RunRyder RC
WATCH
 1 page 990 views POST REPLY
HomeAircraftHelicopterGaui NX4 NX7Other › plugs os37
02-03-2013 12:11 AM  5 years agoPost 1
crashheli

rrApprentice

naugatuck C.T U.S

My Posts: All  Forum  Topic

keep popping plugs any ideas

PM  EMAIL  GALLERY  Attn:RR  Quote
02-03-2013 01:54 AM  5 years agoPost 2
dkshema

rrMaster

Cedar Rapids, IA

My Posts: All  Forum  Topic

Too lean I would suspect.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

PM  EMAIL  GALLERY  Attn:RR  Quote
02-03-2013 04:33 AM  5 years agoPost 3
blade3d

rrElite Veteran

New Jersey USA

My Posts: All  Forum  Topic

Your bearing could be bad and pieces of it could damage the plug

Blade3d

PM  EMAIL  GALLERY  Attn:RR  Quote
02-03-2013 05:03 AM  5 years agoPost 4
dkshema

rrMaster

Cedar Rapids, IA

My Posts: All  Forum  Topic

keep popping plugs any ideas
That's really not much to go on. What do they look like when you take them out?

What are the symptoms? Is this something new, or something you've been plagued with for a long time?

Did you use anything to seal the muffler to motor joint? High temperature RTV or some other stuff that can foul your plugs?

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

PM  EMAIL  GALLERY  Attn:RR  Quote
02-03-2013 01:54 PM  5 years agoPost 5
crashheli

rrApprentice

naugatuck C.T U.S

My Posts: All  Forum  Topic

plug is clean i think its rich but it has good power

PM  EMAIL  GALLERY  Attn:RR  Quote
02-03-2013 07:31 PM  5 years agoPost 6
dkshema

rrMaster

Cedar Rapids, IA

My Posts: All  Forum  Topic

So what are the symptoms?

Dies in flight? Dies when you remove the starter battery? When you remove the plug, the coil is roasted, broken, deformed, squished...

How old is the motor; does it have a lot of time on it.

Did you use silicone RTV between the muffler and the motor?

How often does the plug go bad? Every flight, every ten flights...

If the rear bearing is starting to fall apart, it will send small bits of metal up past the ring which find their way to the plug. When they DO, it's lights out. Afterward the motor will start and run, but when you remove the battery, it stops.

Look at the plug under good magnification, looking for small bits of metal. Usually you can flush out the plug and it will still work fine.

If this is the case, it's time to tear down the motor, check the rest of the innards, then replace at least the rear bearing.

-----

If you used silicone RTV between the muffler body and crankcase, this stuff ends up being squeezed out as a thin ribbon inside the header cavity. It eventually begins to flake off, finding itself sucked into the combustion chamber and finally fouling the plug. You can see bits of the RTV on the plug. Flushing the plug to remove the material will not restore its function, you need a new plug.

-----

Are the head bolts and backplate bolts tight? Carb fully seated on the crankcase and the screws tight?

What fuel are you using, and how many turns open is the main needle valve? Is your muffler to tank vent line sound with no holes?

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

PM  EMAIL  GALLERY  Attn:RR  Quote
02-04-2013 03:27 AM  5 years agoPost 7
Nasty1

rrApprentice

Enf,Ct-USA

My Posts: All  Forum  Topic

sounds like an echo, lol

I just added up the prices of the bearings, ect.

your better off getting another motor. I will give you 20$ for that junker.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-04-2013 06:57 PM  5 years agoPost 8
crashheli

rrApprentice

naugatuck C.T U.S

My Posts: All  Forum  Topic

All's good now mine flys unlike yours

Crash master

PM  EMAIL  GALLERY  Attn:RR  Quote
02-04-2013 07:45 PM  5 years agoPost 9
wrongler

rrProfessor

Brewerton, New York

My Posts: All  Forum  Topic

crashheli, What was the problem?

Bill Whittaker

PM  EMAIL  GALLERY  Attn:RR  Quote
02-04-2013 08:39 PM  5 years agoPost 10
dkshema

rrMaster

Cedar Rapids, IA

My Posts: All  Forum  Topic

I just added up the prices of the bearings
Gee, the rear bearing from RC Bearings is only $8 and change. OS/Tower Hobbies wants a fortune -- $42.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

PM  EMAIL  GALLERY  Attn:RR  Quote
02-04-2013 10:34 PM  5 years agoPost 11
crashheli

rrApprentice

naugatuck C.T U.S

My Posts: All  Forum  Topic

it has the magnum bushing in it already

PM  EMAIL  GALLERY  Attn:RR  Quote
03-14-2013 10:26 PM  5 years agoPost 12
codfish124

rrNovice

Lakewood Co

My Posts: All  Forum  Topic

how many flights are you getting? what is the motor temp?

you really haven't given any info but the glow plug popping it may also be over revving the motor if your head speed is to high

Team AleeS, Magnum fuels, Heli Port Hobbies, MAGNUM ENERGY 75C lipos www.motionunlimitedusa.com/

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
03-19-2013 05:23 AM  5 years agoPost 13
Furyflyer2

rrNovice

USA

My Posts: All  Forum  Topic

Cold plug- 30% nitro is the best, Plugs work on catalytic reaction generated between the methanol and platinum only. Cold plugs are manufactured using a thicker wire to give greater surface area to facilitate a greater reaction and thus the required catalytic reaction where less methanol is present in the fuel mixture.

With more nitro that means less methanol which in turn means a greater surface area to platinum will be required to generate a sufficient catalytic reaction.

So try a colder plug.

Paul G- Team 3DXhobbies

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 1 page 990 views POST REPLY
HomeAircraftHelicopterGaui NX4 NX7Other › plugs os37
 Print TOPIC  Make Suggestion 

 5  Topic Subscribe

Wednesday, August 15 - 11:26 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online