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HomeScaleAircraftHelicopterScale Model RC Helicopters › 5blade rotor head
03-11-2013 03:14 AM  5 years agoPost 1
rcjp

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Montrose MI. U.S.A.

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Need help!!! putting a 5blade aerodyne rotor head on my md500. With t-rex600 align mechanics ,first need to know what the pitch would be? Am only going to fly scale And why would you need a gyro on the head system?? I used to fly competition before all this 3d crap with multi blade rotors and never needed a gyro on the swash plate only on the tail rotor? Is it possible to fly with out this gyro. On the swash system? Or is it to unstable?? Just wondering, and how is blade tracking done these days? I have not flown helis in a while and just purchase my new scale machine, thanks for the info, would be greatly appreciated- Steve

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03-11-2013 06:11 AM  5 years agoPost 2
Joel Rosenzweig

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Marlborough, MA - USA

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Steve,

A common pitch curve for scale flight, for nearly any machine, ranges from -2 low, +5 or +6 at mid stick, and +10 at full collective. If you set it up this way, you'll certainly be in the right zone, and you can tweak it to suit your tastes.

When you last flew multi-bladed heads, perhaps you found they flew differently than flybarred heads. Perhaps not. You may have noticed their tendency to pitch up when coming out of fast forward flight. You may have noticed any number of instabilities. Different heads and blades are available, and they all feel different, and usually, not quite like the flybarred head. The 3-axis gyros available today are meant to make the flybarless head feel as good as, and now, even better than, a flybarred head. The 3-axis gyro controls the swashplate in the aileron and elevator axis, plus works as a tail rotor gyro.

Can you fly it without the 3-axis gyro? Of course. Will you like it? That's hard to say. You can always skip it, and then add one later if you don't find the rotor system to behave as predictably as you remember it being. These systems are getting very inexpensive, and they work remarkably well.

Everyone has their opinion of the best flybarless gyro. Take a look around the forum here and you'll see a range of opinions. You can make _any_ of them work just fine. Some have features not found on others. And there are different price points. The most basic controller will still do an excellent job.

There are products now that are able to self level when you tell them to, and others can do that and maintain hovering position and altitude, using GPS. It's really amazing stuff.

You still want a gyro on the tail rotor. Of course, you can fly without a tail rotor gyro for the same reasons stated. Most people prefer to use them.

Blade tracking hasn't really advanced in the 27 years I have been flying. We buy good blades that are straight. We measure our pitch rods with digital calipers, and sometimes use turnbuckles if we want to make sure they are just the right and equal length. We use slop free linkages. Add it all together, and you can track your heli on your work bench and have it be perfect without spooling it up.

If you aren't quite that precise, then you get to add tape to the blades, perhaps in concentric circles, and look for the blade(s) that are out, and adjust them one at a time, just like we used to with 2 blades.

Good luck. Take your coat off. Stay a while, and read some on the forum. You'll love it. And welcome back to helis.

Joel

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03-11-2013 10:28 AM  5 years agoPost 3
PETER ROB

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Devon UK

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Steve, You sound old enough, like Joel,( and myself) to have learned how to set up a helicopter mechanically, and learned to fly with the mechanical set ups
before all these make it easy electronics, came on the scene with thinks like laptop computers to adjust the pitch angle at the flying field
Couple of things to what Joel has said
Multi blades require less pitch to fly
With final tracking at the field, choose the main blade, I put a different coloured paint drop on each blade and grip
Put some red marker tape on the lead blade, (red paint)
Put a piece of White tape on the next blade, and track it in
Move the white tape to the following blades until each single blade is tracked to the lead blade

What Joel said about the pitching up, was not so relavent in the early wooden blade days, but with the modern blade, (and light weight machines) it is a lot more noticeable
I found bringing the head speed down, and flying slower, stopped a lot of the ballooning up, that's not to say i do not get caught out on gusty windy days
I still have the original Vario multi blade gyro, with instructions, along with 7 other stabilisation units in the drawer, taken from machines I have bought in
I have tried these units, yes they do work with varying degrees of sucess, but for me I prefer to fly without, the helicopter looks more natural, more like the full size
Peter R

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03-11-2013 11:34 AM  5 years agoPost 4
rcjp

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Montrose MI. U.S.A.

