Originally Posted by tablighs

hmm.. people getting all hyped about walkera's new flybarless and 3 blade helis but still no replies yet to my qstn about the advantages of such head designs

Less parts to break/lose

That's all? I mean, im sure there's more to that, but thanks for the reply!

Better rotor efficiency (less drag from linkages/levers, air is less disturbed around the blades) and less weight.

Originally Posted by tablighs

That's all? I mean, im sure there's more to that, but thanks for the reply!

Multi-rotor heads have smoother response.

Originally Posted by tablighs

That's all? I mean, im sure there's more to that, but thanks for the reply!

Oh I thought you wanted to know what I liked about them.. Lots of other reasons I'm sure..

Thanks all for the response! Well.. Another question comes to mind? Is being flybarless and 3 blades all good? Are there disadvantages? If not, its quite clear why walkera is going to this path and maybe all rc heli setup from walkera will be flybarless in the future.

OK, someone correct me if im wrong, but this is what I know :

1) the less blades you have, the more efficient the rotor is.
this means that a single blade rotor would be most efficient :
http://www.lidak.it/

2) more blades => less vibration on the heli

3) A person i know which designs heli's told me that when I see
a real heli with more than 4 or 5 blades, i can assume the developers
ran intosome vibrations they wanted to cancel out

4) for RC helis - more blades to break per crash .... ?

5) flybarless : in very short - much less drag on the rotor, less
weight, less parts/hinges, direct link to blades (removing all delay
in cyclic input that a flybar can create), in FFF (fast forward flight)
both the paddles of the flybar can have negative pitch (taking into
account the incoming air stream due to FFF).
in such a system the helicopter's behavior ( stability Vs Agility ) is mainly decided by the
electronics.

6) i think people like the multi rotor heads for RC use mainly for scale
models....

Now all of the fbl helis have been removed from walkera's site They can't make up their minds I guess.

Originally Posted by tablighs

Thanks all for the response! Well.. Another question comes to mind? Is being flybarless and 3 blades all good? Are there disadvantages? If not, its quite clear why walkera is going to this path and maybe all rc heli setup from walkera will be flybarless in the future.

Flybarless is lighter and has fewer parts. So, it should be more responsive and more durable. But, being lighter and more responsive means you need a head design and electronics to control it, under a variety of conditions.

A 3 blade head generates lots of torque and is resistant to direction changes. So, it's very good for scale and sport flying, but not for 3D.

Most flybarless systems do not use 3 axis gyros. They use conventional 2 axis gyros and micro processors to provide mixing, delays, and other features. A 3 axis gyro presents some interesting challenges.

Originally Posted by Balr14

Flybarless is lighter and has fewer parts. So, it should be more responsive and more durable. But, being lighter and more responsive means you need a head design and electronics to control it, under a variety of conditions.

A 3 blade head generates lots of torque and is resistant to direction changes. So, it's very good for scale and sport flying, but not for 3D.

Most flybarless systems do not use 3 axis gyros. They use conventional 2 axis gyros and micro processors to provide mixing, delays, and other features. A 3 axis gyro presents some interesting challenges.

The 3rd axis is the tail. So I don't see a challenge or difference between the function of a 2 axis fbl system and a 3 axis fbl system. The 2 axis just requires a separate gyro for the tail which the 3 axis has built in. This benefit would save you money, weight and space by design. No additional processing would be required to have the 3rd gyro interact with the other 2 gyros.

Originally Posted by aerorotor

The 3rd axis is the tail. So I don't see a challenge or difference between the function of a 2 axis fbl system and a 3 axis fbl system. The 2 axis just requires a separate gyro for the tail which the 3 axis has built in. This benefit would save you money, weight and space by design. No additional processing would be required to have the 3rd gyro interact with the other 2 gyros.

I was thinking the challenges would be more in terms of adjustments, tuning and failure rate, in a $50 package. Walkera frequently misses a lot of the details.

Now theres another one up on Walkera's site. The V450D01!

Looks like the non scale brother of the big one they had before.

That looks like a 450 size heli, like the TRex. Walkera has not had a 450 size CP heli, at least not that I've seen, until this. Seems like they might be getting into that market. (could be gone from the site tomorrow)

Dan

This is a strategy I have not seen from Walkera...
Discontinue stuff before even selling one...
Accounts department is not going to like this.

Amp

Originally Posted by Ampdraw

This is a strategy I have not seen from Walkera...
Discontinue stuff before even selling one...
Accounts department is not going to like this.

Amp

We are their little puppets.
They pull the strings and we do as they want.
Because they are doing this. They know as soon as the new helis hit the stores.We will all fall over each other to buy all the new helis we can before they are discontinued.
Here you go fellas,,,,,,,,,,,,,,,,yikes, Not this heli.
Ahh, you can have this heli if you want,,,,,,,Nooooo,Just joking.
Say please,,,,,,,,,,,,,,,,,,,,,,,,,No ya don't
Ok,you can have this heli now,,,,,,,,,,,,,,,,,,,ooop! No
And so on