Telebee Gyro setup

helivsFMX · Nov 03, 2009, 11:48 PM

So I know there are lots of discussions on setting up a gyro properly but they are confusing so I am wondering if anyone can complete this thought...

So to set up my telebee on my HK450, i have the servo lightly clamped to the tail boom, rudder trim at 0, gain at 0% (rate mode), then i initialize the servo (power on radio), move the servo clamp until the tail has zero pitch. This is easiest done by folding both tail blades to one direction so you can easily see when the blades have the same pitch. Once that is set, I clamped the servo in place. Then I set the end points so no binding (with the gyro ATV setting). Went and test flew and it is nearly perfect. I just have a very slight kreep counter clockwise. So I need to move the servo very slightly forward.

So question is, can I do that with trim? I just read somewhere that you cant use rudder channel trim in HH mode. is that true? Do I need to trim the rudder in normal mode each time I take off, then flip to HH once it is trimmed? I just read that that works best for piezo gyro's. Any input is appreciated.

Thanks,
James

prop bender · Nov 03, 2009, 11:58 PM

Quote:

Originally Posted by helivsFMX

So I know there are lots of discussions on setting up a gyro properly but they are confusing so I am wondering if anyone can complete this thought...

So to set up my telebee on my HK450, i have the servo lightly clamped to the tail boom, rudder trim at 0, gain at 0% (rate mode), then i initialize the servo (power on radio), move the servo clamp until the tail has zero pitch. This is easiest done by folding both tail blades to one direction so you can easily see when the blades have the same pitch. Once that is set, I clamped the servo in place. Then I set the end points so no binding (with the gyro ATV setting). Went and test flew and it is nearly perfect. I just have a very slight kreep counter clockwise. So I need to move the servo very slightly forward.

So question is, can I do that with trim? I just read somewhere that you cant use rudder channel trim in HH mode. is that true? Do I need to trim the rudder in normal mode each time I take off, then flip to HH once it is trimmed? I just read that that works best for piezo gyro's. Any input is appreciated.

Thanks,
James

Can make the adjustment with rudder control rod clevis? You can get the adjustment much closer that way

PB

pmackenzie · Nov 04, 2009, 12:19 AM

Setup has almost nothing to do with kreep/drift.
It is a result of the gyro not properly measuring "zero" and/or not properly compensating for thermal issues as it warms up.
Very simple test, power everything up. If the tail slider moves to one side then the heli will drift. If it stays centred then it won't drift. The faster it moves the worse the drift will be.
I had the Telebee and it drifted badly.
Get a G401B. Much less drift. Still a tiny bit compared to a Futaba or Spartan, but way better than the Telebee. Less than $20 shipped from DX.
http://www.dealextreme.com/details.dx/sku.20020

Having said that, if you are flying Spektrum make sure you re-bind so that the gyro will get the correct rudder signals on power up. But if that does not work then get a new/better gyro.

Pat MacKenzie

hitz · Nov 04, 2009, 03:47 AM

I'm also using Telebee gyro on my Neon FP. No matter how you set it also it will drift abit according to expert flyer around my place. But once FF you won't notice it already.

helivsFMX · Nov 04, 2009, 10:01 AM

thats kind of what i thought was going to be the case... Its funny how some say the Telebee is a great gyro, and some say it sucks. It is decent from what I would say... About the same as any other rate gyro. I definitely wouldn't call it a heading hold gyro...

Ok thanks for the help guys. I messed around a little bit after flying a pack to try to get it to hold a bit better, but still no luck. Just a bit of creep. It probably takes about about 15 sec to turn 90 degrees in a hover with the creep I have. Does that sound normal?

I need more money for this hobby!

