jodaboda
11-27-2005, 01:08 AM
I bought a new Dragonfly 22D as an inexpensive way to get into the hobby. It looks nice, it has some nice aluminum, metal tail rotor gears. I think some people may be thinking about buying this heli since there are a whole lot available out there for not a lot of money. Here is my experience so far.
Take it out of the box. Read the manual. Charge the battery. Do as much set-up as I know. Let 'er rip. Adjust delay/limit. Let 'er rip. Adjust delay/limit. Let 'er rip. Adjust trim. Let 'er rip. Adjust trim. Let 'er rip. ETC. AD NAUSEUM.
Let me explain what happens immediately following any of the above said "rippings". Counter-clockwise yaw from hell. Apparently it's not so uncommon:
Here is one thread: http://www.rcuniverse.com/forum/Dragonfly_22D___i_Need_Help/m_2380859/tm.htm
Anyway, being a non-expert (hell, I'm not even a novice yet), it took me over an hour to figure out that the gear on the tail rotor shaft should actually be attached to the tail rotor shaft in some way. It just spun around, free as a bird, light as rain.
So I tried loctite. I got it in there pretty good. I played a couple hours on the sim (still FMS... waiting for G3 to arrive), then went to bed. In the morning, the heli worked! It works! It works! It works! It... oh fudge. There it goes.
Take that last paragraph, insert here for try two: "..."
Try three. This time, I took the whole assembly out. I took off the gear and grinded the shaft for a better loctite grip. I filed down the grooves on the gear (because they look pretty smashed/contorted, maybe just from being low-quality and not aligning properly with the other gear), and I used my dremel tool to grind a ridge on the side of the gear, so that the pin (that sticks out from the shaft) would catch and hopefully lock. I loctite-ed the shaft, put the gear on, put loctite on both sides of it, including over the pin, assembled the rest, and came back in side for some more FMS action. That brings you up to speed. Tomorrow we will see the results.
If this doesn't work, I will have to order some parts or get very innovative with my repairs.
Needless to say, I have logged only a few minutes of actual flight, most of which was just making REALLY SURE that the trim was ALL THE WAY to the right. So I'm disappointed with this heli, and am starting to realize...
You forum-goers are right... these things are toys. And toys-for-which-parts-are-hard-to-come-by at that.
I wanted a cheap way to get into the hobby, and I won't be able to afford something good (over $600, right?) for quite some time. But for now I'm out $100 AND haven't got into the hobby yet.
By the way, does anyone know a good way to drill very accurately through very small, cylindrical things (obviously with a very small bit)? I'm thinking I may have to drill through the gear itself and through the shaft, to pin them together.
Take it out of the box. Read the manual. Charge the battery. Do as much set-up as I know. Let 'er rip. Adjust delay/limit. Let 'er rip. Adjust delay/limit. Let 'er rip. Adjust trim. Let 'er rip. Adjust trim. Let 'er rip. ETC. AD NAUSEUM.
Let me explain what happens immediately following any of the above said "rippings". Counter-clockwise yaw from hell. Apparently it's not so uncommon:
Here is one thread: http://www.rcuniverse.com/forum/Dragonfly_22D___i_Need_Help/m_2380859/tm.htm
Anyway, being a non-expert (hell, I'm not even a novice yet), it took me over an hour to figure out that the gear on the tail rotor shaft should actually be attached to the tail rotor shaft in some way. It just spun around, free as a bird, light as rain.
So I tried loctite. I got it in there pretty good. I played a couple hours on the sim (still FMS... waiting for G3 to arrive), then went to bed. In the morning, the heli worked! It works! It works! It works! It... oh fudge. There it goes.
Take that last paragraph, insert here for try two: "..."
Try three. This time, I took the whole assembly out. I took off the gear and grinded the shaft for a better loctite grip. I filed down the grooves on the gear (because they look pretty smashed/contorted, maybe just from being low-quality and not aligning properly with the other gear), and I used my dremel tool to grind a ridge on the side of the gear, so that the pin (that sticks out from the shaft) would catch and hopefully lock. I loctite-ed the shaft, put the gear on, put loctite on both sides of it, including over the pin, assembled the rest, and came back in side for some more FMS action. That brings you up to speed. Tomorrow we will see the results.
If this doesn't work, I will have to order some parts or get very innovative with my repairs.
Needless to say, I have logged only a few minutes of actual flight, most of which was just making REALLY SURE that the trim was ALL THE WAY to the right. So I'm disappointed with this heli, and am starting to realize...
You forum-goers are right... these things are toys. And toys-for-which-parts-are-hard-to-come-by at that.
I wanted a cheap way to get into the hobby, and I won't be able to afford something good (over $600, right?) for quite some time. But for now I'm out $100 AND haven't got into the hobby yet.
By the way, does anyone know a good way to drill very accurately through very small, cylindrical things (obviously with a very small bit)? I'm thinking I may have to drill through the gear itself and through the shaft, to pin them together.