Search found 719 matches


by retired1
November 28th, 2019, 7:51 am
Forum: Gravity Vehicle C
Topic: Gravity Vehicle C
Replies: 182
Views: 10242

Re: Gravity Vehicle C

WD 40 will leave a thin gummy residue after it dries unless you blow it out. Acetone is quite flammable souse it with care.. 70% rubbing alcohol is somewhat ls flammable and should work well. I like blowing the bearings dry with high pressure air after a soak in any solvent,. but that is a violation...
by retired1
September 12th, 2019, 12:19 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 430
Views: 25703

Re: Wright Stuff C

Call it a "stagger wing" like the ancient beach aircraft by that name.
by retired1
August 16th, 2019, 1:40 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 799
Views: 61243

Re: Wright Stuff C

Jeff has really good words of wisdom. This post should be mandatory reading for any student as soon as they are assigned to the WS event . While I mostly agree with his glue comments, a thinned coat of duco as a primer followed by a full strength coat is equally as strong as any super glue joint and...
by retired1
June 3rd, 2019, 11:26 am
Forum: 2019 Regionals & States
Topic: Florida 2019
Replies: 208
Views: 25905

Re: Florida 2019

Curious!! What is the rumor of why the switch from UCF to UF for the state meet. Since you are involved with UF, will you have a 1 mile hike for any event like UCF using the education Gym for 4 events.
by retired1
May 22nd, 2019, 7:13 am
Forum: General Competition
Topic: Science Olympiad Events 2019-2020
Replies: 557
Views: 99675

Re: Science Olympiad Events 2019-2020

For a reasonable guess, take a look at what they are going to cover at the summer event classes in Phoenix.
It will not be perfect, but it will give you a decent idea.
by retired1
April 1st, 2019, 12:18 pm
Forum: Wright Stuff C
Topic: Nationals Room Announced
Replies: 23
Views: 2717

Re: nationaws Room Announced

I find it hard to believe that any college that can host the National science Olympiad can not do better. It will require a major change of tactics for teams that are not getting around 4 min flights. Blind dumb luck will be a major factor.
by retired1
March 10th, 2019, 3:38 pm
Forum: Boomilever B/C
Topic: Boomilever B/C
Replies: 370
Views: 43051

Re: Boomilever B/C

Can not argue with actual figures, but 2 grams in 5 grams is 40%. Literature would rate this a WET balsa. 15% appears to be an accepted % for dry balsa and 5 % for dried balsa. Moisture makes the device weigh more and lowers the tensile strength, moisture is not good. It will absorb moisture from th...
by retired1
March 7th, 2019, 2:01 pm
Forum: Battery Buggy B
Topic: Sighting/Alignment
Replies: 33
Views: 3190

Re: Sighting/Alignment

The last time that I mentored an event like this we set up an offset or aim target that would accommodate the required curve. We kept a careful log of the required turns for the wingnut brake as well as the flag offset. They started with some gross settings (distances) As there was more time, smalle...
by retired1
February 28th, 2019, 9:42 am
Forum: Wright Stuff C
Topic: Just trying to get my bad plane to fly
Replies: 30
Views: 3386

Re: Just trying to get my bad plane to fly

Is your plane your design, a published design , or a kit? What size rubber are you using? Is it tan super sport? Your problem is your winding. Rational sized tss will take about 100 winds per inch of the loop. You are flying with a little bit more than what many people land with.The right turn is a ...
by retired1
January 24th, 2019, 6:58 am
Forum: Battery Buggy B
Topic: Battery Buggy Wheel Stopping Mechanism
Replies: 14
Views: 2160

Re: Battery Buggy Wheel Stopping Mechanism

You might want to try using a Teflon washer. In the past, some of the kit makers included a soft thick cloth washer, something like felt.