WANTED dead cox glow plugs.

I have one dead one and one ancient W filament head I don't care to use. I'll rummage them up for you.

awww what dump does your garbage go to lol

just a reminder on the cylinder also if anyone has one thats shot but still true, I need to make a jig for my lathe to bore out the cox plugs.

John, not the first but surely the second. a good friend of mine made the 9 but he hasnt fired it up. after he saw my interest in the cox twin he sent me his drawings so I can make one and fire it up I gladly accepted. if it has good power I would like to fly it also

John Goddard wrote:Murphys law Mike I chucked a load out a few weeks back sorry ma man.

Looking forward to the 9, I think you could have a 'worlds first' on your hands.

RknRusty wrote:I have one dead one and one ancient W filament head I don't care to use. I'll rummage them up for you.

thank you!

Here is 2.............

Jason_WI wrote:Here is 2.............

Wrenches? Wrenches? We don't got to cho' you no steenkin' wrenches!!

Jason_WI wrote:Here is 2.............

Jason, does the right one still light up? I'd take that for my Rat Bee

LOL oooo my!

please dont scare me into having to buy them new lol.

Shnitzl wrote:anyone feel like donating your old dead cox glow plugs?

I am trying to get things sorted for my 9 cylinder radial build, in an effort to keep costs down I am hoping the membership would be willing to donate their dead cox glow plugs, I hope to be able to modify them to take standard plugs. never tried this before so not sure how well it will work.

Canadian's would be a bonus just to keep shipping down, US should be good also.

with that said, if anyone also has a dead cylinder they are willing to part with, I need to make a jig to drill out the heads.

let me know if I am out of my mind asking this.

kind regards.
Mike

if you need help/advice on converting the cox glow heads to accept standard glow plugs i can put you in email-touch with my friend in New Zealand who has done about 2 dozen for me. i'll contact him today. happydad

Happy
thank you, I would appreciate that
I have a rough idea but would be nice to hear a tried and true way.

Hey, Let me check the dungeon !!! I KNOW I got at least a couple, if you'd want to PM your snail mail address in the meantime! I'm afraid that they probably won't have the "character" of Jason's, however !

thank you Kim.

I need as many as I can get
dont be shy, dont toss them plugs in the garbage, send them to meeeeee

Shnitzl, I have a few for you. PM sent.
Bob

thank you Bob.
much appreciated.

Shnitzl wrote:Happy
thank you, I would appreciate that
I have a rough idea but would be nice to hear a tried and true way.

my friend in New Zealand responded and will send me a write-up for modifying glow heads to glow plugs in the next few days. i will forward to you and post here.

edited 10-19-12 10:22p.m. PST - added text for cox glow head conversion.


Mod. your old heads for separate Glowplugs.
Stuff required:- Lathe with 3 jaw CC chuck
Tailstock drillchuck
7/32" drillbit.
23/64" drillbit ground square OR a 23/64" Endmill
1/4" x 32tpi Tap (for glow plug)
Dial Indicator, and/or a dial or digital vernier
small vice, Hammer, and 3/32" Pinpunch

1. Sit the Cox 0.049 cyl. head upside down on the open vice jaws and gently tap the old glow-element out with the 3/32" Pinpunch.
2. Put an old 049 cylinder, with parallel sides, in the lathe chuck, then screw the cyl. head into the cyl., finger tight.
3. With a 7/32" drill in the tailstock, drill right through the Head. Now face off the Head. Not a lot, just a skim.
4. Take the head off, (remove glow head from cylinder), and measure with a depth gauge, the distance from the top of the head, to the edge of the combustion chamber and the 7/32" hole. NOTE measure EACH head; they vary more than can be seen with 'the naked eye!'
For Example, we'll say our first measurement is 0.3325". Now ,with the depth gauge, measure from the copper washer to the end of the thread on one of your Glowplugs. for our example , we'll say that is 0.1845". Subtract 0.1845" from 0.3325" equals 0.1480", the depth we need to counterbore the head.
5. Put the head back on the cyl. in the lathe, and with the Endmill OR the SQUARE-ENDED 23/64" drill in the tailstock chuck, bring the tailstock up untill the drill just touches the head and clamp the tailstock.
6. Set the dial indicator up at the face of the tailstock chuck and zero it.
7. Drill into the head 0.1480".
8. Now put the 1/4" x 32 tpi tap in the tailstock, and turning the HEADSTOCK chuck BY HAND, while pushing the tailstock with your other hand, thread the head for the glow plug.
wasn't that easy?

Much cheaper than buying new heads with integral glow elements, isn't it?

My thanks to George Tattersall in New Zealand.

Please comment and ask questions.



happydad

Hey Mike,

As you read this, coursing your way through our glorious postal system, are some 9 or so Cox glowheads of various and dubious quality. Sharing their company, is an .049 cylinder that harkens back to the days of my youth. Actually, I ain't got a clue about its age...it was just laying in the cigar box with my other battered War Veterans.

Hope they can help you with your project!

Junkyard Kim

I set a couple aside for you. I'll probably get them in the mail Tuesday.

thanks guys! much appreciated

if you know of anyone else with some send them my way

5 are headed your way as of this past Saturday Mike.
Bob

thank you!

gahh I tried to use the right hand thank you on the forum to everyone and it only said I can do it once!
I appreciate all

If you need any more, I found 4 that have burnt out filaments. Postage is $2.95 within Canada or add as freebies to an order.

Instead of converting them to take regular 1/4" glow plugs, convert them to take Turbo plugs. You do it with a #3 Phillips screwdriver bit (to cut the hole and 60 degree taper seat at the bottom) and IIRC, a M8x0.75 tap for the threads. Turbo plugs can be had on ebay (mainly for cars), I've seen them for as little as $3 each. A year or so ago Tower had a bunch on clearance, I picked up 40 or 50 of them. There are instructions somewhere on the RC BBSs - I'll go look for the link.

You could also convert them to take a Nelson plug (these are $4.75 each), but you need more exotic tooling (which Henry Nelson can supply).

Iskandar

iskandar taib wrote:Instead of converting them to take regular 1/4" glow plugs, convert them to take Turbo plugs. You do it with a #3 Phillips screwdriver bit (to cut the hole and 60 degree taper seat at the bottom) and IIRC, a M8x0.75 tap for the threads. Turbo plugs can be had on ebay (mainly for cars), I've seen them for as little as $3 each. A year or so ago Tower had a bunch on clearance, I picked up 40 or 50 of them. There are instructions somewhere on the RC BBSs - I'll go look for the link.

You could also convert them to take a Nelson plug (these are $4.75 each), but you need more exotic tooling (which Henry Nelson can supply).

Iskandar

thats interesting, I need to sit down and visualize what your saying.

Cox International wrote:If you need any more, I found 4 that have burnt out filaments. Postage is $2.95 within Canada or add as freebies to an order.

hey! if you dont mind putting them off to the side, I will remind you when I place my order for the radials cylinders.
only if you dont mind hanging onto them for awhile, the way schools going I am going to be busy till december sometime.