RunRyder - Ion test flight and 401 gyro

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e-Miniature Aircraft Furion - Razor - Ion-X > Ion test flight and 401 gyro

buster1
Senior Heliman
Location: Manhattan, NY

Hi Guys, was wondering if one of you ION experts can help me with a question -

I went out today to flight test my new ION - got heli. in a hover and tail started glitching in pretty large motions:

Landed and lowered the gain to low setting and it did it again.

I am using the 401 gyro with 9254 - I have heard somewhat from a couple of people that the 401 may not be the best due to its shielding and that the 502 or 601 may be the way to go with this heli.

FYI, gain was set lower after the glitching occured and the I am using good gyro tape and gyro was on firm.

Any suggestions or comments would be appreciated before I go buy the new gyro.

Thank you,
Jeff H.

03-27-2005 Over year old.

sbalder
Senior Heliman
Location: Westland, Michigan

For what it's worth I dumped my GY401-equipped Voyager E yesterday due to a tail failure. It was glitching just a little bit and I landed, checked it out, and couldn't find anything. I took off again and the tail started glitching then gave out and I splatted. After the crash I found a spot where the gyro wire had rubbed through on the carbon frame.

I'd check everything over very carefully and look for frayed wires, loose connector pins, or anything else that may be wrong. Is the gyro old? Has it been crashed before?

Good luck!!!

-Steven Balder

03-27-2005 Over year old.

HOMEPAGE

MinAirChris
Heliman
Location: Sunny Florida

I can suggest two things to do here:

1) Use the metal plate that came with the gyro, in between the sensor and the mounting shelf.

2) Check to make sure the two gears on the counter shaft are properly setscrewed onto the flats and really tight.

Failing those things, get the gyro checked out by Futaba. The 401 works great in the Ion-X.

Chris

Previously known as ChrisS

03-27-2005 Over year old.

xtremercprods
Heliman
Location: Honolulu, HI

I had a GY601+9251 on the Ion initially but replaced it with a GY401+9253. Both worked great and to my surprise, the GY401+9253 I have on now works just as good as the GY601!

The GY601+9251 on my Raptor 50 makes much more of a performance difference than the Ion. I suspect it is because the Raptor 50 has a much weaker tail mechanism than the Ion/Fury.

Anyhow, the GY401 works without a hitch on my Ion so far and I'll continue to use it.

bob

03-27-2005 Over year old.

buster1
Senior Heliman
Location: Manhattan, NY

401

thanks guys, it is an older 401 that has seen some action,
I will check it out and also look at all set screws on the shaft and in the tail rotor gear box,
also check all wires on 401,
Chris, are most guys using a piece of metal between the gyro and mount?

Thanks for everyone's replys,
Jeff

03-27-2005 Over year old.

MinAirChris
Heliman
Location: Sunny Florida

I think within the electric community yes, most use that plate.

I'm really not too sure though if most guys realize what that piece of metal is for. I do know that in the past, when I had a gyro/motor combo that did not play well together, that little piece of metal sometimes made all the difference.

It's not just any metal either, that one has a high nickel content which has a higher ability to block magnetic fields.

In the electronics industry, there is a material that is sometimes used to block electromagnetic radiation, it's called "mu metal". While the company that makes it will not divulge it's exact content, it is known to have a high percentage of nickel. And in some cases, it can really make a difference to sensitive equipment.

I'm rambling, try the plate and see if it helps any. If not, look at those setscrews.

Chris

Previously known as ChrisS

03-27-2005 Over year old.

buster1
Senior Heliman
Location: Manhattan, NY

401 - Chris

chris,
Where can I get that plate, I do not have one? Also, do you mount tape on gyro, then plate, then tape again on bottom of plate then adhere to model?

I checked the set screws up front, but not in tail rotor gear box and there doesn't seem to be a problem - also, when I apply pressure to tail rotor and turn and hold main gear, there does not seem to be any slippage with firm pressure - is this a good test.

Wires don't seem to be frayed at all and all connections seem good in looking at all wires.

So, is it safe to say that some ion's will experience noise with the gyro and some won't - I have the most recent hacker set up, etc.

Thanks for your help,
Jeff

03-28-2005 Over year old.

ernatz
Heliman
Location: ny

That plate only comes with the 601 gyro not the 401.
I cant seem to find it, you should call hobby services
futabas service center at 1-217-398-0007.
Good luck

Ernie

Flying For Fun

03-28-2005 Over year old.

KillerBob
Heliman
Location: Denmark

You might want to check the orientation of the trustbeaings in the tailblade holders. You will get this if one or both are turned wrong, It will feel fine on the ground - but once it is spun up resistance comes and that forces the tailservo to overcompensate

/Killerbob

03-28-2005 Over year old.

HOMEPAGE

MinAirChris
Heliman
Location: Sunny Florida

Hmmm

I am using 401's in both of my current Ion's and they both came with the metal plate. Perhaps Futaba has changed the packing, I'd give hobby services a call and see if they'll send you one.

Yeah, tape, plate, tape then gyro.

Your test for tail slippage sounds fine.

Believe it or not, I think it is the gyro. It seems that some are just more prone to magnetic interference than others. I have had this problem before, done all the usual things then given up and sent in the gyro. Received a new one from Futaba and wa-la, problem gone.

For sure look into Killerbob's thoughts too.

Chris

Previously known as ChrisS

03-28-2005 Over year old.

ernatz
Heliman
Location: ny

Hey Chris,
Maybe they changed something but there must be some
old ones out there because I just bought a 401 from
3DRC and it came with just one piece of mounting tape.
By the way the 401 works fine on my ION-X.

Except that I can't use the gyro setting In the 9zwc2
for gain, it causes tail wag. Must use Gyro ATV
for gain adjustment.
Just my thoughts.

Ernie

Just Flying For Fun

03-28-2005 Over year old.

buster1
Senior Heliman
Location: Manhattan, NY

401

Hi guys, my 401 is a bit older and maybe this is causing the problem,

Thurst bearings are in correctly,

will most likely try the metal plate between gyro and heli. or just get the 601 - hopefully, that should fix my problem,

Thanks for all your suggestions and comments,
Appreciate it,
Jeff

03-28-2005 Over year old.

xtremercprods
Heliman
Location: Honolulu, HI

Ernie,

The GY401 should come with three pieces of mounting tape I believe -- at least the GY401 from the GY401+servo combo. There is no metal plate -- only the GY601 comes with the metal plate that I know of.

You might want to ask your vendor where your two other mounting tapes are.

This is true for current shipments out of Great Planes/Futaba that I know of.

bob

03-28-2005 Over year old.

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e-Miniature Aircraft Furion - Razor - Ion-X > Ion test flight and 401 gyro

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