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13cc ob having fits and end of my rope - 2/10/2013 10:14 PM   
abrom1


 

Posts: 7
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Joined: 1/4/2012
Last Login: 4/26/2013
From: Raceland, LA, USA
Status: offline 		Hi fellow nitro burners, ive finally come to realize i need help and any info is greatly appreciated. Here my problem; ive purchased a used 1/4 scale tunnel with a 13cc k&b about 6 months ago. when i fire it up after priming the lines and carb , the engine is very susceptable to reving rpms through the roof at idle. and cannot get it to act right so i can tune it properly. So after purchasing new carb, fuel tank, fuel lines, hsn valve, new bearing and conrod. tried it today and still have the same issues. what i can tell u when running on bench the carb looks like it to be getting moisture on the  barrel ( is that normal?) and have a mist of fuel coming out the carb.   There is no air bubbles in lines, since ive owned it , it has yet to make a lap in the bayou. ive humbled myself and come to the aid of proffesional enthusiast

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RE: 13cc ob having fits and end of my rope - 2/11/2013 3:31 AM   
jmy2u


 

Posts: 63
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Joined: 11/2/2008
Last Login: 2/11/2013
From: Algona, WA, USA
Status: offline 		Sounds like your starting it backwards, If you are looking down at the flywheel it should turn clockwise.

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RE: 13cc ob having fits and end of my rope - 2/11/2013 5:31 AM   
Joshsubmec



Posts: 176
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Joined: 2/24/2012
Last Login: 6/12/2013
From: Waterford, CA, USA
Status: offline 		I have that same exact problem but with my .18 super tiger on my rigger, I can't figure out why it does this. The moor is turning the right way to.???

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Zippkits jae .12 outrigger (SOLD), GP Pete''''''''''''''''N Poke, thunder tiger outlaw, E-Flite piper Pawnee.

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RE: 13cc ob having fits and end of my rope - 2/11/2013 7:36 AM   
rcguy1411


 

Posts: 1246
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Joined: 11/11/2008
Last Login: 6/20/2013
From: hamilton, ON, CANADA
Status: offline 		what are your needles set at good placr to start is about 3 1/2 turns out on the high needle and low needle flush carb barrel should be open 2-3 mm to start also what plug are you using and nitro % with my .67 i run mccoy mc59 and 20% nitro with 18 % oil another good plug is also the mc 9

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RE: 13cc ob having fits and end of my rope - 2/11/2013 6:17 PM   
abrom1


 

Posts: 7
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Joined: 1/4/2012
Last Login: 4/26/2013
From: Raceland, LA, USA
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thanks guys, yes it did kick of backwards twice yesterday so now i keep the starter on a little longer than just kickiin on there to prevent it from starting it backwards. thinkin about it last nite afterwards i realize my high speed needle setting was to lean. 2 turns not good . so next weekend ill retry again with better results i bet. I almost thought there wasn't enuff exhaust pressure and the only cause of that was a week piston and cylinder so i taken it down to look but it still looks new . ill post and let u guys know of next weekend results. again thanks



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RE: 13cc ob having fits and end of my rope - 2/11/2013 10:34 PM   
rcguy1411


 

Posts: 1246
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Joined: 11/11/2008
Last Login: 6/20/2013
From: hamilton, ON, CANADA
Status: offline 		if you haven t put the engine back together yet slide the piston into the sleave it should get tight a few mm before it comes to the top of the sleave if it comes flush with the top of sleave time for a new piston sleave

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RE: 13cc ob having fits and end of my rope - 2/11/2013 11:30 PM   
abrom1


 

Posts: 7
Score: 100
Joined: 1/4/2012
Last Login: 4/26/2013
From: Raceland, LA, USA
Status: offline

its good rc guy , get tight towards the top; gonna put it back together tonite and possibly try it out tomorrow. off of work due to mardi gras tuesday , lucky me
 



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RE: 13cc ob having fits and end of my rope - 2/12/2013 12:46 AM   
Joshsubmec



Posts: 176
Score: 100
Joined: 2/24/2012
Last Login: 6/12/2013
From: Waterford, CA, USA
Status: offline 		Rcguy, thanks for the advice, ran my boat on the bench today! With the flywheel I added and 3 turns on the needle the boat is running singly smooth!

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Zippkits jae .12 outrigger (SOLD), GP Pete''''''''''''''''N Poke, thunder tiger outlaw, E-Flite piper Pawnee.

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RE: 13cc ob having fits and end of my rope - 2/13/2013 2:02 AM   
rcguy1411


 

Posts: 1246
Score: 105
Joined: 11/11/2008
Last Login: 6/20/2013
From: hamilton, ON, CANADA
Status: offline 		glad your up and runnig

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