Roto Rob · Nov 04, 2009, 04:30 PM

http://www.telebee.com.hk/Download/G...nstruction.jpg
The manual instructions are good at getting a fairly drift free tail. Paragraph on letting it sit turned on for 5 minutes, and restarting it, should be done before setting the subtrim.
Main idea is to set subtrim in HH mode, and trim with the linkage in rate mode. Then repeat if needed.

dze · Nov 04, 2009, 04:44 PM

i set it up with about 25% gain thats about the middle of rate mode get it hovering and slide the servo on the boom until its close .. 0 would be 100% gain in rate .. but yes use trim is fine to polish it off .. i stopped worrying about creep and subtrim over a year ago with a telebee i fly them daily and theyre solid in the air and its definitely not too finicky about setup .. you can chase creep until you go crosseyed if you worry about it but it only does it on the ground

set the linkage to get it around 80% electronic gain and itl be titties.

helivsFMX · Nov 04, 2009, 04:50 PM

Roto Rob,

I have that manual that came with the gyro and tried to use that to set up. Funny how it doesn't talk about making sure the pitch is zero when the servo is at its neutral position... That seems to be the most important thing. But anyways I reread the manual, and I think I see see what you are saying. I'll try the subtrim again and see what happens.

Thanks again.

Roto Rob · Nov 04, 2009, 05:03 PM

The pitch at zero with a neutral servo may not be desired. Since most of the time in flight it will have pitch. It would put you off to one side of the servo movement in flight, and need trim that would cause drift. The servo wheel is traveling in an arc so it slows the linkage travel on each side, and fastest in the center. Ok with a fast enough servo to be mostly on the slower sides.
Some where near flying pitch is best at servo neutral with this type of gyro, in my experience.

QiW · Nov 04, 2009, 05:25 PM

Quote:

Originally Posted by helivsFMX

thats kind of what i thought was going to be the case... Its funny how some say the Telebee is a great gyro, and some say it sucks. It is decent from what I would say... About the same as any other rate gyro. I definitely wouldn't call it a heading hold gyro...

Ok thanks for the help guys. I messed around a little bit after flying a pack to try to get it to hold a bit better, but still no luck. Just a bit of creep. It probably takes about about 15 sec to turn 90 degrees in a hover with the creep I have. Does that sound normal?

I need more money for this hobby!

90 degrees in 15secs is way way too much drift
i had a telebee (seems destroyed in a crashed although physically it looks fine) on a compy CP (a very temperamental heli) .. it holds quite well .. i had gain set to about 50% in ATV on a dx7 .. drift was never an obvious issue although there is drift .. i would say maybe about 5 degrees in 30 seconds

just set it up in rate mode (move the rudder servo holder until u barely get any drift in a hover) .. put it into HH mode and set your travel limits .. use sub trim to trim off whatever little drift there is ... done !!!

guitaramp68 · Nov 04, 2009, 05:40 PM

i ordered the mks-191 for my hk 450,how does this compare to the telebee.
this is my first gyro/heli. mastered the cp pro and cx.should there something i should know.or heads up of what to look out for.sorry for getting of topic.
i was going to go with the TB,but when instead with the mks191.hope i dont regret it.
thanx amp

dze · Nov 04, 2009, 06:40 PM

****************

pmackenzie · Nov 04, 2009, 09:18 PM

Quote:

Originally Posted by Roto Rob

http://www.telebee.com.hk/Download/G...nstruction.jpg
The manual instructions are good at getting a fairly drift free tail. Paragraph on letting it sit turned on for 5 minutes, and restarting it, should be done before setting the subtrim.
Main idea is to set subtrim in HH mode, and trim with the linkage in rate mode. Then repeat if needed.

The problem with mine was that it required re-trimming throughout the flight. Then next flight it would have cooled down again and be way off the other way. Other than that it had a nice feel and good stops, but the G401B is way better, and cheaper as well.

I still have the Telebee, but would not even give it away. It would be OK in rate mode in an airplane.

