O.S. 32 help  
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All Forums >> RC Helicopters >> RC Helicopter General Discussions >> O.S. 32 help
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O.S. 32 help - 5/17/2008 10:38:11 PM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		ok so i have a hawk pro with an os 32 it gets up to speed fine but as soon as i take off the engine seems to loose power there was that 3rd hole in the fuel tank that i filled with stuff and there is no leak but why does it lose power i don't think it is the mixture because i have been adjusting it and it didn't do anything really. so i put it back to where it was working great before.
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RE: O.S. 32 help - 5/17/2008 11:03:09 PM   
blvdbuzzard



Posts: 1487
Joined: 6/16/2002
From: boulevard, CA, USA
Status: offline 		Do you have a pitch gauge? That will tell you if you are trying to pull to much pitch. The other thing is what is the throttle curve? What fuel and what is the nitro content?

All of these will effect the way the motor runs.

On the O.S. .32 the low end needle has a large effect on mixture all the way to about the 3/4 throttle. Open the low end needle a tiny bit.

Get the motor started and idling, pinch the fuel line. How long does the motor run?

Now, I could be wrong here, I have not thought about it for a long time. I think the stock setting are, low end 1 1/2 turns open, top end 2 1/2 turns open. I think mine was running very well at 1 3/4 turns open on the high end. I do not remember the low end setting.


Dru.

(in reply to jondoe)
       Post #: 2

RE: O.S. 32 help - 5/17/2008 11:11:38 PM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		where is the low end? and the blades are -4 and 10

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RE: O.S. 32 help - 5/18/2008 4:06:21 AM   
evan-RCU



Posts: 2678
Joined: 2/4/2002
From: Charlotte, NC, USA
Status: offline 		Reduce the pitch to -2 to 8.5.... The pitch is too high. Assuming your using stock size fiberglass blades ...

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RE: O.S. 32 help - 5/18/2008 4:13:20 AM   
nitrohog


 

Posts: 350
Joined: 9/8/2006
From: Byron, IL, USA
Status: offline 		Honestly it sounds like a engine tuning problem to me. Most likely too lean high speed mixture. Also I believe that the fuel tank fill tube needs to be capped, but I have never used one.

(in reply to evan-RCU)
       Post #: 5

RE: O.S. 32 help - 5/18/2008 4:50:58 PM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		i did cap the fill hole and it worked for a while then it did it again and i will change the pitch thx

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RE: O.S. 32 help - 5/18/2008 6:34:44 PM   
blvdbuzzard



Posts: 1487
Joined: 6/16/2002
From: boulevard, CA, USA
Status: offline 		The low speed needle is in the middle of the throttle arm. Have you read the manual for the engine? Here is the manual It sounds like a tunning issue. My 32 would pull -10 to +10 without issue.

We need to know a few things.

What glow plug
What fuel and how old
Are you using muffler pressure

The O.S. .32 is pretty much a fuel and forget engine. Sounds like junk in the carb or low end needle setting is off.


Dru.

(in reply to jondoe)
       Post #: 7

RE: O.S. 32 help - 5/18/2008 7:35:50 PM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		i have opened and closed the needle valve and the low end valve to every possible combination and it still does it, its like the engine isnt getting enough gas i opened the valves all the way and it still happens also i closed the fill hole on the tank and no air is leaking out of the

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       Post #: 8

RE: O.S. 32 help - 5/19/2008 3:03:23 AM   
blvdbuzzard



Posts: 1487
Joined: 6/16/2002
From: boulevard, CA, USA
Status: offline 		It should not run with the needles closed or opened all the way. That sounds like junk in the carb. The high end should be around 1 3/4 turns open. The low end around 2 or so.

Have you tried new fuel, new plug?

when it bogs down, does the amount of smoke decrease or increase?


Dru.

(in reply to jondoe)
       Post #: 9

RE: O.S. 32 help - 5/19/2008 3:49:57 AM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		ok thanks i will clean out the carb and i will change the plug and the smoke decreases

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       Post #: 10

RE: O.S. 32 help - 5/19/2008 8:41:21 PM   
blvdbuzzard



Posts: 1487
Joined: 6/16/2002
From: boulevard, CA, USA
Status: offline 		Smoke decreasing means it is running lean. Clean the carb, set the needles back to stock and try again.


Dru.

(in reply to jondoe)
       Post #: 11

RE: O.S. 32 help - 5/20/2008 1:06:27 AM   
james199



Posts: 265
Joined: 5/28/2006
From: lake city, FL, USA
Status: offline 		it must smoke ...... smoke is your friend
close the high needle then open it 2 full turns start the motor and turn it in a click at the time it should sound like its 4 stoking you want the motor to sound smooth so only close the high side a click or 2 at a time then spool it again and if its not running rough ( 4 stroking) then you have it . (or your real close).. now tune the low side that will be the needle in the carb where the control rod is located only turn it in a TINNEY BIT at a time and let the motor clean out before you tweak it again you want a smooth idle. it may even have a slight 4 stroke sound that's fine as long as it keeps running once you have that then spool up your heli and it should run great from there just don't lean it to much i have found that if i peek tune mine then then rich en the high 1 to 2 clicks then its perfect. also make sure you don't have tooo much pitch you should have light skids at half throttle and hover just a smidgen over half but some people have a hover at half throttle.

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RE: O.S. 32 help - 5/20/2008 3:37:55 AM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		thank you but ive tried all that thats why im hear i should have made that clear erlyer sry but ive tried all the tunning things i could and it still just looses power

(in reply to james199)
       Post #: 13

RE: O.S. 32 help - 5/20/2008 2:28:02 PM   
james199



Posts: 265
Joined: 5/28/2006
From: lake city, FL, USA
Status: offline 		is the motor new or old i had a motor that was 2 years old and run fine and i have a motor that is only 6 months old and it wont run worth a crap and when i took it apart i found that i ran it to lean and cooked it to the point that at idle it was the best that i had but when it got hot and just as i would take off it just wouldn't fly the helicopter so i did the math. to buy a motor or rebuild the one i had and i found that it was cheaper to rebuild and so i bought a piston and ring and a cylinder put it back together it was just as good as new and i have now 5 to 7 gallons of 15 to 30 % nitro and it is still sweet and smooth running i guess what i am saying is you might want to do a rebuild on your OS you can save some $$$ if you get the piston and cylinder that isn't ringed. i hope this helps you.

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RE: O.S. 32 help - 5/20/2008 9:10:59 PM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		ya i got a brand new in box .37 for free so ill switch it up. thanks

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RE: O.S. 32 help - 5/21/2008 3:45:58 PM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		ok i did that it works well so i just must have burned the 32 thanks

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       Post #: 16

RE: O.S. 32 help - 5/23/2008 10:22:27 PM   
jondoe


 

Posts: 35
Joined: 1/9/2007
From: wiliston, VT, USA
Status: offline 		ok so it worked for a while and then the same thing happened but this time i ran it very rich now what

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       Post #: 17