Try http://www.sscoasters.net/ . I built a custom Knex coaster with help from that site last summer. E-bay is your best friend for Knex sets. Screamin' Serpent is the "basic" roller coaster set and Rippin' Rocket is a roller coaster set with 2 boosters. Those would be perfect for your tunnel launch. I would do a chain lift for the first hill though. This guy has some good odds and ends if you need specific Knex parts: http://stores.ebay.com/KNEX-Building-Toys-Parts-and-More . You could e-mail him. He might be able to get you a couple of boosters to buy. You also might want to get some AC adapters for the boosters so you don't use up lots of batteries if you plan to run the model a lot. I would like to see some pictures of it too.
*** Edited 7/17/2007 2:59:38 AM UTC by cdrptrks***
Four discount funday tickets to Cedar Point: $130.96
Overnight stay at Breakers Express: $70
Riding rides the size of skyscrapers while "legally" breaking the local speed limit: Priceless
I am currently bidding on another Screamin Surpant at www.ebay.com . I lookes for a motor and they did not have one.
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