Pat MacKenzie

Roto Rob · Nov 04, 2009, 10:38 PM

Yes, they basic Telebee is a little behind the newer design's.

dze · Nov 05, 2009, 10:31 AM

I wouldnt put them behind much if theyre set up right maybe a logitech gp750 or gy401 .. anyone actually interested in using a telebee they do work great, overthink it and it will give you greif .. i fly almost exclusively telebees on all my helis and i have a gy401/9257 on one 450 and i fly mild 3d and fast forward backwards, some wind doesnt bother me .. telebee works fine, the gy401 wont kick the tail as much but its not a big diff im talking maybe the tail kicks over 2" with sharp collective stabs on the telebee so what, tail blow outs never, retrimming? i rarely touch a rudder trim unless ive changed somthing else between flights, curves, blades, heli weight ect. .. all im saying is if theres a problem i doubt its the gyro. btw i use no subtrim on any of the 4 helis that i fly with a telebee and they all creep on the ground. The helis dont drift out not even throughout a pack, nope. The nose may ease over a few degrees with a 30 second hover not touching the rudder but thats not drift in my book, thats a heli not being flown.

Nov 03, 2009, 11:48 PM	#1
helivsFMX Registered User Join Date: Mar 2009 Location: Arizona USA Posts: 241	Telebee Gyro setup So I know there are lots of discussions on setting up a gyro properly but they are confusing so I am wondering if anyone can complete this thought... So to set up my telebee on my HK450, i have the servo lightly clamped to the tail boom, rudder trim at 0, gain at 0% (rate mode), then i initialize the servo (power on radio), move the servo clamp until the tail has zero pitch. This is easiest done by folding both tail blades to one direction so you can easily see when the blades have the same pitch. Once that is set, I clamped the servo in place. Then I set the end points so no binding (with the gyro ATV setting). Went and test flew and it is nearly perfect. I just have a very slight kreep counter clockwise. So I need to move the servo very slightly forward. So question is, can I do that with trim? I just read somewhere that you cant use rudder channel trim in HH mode. is that true? Do I need to trim the rudder in normal mode each time I take off, then flip to HH once it is trimmed? I just read that that works best for piezo gyro's. Any input is appreciated. Thanks, James

Nov 04, 2009, 06:40 PM	#12
dze Registered User Join Date: Jan 2008 Posts: 4,850	**************** Last edited by dze; Nov 04, 2009 at 08:48 PM. Reason: alittle too amped up

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Nov 04, 2009, 12:19 AM	#3
pmackenzie Registered User Join Date: Dec 2002 Location: Toronto (Don Mills), Canada Posts: 7,549	Setup has almost nothing to do with kreep/drift. It is a result of the gyro not properly measuring "zero" and/or not properly compensating for thermal issues as it warms up. Very simple test, power everything up. If the tail slider moves to one side then the heli will drift. If it stays centred then it won't drift. The faster it moves the worse the drift will be. I had the Telebee and it drifted badly. Get a G401B. Much less drift. Still a tiny bit compared to a Futaba or Spartan, but way better than the Telebee. Less than $20 shipped from DX. http://www.dealextreme.com/details.dx/sku.20020 Having said that, if you are flying Spektrum make sure you re-bind so that the gyro will get the correct rudder signals on power up. But if that does not work then get a new/better gyro. Pat MacKenzie

Nov 04, 2009, 03:47 AM	#4
hitz BeE fYiNg Join Date: Mar 2009 Location: EaRtH Posts: 152	I'm also using Telebee gyro on my Neon FP. No matter how you set it also it will drift abit according to expert flyer around my place. But once FF you won't notice it already.

Nov 04, 2009, 10:01 AM	#5
helivsFMX Registered User Join Date: Mar 2009 Location: Arizona USA Posts: 241	thats kind of what i thought was going to be the case... Its funny how some say the Telebee is a great gyro, and some say it sucks. It is decent from what I would say... About the same as any other rate gyro. I definitely wouldn't call it a heading hold gyro... Ok thanks for the help guys. I messed around a little bit after flying a pack to try to get it to hold a bit better, but still no luck. Just a bit of creep. It probably takes about about 15 sec to turn 90 degrees in a hover with the creep I have. Does that sound normal? I need more money for this hobby!

