Search found 68 matches

by torqueburner
January 11th, 2015, 11:37 am
Forum: 2015 Build Events
Topic: Elastic Launched Glider B
Replies: 134
Views: 29610

Re: Elastic Launched Glider B

I am helping our Middle School students with their gliders. I recommended that they start with Stan Buddenbohm's kit rather than the FF flapper design, mostly due to ease of construction, though I've seen the posted observations that practice and launch technique and trim are probably of more import...
by torqueburner
January 11th, 2015, 11:27 am
Forum: Wright Stuff C
Topic: Winding
Replies: 24
Views: 7731

Re: Winding (previously in Design thread)

Here's a link to a video of an international level competitor winding his rubber motor off of the airplane. His rubber motor is attached to a torque meter. He is taking quite a bit of time to wind as in AMA competitions there is not the 8 minute Science Olympiad flight window. You will want to wind...
by torqueburner
January 6th, 2015, 3:07 pm
Forum: 2015 Build Events
Topic: Air Trajectory B/C
Replies: 573
Views: 105481

Re: Air Trajectory B/C

Just an unscientific poll: . . .I think a ping pong ball would be too erratic . . . Why would a ping pong ball be "erratic" after launch? Because it it the lightest of the allowed projectiles? Consider a high quality ping pong (table tennis) ball, such as those used in world class competitions. I w...
by torqueburner
January 6th, 2015, 2:51 pm
Forum: Mission Possible C
Topic: Designs
Replies: 230
Views: 32498

Re: Designs

torqueburner wrote:
How about 1 quart milk jugs, if you are looking for something smaller?
goodcheer wrote:
It would work in my opinion, but the FAQ about the jug having a handle is what is hanging some of us up.
The 1 quart milk jugs we are using do have a handle. . .
by torqueburner
January 5th, 2015, 8:41 am
Forum: Mission Possible C
Topic: Energy Transfers
Replies: 24
Views: 5627

Re: Energy Transfers

I agree with Chalker. . .Adding the salt would be like turning on a chemical switch to the electrical current. . . Sorry in advance, this is a bit long winded. . . I would say that dissolving NaCl in water is a physical change, not a chemical change. I spoke to our current and past high school chem...
by torqueburner
January 5th, 2015, 7:59 am
Forum: Mission Possible C
Topic: Designs
Replies: 230
Views: 32498

Re: Designs

goodcheer wrote:
FAQ has been submitted. In the mean time, we have found half-gallon jugs (with handle, cut down to 10/11 cm) work good. They are smaller than the gallon jugs, although bigger than soda bottles.
[/quote]

How about 1 quart milk jugs, if you are looking for something smaller?
by torqueburner
December 23rd, 2014, 8:23 am
Forum: Wright Stuff C
Topic: Winding
Replies: 24
Views: 7731

Re: Winding

I like the double overhand knots myself. . . Now some magic happens. . .Pull the loop ends apart again and walk the second knot up to the first. Thanks for this, Jeff. I had heard of this technique, but I learned to use square knots and they never slipped, so we were happy. But this is definitely b...
by torqueburner
December 19th, 2014, 10:23 am
Forum: Wright Stuff C
Topic: Design
Replies: 178
Views: 30385

Re: Design

artysophia, . . .Here's a link to a video of an international level competitor winding his rubber motor off of the airplane. His rubber motor is attached to a torque meter. He is taking quite a bit of time to wind as in AMA competitions there is not the 8 minute Science Olympiad flight window. You ...
by torqueburner
December 18th, 2014, 9:36 am
Forum: Wright Stuff C
Topic: Winding
Replies: 24
Views: 7731

Re: Rubber motor not

does anybody know if ca glue can be dabbed on or near the knot of the rubber motor ?? the kids have tied what seemed to be a very good knot and it has slipped out a couple times. when wound around 1500 times or so....i always thought ca glue would melt or burn the rubber..any thoughts or suggestion...
by torqueburner
November 23rd, 2014, 7:05 am
Forum: Wright Stuff C
Topic: Winding
Replies: 24
Views: 7731

Winding

A thread for discussion of winding technique. Just to get things started, here are a few thoughts: Winding for maximum performance is something that goes way beyond just turning the handle on the winder. If you look back into the “Old Board 2001-2008” archives at the bottom of the “Forums” page, you...

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