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Real Raptors . Mikado Modellhubschrauber . GrandRC

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Flybarless Rotor Head Systems > Flybarless 600n using gy401's
 
 
the_jackal46464
Senior Heliman
Location: Preston & Guildford, UK

I'm in the middle of converting my trex 600n the flaybarles, i was going with the csm flybarless system, then i relised i had a couple of spare gy401's, would it be possible to swap the csm 720's for the 401's or are the 401's not really up to the job, just trying to save a bit of cash cos i'm a tight arse, will still be using the cylock tho.
10-07-2007 Over year old.
 
 
Super-Hornet
Veteran
Location: Singapore

It should not be any problem BUT remember to turn off the heading hold function.

TRex 600n is eCCPM 120 heli... that mean u need onboard eCCPM mixer. Do u have those?

Note: I use 2 pieces of GWS PG-03 gyro for all my flybarless and multibladed TRex 450s

SH
10-08-2007 Over year old.
 
 
marc28
Senior Heliman
Location: new york

You want to use the csm 720's and the cyclock mixer.The 720 allows you to change all of it's parameters via laptop. You can't do that with the 401
10-08-2007 Over year old.
 
 
the_jackal46464
Senior Heliman
Location: Preston & Guildford, UK

Thanks for you input, just wondering as this is my first flybarless, why can't the gyros be in heading hold mode, just trying to get my head around how it works. I will be using a eCCPM mixer aswell
10-08-2007 Over year old.
 
 
Super-Hornet
Veteran
Location: Singapore

The purpose of those gyros is to "mimic" the behavior of normal flybar+weight (weight is from paddles itself).

When u use heading hold, the behavior will not be like with flybar+weight...because it will lock on to one direction. Normal gyro will return to neutral position (level swashplate)... just like flybar.

SH
10-08-2007 Over year old.
 
 
the_jackal46464
Senior Heliman
Location: Preston & Guildford, UK

that makes sense, now you have said it, now just got to get my head round the wiring, not got the eccpm mixer yet so not sure what plugs where till i get that,
10-08-2007 Over year old.
 
 
nicco
Veteran
Location: Sweden

It is a huge different between the behavior of a tail and the head. I had to change ALL parameters in the CMS gyro, and I changed them a lot, not just some tweaking.

I suggest not using a 401 gyro, It will probably result in a crash...

Btw, the CSM gyro is running in HH mode.

/N
10-08-2007 Over year old.
 
 
the_jackal46464
Senior Heliman
Location: Preston & Guildford, UK

What makes the csm 720 diffenernt from a gy401, why would the 401 result in a crash, they are both gyro's doing what i assum is the same thing, I really have no experience in flyarless so i haven't got a clue
10-08-2007 Over year old.
 
 
Jay1
Veteran
Location: Colorado Springs

Quote 
You want to use the csm 720's and the cyclock mixer.The 720 allows you to change all of it's parameters via laptop. You can't do that with the 401


I believe this is the key because you can tweek it to properly tune the head so it works correctly.

Jay
10-08-2007 Over year old.
 
 
the_jackal46464
Senior Heliman
Location: Preston & Guildford, UK

So i've got to buy a laptop aswell, this is turning out to be expensive
10-08-2007 Over year old.
 
 
J3DI
Veteran
Location: Oswestry (52.865648N 3.033982W)

The requirements for a gyro used on the rotorhead are wildly different to one used on the tail. For this reason use SL720's, you will need to modify their internal parameters for your application but lots of people are doing this now and are feeding back information. If you want more inf then visit the RealRaptors website knowledge database at:-

http://www.real-kbase.co.uk/csm.html

This should give you some more insight. Also do a search for posts by ColinMill (guy behind CSM).

Your call is important to us.

If it's so important, answer the f*ckin phone!
10-08-2007 Over year old.
 
 
the_jackal46464
Senior Heliman
Location: Preston & Guildford, UK

Thanks J3DI, i have read through the stuff on realraptors and now understand that GY401's aren't really suitable, Can also see that it is going to be a pain not having a laptop and not being able to adjust the gyros down the field, Mind you both these thing haven't put me off doing a flybarless head, just need to do alot more research
10-08-2007 Over year old.
 
 
LoopZilla
Heliman
Location: Melbourne, FL

Since you are still game, and since you are in research mode, you might want to find out the difference between a system using two gyros, and a system utilizing an inertial sensor set. The result is quite different, especially in this application.

I'm not too sure of any good online resources for this info, but someone here might chime in.

LoopZilla
10-09-2007 Over year old.
HOMEPAGE  
 
 
Super-Hornet
Veteran
Location: Singapore

I haven't read the information from the above link yet but I think it depend on what avionics u are using it.

If u are using CSM Cyclock, then it is better to go with CSM gyro for compatibility and tuning purpose.

If u are using on normal mCCPM or Helitronix, then I believe GY401 should be ok....except u have to bring it down to the ground for each tuning.

If u are using Mikado V-Stabi, then it is either use their 3 axis gyro or other gyro.

If u are using plain old onboard eCCPM mixer, then so long as GY401 is compatible with it, then it is ok. GY401 is NOT COMPATIBLE to quite a number of V-Tail mixer. When connected, the gyro doesn't response well.

SH
10-09-2007 Over year old.
 
 
the_jackal46464
Senior Heliman
Location: Preston & Guildford, UK

Having never used a onboard eCCPM mixer (always used the transmitter mixing) i don't know of any others apart from the csm,
10-09-2007 Over year old.
 
 
simarRC
Senior Heliman
Location: Toronto, Ontario, Canada

another thought, why not use a gy240?

MAAC #76893
10-12-2007 Over year old.
HOMEPAGE  
 
 
MrMel
Elite Veteran
Location: Lidingo, Sweden

401's have been tried,they are not good enough for 3D, nor is the 240.

You can find some info over at RCGroups.
10-12-2007 Over year old.
 
 
Super-Hornet
Veteran
Location: Singapore

I did try GY240, GY401 and GWS PG-03 on my flybarless before.

Surprisingly PG-03 has the same, if not faster response than GY401. GY240 is too slow response.

SH
10-13-2007 02:11 AM
 
 
the_jackal46464
Senior Heliman
Location: Preston & Guildford, UK

I have got 2 csm 720's now, well i will have when this bloody postal strike ends, Reason i decided to go for the csm's is that there seems to be alot more information around for them being used in a flybarless heli than any other gyro, and this being my first flybarless that will be a great help
10-13-2007 11:38 AM
 
 
Super-Hornet
Veteran
Location: Singapore

Yes, if u can afford it, then it maybe wise to get it because u will have more help from people who used than other gyro.

SH
10-13-2007 11:40 AM
 
 
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Flybarless Rotor Head Systems > Flybarless 600n using gy401's
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