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All Forums >> RC Helicopters >> Thunder Tiger - Raptor 30, 50, 60, 90 >> OS.37 qurstions?
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OS.37 qurstions? - 7/3/2008 1:39:38 AM   
FlyingHigh 400


 

Posts: 677
Joined: 11/1/2007
From: St Clair Shores, MI, USA
Status: offline 		Im putting my new engine in my Raptor 30,what type of lock tight should I use?I have some HPI thread lock #Z159 and AE factory team locking adhesive..Also how many tanks for break-in .

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Raptor 30,GY401/JR NES810G,OS.37/Revolution tune Pipe. http://www.youtube.com/user/flyinhigh450
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RE: OS.37 qurstions? - 7/3/2008 4:34:24 AM   
FlyingHigh 400


 

Posts: 677
Joined: 11/1/2007
From: St Clair Shores, MI, USA
Status: offline 		I used the HPI lock tight and im bolting the new motor in now.

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(in reply to FlyingHigh 400)
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RE: OS.37 qurstions? - 7/3/2008 9:43:51 AM   
FlyingHigh 400


 

Posts: 677
Joined: 11/1/2007
From: St Clair Shores, MI, USA
Status: offline 		Ok,the new motor is in.So how many tanks for brake-in?

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RE: OS.37 qurstions? - 7/3/2008 12:05:57 PM   
HeliTB



Posts: 1183
Joined: 9/14/2006
From: Fort Washington, MD, USA
Status: offline 		OS engines, don't require a break-n per se, but running in. Which means you do it in the aircraft while flying (hovering and an occasional pullout at full throttle for about 5 to 10 seconds and return to hover for about 30 seconds and repeat for about 8 tanks while leaning 1/8 to 1/4 turn in at a time until you find the sweet spot) on the rich side and with each tank you slowly lean the high speed needle. What you are trying to do during run in is to simulate the load the engine will be flying so that it is broken in under load and not static (on a stand or idling on the ground). I wouldn't bother the low speed needle unless really necssary. Mine was spot on from the factory, don't ask me how I know.

BTW: Once you find the sweet spot go a click back rich. Mine performs flawlessly, most guys thinks it a 50 size engine.

Forgot to add, I'm using a Hatori Pipe made for the OS 37, which really allows this thing to breathe. I had the muffler you have pictured, yes that is only a muffler to keep it quiet, when you put a pipe on it, it will really wake up that OS 37. It likes to breathe.

< Message edited by HeliTB -- 7/3/2008 12:08:42 PM >


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Raptor v2 OS 37/NP Bobcat Jet OS .55 AX
X-Eagles TB40 Pusher Jet/SIG Kougar OS .46 AX

(in reply to FlyingHigh 400)
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RE: OS.37 qurstions? - 7/3/2008 12:18:36 PM   
FlyingHigh 400


 

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

ORIGINAL: HeliTB

OS engines, don't require a break-n per se, but running in. Which means you do it in the aircraft while flying (hovering and an occasional pullout at full throttle for about 5 to 10 seconds and return to hover for about 30 seconds and repeat for about 8 tanks while leaning 1/8 to 1/4 turn in at a time until you find the sweet spot) on the rich side and with each tank you slowly lean the high speed needle. What you are trying to do during run in is to simulate the load the engine will be flying so that it is broken in under load and not static (on a stand or idling on the ground). I wouldn't bother the low speed needle unless really necssary. Mine was spot on from the factory, don't ask me how I know.

BTW: Once you find the sweet spot go a click back rich. Mine performs flawlessly, most guys thinks it a 50 size engine.

Forgot to add, I'm using a Hatori Pipe made for the OS 37, which really allows this thing to breathe. I had the muffler you have pictured, yes that is only a muffler to keep it quiet, when you put a pipe on it, it will really wake up that OS 37. It likes to breathe.


Cool,it's the same way I break my nitro truck motors in.Im looking for a Pipe now .Thanks for the info and reply ..

