Log in
Search
Latest topics
» Happy Anzac Day!by Boats13 Today at 11:03 pm
» Three -- sold out (making two more) Cox .010 Carburetors with wrench
by sosam117 Today at 10:41 pm
» Fox .35 Modifications
by Ken Cook Today at 10:20 pm
» Project Cox .049 r/c & Citabrian Champion
by MauricioB Today at 4:08 pm
» Jim Walkers FireBee - This is going to be fun
by rsv1cox Today at 3:56 pm
» Revivng Some Childhood Classics
by rsv1cox Today at 7:17 am
» Introducing our Cox .049 TD Engines
by getback Today at 6:20 am
» Roddie's flat-bottomed boat..
by Levent Suberk Today at 12:23 am
» Cox powered jet-pump for model Sprint Boat
by roddie Yesterday at 10:25 pm
» Micro Draco Gets to Fly on a Beautiful Morning.
by rdw777 Yesterday at 8:15 pm
» Jim Walker Firebaby
by rdw777 Yesterday at 8:06 pm
» Hydro-bat by Vic Smeed: engine probs
by GallopingGhostler Yesterday at 5:12 pm
Cox Engine of The Month
Glow Plug element winding
Page 1 of 1
Glow Plug element winding
The glow plug elements were wound on miniature spring winding machine specifically built for that purpose. It had several dies and mandrels for the different size glow plugs (.010- 0.15)
The elements would be trimmed automatically by a small shear once they were wound, and then fall into a small low sided collection pan. Next, a girl would carefully place the element on the insulated center electrode for the plug, and spot weld them to it. Then, the other end of the element was spot welded to the inside center edge of the combustion chamber dome.
The reels of platinum/rhodium wire were kept in a locked safe, as it was very expensive, and closely controlled by the supervisor who secured them during breaks or periods of inactivity. However, there was always a pile on the floor around the pedestal base of the winder and spot welders of tiny 1/32" long tails that came off during the trimming and spot welding processes, and coils that had bounced out of the trays occasionally. Although the girls periodically swept up the scrap platinum wire for re-cycling, when we re-arranged the production floor and moved the winding/welding machines, there was a huge pile of platinum scrap underneath them that had gone unnoticed for years! Because this was done when the line was shut down and the normal supervisor was not there, it was a free-for-all and you should have seen us scampering to scoop up the scrap platinum as fast as we could before anybody noticed!
The elements would be trimmed automatically by a small shear once they were wound, and then fall into a small low sided collection pan. Next, a girl would carefully place the element on the insulated center electrode for the plug, and spot weld them to it. Then, the other end of the element was spot welded to the inside center edge of the combustion chamber dome.
The reels of platinum/rhodium wire were kept in a locked safe, as it was very expensive, and closely controlled by the supervisor who secured them during breaks or periods of inactivity. However, there was always a pile on the floor around the pedestal base of the winder and spot welders of tiny 1/32" long tails that came off during the trimming and spot welding processes, and coils that had bounced out of the trays occasionally. Although the girls periodically swept up the scrap platinum wire for re-cycling, when we re-arranged the production floor and moved the winding/welding machines, there was a huge pile of platinum scrap underneath them that had gone unnoticed for years! Because this was done when the line was shut down and the normal supervisor was not there, it was a free-for-all and you should have seen us scampering to scoop up the scrap platinum as fast as we could before anybody noticed!
jmendoza- Silver Member
- Posts : 70
Join date : 2017-07-18
Similar topics
» COX glow head filament dropping into the cylinder
» W Element Glow Heads
» Nelson flat element glow plugs
» (Trade) "W" element glow heads (pics added)
» Cox Tee Dee high-compression glow head question
» W Element Glow Heads
» Nelson flat element glow plugs
» (Trade) "W" element glow heads (pics added)
» Cox Tee Dee high-compression glow head question
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum