Helicopters C

[AznPr0d1gy]

Dont even try going for the bonus, its pretty much a sham.

[Bazinga+]

Dont even try going for the bonus, its pretty much a sham.

Amen.

[P2P]

Just wondering, which has given you better times: stationary top and rotating bottom or both rotating?

[Skink]

I guess I'll bring this up since we're talking about the kits. Did anyone else experience crazy turnaround times for the FF kit? We ordered ours before the new year and it still hasn't arrived. I'm starting to panic because the competition is only a month away.

Did you get a confirmation for the order? It took around four weeks for my kit to arrive. I would suggest buying a different kit for now or try making your own helicopter just in case the FF one doesn't arrive quickly enough.

Yeah, I've been ordering from FFM for a long time, and this was the first season he was so inundated with requests. Back in November, my kits took more than 3wk to ship. If he's still backed-up, that's some business!

[kaziscioly]

Our helicopter appears to fly alright, but it always lands with more than half of the rubberband's winds remaining. Does anyone know why this may possibly be and what could be done so that the helicopter makes use of all of its winds?

[Krypton]

Our helicopter appears to fly alright, but it always lands with more than half of the rubberband's winds remaining. Does anyone know why this may possibly be and what could be done so that the helicopter makes use of all of its winds?

Either you need to shorten the length of ur motor or increase the thickness of it.

[aldragon]

How did you guys reach 200 winds? Hearing that number is insane. I've been using .094" thickness and I've been going 100 winds with a 15:1 winder, giving me a time of at least 1:30 (being beaten up, my best time been 1:45 - did not hit the ground and was in better condition). I'm trying to increase my flight to 2 minutes but I'm not sure how much longer I should make my rubber band. I tried using .085" thickness instead with 105 winds and got a much shorter time. I need to test for hours to figure a somewhat better optimization and my competition is in a week so I don't have a lot of time. Any help is appreciated!

[Bazinga+]

Just wondering, which has given you better times: stationary top and rotating bottom or both rotating?

In my experience stationary bottom and rotating top has worked best for me, but realistically there's virtually no difference. Because of the balance of forces both rotors will end up going at the same angular velocity whether one is stationary or not as long as both rotors are built to the same specs. The biggest difference is the extra weight required to make the bottom rotor rotate (adds about .05-.07+ grams to make it rotating because of the extra length of piano wire and the tube).

I wanted to switch over to both rotating because I was under the impression that the body would then count for the bonus if you attached a small rotor on it, but now i'm a bit unsure about that.

The official clarification on that is very unclear about the bonus as is the description in the rules. The clarification states that a legal lifting surface is defined as something that "must contribute lift to the overall flying assembly. An easy way to demonstrate that would be to demonstrate flying it with and without the surface, if the surface is not present then the flight would be significantly different."

Fuzzy words like 'significantly' low key trigger me, especially in this case where 'significantly different' has such a broad interpretation. So if I attached a small (~5cm) single rotor to my center body is that enough for the bonus? Or does the body have to have a net torque applied to it? If it needs a net torque to be applied then how is it possible to get 3 single bladed bonuses with just one rubber band? smh.

[Krypton]

Just wondering, which has given you better times: stationary top and rotating bottom or both rotating?

I wanted to switch over to both rotating because I was under the impression that the body would then count for the bonus if you attached a small rotor on it, but now i'm a bit unsure about that.

.

The single bladed rotor has to be freely moving from the motor stick :/ Having a blade attached to the motor stick would not satisfy the bonus.

[bernard]

Just wondering, which has given you better times: stationary top and rotating bottom or both rotating?

I wanted to switch over to both rotating because I was under the impression that the body would then count for the bonus if you attached a small rotor on it, but now i'm a bit unsure about that.

.

The single bladed rotor has to be freely moving from the motor stick :/ Having a blade attached to the motor stick would not satisfy the bonus.

What rule makes you say the blade and motor stick cannot be rigidly connected?