Flight Times

[jcollier]

It might help. How many winds are left when the plane is landing? If you are running out of winds before your plane hits the floor, then using smaller rubber might help. What you are seeing could be prop angle. Check janders posts on the threads here. He explains it better than I can.

[jander14indoor]

Here's where you are getting into the hard work!

I'd certainly try different size motors. When you do, you might also need a little more up elevator to raise the nose.

I know with the lower pitch props I like I use (from memory, may be a little off, but not much) 0.075 inch motors with 110 or so cranks on my 15 to one winder to get 3 minute flights.

Jeff Anderson
Livonia, MI

[talicoa]

How tall was the gym?

It was between 26' and 28' without too much hanging down. We got lucky and only tapped the beams up top a couple of times.

[Hamtown009]

thanks a bunch jcollier and jander, it sounds like you guys have it exactly right. Jander, where would you recommend buying a rubber band with a diamter of .075??? We would always love and some more time on it to increase times!

[jander14indoor]

You either strip you own rubber to whatever width you need, unfortunately this gets you into the one pricey toy I own for indoor flying, see: http://www.gryffinaero.com/models/ffpag ... arlan.html for an example and plan on spending $150. If you really get into free flight indoor, it will pay for itself, but for WS... maybe get a couple of schools to go in on it?
Alternatively you find a local nut like me as sweet talk them into stripping the rubber for you, depends on where you live on how hard it is.
Finally you can buy pre-stripped rubber at http://www.a2zcorp.us look under model supplies, indoor, rubber. He has any size you want. http://www.freedomflightmodels.com has a couple of custom sizes in the appropriate range for SO. He also has a prop pitch gage. There may be a couple of other sources out there, but I'm not sure who they'd be.

Jeff Anderson
Livonia, MI

[leetx]

At freedom flight models, you can get custom stripped widths. There is an item called "Custom Cut Rubber - 17 gram bag". After your order it, send an e-mail to them to specify the exact size you want. I have ordered .080" from them and might order some .075" in the future.

[eta150]

Has anyone tested with the state/nationals wing? I'm wondering if the bonuses are worth my time. I figured I'd have to fly at least 2:10 to make it worth it for states, and if anyone had achieved this. Also, I was wondering if the tail should be made smaller to fly a states wing, and if the rubber generally needs to be wider or thinner for a skinnier wing.

[Greg Doe]

Eta150
Your time would be better spent working on getting another 30 or 40 seconds out of what you've
already got. While you're at it think about the numbers. If the Freedom Flight Airplane has a 15
centemeter chord, and the bonus wing is 1/2 that, you have 1/2 the wing area to support the
same 8.5 grams.(airplane and motor). Your airplane has to generate the same lift with 1/2 the
wing area! The higher wing load "bonus airplane" will have to fly faster to stay in the air, and use
up the "fuel" faster. Good luck.
Greg Doe
Smyrna, TN

[eta150]

That is what I was thinking, but I technically don't need the same amount of lift (because of the bonus), and I think (correct me if I'm wrong) that the relationship between wing area and lift isn't linear, and I should be able to get enough lift if I use different level of curve. I also don't know how much more time I can get out of a 2:50 + plane.

[leetx]

That is what I was thinking, but I technically don't need the same amount of lift (because of the bonus), and I think (correct me if I'm wrong) that the relationship between wing area and lift isn't linear, and I should be able to get enough lift if I use different level of curve. I also don't know how much more time I can get out of a 2:50 + plane.

Depending on the venue where you fly, planes this year can do substantially higher than 2:50. At 30' flying no touch, the freedom flight plane can do 3:45. At 25', about 3:30.

leetx
WS coach