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HelicopterThunder TigerOther › TT50 pro H needle setting help please
06-02-2004 02:47 PM  13 years agoPost 1
StrangeRanger

rrVeteran

VT

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I've tried Ace Hobby's site and Thunder Tiger's site, but I can not find the original needle settings for my TT50 proH engine. The engine manual only mentions the initial setting for the needle valve (high setting) not the mixture metering screw (low). Does anyone know the original facotry settings for this motor? Please and thank you,
j

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06-02-2004 04:57 PM  13 years agoPost 2
heli1man

rrApprentice

Chautauqua Lake, NY

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Initial settings

Turn the main needle closed until it stops. Then open it 3 turns.

Screw the low end needle (inside the carb) closed until it stops, open it 3.5 turns from closed.

This is a good starting point for break in of the TT50. Keep and eye on the heat and keep it slobbering rich for the first 6 tanks. Small time runs with rest and cool down in between. Tune as needed and replace the plug after tank 6.

Bill

Eco 8 Brushless, MS composits Raptor30v2 39TT 550TT carbons Shogun 400 Brushless 3 cell lipo.

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06-02-2004 05:38 PM  13 years agoPost 3
Ralph

rrApprentice

CT

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With this engine the low end needle is the dominant one of the two....

It meters the fuel flow from about 0-80% of the barrel throw.

So basically start with the high- end needle set to the factory setting and fine tune the low end needle for a good hover. When you get the point of tuning the engine for power .... start by getting a decent climbn rate by leaning the low end a little more. Then take it up and fly it like you normally would and see how it perform between 75% - full throttle. If it appears rich lean the low end a little more and when it starts to overheat/lean crack the high end open a couple of clicks. No more than a couple at a time.... or you will just chase the needles all day!

I found this method to work the best with this engine.

I would run it rich for a couple of hover tanks, then check the plug, and then start to dial it in for performance. These engines don't require much breakin

What you will probubly find is that once you have the engine tuned for performance the idle will be sloppy rich. There is a modification that can be performed to the low end needle that will correct this problem.
You might also find that you can't get the engine to stop leaning in the midrange area. This mod. also addresses this problem. Do a search for this engine and you will find a clear explanation of the mod.

Good Luck,
Ralph

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06-02-2004 05:48 PM  13 years agoPost 4
Itsindilas

rrVeteran

Greece-Athens

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My R50 with TT50 + MPII (Q) 50 LR + 12.5 CP Special Heli mix spins the blades at 2000rpm and the needle settings are:
1. Main 2 and 1/4
2. Low 5 and 1/2
Engine runs cool and plenty of smoke polutes the air.
The idle is quite rich but reliable with ENYA 3.

Cheers

PS: The same needle settings work for my R39 + TT39 + MP II Q 30 same fuel and plug.

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06-02-2004 07:10 PM  13 years agoPost 5
drdot

rrElite Veteran

So. California, Orange County.

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Hi, Start with the main 31/2 turns out, 4 if you are using 15% fuel...Try about two out on the Idle, Then adjust for the richest idle you can and still keep running...This is critical, as the idle needle controls the hover mixture.

John.

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06-02-2004 09:31 PM  13 years agoPost 6
SC Raptorman

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South Carolina

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I set my TT50 on the low side to be rich to the point that I pinch the fuel line right before I take off and climb out and see how it climbs and adjust the high side to a click or two only at a time , be sure to check the back plate to be where it does not burn your finger . Remember to listen to your engine and it will tell you what it needs to be happy , more fuel or less fuel .

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06-03-2004 02:22 AM  13 years agoPost 7
DjLock

rrVeteran

Leonia, NJ

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Anyone got a diagram to point out were the low and high end needles are? Im kind of confused... (yes I am new to glow helis)

Sorry for using this post for it but I thought it be helpful for other people also.

Eric

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06-03-2004 02:51 AM  13 years agoPost 8
RCKing

rrNovice

Lawton OK.

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The high speed needle is the big one on the right side of the heli were the fuel line hooks up, the low speed needlle is one the left side were you hook up the throttle linkage it takes a small straight blade screwdriver to adjust it. I run my needles at about 4 turns out on both that will get you going.

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06-03-2004 03:00 AM  13 years agoPost 9
DjLock

rrVeteran

Leonia, NJ

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oooo now I see that little sucker! Thanks!

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HelicopterThunder TigerOther › TT50 pro H needle setting help please
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