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General RC Heli Discussion Discuss general topics on rotary wing aircraft, including construction, Servo's, Gryo's and Stabilizer discussions.
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Topic Review (Newest First)
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| 05-25-2011 08:34 AM | ||
| Froghammer |
Re: The Good, The Bad and The Crashy I wish it were but the heli consistently tips when I piro. I can't even do a really fast piro without it getting unstable. Surely I should be able to bang the rudder stick full tilt for just one revolution without it getting wobbly to the point that I have to recover from it afterward. Even a flybarred heli can do that. I'm still sure it's a COG thing because I didn't really take a lot of care with that when I placed my components and it's slightly tail/right heavy. |
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| 05-25-2011 04:58 AM | ||
| al_voisine |
Re: The Good, The Bad and The Crashy Quote:
 AL |
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| 05-24-2011 08:07 PM | ||
| Froghammer |
Re: The Good, The Bad and The Crashy Got out again tonight and managed to actually fly (okay, mostly hover...) three packs in a row with my 450 pro. All I have is three, so that was the limit. Haha. Despite the windy conditions, I left with the heli in the same condition as it arrived. That's a win in my books. Even had a few moments when I thought of backflipping it, but I'm going to save that for a big field where I have more room for error. It was so gusty tonight that occasionally the heli would balloon up or drop 10 feet really quickly. That wouldn't be good mid-flip.  The power to weight that a 450 pro has is really impressive. It can really rocket if you want it to. I'm finally sure enough of my build and how the heli is performing to launch it off the ground with a serious collective punch. Pretty fun! All I have to do now is sort out my pirouetting problem with the BeastX. I know the piro optimization is right and am suspecting I need to work on my heli's center of gravity. I think putting the ESC on the side instead of under the battery tray is making it tilt while it rotates. |
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| 05-23-2011 11:37 AM | ||
| Max |
Re: The Good, The Bad and The Crashy Sorry to hear about your 250. But I'm sure it will be back in the air again As for your 450, I am glad to hear you are erring on the side of caution when you start getting too many spectators. Better safe than sorry! |
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| 05-22-2011 04:20 PM | ||
| Froghammer |
Re: The Good, The Bad and The Crashy I'll see if I can find some left hand bits like that. And I thought about going all the way through as well. That's the way I want the head anyway. |
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| 05-22-2011 03:48 PM | ||
| bartman |
Re: The Good, The Bad and The Crashy Drill out the head and put a bolt straight thru like the 450. I also have some small snap-on left handed drill bits. The bit will usually drill part way into the broken bolt then grab and unscrew it the rest of the way. Just a thought. |
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| 05-22-2011 03:06 PM | ||
| Froghammer |
The Good, The Bad and The Crashy So this long weekend I've been sneaking out two batteries at a time while the kid is sleeping or between house maintenance duties. Yesterday I decided to take out my newly rebuilt flybarless 250. All shiny and new and only been flown three times since it was all Steve Austin'd. You know where this is going... So yeah, I got through two packs and was really doing well. My hovering has come miles since I started- I'm pretty confident in all of the upright orientations now. But then the third pack happened. I fly at a downtown schoolyard, so with the wind, trees and the buildings, the air gets very turbulent and unpredictable. I got caught in a downdraft while nose in, the heli started tipping and before I knew it I was a foot off the ground. Made one last ditch effort to save it but it hit the dirt. I was a split second too late on the throttle hold, which would come back to haunt me. The heli was fine- blades and everything. Even the feathering shaft is okay. The only thing I noticed was that the main links had popped off the blade holders and the washout arms were twisted on the swash, so I figured it slipped. But what actually happened was that the washout base was fine, it was the Jesus bolt (I blame the Rapture for that one. Just sayin') that had snapped and the main rotor housing had twisted a bit on the shaft. The ultra crappy part is that now I have to buy another rotor housing because I can't get the tiny end of the bolt out of the housing. And Rotorquest is having a sale but out of stock on that piece. Double bummer. So anyway, I decided to charge up the 450 batteries and fly that. Snuck out again last night and got through two packs before some curious kids started watching, so I landed and packed it in, happy with my flying. Today I got out for another two packs before some curious kids wanted to watch and had to land it. It's the price you pay for flying downtown- people think it's cool and want to watch, but I'm not comfortable at all just in case the absolute worst case scenario happened. The 450 is just so much more stable than the 250. Takes a breeze better and is obviously much less twitchy. I'm really loving the Microbeast unit on it and can't say enough about the KDE head. Having the washout integrated into the head makes setting it up so much easier. If you're thinking of going flybarless, I highly recommend it. Poor 250 though. I've tried and tried to save that main rotor housing but it's a no go. There's simply none of that Jesus bolt to grab on to in order to get it out. Shame, 'cause the head is brand new. I wish they would have done it like the 450 and have the bolt go right though and put a nylock nut on it. |
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