Wright Stuff B

freed2003
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Re: Wright Stuff B

Postby freed2003 » March 19th, 2017, 10:24 am

How do you guys wash the wings? I usually soak the wood and let it dry of a day but that seems inefficient
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Microbe Mission 30/ /
Wright stuff 16/6/11
Dynamic planet 10/8/20(wot)
Road scholar 12/2/22(wot)
Wind power 31/1/4(wot)
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JasperKota
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Re: Wright Stuff B

Postby JasperKota » March 20th, 2017, 2:43 pm

What's a good way of balancing propellers? I've tried adding glue to the lighter side, and also adding bits of scotch tape to the tip.
2018 Events: Helicopters, Mousetrap Vehicle, Parasitology, WIDI
2017 Events: Invasives, Wright Stuff, Ecology
2016 Events: Invasives, Dynamic Planet, Crave the Wave

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Re: Wright Stuff B

Postby jander14indoor » March 21st, 2017, 5:47 am

Scrape the heavy side. Avoid adding weight to balance.

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freed2003
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Re: Wright Stuff B

Postby freed2003 » March 21st, 2017, 10:24 pm

Is there a big difference between 1/16 and a custom gut like 0.065?
Kraemer/Regionals/state
Microbe Mission 30/ /
Wright stuff 16/6/11
Dynamic planet 10/8/20(wot)
Road scholar 12/2/22(wot)
Wind power 31/1/4(wot)
Fast Facts 44//

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Re: Wright Stuff B

Postby jander14indoor » March 22nd, 2017, 6:10 am

freed2003 wrote:Is there a big difference between 1/16 and a custom cut like 0.065?

Well, it depends, but probably not. Keep in mind you are only talking about 0.0625 (1/16) and 0.065 or 0.0025". Less than 4% of the total. The uncertainty in the measurement is probably that big (unfortunately). As a general practice I don't try to cut motors closer than 0.005 inch as a reference.
Here's what it depends on:
- Who is doing the measurement?
-- Rubber is a difficult material to take accurate/consistent measurements on due to its flexibility.
-- To measure thickness you typically use some sort of contacting measurement which applies a probe on both sides of the rubber simultaneously. You have to apply enough pressure to ensure contact, but the pressure of course changes the measurement. This actually requires a specialized tool.
-- If you aren't consistent you can get widely varying results on the same thickness.
-- This becomes particularly problematic when the rubber is measured by different people as they may use different tools that apply different forces, resulting in measures that don't compare well.

- Where is the rubber vs what is ideal for your plane?
-- If you well away from ideal, such a small change won't make a big difference.
-- If you are very close to ideal, you might be able to see a consistent difference.

There are ways to improve the accuracy by changing what you measure. Most top flyers actually measure weight per length. UN-broken in motors for comparison. Weight is pretty unambiguous as a measurement of rubber and allows measurement to pretty small percentage error. If you use a heavy enough piece of rubber (and 1.5 gm is heavy enough) you can measure the length pretty well with a ruler. This will let you determine if two motors are identical to a couple of percent.

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Livonia, MI

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JasperKota
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Re: Wright Stuff B

Postby JasperKota » March 24th, 2017, 9:00 pm

For those that will be competing at NY states on the 8th, does anyone know how large the small gym is? I believe they posted the room parameters for helicopters on newyorkscioly.org, but I have yet to see anything for Wright Stuff. Thanks in advance!
2018 Events: Helicopters, Mousetrap Vehicle, Parasitology, WIDI
2017 Events: Invasives, Wright Stuff, Ecology
2016 Events: Invasives, Dynamic Planet, Crave the Wave

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Re: Wright Stuff B

Postby SPP SciO » March 25th, 2017, 4:37 pm

JasperKota wrote:For those that will be competing at NY states on the 8th, does anyone know how large the small gym is? I believe they posted the room parameters for helicopters on newyorkscioly.org, but I have yet to see anything for Wright Stuff. Thanks in advance!


