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After about ten flights with my 450 I got a little bit too clever and got a bit close to the deck with the model banked over.
The result was the blades jabbing into the ground
- I killed the throttle and once I knew it wasn't going to try doing the chicken dance I disconnected the battery and had a look. Nothing was hanging off broken so that was a good start.
The boom had taken a little hit as it had been shoved in a bit letting the belt go slack. There was no damage to the tail but I gave it a good check over and got the tension right again.
Going on what I have read I know that any time something stops the blades turning the main shaft and feathering spindle are at the top of the list of things that can bend. With the blades still off, I plugged the battery back in and got the head spinning at the lowest rpm - the main shaft was bent
I got the head all off and took the feathering spindle out. It didn't look bent but I know it doesn't have to be visible to cause bad vibrations. I rolled it down a bit of photo frame glass and it was fine, phew. I used this opportunity to inspect all the ball links, swash and servos and they're all fine.
I saw the main gear had some damage to a couple of teeth so I replaced it, £5.49 for three is a pretty fair price for spares
I then inspected the blades, it was only the tips that caught the soil but I looked them over and gently flexed them to see if there were any cracks. I also had a good look at the mounting holes and roots and I couldn't see anything wrong there either.
I had it flying before and the tracking seemed a little off, but I fiddled with the links and it seems okay now. The machine feels a bit twitchier but I guess that is a common feeling with a machine you've just repaired.
I think I got off lightly there
The result was the blades jabbing into the ground
- I killed the throttle and once I knew it wasn't going to try doing the chicken dance I disconnected the battery and had a look. Nothing was hanging off broken so that was a good start. The boom had taken a little hit as it had been shoved in a bit letting the belt go slack. There was no damage to the tail but I gave it a good check over and got the tension right again.
Going on what I have read I know that any time something stops the blades turning the main shaft and feathering spindle are at the top of the list of things that can bend. With the blades still off, I plugged the battery back in and got the head spinning at the lowest rpm - the main shaft was bent
I got the head all off and took the feathering spindle out. It didn't look bent but I know it doesn't have to be visible to cause bad vibrations. I rolled it down a bit of photo frame glass and it was fine, phew. I used this opportunity to inspect all the ball links, swash and servos and they're all fine.
I saw the main gear had some damage to a couple of teeth so I replaced it, £5.49 for three is a pretty fair price for spares
I then inspected the blades, it was only the tips that caught the soil but I looked them over and gently flexed them to see if there were any cracks. I also had a good look at the mounting holes and roots and I couldn't see anything wrong there either.
I had it flying before and the tracking seemed a little off, but I fiddled with the links and it seems okay now. The machine feels a bit twitchier but I guess that is a common feeling with a machine you've just repaired.
I think I got off lightly there
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