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Update on Inverted Knex Coaster-Airoback

knex coaster inverted

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#41 The Stig

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Posted 04 March 2011 - 07:57 PM

I think the crest and turn look fine.

If you have enough pieces, make a catwalk for the lift. It'll keep your supports stable.


#42 Blackkitty

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Posted 04 March 2011 - 11:43 PM

Guys, I think we should stop being this harsh on him. He's new, and this is his first coaster. If, you don't have enough space to make the pullout larger, cancel this. It would look terrible with such a small pullout. Also, I would suggest using boxes first just to get a general feel for shaping, suporting, etc. Also, starting with an invert is hard also.

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#43 sdrawkcaBsihTdaeR

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Posted 05 March 2011 - 09:46 AM

Guys, I think we should stop being this harsh on him. He's new, and this is his first coaster. If, you don't have enough space to make the pullout larger, cancel this. It would look terrible with such a small pullout. Also, I would suggest using boxes first just to get a general feel for shaping, suporting, etc. Also, starting with an invert is hard also.


Got the space to make the pullout larger: Posted Image

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#44 Justin

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Posted 05 March 2011 - 12:09 PM

Tbh i think this has potential just make the tubes stronger Its well shaped though keep it up!
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#45 sdrawkcaBsihTdaeR

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Posted 06 March 2011 - 11:47 AM

Here's the Airoback Coming Soon sign I finished today:Posted Image

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#46 SwimZONE

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Posted 06 March 2011 - 12:00 PM

The pullout is too small. It looks like it's something from RCT, which is not very realistic. Otherwise I like the tube supports, that adds a touch of realism every time.


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#47 -=TK=-

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Posted 06 March 2011 - 02:37 PM

Make the pull-out at least twice as big. Then it'll be good!

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#48 sdrawkcaBsihTdaeR

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Posted 09 March 2011 - 08:09 AM

O.K. , here's the next update: the loop, I think the pullouts long enough:
Posted Image
Test vids:
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#49 Maxlaam

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Posted 09 March 2011 - 08:18 AM

O.K. , here's the next update: the loop, I think the pullouts long enough:


I think its funny how you doubt people's advice who have years of experience with building. But sure, continue if you wish ;)


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#50 The Stig

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Posted 09 March 2011 - 10:22 AM

The loop could be bigger, right now it's going through it way too fast.
Other than that, you did a nice job with supports. Your cars look nice, too. I like them.
Just be careful with that lift. I thought the whole coaster was going to come down in that first video.


#51 WardCoastez

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Posted 09 March 2011 - 11:41 AM

i think the loop is fine. it shakes like other tube supported loops so idc that it shakes a little.
I dont think that the loop must be bigger, inverted loops always look a little too small.

great work on the loop!

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#52 Aaron

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Posted 09 March 2011 - 11:50 AM

The loop looks wonderful, but you really need to lengthen that pullout. You are probably losing a lot of speed with the one you currently have. So, perhaps make it at least two grey rods longer. Good job though.

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#53 -=TK=-

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Posted 09 March 2011 - 11:56 AM

Nice tubes, try to add some cross-braces, that'll make your coaster even stronger. If you want, make the loop and the pullouts a bit bigger eventhough you said that you didn't want to do that, but it it such a small thing to fix... For the rest it looks good!

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#54 sdrawkcaBsihTdaeR

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Posted 09 March 2011 - 04:57 PM

The loop could be bigger, right now it's going through it way too fast.
Other than that, you did a nice job with supports. Your cars look nice, too. I like them.
Just be careful with that lift. I thought the whole coaster was going to come down in that first video.


That was because the train hit the crosstie that stopped the train from falling to the ground.

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#55 CCI

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Posted 09 March 2011 - 05:03 PM

The pullout is way too small!

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#56 alpal

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Posted 09 March 2011 - 05:27 PM

Yeah, the pullout could have been longer, and loop could be bigger, and the lift supports stronger, but who cares. It is your first coaster. just have fun.

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If only I had more space/pieces/time.


#57 sdrawkcaBsihTdaeR

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Posted 10 March 2011 - 11:13 AM

I have just made the pullout one green metallic rod bigger, but I don't have the pic yet. (one metallic rod is about an inch shorter than two gray rods put together end to end without the ladder connector)

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#58 The Stig

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Posted 11 March 2011 - 01:07 PM

Yeah, the pullout could have been longer, and loop could be bigger, and the lift supports stronger, but who cares. It is your first coaster. just have fun.


Well said. That's probably the best advice given so far.


#59 A.S.C.

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Posted 11 March 2011 - 03:56 PM

That was because the train hit the crosstie that stopped the train from falling to the ground.


Um, Im pretty sure he meant the one with the loop when you yanked on the chain to get the train to move.


#60 sdrawkcaBsihTdaeR

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Posted 11 March 2011 - 06:52 PM

O.K., I have finished the taller loop (finished loop not shown in update,the same video from Youtube)
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