Register Now

spikeanoid · 11-25-2015, 03:21 PM

I've had a few flights on my Goblin Speed now and have noticed that reaction to pitch inputs is very slow (0.5-1.0 second to change elevation from a hover given max pitch). Servos respond instantly on the bench and I'm not getting any weird glitching. Running on 12s Pulse 65C lipos.

I currently run 2250 RPM governed with Hobbywing Platinum Pro V4 gov (stock settings for now) on stock SAB Speed main and tail blades with 13.5 degrees of pitch. Is it the speed blades giving me slow pitch response? I'm not getting performance anywhere near what I see from some Gob Speed 3D performances.

Unrelated (or maybe not, who knows

), my tail will kick out about 5 degrees to the right/nose left on hard pitch pumps. I've tried upping gain in my transmitter but I start to introduce fast tail wag on hard stops. I'm attributing this more to the lack of 115 tails and an incomplete tail setup in the FBL, no?

Specs:
Savos 2272 tail + 2271 cyclic
HW Plat Pro V4 160A (using internal gov)
720 Speed Mains + ~95mm(?) stock Speed Tails
Spirit Pro FBL
13.5 Degrees pitch
5000mAH 12s
Custom Wound 520KV KDE 535 motor

tdf1946 · 12-01-2015, 12:08 AM

are you running 115's with the speed blades?. Plus iv'e tried different esc's with my speed and he only one to fit the bill was Kosmik smooth thru all rpm changes..plus i'm using Savox 2274 cyclics, Savox 1267 tail and that has made a difference during speed runs,my tail is locked in solid due to the torque of the tail servo

earhythmic · 12-01-2015, 03:03 AM

If you're running the stock speed mains and tails for 3D you're in for a bad time. It's discussed plenty here. Too heavy (cog) and too small, respectively.

I'm running 715 Cyclones mains and 115 tails and get great response and zero tail kick. Running the Hobbywing 160 also governed at your same head speed.

Try some 3D specific blades, you'll notice a world of difference.

spikeanoid · 12-01-2015, 10:08 PM

I bought some Cyclone 715 + Switch 115's on black friday. Hopefully I'll get to try them out this weekend. I had a suspicion the blades were mainly to blame.

What governor settings are you using earhythmic? I seem to recall you using the Platinum v4 governor, same as me.

earhythmic · 12-01-2015, 10:45 PM

My P and I gains for the gov are stock, however I did lower my PWM from 32k to 16k after my over amp shutdown.

11-25-2015, 03:21 PM	#1 (permalink)
spikeanoid Registered Users Join Date: Oct 2012	Slow Pitch Response (+tail kick) I've had a few flights on my Goblin Speed now and have noticed that reaction to pitch inputs is very slow (0.5-1.0 second to change elevation from a hover given max pitch). Servos respond instantly on the bench and I'm not getting any weird glitching. Running on 12s Pulse 65C lipos. I currently run 2250 RPM governed with Hobbywing Platinum Pro V4 gov (stock settings for now) on stock SAB Speed main and tail blades with 13.5 degrees of pitch. Is it the speed blades giving me slow pitch response? I'm not getting performance anywhere near what I see from some Gob Speed 3D performances. Unrelated (or maybe not, who knows), my tail will kick out about 5 degrees to the right/nose left on hard pitch pumps. I've tried upping gain in my transmitter but I start to introduce fast tail wag on hard stops. I'm attributing this more to the lack of 115 tails and an incomplete tail setup in the FBL, no? Specs: Savos 2272 tail + 2271 cyclic HW Plat Pro V4 160A (using internal gov) 720 Speed Mains + ~95mm(?) stock Speed Tails Spirit Pro FBL 13.5 Degrees pitch 5000mAH 12s Custom Wound 520KV KDE 535 motor __________________ Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same. - RR

12-01-2015, 12:08 AM	#2 (permalink)
tdf1946 Registered Users Join Date: Nov 2012	are you running 115's with the speed blades?. Plus iv'e tried different esc's with my speed and he only one to fit the bill was Kosmik smooth thru all rpm changes..plus i'm using Savox 2274 cyclics, Savox 1267 tail and that has made a difference during speed runs,my tail is locked in solid due to the torque of the tail servo __________________ Goblin 770,700,630,630C,570 700 C Goblin Speed Scorpion Power Life too short so Fly

12-01-2015, 03:03 AM	#3 (permalink)
earhythmic Registered Users Join Date: May 2014	If you're running the stock speed mains and tails for 3D you're in for a bad time. It's discussed plenty here. Too heavy (cog) and too small, respectively. I'm running 715 Cyclones mains and 115 tails and get great response and zero tail kick. Running the Hobbywing 160 also governed at your same head speed. Try some 3D specific blades, you'll notice a world of difference. __________________ Goblin 380\|HD500 Destroyed: Urukay\|Goblin Speed DX9\|#652

12-01-2015, 10:08 PM	#4 (permalink)
spikeanoid Registered Users Thread Starter Join Date: Oct 2012	I bought some Cyclone 715 + Switch 115's on black friday. Hopefully I'll get to try them out this weekend. I had a suspicion the blades were mainly to blame. What governor settings are you using earhythmic? I seem to recall you using the Platinum v4 governor, same as me. __________________ Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same. - RR

12-01-2015, 10:45 PM	#5 (permalink)
earhythmic Registered Users Join Date: May 2014	My P and I gains for the gov are stock, however I did lower my PWM from 32k to 16k after my over amp shutdown. __________________ Goblin 380\|HD500 Destroyed: Urukay\|Goblin Speed DX9\|#652

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Register Now

Log-in