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Update on Inverted Knex Coaster-Airoback

knex coaster inverted

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#21 -=TK=-

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Posted 27 February 2011 - 09:57 AM

Pretty good, but make sure that the pullout is a LOT bigger.

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#22 Maxlaam

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Posted 27 February 2011 - 11:02 AM

Jep, that's a very tight pull out. Make a shoe collector bin underneath so people can retrieve their shoes afterwards ;)

You have a very long tube underneath the lift going up. Maybe if you can connect them to the other lift supports the overall structure stability will increase.


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#23 alpal

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Posted 27 February 2011 - 01:37 PM

I definitely recommend making that pull out longer, like this:
http://www.wsu.edu/~sarek/raptor.jpg

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#24 Sniggeh

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Posted 27 February 2011 - 02:32 PM

The pullout would make rider's legs blow up (not really, just making an example). Please try to make the pullout larger.

.

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#25 sdrawkcaBsihTdaeR

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Posted 27 February 2011 - 04:15 PM

I definitely recommend making that pull out longer, like this:
http://www.wsu.edu/~sarek/raptor.jpg


i can't because i don't have that much room in my living room.

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#26 sdrawkcaBsihTdaeR

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Posted 27 February 2011 - 04:20 PM

Sorry guys, I can't make the pullout longer because of limited space. :(

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#27 Jumpge

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Posted 27 February 2011 - 05:40 PM

I know you have limited space, but you can always modify the layout. If that drop remains the same, you will loose all of your speed in your layout right there, and have a very short layout on your ride. I highly suggest making it longer.

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#28 Blackkitty

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Posted 27 February 2011 - 06:09 PM

How do you not have enough room? It looks like you have plenty of room. IF you cant make the pullout any bigger, either make the drop smaller or the whole coaster shorter.

Also, for that chaindog, you can also just use a rubberband.

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#29 sdrawkcaBsihTdaeR

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Posted 27 February 2011 - 09:29 PM

O.K.,here's the new updated drop I finished today:Posted Image
And the original drop near the left side of this picture:Posted Image

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#30 Turtle Man 24

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Posted 27 February 2011 - 11:57 PM

I see a straight spot near the beginning of the drop.


#31 Kevyn230

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Posted 28 February 2011 - 02:55 AM

I still think that the pre drop and turn after the lift needs banking because it looks like it is banked the other way...


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#32 Jogumpie

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Posted 28 February 2011 - 08:04 AM

I'm afraid you don't see that your tube supports are extremely weak.


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#33 sdrawkcaBsihTdaeR

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Posted 28 February 2011 - 08:17 AM

I'm afraid you don't see that your tube supports are extremely weak.


i used these kinds of tubes:
tube tutorial: YouTube - Knex - how to make tubes

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#34 Jogumpie

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Posted 28 February 2011 - 08:47 AM

Perhaps you should read into trusses, triangles and their structural properties.


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#35 The Stig

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Posted 28 February 2011 - 09:41 AM

Sorry guys, I can't make the pullout longer because of limited space. :(


Maybe you can make the drop smaller: http://cache.rcdb.co...21a681u4000.jpg

You can have it drop to the floor after your next inversion.


#36 -=TK=-

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Posted 28 February 2011 - 10:47 AM

i used these kinds of tubes:
tube tutorial: YouTube - Knex - how to make tubes


Maybe you did use our tut, but you didn't make them good. You have to use 7 rods tubes, not 4 rods. Please look better when you make them ;)

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#37 sdrawkcaBsihTdaeR

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Posted 28 February 2011 - 07:36 PM

Maybe you did use our tut, but you didn't make them good. You have to use 7 rods tubes, not 4 rods. Please look better when you make them ;)

-=Tk=-


I used 6 rod tubes, not 4, guess you couldn't see the whole tube from that angle.

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#38 sdrawkcaBsihTdaeR

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Posted 01 March 2011 - 06:35 PM

Here's the new banked turn:Posted ImagePosted Image

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#39 RollerManiac

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Posted 01 March 2011 - 07:20 PM

^Then make it a turning pullout. That's way to small. Other than that it's looking great! And as most people know; I'm always willing to unique create layouts for people. I could make you a nice one that would fit in your space and experience.

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#40 Eggo

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Posted 03 March 2011 - 07:09 PM

Wow, nobody noticed the lift isn't straight? And that the crest is too sharp?

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