Engine Help!!! TT39H  
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All Forums >> RC Helicopters >> Thunder Tiger - Raptor 30, 50, 60, 90 >> Engine Help!!! TT39H
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Engine Help!!! TT39H - 7/1/2008 3:17:26 AM   
mapleleafs


 

Posts: 47
Joined: 10/28/2006
From: King City, ON, CANADA
Status: offline 		Hey guys!

I recently bought a new TT39H and put it in my Raptor 30v2. I broke it in on 15% CP for 2-3 tanks with no issues.(Then the problems came)

-Firstly, i noticed that the engine was hot after only 3-4 minutes of hovering(could not touch backplate for more than 1-2 seconds...ouch).
-Secondly, when going from (idle-up 1) back down to (normal flight), the heli goes wack and starts to shack/engine burps and loose control. However, it dis-appears after 5-6 seconds.
-Thirdly(the scariest part), after landing and lowering throttle to idle, the same thing hapens. The engine begins to burp and gargle, along with the heli violently shaking.

Before posting this i have done the following:
-new glow-plug(failed)
-tryed to richen and lean(failed)
-cleaned tank(failed)
-replaced all fuel lines(failed)
-tightened engine bolts(couple a bit loose)
-checked for loose screws(none)

After doing all this, there was no success.

I called Arden at A & J Hobbies but he was not sure either.

I'm open to all suggestions????????


ps. Note that even when both needles are set 4 turns open the engine still seems to be running very warm.
       Post #: 1

RE: Engine Help!!! TT39H - 7/1/2008 5:29:37 AM   
FlyingHigh 400


 

Posts: 677
Joined: 11/1/2007
From: St Clair Shores, MI, USA
Status: offline 		Take it back and exchange it..

_____________________________

Raptor 30,GY401/JR NES810G,OS.37/Revolution tune Pipe. http://www.youtube.com/user/flyinhigh450

(in reply to mapleleafs)
       Post #: 2

RE: Engine Help!!! TT39H - 7/2/2008 6:14:14 AM   
JoDyO


 

Posts: 72
Joined: 9/16/2007
From: Edmonton, AB, CANADA
Status: offline 		.. with a O.S 37 SZH and all you problems will disappear. True

(in reply to FlyingHigh 400)
       Post #: 3

RE: Engine Help!!! TT39H - 7/2/2008 12:39:47 PM   
gj1803


 

Posts: 185
Joined: 10/6/2006
From: Blackpool, UNITED KINGDOM
Status: offline 		The TT39's are abit sensitive when setting up the slow and high speed needles. If you dont get the balance right, they are awful. My only suggestion is persevere with the settings, make sure the carb is operating ok and its not sucking air thru the seal. Once set up correctly, they are a good, although a little under powered for aggressive flying, reliable engine.

GJ

(in reply to JoDyO)
       Post #: 4

RE: Engine Help!!! TT39H - 7/2/2008 9:30:45 PM   
FlyingHigh 400


 

Posts: 677
Joined: 11/1/2007
From: St Clair Shores, MI, USA
Status: offline
quote:

ORIGINAL: JoDyO

.. with a O.S 37 SZH and all you problems will disappear. True


Mine is going in tonight .

Attachments
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_____________________________

Raptor 30,GY401/JR NES810G,OS.37/Revolution tune Pipe. http://www.youtube.com/user/flyinhigh450

(in reply to JoDyO)
       Post #: 5

RE: Engine Help!!! TT39H - 7/2/2008 10:00:42 PM   
gj1803


 

Posts: 185
Joined: 10/6/2006
From: Blackpool, UNITED KINGDOM
Status: offline 		Hi FH400,

Let me know how she goes after it is run in. I want to know how much it bogs between full pos pitch and full neg pitch on stationary flips etc

Thanks

GJ

(in reply to FlyingHigh 400)
       Post #: 6

RE: Engine Help!!! TT39H - 7/2/2008 10:19:01 PM   
FlyingHigh 400


 

Posts: 677
Joined: 11/1/2007
From: St Clair Shores, MI, USA
Status: offline
quote:

ORIGINAL: gj1803

Hi FH400,

Let me know how she goes after it is run in. I want to know how much it bogs between full pos pitch and full neg pitch on stationary flips etc

Thanks

GJ


I will report back with a video this weekend but heres what its like with a OS.32 http://www.rcuniverse.com/forum/m_7684733/tm.htm .I'll post the video in that thread .

_____________________________

Raptor 30,GY401/JR NES810G,OS.37/Revolution tune Pipe. http://www.youtube.com/user/flyinhigh450

(in reply to gj1803)
       Post #: 7

RE: Engine Help!!! TT39H - 7/3/2008 1:01:35 PM   
gj1803


 

Posts: 185
Joined: 10/6/2006
From: Blackpool, UNITED KINGDOM
Status: offline 		Thanks FH

GJ

(in reply to FlyingHigh 400)
       Post #: 8

RE: Engine Help!!! TT39H - 7/3/2008 2:21:55 PM   
BarracudaHockey



Posts: 10598
Joined: 7/13/2003
From: Orange Park, FL, USA
Status: offline 		Why would you go from full positive to full negative in a flip?

_____________________________

Andy - Helicopter Forum Moderator
AMA 77227 http://www.jaxrc.com

(in reply to gj1803)
       Post #: 9

RE: Engine Help!!! TT39H - 7/3/2008 9:48:21 PM   
mapleleafs


 

Posts: 47
Joined: 10/28/2006
From: King City, ON, CANADA
Status: offline 		FINGER HAPPY??

(in reply to BarracudaHockey)
       Post #: 10

RE: Engine Help!!! TT39H - 7/3/2008 11:08:37 PM   
gj1803


 

Posts: 185
Joined: 10/6/2006
From: Blackpool, UNITED KINGDOM
Status: offline 		lol when I say flip, its more of a flop. I get v nervous about throwing the damn thing about. As soon as its the wrong way up I find i am stick happy pulling back and putting loadsa neg pitch on, then rollin her over again and makin sure she stays there by puttin loadsa pos pitch on. Its been only 3 flights in idle up 1 so a little slack is reqd please. Once I get some confidence I am sure it wont be so bad.

GJ

(in reply to mapleleafs)
       Post #: 11

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