We have finished building the Tachyon sustainer this week, and pressure tested it up to 130 psi.
We wanted to fly it during this long weekend, but due to the heavy storms here in Sydney we were unable to. We had wind gusts of up to 100km/h, huge seas with up to 15m (40 foot) waves and drenching rain. Our local park had quite a bit of standing water on it, so it was unsuitable for launching as well. We will fly it at the next opportunity.
Meanwhile we have been continuing with the staging mechanism on Acceleron III, and plan to continue with it tomorrow.