Trex 150 tail issues

[Nick_C]

Hi

I have a Trex 150 and when i give it any amount of collective the tail moves about 45 degrees to right,ive tried adjusting tail precomp up and down from 2 lights to 4 lights,doesn't make any difference,also i have lynx 47mm tail prop on over standard one.Anyone any ideas please. Thanks

[kenny d]

What tx are you using & what have you set the gyro at , Kd

[coolice]

Hey.

How much collective pitch are you running? Too much can give the tail a hard time during any pitch pump type manoeuvres.

Has the model had a crash or knock? Could the main shaft bearings be a little rough/damaged and be putting more drag on the model.
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[Nick_C]

What tx are you using & what have you set the gyro at , Kd

Hi,i am using dx9, gyro set at 67% on all modes

[Nick_C]

Hey.

How much collective pitch are you running? Too much can give the tail a hard time during any pitch pump type manoeuvres.

Has the model had a crash or knock? Could the main shaft bearings be a little rough/damaged and be putting more drag on the model.
.

Hi,i am 70/70 on the pitch,had small crash main and fethering shaft replaced and boom and servo

[Nick_C]

Hi Ian,i noticed in another post you offered to do the blheli mod on trex 150,do you know roughly what sort of costs are involved,thanks

[coolice]

Hi,i am 70/70 on the pitch,had small crash main and fethering shaft replaced and boom and servo

Hi Ian,i noticed in another post you offered to do the blheli mod on trex 150,do you know roughly what sort of costs are involved,thanks

Hey Buddy.

When I next run inside, I'll check my DSX12 model memory settings for my 150. Be a good comparison with the gyro gain and pitch travel.

With the BLheli mod, the software costs nothing as it's freely given out, a small cost would come if you wanted to have a handheld programmer for example. You can use a cheap tool stick;

USB Programmer for Micro Helicopter ESC

To flash the firmware and then make any changes to the various parameters from your laptop/PC, or you can program an Arduino and LCD shield to use as a field programmer, this then acts like the Vbar control panel where you plug it in, access & change settings then fly.

I built mine from one of these;

SainSmart UNO R3 Improved Ver + Graphic LCD4884 Shield Starter Kit For Arduino | eBay

It's cheap enough, then I added a 2s balance connector in the side of the case I brought so I can power the unit from a spare 150 battery out on the field. While at home, I can connect it to a USB port and this provides power and then uses the Arduino as the interface between PC and MSR unit.

If you wanted me to, I could do it for you no problem, adding the small connectors to the MRS unit and grabbing you a tool stick or the Arduino.
As above, as long as you bear in mind there is risks, like jail breaking/rooting mobile phones, but it's pretty straight forward, the only hiccup I had was making sure I was using the right port on the PC to see the Arduino interface.

Another good link;

HeliFreak - View Single Post - Finally ordered one
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