What am I doing wrong? :/

[Stanley Speel]

Hello

I got a 450 pro DFC last week as part of a swap. It flew great for about 10 flights and then I decided to practice some autos (never tried them before intentionally). Quite a few tipovers later and a blade grip comes flying off.

I thought this was down to either a lack of threadlock on the feathering shaft bolts (unlikely as the rest of the heli seemed built to a high standard by its previous owner) or due to all the blade strikes doing the autos.

£40 later and I have fixed it all up again... making sure to use new feathering shaft bolts and threadlock them properly. I manage 6 flights yesterday at Twickenham and then today after two flights while doing piroflips, exactly the same thing happens!!

I have got no idea why it would do this? I don't want to spend another £40 fixing it to have it happen again - especially while indoors!.

thanks

Stanley

[Delarado]

did you clean the feathering shaft before you installed it?

sometimes thers cutting lube makes its way into the threads, makes threadlock not stick. I always bathe mine in alcohol and stick a pipe cleaner or similar in there to clean it out before installing.

You may have something else a little bent thats making it work loose.

Also, do autos on your 600 - its a million times easier. I know its hard because its more expensive etc, but 450s barely auto at all, they are really tricky to do it on!

[Stanley Speel]

did you clean the feathering shaft before you installed it?

sometimes thers cutting lube makes its way into the threads, makes threadlock not stick. I always bathe mine in alcohol and stick a pipe cleaner or similar in there to clean it out before installing.

You may have something else a little bent thats making it work loose.

Also, do autos on your 600 - its a million times easier. I know its hard because its more expensive etc, but 450s barely auto at all, they are really tricky to do it on!

No I didn't - hopefully that is what it is I might try mixing red and blue like I do with the 600.

I tried some autos on the 600 today too - managed 4 fine but didnt flare enough on the 5th and stripped the TT gears!

[Delarado]

oh no! Not good OH well youll get used to it.

I only ever use blue on my helis and never had an issue with feathering shaft.

[Carapau]

As a preflight I always give the blade grips a tug to see if they are loose, as I suffered from this in the past. The feathering shaft is notorious for coming undone due to unclean threads. As for autoing a 450, I think they are great to learn on because if you bodge it a bit the heli bounces 9 times out of ten and you can just pick it up and fly again. Every time I have bodged an auto on my 600 I have had to do some repairs.