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Messages - mathsboy314

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Project Progress / Re: Bottle Flipper Progress
« on: February 13, 2018, 04:26:42 am »
Why do you have two yellow gears? Is it for strength?

Project Progress / Re: Bottle Flipper Progress
« on: February 11, 2018, 03:25:15 am »
The dual alternating axles might not be what you need for this machine. If I understand correctly, the motor only turns the machine in one direction, but when the motor is not connected then the machine can reset. If that is the case, check out the lift in this ball machine:

Can you show us a picture of the machine from a different angle?

Project Ideas and Help / Re: [Request] Trebuchet
« on: December 23, 2017, 01:14:52 am »
I'd like to see that! Can you give a link for instructions/videos?

Project Ideas and Help / [Request] Trebuchet
« on: December 18, 2017, 03:09:46 am »
I've been working on a mechanism that engages/disengages a motor, and I realised that I could use it to reset a trebuchet.
A trebuchet could be used to throw a ball with the use of a heavy counterweight.
Does anyone have instructions for a trebuchet that can be used for a lift (or element) of a ball machine?

Project Progress / Re: Window of Opportunity Ball Machine
« on: November 13, 2017, 04:08:51 am »
I can't find an example of what you're talking about. Could you maybe show me a screenshot or tell me the timecode on the video that you're looking at?

Project Progress / Re: Window of Opportunity Ball Machine
« on: November 11, 2017, 11:43:33 pm »
When you say "flat base" are you asking about the white floor that the ball goes on or the frame that holds the white floor?
The frame should be flat on the ground, and the white floor should be on at angle. The only reasons I can think at to why your white floor would be flat is:
  • You know that the ball's momentum will direct it to a certain side of the floor
    (sort of like a path but nothing keeps the ball on the path)
  • Your bedroom floor is not flat
  • You're making the floor from Sandro's Elysium
The white floors that look nice are often at a very subtle angle, enough to get the ball to a certain point on it.

General Knex Discussion / Re: Found this today at a local Thrift Store
« on: November 05, 2017, 02:05:34 pm »
TIL Knex also makes micro gears.

Project Ideas and Help / Ball machines that are quick to make
« on: November 02, 2017, 10:34:19 pm »
Occasionally my cousins (4yo and 8yo) come to visit and they want to build a ball machine with me. Usually they have to go home before we're done.
I was hoping someone could recommend a simple design that I could build with them in under two hours.

My design was one lift, two tracks, one element, and the whole thing was 3 red rods high. Maybe someone could also recommend the easiest lift and element to make?

Misc / Re: Knex Spiral/Circle Maker
« on: October 21, 2017, 09:14:55 am »
What causes the machine to draw spirals instead of circles?

General Knex Discussion / Re: Some Ideas for "make knex big again"
« on: September 18, 2017, 07:02:45 am »
Instead of making a community Youtube channel, we could instead make a Youtube playlist which contains videos from all our existing channels, and then feature the playlist on the front page of Knexflux.
This would be less work than a new channel, but would achieve the same effect.

EDIT: I forgot that the desired effect of the channel is to attract new people to this site.

Forum Games / Re: Change one letter!
« on: May 06, 2017, 04:39:52 am »

Forum Games / Re: Change one letter!
« on: May 04, 2017, 04:49:40 am »

Project Ideas and Help / Re: Motorized lazy susan?
« on: April 23, 2017, 02:18:40 am »
I think the problem is that there is too much friction. Maybe add more wheels, or put tires on the wheels.

Project Ideas and Help / Re: Motorized lazy susan?
« on: April 20, 2017, 09:56:20 am »
I really like how compact that is.

Project Ideas and Help / Re: Motorized lazy susan?
« on: April 20, 2017, 05:44:44 am »
If you're happy with the turntable going at 5.8 RPM then the gearing wouldn't be too hard, as you'd only need a small blue and large yellow gear.

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