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Posted
On 7/30/2018 at 8:42 PM, Seasider said:

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first I worked out the curve for the end with a good old fashioned pencil and paper.

Just a quick suggestion: you can use MS Paint (or similar raster based drawing program) to convert a circle into LEGO studs. The curve you need seems to have a radius of around 30 studs, so you draw a circle of 60*60, zoom in, and the pixels tell you exactly what you need to build.

Posted (edited)

Bit of an update. Managed to get an hour to play with last night, so thought I better work on the cars. First task was to get the wheels more to the corners (better stability) and then get our man seated. Not too sure how happy I am with the end result.

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Edited by Seasider
Posted
25 minutes ago, pagicence said:

If you are not totally happy with the car, maybe you can make it so that the rider seats lower in the car. Perhaps 2 studs lower, and the backrest should not be higher than the front black panel. Also ditch the beams on the side and use 3x5 curved panels, or something similar. But keep the front angular shape.

If you don't have enough room for the wheels, maybe you can try with 32474 ball or 64276 (it's easy to connect) or similar. But I don't know how much friction you will get and whether will operate smoothly.

Its sitting on 4 x 42610 Wheels (11mm dia) attached to the 92907 Split Connectors so the wheels are acting as trolley wheels like the real ride. i'd love to get it a stud lower for the seat but I can't see that happening.

I've thought about using curved panels for the sides but I was running into shoulder width problems.

The main thing i want to fix is the grey connectors and i have a plan for that

 

 

  • 2 weeks later...
Posted

A big update for you all ...

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the track is now complete and so are most of the cars ... one missing, guess the colour?

I’ll leave it up to you to work out the size of this thing!

Now just to work out how to hide the motors and stiffen the gears a bit to stop them from slipping. Going to be tight to hit the deadline given work and family commitments but I’m not giving up!

 

 

Posted

This is turning out to be pretty great, really. I like the swooping motion of the cars around the ends of the track. Looks like a fun ride! (I also like how the number of cars is odd, so that alternately there's one on the left end and then one on the right end. The asymmetry adds to the flow of the motion. Also, it looks like indeed your curved track has exactly the right size.
Although I'm not sure what the springs are for, but if they are in the real ride I'm sure they have a function there.

I'd say the missing car will be lime :)

One question though. What're you going to do with all those panels when the competition ends? :laugh:

Posted

Yes the missing car is LIME.

The springs are part of the mechanism to swing the cars out, I copied the actual mechanism on the real ride. I’ll make sure I take a picture to explain all the movements in the mechanism.

I’m hoping TC15 is “Who can build the biggest box out of light grey panels” ;)

I’ve still to try it with some Technic Figures in the cars and work out the optimum speed, hopefully I can get a good Whip motion and they don’t go flying!

  • 3 weeks later...
Posted (edited)

So the build is done ... I haven’t counted the number of Grey 5x11 panels but I can also tell you my 3L blue pin tray is also quite empty!

During the “run in” this week I rebuilt the central black frame completely. Rebuilt the drive mechanism 4 times! But surprisingly the hut and fence came together quickly.

Hope you enjoy it

Edited by Seasider
Posted

Just updated the video slightly ...

and realised I forgot to include the control booth in my dimensions!

 

Here’s some photos of the final model

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I made it modular

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I was determined to get the mechanism as accurate as possible to the real ride

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including putting 4 caster wheels on the bottom. This also helps create the right noise for the ride.

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Simple friction is used on the safety bars

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The drive track is located in a channel as I found it wandered on the drive wheels.

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Hope you all liked the final model.

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