_____________________________

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

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RE: OS.37 qurstions? - 7/3/2008 2:28:43 PM   
BarracudaHockey



Posts: 10810
Joined: 7/13/2003
From: Orange Park, FL, USA
Status: offline 		I wouldn't bother with that pipe on RR. Just get the Hatori SAB 6RS

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RE: OS.37 qurstions? - 7/3/2008 10:18:33 PM   
FlyingHigh 400


 

Posts: 677
Joined: 11/1/2007
From: St Clair Shores, MI, USA
Status: offline 		I thought that was the one everyone was talking about..I emailed Heliproz to see if they can get one cause there out of stock right now.I know what im looking for now and I really like the way it looks.

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RE: OS.37 qurstions? - 7/4/2008 3:32:06 AM   
FlyingHigh 400


 

Posts: 677
Joined: 11/1/2007
From: St Clair Shores, MI, USA
Status: offline 		Just finished my break-in.First 2 tanks engine temp was at 115F,I give it 1/8 turn for the next 2 tanks and engine temp was 145F.Last 3 tanks I give it another 1/8 turn and the engine temp was at 180F.The last tank I did some climb outs and OMG I honestly dont need a tune pipe cause it has more power than I thought .At the end of the last 3 tanks I let it run out of fuel at 5ft or so and auto landed then checked the temp right after so I know around 220F-230F in flight mode this motor will rock.Im a happy owner of a new OS.37 .

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RE: OS.37 qurstions? - 7/10/2008 9:53:41 PM   
matador_24


 

Posts: 661
Joined: 6/4/2007
From: montreal, QC, CANADA
Status: offline 		Hello, do you know how many turns did you open in the main needle counterclockwise starting from fully closed clockwise (the main needle)????? Mine is 1 turn open counterclock wise but it runs cool (160F) I wonder if I can lean it out more but I do not know if having less than 1 turn open in the main needle is something 'normal'

(in reply to FlyingHigh 400)
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RE: OS.37 qurstions? - 7/10/2008 10:18:25 PM   
FlyingHigh 400


 

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

ORIGINAL: matador_24

Hello, do you know how many turns did you open in the main needle counterclockwise starting from fully closed clockwise (the main needle)????? Mine is 1 turn open counterclock wise but it runs cool (160F) I wonder if I can lean it out more but I do not know if having less than 1 turn open in the main needle is something 'normal'

It depends on the fuel your useing.Im running 15% powermaster and the temp is at 220F with the needle at 1 1/4 turns open.

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

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RE: OS.37 qurstions? - 7/10/2008 11:26:59 PM   
matador_24


 

Posts: 661
Joined: 6/4/2007
From: montreal, QC, CANADA
Status: offline 		I am using 15% coolpower and with that needle setting my engine is running 160F (1.25turns)...... that is what I find weird.... do you think I riched out too much the Mixture needle (the little one).... I riched it until I got an excellent idle and excellent transition between idle and hovering, richer than that it will bog (I am talking about the mixture needle)...

do you think I am better to lean out the mixture needle?? or I should just close a bit more the main needle???

(in reply to FlyingHigh 400)
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RE: OS.37 qurstions? - 7/11/2008 2:27:39 AM   
FlyingHigh 400


 

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

ORIGINAL: matador_24

I am using 15% coolpower and with that needle setting my engine is running 160F (1.25turns)...... that is what I find weird.... do you think I riched out too much the Mixture needle (the little one).... I riched it until I got an excellent idle and excellent transition between idle and hovering, richer than that it will bog (I am talking about the mixture needle)...

do you think I am better to lean out the mixture needle?? or I should just close a bit more the main needle???


If its running fine then why would you want to lean it out more?

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

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RE: OS.37 qurstions? - 7/11/2008 3:21:12 PM   
HeliTB



Posts: 1183
Joined: 9/14/2006
From: Fort Washington, MD, USA
Status: offline 		My OS 37 is about 1-3/8 to 1-1/2 turns out and I'm using 30%. With the Hatori Pipe you will need to richen a few clicks since its getting more air through the engine.


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Raptor v2 OS 37/NP Bobcat Jet OS .55 AX
X-Eagles TB40 Pusher Jet/SIG Kougar OS .46 AX

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RE: OS.37 qurstions? - 7/11/2008 4:20:47 PM   
evilhorse