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kimthepilot · 04-27-2012, 07:01 AM

Hi All,

I recently converted my B400 to flybarless using the usual Tarot head + CX-3X1000 combo. I'm also running an Ice Lite 50, Eflite 440H motor, as well as HS65MGs as cyclic servos.

I flew 6 batteries through the heli with the stock "3D Lite" settings, with the collective set up at +/- 10 degrees, and 6 on the cyclic. The heli flew perfectly. I had no problems using the non-digital cyclic servos.

I then went and changed it to +/- 12 degrees on the collective, and had a problem. After a flight, I noticed the pitch of the blades had changed. It seemed as though stock Eflite links are 0.2mm thicker than the ones that came with the Tarot head. As a result, the links pulled out of the Eflite ends just a little bit. I've since changed the links to Eflite ones....

Problem solved? Nope.

Now, when hovering in Idle Up, the heli exhibits momentary left-rolling twitches. Under normal mode, the heli is completely stable... I tried playing with some gains, but couldn't nail down the problem.

I appreciate the help!

kimthepilot

kimthepilot · 04-27-2012, 07:02 AM

(cross posted from the Blade 400 Forum)

Hi All,

I recently converted my B400 to flybarless using the usual Tarot head + CX-3X1000 combo. I'm also running an Ice Lite 50, Eflite 440H motor, as well as HS65MGs as cyclic servos.

I flew 6 batteries through the heli with the stock "3D Lite" settings, with the collective set up at +/- 10 degrees, and 6 on the cyclic. The heli flew perfectly. I had no problems using the non-digital cyclic servos.

I then went and changed it to +/- 12 degrees on the collective, and had a problem. After a flight, I noticed the pitch of the blades had changed. It seemed as though stock Eflite links are 0.2mm thicker than the ones that came with the Tarot head. As a result, the links pulled out of the Eflite ends just a little bit. I've since changed the links to Eflite ones....

Problem solved? Nope.

Now, when hovering in Idle Up, the heli exhibits momentary left-rolling twitches. Under normal mode, the heli is completely stable... I tried playing with some gains, but couldn't nail down the problem.

I appreciate the help!

kimthepilot

Mikej · 04-27-2012, 07:18 AM

Kim,

A lot of people have experienced similar rolls due to static - this unit seems to be prone to static and vibes. I had a similar issue that was 100% sorted by grounding the tail bearings to the boom and then the boom to the motor mount.

Good luck,
Mike

kimthepilot · 04-27-2012, 08:00 AM

Hi Mike,

Static! That makes sense. I'm running a carbon fiber tail boom... That, coupled with the higher RPM could definitely be causing static. I'll try some grounding...

kimthepilot

jabu32 · 04-27-2012, 09:48 AM

How do u ground it? Pic?

Harbormaster · 04-27-2012, 10:27 AM

Quote:

Originally Posted by jabu32

How do u ground it? Pic?

If you do a search of HF you'll come up with lots of info.

Harbormaster · 04-27-2012, 10:31 AM

A FBL heli that hiccups at high RPMs but not lower sounds like a classic case of vibration sensitivity. I'd look into that first, personally.

scott s · 04-27-2012, 10:33 AM

momentary rolling twitches are usualy the result of vibration. Obviously the heli is vibing more in idle 1. What are you using for mounting tape. Did you balance your tail blades also?

TowPilot · 04-27-2012, 01:04 PM

No cross posting please.

Mike

kimthepilot · 04-27-2012, 01:28 PM

Sorry. I wasn't sure which forum was the best.

kimthepilot · 05-02-2012, 07:10 AM

Hi all,

It turned out to be a vibration problem. I re balanced the blades and re-did my tracking, as well as replacing the tail blades. It seems to be holding well now.

When I installed the controller, I used the included foam tape. It seems pretty thin and rigid. Can anyone recommend better gyro mounting tape?

Thanks!

InFocus · 05-02-2012, 05:45 PM

The 3M 4011 outdoor tape (grey in color) works great!

