Possibly, the sand does cause them problems. Only thing is people are saying that Blue Fire & Helix feel exactly the same.I know this is a long shot, but, could it be anything to do with the clue-proximity of the beach and sand? Maybe a different texture that's coating the tracks could potentially be causing vibrations/pumps?
Manta's a B&M though.Only newish Mack I've ever ridden is Cobra's Curse at BGT, and I don't remember that having any sort of rattle to it at all, so I'm hoping that Icon is the same in August. It must be subjective as to whether you feel a rattle or not, though, because Andy Rumney said that Cobra's Curse "rode like a shopping trolley like all the other Mack coasters". Also, I found Manta at SeaWorld Orlando to have a noticeable rattle, and I think I'm one of only two I know of who thinks that!
I found the rattle to just be a noise, rather than actually affecting the ride experience. I don't think it's an issue really, anyone heard some of the noises The Smiler makes? :emoji_astonished:
I know, I was just using it as an example of a coaster I'd ridden that I thought had a rattle.Manta's a B&M though.
Intamin Colossus clones aren't exactly well known as being smooth rides, are they?Go and try Altair at Cinecitta world. I rode it the 2nd year it was in operation and it was rougher than SAW or Smiler. Typical Intamin.