Handling Characteristics

[Betamax_Disco]

I have a 450x stretch running 370mm blades on 6s. I'd like to tame things down a bit and save on potential breakages.



I have a stack of 325mm blades and standard booms. Is there any reason I wouldn't be able to run these on 6s?



I'm uncles on head speeds etc. Currently its on 80pc throttle. Will the shorter blades make it too hard to get enough lift?



All help appreciated.

[Imzzaudae]

That looks like a bad helicopter!

Back the head speed off. Not bellow 80%

Stunt Throttle curve 80 80 80 80 80
Stunt Pitch curve 0 25 50 75 100

Normal mode Throttle 0 50 80 80 80
Normal mode pitch curve 40 50 65 75 100

Reduce the collective to Plus and minus 10.

Cyclic Plus and minus 5

Back off the DR to 65 and 30 Exponential
on Aileron and Elevator.
DR 100 No Exponential on Rudder.

Fly both sets of blades and see what you think.
Better yet leave it alone and get a stock 450X and keep it for those days your firing on all 8.

[Betamax_Disco]

Thanks mate, the guy tuned it down for me but I was over enthusiastic and crashed it pretty quick. Just misunderstood some settings and what my heli would do when I drop the collective. Came off ok considering.



Rebuilding now and would like to use my stock stuff on the rebuild while I wait foe some nicer blades. Just wanted to make sure it will handle ok on both setups.



I'll adopt those settings (thanks) and am hoping to get some sim time before my next run.



Also, any tips on getting the hex screw out of the tail shaft? It's like it's welded in there and I need to replace the tail linkage.

[crashjack]

Personally, I would leave it stretched with the longer blades... longer blades = more stable, and longer boom + longer blades = more visible. I would also follow Imzzaudae's recommendations.

Im not sure which screw you are talking about but it is likely Loctited. Try heating it and then try to remove.

[Imzzaudae]

The tail bolt is thread locked in.
Get a fine tip soldering iron. plug it in and when it's hot, stick it in the head of the screw and get the screw hot. The trick is 10 seconds in the screw 5 out 10 in 5 out.

You want the heat to spread down the bolt and soften the thread lock without melting the plastic parts.

It takes a few minutes and a little care but it works well.
clean those threads up nice before you re thread lock.

Sounds like someone sold you a Lamborghini 450 helicopter for a CP trainer.

If you go back to stock, you will have to check the # of teeth on the main motor pinion and see if it's been changed for the longer blades! Running 6s it will also be a hotter motor and ESC. It may not take well to 3s.

When you shorten the tail boom. You will have to watch the CG. 3S 2200 weight will be required. Lots of things to consider.

The simulator will make learning how to fly much more affordable!

[Betamax_Disco]

Thanks I will try the soldering iron.



Yeah its a sweet bird, couldn't be happier with it.



To be clear I mean stock blades and boom but 6s.



Tried a short flight, hovered ok and didn't crash it this time. Fingers crossed!



Landing it is the hard part!

[franknsled]

Landings are easy. Gravity will take care of it. Good landings now that's a different story! Welcome to Freaks. Any questions just ask. There are a lot of very smart/experienced pilots here(of which I am not one).

[crashjack]

I always land with autorotations... from like 4' - 5', not 40'. It is more difficult with a 450, but landing under no power is so much more forgiving if and when something bad happens. My very first flight with my first 450 heli, I auto-landed and never looked back.

[Betamax_Disco]

Thanks guys. Do you mean harder vs bigger helis? I notice you get less spin time on the 450 vs say the 600.

[crashjack]

Yes. An autorotation with a 450 is more difficult than a 700. Simply, the headspeed will decline faster than the pitch of the blades can support lift for the 450, much faster than it will with a 700.