Jillian Powell 
Rollercoaster [PDF ebook] 

Gus, Ricky and Sam have been saving up for a ride on the Devil Dipper for a month. When they are refused entry, Ricky thinks up a plan to make it happen. The boys have the ride of their lives. But can they escape the clutches of the monstrous rollercoaster, as it turns out to be more than they bargained for? The Full Flight Impact series covers themes such as football, basketball, rollercoaster mayhem, aliens and futuristic worlds, ancient Rome and Blitz England. The stories, poetry, plays and non-fiction have been carefully crafted for reluctant readers aged 8-14 with a much lower reading age; their features include a contents page, illustrations, short sentences and line breaks.