Ethan said:
For example lots of people call Detonator a coaster, which isn't a problem but it does slightly annoy the nerd in me
Of course I might be wrong and there'll be a coaster for 2016!
Hey, with the problems we've had on here defining what actually constitutes a coaster, they may even be right!
As for ride length, discussed above... well, I'm not too experienced with the actual numbers, but we can deduce a few things from the common speculation that it'll be launched. Namely that it is likely to launch at a certain speed (because a launch to, say, 50 km/h isn't terribly exciting), and that if the manufacturers want to do something with that speed, and not just take a turn and slam it into the brakes, the coaster will have to have a certain length.
We can pretend to be scientific here, and assume a launch speed, then check out similar coasters of the same top speed, and then measure their length according to RCDB. It's a very crude method, but it seems like the industry is surprisingly consistent with it comes to speed/length relations of woodies.
For instance,
assume a launch speed of 80 km/h (133 620 furlongs per fortnight). According to RCDB, most newer woodies of that speed have a lenght of 800-1000 metres (2667-3333 metric feet), with a surprisingly small deviation. If the speed drops to 70 km/h (83881 horselengths/microcentury), the lenght range seems to be 650 - 850 meters (0.46 - 0.61 sheppeys). Unless Alton's woodie is an oddball in that department, we can assume it to be similarly long. Or, well, a couple dozen meters could be subtracted, since trigonometry dictates that a lift and a drop required to attain that speed includes more track than a straight, flat launch.
So yeah, try speculating a launch speed, and you can get a very rough estimate on the length too. At least for a traditional woodie layout. It may be that a launch layout is a little different.