Search found 618 matches

by bjt4888
January 31st, 2020, 5:07 pm
Forum: Wright Stuff C
Topic: Climbing issues
Replies: 17
Views: 2887

Re: Climbing issues

My plane isn't climbing at all, it does get 2 full, slow turns before touching the ground but it does not go higher than when I let go of it. Are there any obvious changes I should make to the plane that I have missed? (sorry for the vagueness) You give very little information to go on to help you....
by bjt4888
January 28th, 2020, 10:55 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 705
Views: 50162

Re: Wright Stuff C

Also, “wing(s)” are plural in the rules and “stabilizer” is singular.
by bjt4888
January 28th, 2020, 9:55 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 705
Views: 50162

Re: Wright Stuff C

I guess biplane usually means two wings, one above the other. Can it also mean two stabilizers, one above the other? That would be VERY useful. A biplane refers to two wings, and wings are defined as the main lifting surfaces. Not always. In my engineering classes way back when, the wing, stabilize...
by bjt4888
January 27th, 2020, 5:14 pm
Forum: Wright Stuff C
Topic: Biplanes
Replies: 6
Views: 3399

Re: Biplanes

Does anyone know the ideal spacing between the two front wings on a biplane? Js, Biplane wing spacing of double the wing chord would be desirable. However, this size structure may be difficult to build light enough and strong enough and may cause issues with ceiling hits. Good question. Brian T
by bjt4888
January 26th, 2020, 6:59 am
Forum: Elastic Launched Glider B
Topic: Elastic Launched Glider B
Replies: 114
Views: 6369

Re: Elastic Launched Glider B

Can you give a better description of "flips in a circle"? Which way is it going (to the top, to the bottom, to the side) Coach chuck When it launched to top, it flipped over and down a circle vertically and then to back to glide horizontally. Thanks, Nathan Nathan, Good job measuring your incidence...
by bjt4888
January 25th, 2020, 4:32 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 705
Views: 50162

Re: Wright Stuff C

Eric,

Congrats to Luke. Excellent critical thinking under pressure!

Our next invitational has a 12 ft ceiling.

Brian T
by bjt4888
January 12th, 2020, 6:25 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 705
Views: 50162

Re: Wright Stuff C

Yes, agree with Jeff. Going through a pound already this year was just an exasperated remark on my part. Sorry, not very helpful. Motors are longer this year than in the past and lots of combinations to test with the challenging little propeller and two-direction flying. As difficult as the event is...
by bjt4888
January 12th, 2020, 5:45 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 705
Views: 50162

Re: Wright Stuff C

6-8 practice flights per motor if not pushing the winds too hard. Number of turns on a particular length and density rubber motor can be determined pretty accurately using the John Barker equation that I have previously published in the Scioly forum and that Eric has actually found and reposted most...
by bjt4888
January 12th, 2020, 4:40 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 705
Views: 50162

Re: Wright Stuff C

For an event where time is unlimited, I think risking breakage is mandatory. Luke knows he's sacrificing 5-10 seconds of flight time by winding conservatively, but he's understandably concerned about launching twice in the allowed time frame and having to deal with an unexpected motor failure. He t...
by bjt4888
January 9th, 2020, 2:45 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 705
Views: 50162

Re: Wright Stuff C

Air, Yes, molded carbon cloth, probably actually “carbon veil”; ultra thin cloth. Ray is a master craftsman. Did you note the ball bearings for the carbon rod shafts? The airplane pictured holds the AMA Category I (ceiling height of less than 8 meters, or 26.3 ft) national record for FF electric, fl...

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