Are my voltmeter readings expected for a correct chua's circuit?

I am following this article Robust OP Amp Realization of Chua's Circuit by Kennedy to implement a Chua's circuit. I use exactly the same design as the article; the only difference is that I use a 15mH inductor instead of 18mH.

I have finished the circuit, but I don't have an oscilloscope at the moment, so I simply connect a voltmeter across C1(see diagram below). Since the voltmeter can only read the average value across a period of time(that should be approximately the value at the center of a "scroll" in the diagrams below), I cannot see the wave pattern of oscillation. I believe that the reading of voltmeter should be the value at the center of a scroll on the oscilloscope.

when I connect the voltmeter, I observe the following:

1. As I decrease $$R$$ from $$2k\Omega$$ to $$1.1k$$, the reading of voltmeter decreases.
2. When $$R=2k\Omega$$, the voltage across C1 is $$6V$$, but this quickly decreases as $$R$$ decreases. When $$R<1000\Omega$$, the p.d. is less than several hundred $$mV$$s
3. If $$R$$ is kept constant, then voltmeter readings are stable: changes only appear to the 3rd decimal place.

Are those observations expected for a correctly implemented Chua's circuit? Or are those observations indicating that something is wrong?