"East Syracuse-Minoa High School Dimensions: Small gym 60×100; Ceiling height 24 feet."
http://www.newyorkscioly.org/tournament ... -b-states/
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JasperKota
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Re: Wright Stuff B

Postby JasperKota » March 25th, 2017, 4:41 pm

SPP SciO wrote: "East Syracuse-Minoa High School Dimensions: Small gym 60×100; Ceiling height 24 feet."
http://www.newyorkscioly.org/tournament ... -b-states/


Thank you so much! I must've missed it under the announcements section. Sounds like it's around the size of a basketball court.
2018 Events: Helicopters, Mousetrap Vehicle, Parasitology, WIDI
2017 Events: Invasives, Wright Stuff, Ecology
2016 Events: Invasives, Dynamic Planet, Crave the Wave

freed2003
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Re: Wright Stuff B

Postby freed2003 » March 25th, 2017, 7:18 pm

Would positive incidence on the stabilizer be a bad thing? The freedom flight kit instructs to add a shim beneath the leading edge to give a positive incidence, but wouldn't the cause the plane to go down?
Kraemer/Regionals/state
Microbe Mission 30/ /
Wright stuff 16/6/11
Dynamic planet 10/8/20(wot)
Road scholar 12/2/22(wot)
Wind power 31/1/4(wot)
Fast Facts 44//

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Re: Wright Stuff B

Postby SciHC101 » March 26th, 2017, 12:02 pm

Do you think I should purchase the Laser Cut Planes Vanguard P-18? For anyone who bought it: Does it fly well? Are the instructions simple?, and How long did it take to build?

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Re: Wright Stuff B

Postby freed2003 » March 26th, 2017, 12:07 pm

Just got it in the mail. The instructions are short and it looks real easy to build. I heard it can get over 2 minutes if build well so definitely a good investment for the price.
Kraemer/Regionals/state
Microbe Mission 30/ /
Wright stuff 16/6/11
Dynamic planet 10/8/20(wot)
Road scholar 12/2/22(wot)
Wind power 31/1/4(wot)
Fast Facts 44//

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Re: Wright Stuff B

Postby SciHC101 » March 26th, 2017, 12:22 pm

Sounds good - thanks

freed2003
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Re: Wright Stuff B

Postby freed2003 » March 27th, 2017, 12:13 am

freed2003 wrote:Would positive incidence on the stabilizer be a bad thing? The freedom flight kit instructs to add a shim beneath the leading edge to give a positive incidence, but wouldn't the cause the plane to go down?

As long as the incidence of the wing is greater, would this be ok? Like the same way down thrust works?
Kraemer/Regionals/state
Microbe Mission 30/ /
Wright stuff 16/6/11
Dynamic planet 10/8/20(wot)
Road scholar 12/2/22(wot)
Wind power 31/1/4(wot)
Fast Facts 44//

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Re: Wright Stuff B

Postby arman1320 » March 28th, 2017, 3:49 am

What are people's longest flight times so far? This can help us know our competition
Mine is around 1:30 and I cant get the freedom flights kit to work

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Re: Wright Stuff B

Postby wlsguy » March 28th, 2017, 5:42 am

arman1320 wrote:What are people's longest flight times so far? This can help us know our competition
Mine is around 1:30 and I cant get the freedom flights kit to work


You need to know more information than just flight time...

What was ceiling height? Was it a no-touch flight or did the plane hit several times (and get lucky)?
1:30 is still a reasonable time and will be upper mid range at most competitions I have experienced.
It will all depend on the ceiling (and technique of the competitors).

I have witnessed a couple 2:50+ flights in a 35' gym with several ceiling hits. Our team has also managed 2:59 in a 26' ceiling without touching. That being said, I think it will be a challenge to get over 3:30 regardless of the ceiling height. Our partial motor testing has yielded 1:47 (no touch) on a 0.75g motor in 26' ceiling which would simulate a 52' height and yield a time estimate of 3:34


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