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Align T-REX 600N 700N > T-REX 700N Needle Settings - Fiddle with the Middle or aim High?
 
 
Rockohaulic
Elite Veteran
Location: Valencia, CA, USA, 3rd Rock from the Sun

My Posts This: Topic  Forum		So my Trex 700N makes good power (maybe not great, but good), and runs smooth.

But the temp on my YS91 SR is always low - in the 90's on the back plate, and only about 140 or so on the head.

My hi needle is several clicks less than 1 turn.

Mid needle is about 1 1/4 turns.

Should I try adjusting the hi needle or the mid needle???

I got a helicopter for my girlfriend,
Hope she doesn't outfly me soon!
10-31-2009 01:02 AM
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george0079
Elite Veteran
Location: Tired of the politics

My Posts This: Topic  Forum		I would put the high needle up to 1 turn, and bring the mid needle down 1 click at a time..

But that's me.....

I can please 1 person a day.
It's NOT your day.
Tomorrow's not lookin good, either
10-31-2009 01:09 AM
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flyboy907
Senior Heliman
Location: woodstock, ga

My Posts This: Topic  Forum		yeah, I would open up the main untill you notice that on full climbouts its getting bogging and then go back in untill you get good climbouts, then do multiple aileron tic tocks and see how the mid power feels, you may be to rich on mid and lean on high if I was to guess. I usually open my mid up fairly rich and tune high end first then mid. I aim for around 200F on the head.

FLY HARD FLY FAST DON'T CRASH
10-31-2009 05:31 PM
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inkspot1967
rrProfessor
Location: cranston ri.

My Posts This: Topic  Forum		you dont check the temp on the back plate or the head itself on a ys check temps on the block just before the head

Crashing hitting the ground is easy...Hitting the windsock takes skill..!
FBH Synergy N9
Rave
10-31-2009 05:42 PM
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Ghostrider
Elite Veteran
Location: San Diego, CA

My Posts This: Topic  Forum
Quote 
you dont check the temp on the back plate or the head itself on a ys check temps on the block just before the head

+1

Sam Gammo
It's not your altitude, it's your ATTITUDE!
11-01-2009 05:31 AM
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Rockohaulic
Elite Veteran
Location: Valencia, CA, USA, 3rd Rock from the Sun

My Posts This: Topic  Forum
Quote 
you dont check the temp on the back plate or the head itself on a ys check temps on the block just before the head

OK guys, so what temp should I be shooting for in this position???

I got a helicopter for my girlfriend,
Hope she doesn't outfly me soon!
11-02-2009 06:09 AM
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Ghostrider
Elite Veteran
Location: San Diego, CA

My Posts This: Topic  Forum		Here is how I do it Rock. I try my best to heat the motor up with sustained tic tocks, rainbows or whatever works for you. I then get the heli down as quickly as possible so that I can pick the heli up and temp the bottom of the case just before the head on the exhaust side of the case. I look for temps around the 175F range.

This is what works for me! Other people may run cooler or much hotter. This is one of those things where you will get 100 different answers. Most people have no idea what their temps are. They are simply going from sound, smoke, performance, and experience.

It's not hard to get to that point as long as you know what 175F sounds, looks, and acts like. IE: a temp gun.

With CP 30% (SR 91), I am about 1-1/4 plus three clicks on the mid and 1 full turn minus 3 clicks on the top... at least yesterday. This obviously changes with weather conditions.

Sam Gammo
It's not your altitude, it's your ATTITUDE!
11-02-2009 10:43 AM
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CoronaL
Veteran
Location: Winnebago IL

My Posts This: Topic  Forum		I'm usually about 1.5-1.75 on the mid and about 0.75-1 on the high.

YS/OS motor refurbishing nutball
11-03-2009 03:20 AM
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inkspot1967
rrProfessor
Location: cranston ri.

My Posts This: Topic  Forum		^^^^^ bingo me to

Crashing hitting the ground is easy...Hitting the windsock takes skill..!
FBH Synergy N9
Rave
11-03-2009 03:23 AM
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DenisFerrari
Heliman
Location: Italy

My Posts This: Topic  Forum		Hi all, in my case still flying quite rich but I'm around 1+1/2 turns less 3 clicks on mid and around 1+1/2 turns + 3 clicks on high needle. 1850 Rpm, Align 91H motor (OS 91HZ) (black head, no pump), CP30%, end of flight temp around 85/90°C on the black head and around 45°C on the back. Seems so good!
11-10-2009 02:09 PM
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glfloat
Senior Heliman
Location: Santa Monica California

My Posts This: Topic  Forum		Rock, I've been fiddeling around with my YS for a while now until somoene told me to just tune the high end needle first and leave the mid to factory. Do clumbouts and big loops. Keep leaning until the motor wants to bog on the loops or climb ,or until the motor hangs on the pipe after an auto. Then 2 or 3 clicks back form the lean position should be your proper high end.

Then tune the mid by doing ticktoks and checking for power/leanness in the same way.

The auto test allways works for me in terms of leanness.. to hear the motor to see if it hangs.

I dont check engine temp on the YS...

but i got plenty of power now that I've tuned it this way.
11-12-2009 08:01 AM
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jake26
Senior Heliman
Location: central cali

My Posts This: Topic  Forum		On the YS the mid needle will effect the high needle setting. That is why they say to adjust the mid first. But if your happy with it the run it

It's not gay if you beat them up afterwards!
11-13-2009 03:10 AM
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Align T-REX 600N 700N > T-REX 700N Needle Settings - Fiddle with the Middle or aim High?
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