OS .91HZ, Align .91H "like OS .91 SZ-H" mixture needle positions.

HeliSmith · 09-20-2008, 07:47 PM

Ok all I really have to go off of is the internet. At 2.5 turns high and low it seems rich and this is the break in if I am reading the manual right. At 2 turns out and the mid needle closed all the way or at 2 turns like the high needle it gets hot quick but seems to run great.

Where am I supposed to be? Do these things just run a bit hotter? Uncomfortable on the back plate in 4 or 5 seconds at 1 minute of 1872 HS. I shut it down I need to figure out what's up.

Mike Fortin · 09-20-2008, 09:17 PM

There is no way to tell you what your needle settings should be. I don't think there are any 2 motors that have the same settings.

You simply have to go by sound and feel.

My needles are at 1 1/2 on the high and 1 1/4 on the low. I am running 1980 on the head and motor is around 205 degrees.

There are many variables such altitude, atmospheric conditions, fuel, pipe etc...

HeliSmith · 09-20-2008, 09:57 PM

I know I just wanted to hear other settings so I can understand how people are using the high and mid or mid at all. Cool thanks

captain crash · 09-21-2008, 01:52 AM

Hi, my hz seems to be making good power, but i am a bit lost, as to what range, each needle covers.
does the mid range go from 1/4 to 3/4 ? and where does the top end start kicking in?????
thank you Derek

09-20-2008, 07:47 PM	#1
HeliSmith Registered Users My HF Map location Join Date: May 2007 Location: Chico, California	OS .91HZ, Align .91H "like OS .91 SZ-H" mixture needle positions. Ok all I really have to go off of is the internet. At 2.5 turns high and low it seems rich and this is the break in if I am reading the manual right. At 2 turns out and the mid needle closed all the way or at 2 turns like the high needle it gets hot quick but seems to run great. Where am I supposed to be? Do these things just run a bit hotter? Uncomfortable on the back plate in 4 or 5 seconds at 1 minute of 1872 HS. I shut it down I need to figure out what's up. __________________ *(Compass Warp 360 w/Stock Motor (17t) running from a YGE60 governed at 3200RPM by the Vbar Black, sporting MKS DS95 on cyclic and JR3500G on tail)* Proud Field Representative for the following To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

09-20-2008, 09:17 PM	#2
Mike Fortin EPIC Helis My HF Map location Join Date: Apr 2004 Location: Orlando, FL	There is no way to tell you what your needle settings should be. I don't think there are any 2 motors that have the same settings. You simply have to go by sound and feel. My needles are at 1 1/2 on the high and 1 1/4 on the low. I am running 1980 on the head and motor is around 205 degrees. There are many variables such altitude, atmospheric conditions, fuel, pipe etc... __________________ ______________________________ Mike Fortin www.EPICHelis.com

09-20-2008, 09:57 PM	#3
HeliSmith Registered Users Thread Starter My HF Map location Join Date: May 2007 Location: Chico, California	I know I just wanted to hear other settings so I can understand how people are using the high and mid or mid at all. Cool thanks __________________ *(Compass Warp 360 w/Stock Motor (17t) running from a YGE60 governed at 3200RPM by the Vbar Black, sporting MKS DS95 on cyclic and JR3500G on tail)* Proud Field Representative for the following To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

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09-21-2008, 01:52 AM	#4
captain crash Registered Users Join Date: Mar 2007 Location: LIVERPOOL UK	Hi, my hz seems to be making good power, but i am a bit lost, as to what range, each needle covers. does the mid range go from 1/4 to 3/4 ? and where does the top end start kicking in????? thank you Derek