Tail can't hold pitch pumps even with 7mm tail upgrade

[Bioblade]

Hi guys,

So I was having some issues with my stock tail holding during pitch pumps, flips, and rolls after installing the HH brushless upgrade. Thought perhaps the Xtreme 7mm Turbo Tail Motor upgrade would be a good solution. Bought it and installed it but the problem has not been resolved. In a steady hover the tail is absolutely locked. Not a single twitch or jitter whatsoever. However, the moment I start pumping the collective it starts to blow out, not into a pirouette, but bad enough for me to loose control sometimes.

Feathering shaft is appropriately tightened. The boom on the xtreme tail is solid and not cracked from what I can see and besides, I've only had it long enough to put it down softly over grass.

I thought perhaps the batteries were my problem but I have tried a few different 45C and 35C lipos (some of which are brand new) in the heli with no change in weak tail-hold flight characteristics.

I'm starting to get discouraged. I've got another Nano with the stock brushed main and tail motors installed and find it to be much more locked-in than what I've done with my brushless upgrade.

I'm tempted to give up and go back to brushed. Any thoughts?

[T_Dogg80]

Originally Posted by Bioblade

Hi guys,

So I was having some issues with my stock tail holding during pitch pumps, flips, and rolls after installing the HH brushless upgrade. Thought perhaps the Xtreme 7mm Turbo Tail Motor upgrade would be a good solution. Bought it and installed it but the problem has not been resolved. In a steady hover the tail is absolutely locked. Not a single twitch or jitter whatsoever. However, the moment I start pumping the collective it starts to blow out, not into a pirouette, but bad enough for me to loose control sometimes.

Feathering shaft is appropriately tightened. The boom on the xtreme tail is solid and not cracked from what I can see and besides, I've only had it long enough to put it down softly over grass.

I thought perhaps the batteries were my problem but I have tried a few different 45C and 35C lipos (some of which are brand new) in the heli with no change in weak tail-hold flight characteristics.

I'm starting to get discouraged. I've got another Nano with the stock brushed main and tail motors installed and find it to be much more locked-in than what I've done with my brushless upgrade.

I'm tempted to give up and go back to brushed. Any thoughts?

Mine also does this. It almost turns 90 degrees. I hope someone has an idea.

[JonJet]

The Xtreme Turbo Tail has never impressed Me...tried it twice

The Oversky 7mm motor is much better

Try reducing pitch servo travel to 65 or so adjust as needed

[firekat]

JonJet:

See that you have made some posts on the 150 boards regarding the Trex 150. How's your experiences with that machine going?

Inquiring minds want to know!

[firekat]

I'm tempted to give up and go back to brushed. Any thoughts?

I have a Nano with the HH BL, Lynx DFC head, aluminum swash, titanium main shaft, and the BLH3602 tail. I am not a heavy 3D person but what I can tell you is this setup fly's so much nicer than the stock one. A lot of it I think is based on the longer tail. Pirouettes are so much nicer and easier to perform. With the stocker, left hand piros are very difficult to perform usually ending up with the Nano skittering out of it to the left and requiring a lot of cyclic to correct. Even left hand banked turns are a problem, it is way more of a challenge to get a decent banked turn to the left out of it.

My blinged Nano fly's so much better than the stocker it's like night and day. I am almost inclined to put the longer tail on the stocker to see how it does. I don't get a lot of tail twitching on the bling, while on the stocker it is much more prevalent.

All this is using the factory settings on a DX6

[JonJet]

Originally Posted by firekat

JonJet:

See that you have made some posts on the 150 boards regarding the Trex 150. How's your experiences with that machine going?

Inquiring minds want to know!

It went well...I got it flying pretty good...and traded it to another HF Member out on the Left Coast

[firekat]

WARNING! THREAD DRIFT!

Thanks for the info! I'm toying with the idea of either getting a Trex 150 or a 180 CFX. Hard decision as both seem to have pluses and minuses.

[JonJet]

Originally Posted by firekat

WARNING! THREAD DRIFT!

Thanks for the info! I'm toying with the idea of either getting a Trex 150 or a 180 CFX. Hard decision as both seem to have pluses and minuses.

In My opinion...anyone who chooses a Trex150 over a Blade 180CFX should be hanged until dead then killed...

Not even close...no comparison is even possible

Myself...I'm going from the 130X to the 450X...just as soon as APO can get it here from Europe

[firekat]

Jeez, I guess you really like the Trex 150!

Well I don't really need to be hung. I was favoring the 180 CFX anyway.

[JonJet]

Originally Posted by firekat

Jeez, I guess you really like the Trex 150!

Well I don't really need to be hung. I was favoring the 180 CFX anyway.

Yeah it was a bear to figure out...seems the tail rotor was spinning on the shaft, and the stock rotors just didn't cut it very well

But I did get it to fly pretty good

I'll stick with My Blade's (really looking forward to the 450X)

[perrybd]

I've had a love/hate relationship with the tails on both my nanos (HH and mild Pjacq). Both of them have solid extend tail booms. I've adjusted pitch travel to 65% with a v throttle curve. It's the best solution I've found so far. Still though when I'm near the end of a battery I have to use less collective or the tail will blow out.

[MariaFan]

I like the BLH3602L boom. The 150mm one.
Absolutely no wag. Looks cool, too.

[nickyd]

Cracked mainshaft can cause this
Hold main gear and try rotating head. If it feels springy, then it needs replaced...

Originally Posted by Bioblade

Hi guys,

So I was having some issues with my stock tail holding during pitch pumps, flips, and rolls after installing the HH brushless upgrade. Thought perhaps the Xtreme 7mm Turbo Tail Motor upgrade would be a good solution. Bought it and installed it but the problem has not been resolved. In a steady hover the tail is absolutely locked. Not a single twitch or jitter whatsoever. However, the moment I start pumping the collective it starts to blow out, not into a pirouette, but bad enough for me to loose control sometimes.

Feathering shaft is appropriately tightened. The boom on the xtreme tail is solid and not cracked from what I can see and besides, I've only had it long enough to put it down softly over grass.

I thought perhaps the batteries were my problem but I have tried a few different 45C and 35C lipos (some of which are brand new) in the heli with no change in weak tail-hold flight characteristics.

I'm starting to get discouraged. I've got another Nano with the stock brushed main and tail motors installed and find it to be much more locked-in than what I've done with my brushless upgrade.

I'm tempted to give up and go back to brushed. Any thoughts?

[blue92ehsi]

vibrations. if the Heli isn't smooth in your hand then it'll never hold. also if you're using blheli code switch to gov arm mode and vcurve the tail