04-27-2012, 07:01 AM	#1 (permalink)
kimthepilot Registered Users Join Date: Feb 2011	Flybarless Blade 400 w/CX-3X1000 Cyclic Problem Hi All, I recently converted my B400 to flybarless using the usual Tarot head + CX-3X1000 combo. I'm also running an Ice Lite 50, Eflite 440H motor, as well as HS65MGs as cyclic servos. I flew 6 batteries through the heli with the stock "3D Lite" settings, with the collective set up at +/- 10 degrees, and 6 on the cyclic. The heli flew perfectly. I had no problems using the non-digital cyclic servos. I then went and changed it to +/- 12 degrees on the collective, and had a problem. After a flight, I noticed the pitch of the blades had changed. It seemed as though stock Eflite links are 0.2mm thicker than the ones that came with the Tarot head. As a result, the links pulled out of the Eflite ends just a little bit. I've since changed the links to Eflite ones.... Problem solved? Nope. Now, when hovering in Idle Up, the heli exhibits momentary left-rolling twitches. Under normal mode, the heli is completely stable... I tried playing with some gains, but couldn't nail down the problem. I appreciate the help! kimthepilot

04-27-2012, 07:02 AM	#2 (permalink)
kimthepilot Registered Users Thread Starter Join Date: Feb 2011	Flybarless Blade 400 w/CX-3X1000 Cyclic Problem (cross posted from the Blade 400 Forum) Hi All, I recently converted my B400 to flybarless using the usual Tarot head + CX-3X1000 combo. I'm also running an Ice Lite 50, Eflite 440H motor, as well as HS65MGs as cyclic servos. I flew 6 batteries through the heli with the stock "3D Lite" settings, with the collective set up at +/- 10 degrees, and 6 on the cyclic. The heli flew perfectly. I had no problems using the non-digital cyclic servos. I then went and changed it to +/- 12 degrees on the collective, and had a problem. After a flight, I noticed the pitch of the blades had changed. It seemed as though stock Eflite links are 0.2mm thicker than the ones that came with the Tarot head. As a result, the links pulled out of the Eflite ends just a little bit. I've since changed the links to Eflite ones.... Problem solved? Nope. Now, when hovering in Idle Up, the heli exhibits momentary left-rolling twitches. Under normal mode, the heli is completely stable... I tried playing with some gains, but couldn't nail down the problem. I appreciate the help! kimthepilot

04-27-2012, 09:48 AM	#5 (permalink)
jabu32 Registered Users My HF Map location Join Date: Jan 2011	How do u ground it? Pic? __________________ Hello My Name Is Joe Blade 130X - Lynx EOX / Blade 300x - AR7200BX, 2213-3585 / Trex 500ESP DFC - AR7200BX, 500MX / Trex 550e DFC - AR7200BX, 600MX / TSA 600e Pro - AR7200BX, 700MX / TBS Discovery FPV - APM, Sunnysky 980kv/ DX8

05-02-2012, 05:45 PM	#12 (permalink)
InFocus Registered Users Join Date: Jun 2011	The 3M 4011 outdoor tape (grey in color) works great! __________________ Current fleet is getting smaller. Blackout Mini-H, WarpQuad 230, Blade 200qx, Nano QX, UM F-27q Stryker, UM P51 Mustang, F4F Wildcat, DX6 radio. Previous fleet: mcpx, 300x, 350qx,450x, qav400, DX7s

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04-27-2012, 07:18 AM	#3 (permalink)
Mikej Registered Users Join Date: Feb 2007 Location: England	Kim, A lot of people have experienced similar rolls due to static - this unit seems to be prone to static and vibes. I had a similar issue that was 100% sorted by grounding the tail bearings to the boom and then the boom to the motor mount. Good luck, Mike

04-27-2012, 08:00 AM	#4 (permalink)
kimthepilot Registered Users Thread Starter Join Date: Feb 2011	Hi Mike, Static! That makes sense. I'm running a carbon fiber tail boom... That, coupled with the higher RPM could definitely be causing static. I'll try some grounding... kimthepilot

04-27-2012, 10:31 AM	#7 (permalink)
Harbormaster Registered Users Join Date: Jan 2011	A FBL heli that hiccups at high RPMs but not lower sounds like a classic case of vibration sensitivity. I'd look into that first, personally.

04-27-2012, 10:33 AM	#8 (permalink)
scott s Registered Users Join Date: Apr 2010	momentary rolling twitches are usualy the result of vibration. Obviously the heli is vibing more in idle 1. What are you using for mounting tape. Did you balance your tail blades also?

04-27-2012, 01:04 PM	#9 (permalink)
TowPilot Join Date: Jun 2008	No cross posting please. Mike

04-27-2012, 01:28 PM	#10 (permalink)
kimthepilot Registered Users Thread Starter Join Date: Feb 2011	Sorry. I wasn't sure which forum was the best.

05-02-2012, 07:10 AM	#11 (permalink)
kimthepilot Registered Users Thread Starter Join Date: Feb 2011	Hi all, It turned out to be a vibration problem. I re balanced the blades and re-did my tracking, as well as replacing the tail blades. It seems to be holding well now. When I installed the controller, I used the included foam tape. It seems pretty thin and rigid. Can anyone recommend better gyro mounting tape? Thanks!

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