Nov 04, 2009, 04:30 PM	#6
Roto Rob Registered User Join Date: Dec 2005 Location: Denver, CO Posts: 3,079	http://www.telebee.com.hk/Download/G...nstruction.jpg The manual instructions are good at getting a fairly drift free tail. Paragraph on letting it sit turned on for 5 minutes, and restarting it, should be done before setting the subtrim. Main idea is to set subtrim in HH mode, and trim with the linkage in rate mode. Then repeat if needed.

Nov 04, 2009, 04:44 PM	#7
dze Registered User Join Date: Jan 2008 Posts: 4,850	i set it up with about 25% gain thats about the middle of rate mode get it hovering and slide the servo on the boom until its close .. 0 would be 100% gain in rate .. but yes use trim is fine to polish it off .. i stopped worrying about creep and subtrim over a year ago with a telebee i fly them daily and theyre solid in the air and its definitely not too finicky about setup .. you can chase creep until you go crosseyed if you worry about it but it only does it on the ground set the linkage to get it around 80% electronic gain and itl be titties.

Nov 04, 2009, 04:50 PM	#8
helivsFMX Registered User Join Date: Mar 2009 Location: Arizona USA Posts: 241	Roto Rob, I have that manual that came with the gyro and tried to use that to set up. Funny how it doesn't talk about making sure the pitch is zero when the servo is at its neutral position... That seems to be the most important thing. But anyways I reread the manual, and I think I see see what you are saying. I'll try the subtrim again and see what happens. Thanks again.

Nov 04, 2009, 05:03 PM	#9
Roto Rob Registered User Join Date: Dec 2005 Location: Denver, CO Posts: 3,079	The pitch at zero with a neutral servo may not be desired. Since most of the time in flight it will have pitch. It would put you off to one side of the servo movement in flight, and need trim that would cause drift. The servo wheel is traveling in an arc so it slows the linkage travel on each side, and fastest in the center. Ok with a fast enough servo to be mostly on the slower sides. Some where near flying pitch is best at servo neutral with this type of gyro, in my experience.

Nov 04, 2009, 05:40 PM	#11
guitaramp68 guitarflyer Join Date: Feb 2009 Posts: 647	i ordered the mks-191 for my hk 450,how does this compare to the telebee. this is my first gyro/heli. mastered the cp pro and cx.should there something i should know.or heads up of what to look out for.sorry for getting of topic. i was going to go with the TB,but when instead with the mks191.hope i dont regret it. thanx amp

Nov 04, 2009, 10:38 PM	#14
Roto Rob Registered User Join Date: Dec 2005 Location: Denver, CO Posts: 3,079	Yes, they basic Telebee is a little behind the newer design's.

Nov 05, 2009, 10:31 AM	#15
dze Registered User Join Date: Jan 2008 Posts: 4,850	I wouldnt put them behind much if theyre set up right maybe a logitech gp750 or gy401 .. anyone actually interested in using a telebee they do work great, overthink it and it will give you greif .. i fly almost exclusively telebees on all my helis and i have a gy401/9257 on one 450 and i fly mild 3d and fast forward backwards, some wind doesnt bother me .. telebee works fine, the gy401 wont kick the tail as much but its not a big diff im talking maybe the tail kicks over 2" with sharp collective stabs on the telebee so what, tail blow outs never, retrimming? i rarely touch a rudder trim unless ive changed somthing else between flights, curves, blades, heli weight ect. .. all im saying is if theres a problem i doubt its the gyro. btw i use no subtrim on any of the 4 helis that i fly with a telebee and they all creep on the ground. The helis dont drift out not even throughout a pack, nope. The nose may ease over a few degrees with a 30 second hover not touching the rudder but thats not drift in my book, thats a heli not being flown.