From the latest TT article:
"TH13TEEN is remaining closed since social distancing requirements mean the minimum passenger weight to run cannot be reached"
Can anyone clarify what this means? Empty trains can still run can't they so why not the same with reduced pax numbers?
TH13TEEN can either run empty, or with a minimum of 18 riders. It's all to do with the trim brakes around the circuit. The ride system recognises whether there's guests on the train or not, so if it's empty then the trim brakes won't activate and it will complete the course. However, if there's guests on the train then the trim brakes will activate which stops the train overspeeding onto the second lift hill, which was the main reason for the unreliability of the ride in its first year. If there's less than 18 people on the train, it won't have enough momentum to get to the second lift, and will stall.
It's a huge design flaw which was re-actively added to solve an issue that shouldn't have presented itself in the first place.
So yes, it's either completely empty, or ran with 18 riders or more. There's no inbetween.