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INFO
Thank you Joel and Peter for the much appreciated information very helpful, I am a turbine scale jet pilot and acomplished heli pilot of 25 years just have not paid much attention to heli,s in over the last 10 years or so, just looking forward to getting back into scale helicopter flying the more realistic it looks the better I like it, thanks again- Steve

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03-12-2013 02:17 AM  5 years agoPost 5
doorman

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Sherwood, Arkansas

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Welcome Back...
just looking forward to getting back into scale helicopter flying the more realistic it looks the better I like it

Welcome back to the addiction, and hopefully we might see you at the NATS/IRCHA later this year??

If you make it, you can find all the scale junkies under our own scale tent and flying area....

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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03-19-2013 01:40 AM  5 years agoPost 6
rcjp

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Montrose MI. U.S.A.

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600mm composite blades for scale flying
just wondering again if anyone has ever seen or heard of the TF model composite blades? I seen one response that said they are ok except do not use above 80 degree temp, but he never said why? I am trying to find that thread to find out why he said that and can`t find it, I called Aerodyne where I bought them, and they said they have never heard any complaints or no negative info on these blades, well I will have to find out for myself and just see how they are, thanks for any other info on these particular blades.-Steve

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03-19-2013 02:36 AM  5 years agoPost 7
Thumper217

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Slidell, LA - USA

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Steve, I am no expert but do have some experience with the TF composite blades. I like them for scale because they have a narrow chord and to me they look more scale than some of the more common 3D blades. Their rough appearance is the way all of the sets that I have came but I have found that they take automotive rattle can primer and paint well so you can dress them up a little.

In regards to the way they fly I have mixed feelings about them. I have only been flying for a little less then two years and when I was setting up my first scale ship, which was a 600 size electric AS350 with a three blade head, I had a few tip overs. The problem was that these blades are extremely durable and while in most cases the blades survived the mishaps the damage was transfer instead to pieces and parts of the head and drive train. Once I got some more practice I flew them ok while using a SK720. They create a lot of lift but are also very flexible, which the SK720 didn't really like. I didn't know this at first due to my inexperience but discovered it by accident when I decided to try a set of Funkey blades. The heli seemed a lot more stable with the stiffer Funkey blades. I fly in South Louisiana where it tends to get a little on the warm side (high 90's) and have noticed that the blades do sometimes tend to warp and I have heard not to run them above 1600 head speed but I've tried to keep my head speed down below that anyway. I guess my overall opinion of them is that they are OK, I prefer other blades to fly with but will continue to use the sets that I have. They also do not come in a left hand rotation version, which is what I needed for my current project, an A109. Hope this helps. Andrew

Thumper

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03-19-2013 02:54 AM  5 years agoPost 8
rcjp

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Montrose MI. U.S.A.

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600mm composite blades for scale flying
yes that info helps I intend to use them, however I did talk to the guy at aerodyne rc and he said that the composite blades are better if you don`t use a gyro, but if you go to the carbon blades he highly recommends,in fact that you have to have a gyro when going with the stiffer blades, the blades look like they have a little washout, so do you mean that the warpage gets them out of track? or do they return to normal? so I am going to try these for now because I plan on flying scale with no hard turns or any type of 3d crap just smooth flying, thanks for the info.-Steve

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03-19-2013 11:56 AM  5 years agoPost 9
Thumper217

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Slidell, LA - USA

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I have never had the warpage affect the tracking. Once the head spools up the blades seem to straighten themselves out. Keeping your flying style nice and smooth is the key with these blades, they do not like sudden pitch changes. That's when you really notice the flex. I only fly scale not 3D but have pushed these blades a little trying to keep the heli airborne due to my dumb thumbs

Thumper

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03-21-2013 01:18 AM  5 years agoPost 10
donny_boyette

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Robertsdale, Al, Usa

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My 2 cents
I say use the multi head gyro. I'm flown both and the gyro makes flying a lot easier, without it the controls are just too sensitive. I'm not old school, but if technology can make your life easier go for it.

