HEEEELP!! frenzy 50e headspeed

emberjelly · 12-22-2011, 02:56 AM

Hi, I just ordered a frenzy 50 e with scorpion 630kv 12s motor. How the heck am I gonna set up the headspeed???? On a calculator it says 3000 rpm, the heli would self destruct? How are you guys doing your setup?

Assuming:
40C battery
10 teeth pinion.
90 % efficiency

Result for calculation:
Estimated lowest voltage during flight: 41,40
Lowest RPM (due to voltage and efficiency) : 2630

(calculated for 100% throttle curve)
Hover RPM at beginning of flight: 3327
Hover RPM at middle of flight: 3064
Hover RPM at end of flight: 2957

Thanks,
Jerry

cheif · 12-22-2011, 04:05 AM

I used an RJX 93 tooth main gear on mine to get better ratio. Running on 8s by 2 4s 5000mah a 880kv motor with a head speed of 2200. You have to space out the mixer arms as it will hit the modified main gear at the extreme throws. also need the pinion as it helicut gears. Very happy with this. Can post photo if you like.

yowser · 02-03-2012, 10:00 PM

If you haven't purchased batteries you can look at dropping the cell count. I run my 6hv on 10s and it is great. Are you going to run a governer? You may need to play with the pinion tooth count too. The pinion is the easiest way to manipulate the headspeed.

emberjelly · 02-04-2012, 12:35 AM

I eventually just went with an ultra low KV 700 size motor. a scorpion 4045 HKIII 330 It was mega expensive, but it should give plenty of power.

Cheers,
Jerry

blackbeard · 02-21-2012, 07:42 PM

Hi my setup is stuck main gear and pinion. Motor scorpion 4025 890kv ESC CC 75amp batt 5000mah 8s 40c. In normal mode 2000 rpm. In --IDL 1/ 2100. ---IDL 2/ 2200. running a high governor. Gain set at 40. Throttle curve 42.7% 46.9% 50.5%. I am getting about 8-10 mins flight time not too much 3D. LOVE MY FRENZY {:-) Here is my video hope it help. http://youtu.be/cJgEXb0Jmkc

emberjelly · 02-23-2012, 03:42 AM

HI,
Looks cool, just note you are trading off some performance and straining your ESC at that low %. 80% is the recommended minimum.

I will post a vid of mine. But my dog is sick at the moment and I can't go to the field

blackbeard · 02-23-2012, 02:12 PM

Yes you are right. But i am not a hard 3Der. Ok up my setting abit up to 88.9% max.

emberjelly · 02-25-2012, 03:37 PM

Cool. How did it go with the higher hs?

blackbeard · 02-27-2012, 08:31 PM

It do not go well 2 much hs blue the tail hub apart. Got it down without crashing it. Keeping the hs below 23. Hope your frend feeling better.

emberjelly · 02-28-2012, 10:53 PM

woah that sucks man, sorry. nice job landing it though.

12-22-2011, 02:56 AM	#1
emberjelly Registered Users Join Date: Apr 2010 Location: Australia	HEEEELP!! frenzy 50e headspeed Hi, I just ordered a frenzy 50 e with scorpion 630kv 12s motor. How the heck am I gonna set up the headspeed???? On a calculator it says 3000 rpm, the heli would self destruct? How are you guys doing your setup? Assuming: 40C battery 10 teeth pinion. 90 % efficiency Result for calculation: Estimated lowest voltage during flight: 41,40 Lowest RPM (due to voltage and efficiency) : 2630 (calculated for 100% throttle curve) Hover RPM at beginning of flight: 3327 Hover RPM at middle of flight: 3064 Hover RPM at end of flight: 2957 Thanks, Jerry

02-03-2012, 10:00 PM	#3
yowser Registered Users Join Date: Apr 2009 Location: Palmetto, Florida	If you haven't purchased batteries you can look at dropping the cell count. I run my 6hv on 10s and it is great. Are you going to run a governer? You may need to play with the pinion tooth count too. The pinion is the easiest way to manipulate the headspeed. __________________ MA eXcell 450 Mini VBar Blue Pro Logo 500 mini V-bar Compass 6HV BeastX Heli bug 600, beast x, RJX pipe on Coleman.

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12-22-2011, 04:05 AM	#2
cheif Registered Users Join Date: Sep 2011 Location: Perth Western Australia	I used an RJX 93 tooth main gear on mine to get better ratio. Running on 8s by 2 4s 5000mah a 880kv motor with a head speed of 2200. You have to space out the mixer arms as it will hit the modified main gear at the extreme throws. also need the pinion as it helicut gears. Very happy with this. Can post photo if you like.

02-04-2012, 12:35 AM	#4
emberjelly Registered Users Thread Starter Join Date: Apr 2010 Location: Australia	I eventually just went with an ultra low KV 700 size motor. a scorpion 4045 HKIII 330 It was mega expensive, but it should give plenty of power. Cheers, Jerry

02-21-2012, 07:42 PM	#5
blackbeard Registered Users Join Date: Mar 2009 Location: mississauga ont canada	Hi my setup is stuck main gear and pinion. Motor scorpion 4025 890kv ESC CC 75amp batt 5000mah 8s 40c. In normal mode 2000 rpm. In --IDL 1/ 2100. ---IDL 2/ 2200. running a high governor. Gain set at 40. Throttle curve 42.7% 46.9% 50.5%. I am getting about 8-10 mins flight time not too much 3D. LOVE MY FRENZY {:-) Here is my video hope it help. http://youtu.be/cJgEXb0Jmkc

02-23-2012, 03:42 AM	#6
emberjelly Registered Users Thread Starter Join Date: Apr 2010 Location: Australia	HI, Looks cool, just note you are trading off some performance and straining your ESC at that low %. 80% is the recommended minimum. I will post a vid of mine. But my dog is sick at the moment and I can't go to the field

02-23-2012, 02:12 PM	#7
blackbeard Registered Users Join Date: Mar 2009 Location: mississauga ont canada	Yes you are right. But i am not a hard 3Der. Ok up my setting abit up to 88.9% max.

02-25-2012, 03:37 PM	#8
emberjelly Registered Users Thread Starter Join Date: Apr 2010 Location: Australia	Cool. How did it go with the higher hs?

02-27-2012, 08:31 PM	#9
blackbeard Registered Users Join Date: Mar 2009 Location: mississauga ont canada	It do not go well 2 much hs blue the tail hub apart. Got it down without crashing it. Keeping the hs below 23. Hope your frend feeling better.

02-28-2012, 10:53 PM	#10
emberjelly Registered Users Thread Starter Join Date: Apr 2010 Location: Australia	woah that sucks man, sorry. nice job landing it though.