing
3 - FFT and filtering

Thread 1 is collecting bytes from the serial port and converting them int integers (so taking two bytes) after is has captured 64 Bytes and converted into 32 integers, it then needs to pass the array to the graphing thread.

The graphing thread then plots the data and waits for more data.

Thread 3 also waits until thread one has collected 2023 integers and takes these and performs some FFT calculations (which take time).

My question is how do i share the arrays between the three threads without deadlocking the program? as the serial thread will be flying around reasonable fast (1000 bytes per second) so it will synclock onto the shared buffers for most of the time.

Originally i was going to use two synchronised queues, so when thread 1 has collected 32 bytes it queues the data into the graph queue, and once it has collected 2023 it queues the data into the FFT queue.

Then thread 2 and 3 can simple dequeue the data.

However using queues has the overhead of casting the data in and out, and as i know the data type i was planning on using two arrays :-

Dim GraphArray() as ushort
Dim FFTArray() as ushort

Then Thread 1 adds data to each thread, and thread 2 and 3 simple wait until the correct amount of data is available before removing the data. my question is there an array type that allows me to remove x amount of data from an array?

Because i cannot do this easily with the ararys defined as above (GraphArray, FFTArray), as i was planning on making them 1mByte and allowing thread 1 to fill them Knowing they should never overflow and then let thread 2 and 3 remove x amout of bytes at a time unless there is a better way of doing it