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05-17-2013 05:59 PM  5 years agoPost 11
rcjp

rrNovice

Montrose MI. U.S.A.

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where else can I get a set of rotor blades
I need to get some rotor blades for my rc aerodyne 5 bladed rotor head where else can I get them besides rc aerodyne, I already have the TF composite ones, but want the carbon fibre ones and they are back ordered til July, who else sells a set of 5 that are already balanced? and ready to go, thanks for the info, Steve

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05-17-2013 06:22 PM  5 years agoPost 12
doorman

rrProfessor

Sherwood, Arkansas

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Blade Options
http://www.skyhunterhobbys.com/Roto...CN266075-5S.htm

I think these are the ones that you are looking for...

Also, these have been getting good reviews from all that have tried them:
http://www.allerc.com/spinblades-as...0mm-p-7500.html

Good Luck, Stan

Oh and one other thing... I would suggest a stabi system with any multi... not that they cannot be flown without, because I have, but it just makes things so much more relaxing!!!!

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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05-17-2013 07:28 PM  5 years agoPost 13
Mojave

rrElite Veteran

Palos Verdes, Ca. USA

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X2 on the stabi unit and the spin blades...
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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05-17-2013 07:50 PM  5 years agoPost 14
jusrap

rrNovice

Asia

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I would be looking a Fun-Key H-5722C blades.. http://www.fun-key.com.hk/productshow.asp?showid=183

Life's sweet

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05-29-2013 08:37 AM  5 years agoPost 15
rcjp

rrNovice

Montrose MI. U.S.A.

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swash follwer?
I have the RC Aerodyne 5 blade rotor head and need to find out if there is a better inner swash follwer arm , the one I have has some slop or play that causes the blades to have accessive pitch on the blades , in other words the arm has movement back and forth, the inner casing on the aluminum arm you can see the bearings move a little and the bolt that goes through the bearings also is not a tight fit so the play is too much and causes the swash plate to move back and forth, I did take it apart and used some shim stock and took the play out which made a big difference , but now it is getting slop in it again and causing the blades to have some free play about 1\16 OR less and thus causing some problems on the blades from positive to negative free play, what I need is an arm that has no slop or play and is more heavy duty and would rather have the pinch type block for the 10 mm shaft instead of the set screw type, I guess Iam asking is there a better swash arm follwer that will work for this 10 mm shaft for the RC Aredyne 5 bladed rotor head this one that I have has too much slop in it. Thanks for any info.

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05-29-2013 09:00 AM  5 years agoPost 16
PETER ROB

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Devon UK

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swash follwer?
Most followers get slack to some degree
This is one That I found, it really looks strong
I have taken the shaft part out of a Vario one that got damaged, next project is to machine an outer frame
When I get time that is
Peter R

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05-29-2013 09:57 AM  5 years agoPost 17
rcjp

rrNovice

Montrose MI. U.S.A.

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swash follwer?
Thanks for the info I may be able to take it apart again and try and shim it up again with some better material but I really dont want any play at all if I can help it, that pic you show looks a lot better than mine I will try and post a pic of mine and show the play in it anyway, hope I can cure that problem.

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07-14-2015 04:04 AM  3 years agoPost 18
rcjp

rrNovice

Montrose MI. U.S.A.

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Looking for a set of blades for my vario bell 47
Any one have a set of vario bell 47 blades for sale? Looking for a spare set

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