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adapters and plugs

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Wanted adapters and plugs

Post  crs1945 on Thu Oct 15, 2015 8:05 am

How do the Merlin glo plug adapters and clamp ring work. What does the clamp ring do. Pics would be most helpful. Thanks I Love This Forum!
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Wanted Re: adapters and plugs

Post  pkrankow on Thu Oct 15, 2015 9:11 am

I don't feel like linking pictures, so I am linking products with good pictures.

stock head
http://coxengines.ca/cox-.049-glow-head.html

"Drop in" style with and without clamp rings
http://coxengines.ca/cox-.049-glow-plug-adapter-insert-style.html
http://coxengines.ca/insert-for-.049-head-adapter-3-5-fins-medium-hot.html

Glow plug adapter and glow plug
http://coxengines.ca/cox-.049-glow-plug-adapter.html
http://coxengines.ca/replacement-plug-for-.049-head-adapter.html

On the stock head and the glow plug adapter the combustion chamber is formed by the head. The head is also threaded to hold it into the cylinder.

On the "drop in" style the combustion chamber is formed by the glow plug insert. The threads to hold things together are on the clamp ring.

The "drop in" style offer excellent combustion chamber shape, similar to the the original head.

The glow plug adapter offers simple replacement of glow plugs from easily available plugs used by most engines. This also allows for easy temperature change of the plug, from plugs you may already have on hand. The shape of the chamber is less ideal than with a "drop in" plug or original glow head because there will be a step formed by the plug entering the chamber.

If you need to get out and fly all three systems are very good. The "drop in" style with a clamp ring end up slightly superior overall because they are current product and run as good or better than original glow heads since there are more tuning options available than just adding and removing gaskets.

Phil
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Wanted Re: adapters and plugs

Post  RknRusty on Thu Oct 15, 2015 10:53 pm

In addition to Phil's information, the drop-in plugs are high compression even compared to the Cox HC heads. You should generally start with no less than 3 copper head gaskets, and adjust between 3 and 5 to tune your engine for the best performance. It may change between winter cold and summer heat, needing higher compression on hot days, less on cold days.
Rusty

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Wanted Re: adapters and plugs

Post  GallopingGhostler on Thu Oct 15, 2015 11:59 pm

Photos included with link to make it easy to see.

pkrankow wrote:I don't feel like linking pictures, so I am linking products with good pictures.

stock head
http://coxengines.ca/cox-.049-glow-head.html



"Drop in" style with and without clamp rings
http://coxengines.ca/cox-.049-glow-plug-adapter-insert-style.html



http://coxengines.ca/insert-for-.049-head-adapter-3-5-fins-medium-hot.html



Glow plug adapter and glow plug
http://coxengines.ca/cox-.049-glow-plug-adapter.html



http://coxengines.ca/replacement-plug-for-.049-head-adapter.html



On the stock head and the glow plug adapter the combustion chamber is formed by the head. The head is also threaded to hold it into the cylinder.  

On the "drop in" style the combustion chamber is formed by the glow plug insert.  The threads to hold things together are on the clamp ring.

The "drop in" style offer excellent combustion chamber shape, similar to the the original head.  

The glow plug adapter offers simple replacement of glow plugs from easily available plugs used by most engines.  This also allows for easy temperature change of the plug, from plugs you may already have on hand.  The shape of the chamber is less ideal than with a "drop in" plug or original glow head because there will be a step formed by the plug entering the chamber.

If you need to get out and fly all three systems are very good.  The "drop in" style with a clamp ring end up slightly superior overall because they are current product and run as good or better than original glow heads since there are more tuning options available than just adding and removing gaskets.

Phil

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Wanted Re: adapters and plugs

Post  KariFS on Fri Oct 16, 2015 2:07 am

Will the "GloBee style" inserts work with "genuine" GloBee clamp rings?

I mean this one: http://coxengines.ca/insert-for-.049-head-adapter-3-5-fins-globee-style.html

I have a couple of NIB GloBee sets, and would like to utilize them. They have the inserts in the bag too, of course, but I don't know whether they are rated hot, medium or cold. And eventually they may get burnt too.

EDIT: Ah, nevermind, it says (in a bold red typeface) "Requires the use of our clamp ring" Rolling Eyes
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Wanted Re: adapters and plugs

Post  RknRusty on Fri Oct 16, 2015 4:10 am

Karif, they may be color coded around the electrode post. Red, of course would be hot, Green, cold, anything else medium hot. Bernie's medium, if I recall, have no color. Cox and Norvel are interchangeable, but try and see what you have, It likely fits.
Rusty

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