11 replies to this topic

[Big Builder]

Hey everybody im in a very good mood today cause

i just got the rippin rocket. This means i now have 2 roller coaster sets. My first

project is the screamin demon. THe lift will be 6 ft (4ft right now

because i havent finished the lift yet). anyways ive never built a coaster this big before

so i have a few questions.
1. since the lift hill is 6 ft i am using the electric

k'nex motor. will there be a problem with the amout of power needed to pull the

train up?
2.Inversions i need a few and i cant decide. One inversion i know im

using is a cobra roll but after the first half the cork will go the other way so you leave

the same direction u enter.(im not sure wut this is called)
wish me luck and

please give me hints for a beter design.

[nitro9003]

It's a cutback unless it's more vertical

than corkish. Then it would be an inverted top hat.

[Big Builder]

This is the inversion i was talkin bout. I dont know if

there is a real coaster with this inversion so i just made it in rct2. Look at the image.

[Westside7th]

Originally posted by nitro9003@Dec 27 2003, 09:01

PM
It's a cutback unless

it's more vertical than corkish. Then it would be an inverted top hat.

No, he is talking about a Sea Serpent.

It is like a cobra roll with 2 inversions but the second corkscrew goes in the same

direction as the first so the train ends up travling in the same direction as when it

entered.

Medusa at SFMW-Sea Serpent

To answer the

question about the lift, the motor might be able to get the train up, it depends on how

steep the lift is mostly and how heavy the train is. My coasters usually can't use

the motor because I have custom cars that are heavy and my lifts are steeped then 45

degrees. The K'NEX motor probably can haul the SS train up 6 feet no

problem, even with a vertical incline. With only 2 sets and a 6 foot lift, be careful with

pieces and track, you can run out quickly if your not careful. Some inversions you

could use are barrel rolls, corkscrews, vertical loops, inclined loops, cutbacks, dive

loops, immelmans, etc. Go to rcdb.com and go to their Element Cross Reference to

look at costers with different inversions.

[nitro9003]

I was just about to say that, but apparently

Westside7th beat me to it.

[Big Builder]

Ok thanks the lift angle is 45 dgrees. And im not using

custom cars just the ordianary ss cars. As for 6 ft. It is only 5ft. 4in. now The top of

the hill is finished i now need to make the first diving turn.

[Da Squriel]

well the knex gray motor pack is as strong as 3 ss set

motors i usally use 2 or 3 motors on my models because it is faster and dosent were

out the same good luck have lots of fun.

[Big Builder]

Ok update lift complete and ive mde the first right hand

diving turn. The turn goes down only half way to the ground. then a barrel roll right

uder the lift then..... well so far thats it. LOL P.S. if your wondering i dont have a

digital camera yet so i will just take normal photos at the end then scan them with my

scanner.

[coasterguy]

well the

knex gray motor pack is as strong as 3 ss set motors i usally use 2 or 3 motors on my

models because it is faster and dosent were out the same good luck have lots of

fun.

actually haveing more than

1 motor doesnt make the lift faster, just less prone to stopping or slowing. if you used

different sized gears you could make it faster, but it will keep wear and tear down.

anyway i hope to see some pics of your coaster soon, sound pretty good

[FunkMaestro]

Yeah it does, let us see some pictures!

[Big Builder]

Ok small update. Ive decided im not going to cut the

rippen rocket tubing because the ss set tubing is already cut. I finished enough track to

come to the end of the rr tubing. THe end of the track right now is near the

station....... but im very ambitious and everythings going acording to plan so guess

what...... its going to be longer. I am streching 2 sets for all there worth. lol You may

think its silly to make it bigger but to not cut the tubing i have a special way of doing

the last part of the ride. Anyway since you want a pic ill try to take one P.S.

somethings wrong with my digital camera cause everythings yellow but you will still be

able to see it.

[Big Builder]

86 those update photos . The thing wont work.

Anyway i guess you will just have to use ur imagination till i take normal pics then

scan them.