...it bonds two solid metal shaft pieces together that will become a propshaft...https://www.gannett-cdn.com/-mm-/d50...N-55468041.JPG
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...it bonds two solid metal shaft pieces together that will become a propshaft...https://www.gannett-cdn.com/-mm-/d50...N-55468041.JPG
Mercury Marine employees donate to Wisconsin's Food pantry...https://www.tradeonlytoday.com/.imag...0NDQ5/merc.jpg
Mercury Racing QC4V on the dyno, in the year 2000, with 75 minutes of break-in time & then 30 minutes of dyno performance verification time. A process that every Mercury Racing QC4V goes through, before being crated & shipped...http://www.mercuryracing.com/wp-cont...-Mesa-SFQ1.jpg
I didnt know Fred did the engine as well, thanksQuote:
Originally Posted by FUJIMO
I'll ask.
Oh, like OMC starting doing on the driveshafts back around 1970?Quote:
Originally Posted by FUJIMO
[QUOTE=Mark75H;3007266]Oh, like OMC starting doing on the driveshafts back around 1970? To set the story stright, Mecury was enertia welding (friction) alos in the 70's. I was Chief Inspector then and the only method of testing was to break one in a press - once per shift. I initiated ultrasonic weld inspection utilizing shafts where we created known defects of varying depths to calibrate the equipment, then every shaft could be checked. Later a cross slide was added to take the rolled back mateial off and temper the weld in an oil bath right after welding. Trust me, OMC had nothing on us. When Mercury started the Mariner venture, a group of Japanese toured some of the plants. I got a call from our foundry and they were asking if they could see this operation. I could not authorize it, so I called my supervisor, the plant manager, explaining to him . He came totally unglued - the only reason the Japanese went to see the foundry was because somehow they knew our friction welder was on Hickory Street, same as the foundry. Figured once they got in on Hickory, they would be able to weasle their way in to see the friction welding operation. Didn't happen! We also had many WW2 veterans working - when Japanese did come thru, they would spray them with machine oil, spill coffee, drop parts - there were many hard feelings still present.
I have a silly question for you Bernie. Why did/do these shafts have to be made out of 2 pieces of metal rather than one solid piece? Different steel alloys, heat treatment, or? Just curious, thanks.
Stainless on the outside steel on the inside so it can run rollers on it, same for all manufactures.Quote:
Originally Posted by Speedfab
Merc had one piece steel for years that were hard chromed on the outside, fine for freshwater but salt?? ( great for racing)
OMC had friction welded drive and propshaft in 68 3cyl 55 for sure, trying to think if any earlier?
Then 69 everything that was thru prop exhaust.
http://www.screamandfly.com/attachme...6&d=1093229198...Eufala Nationals 1973 FJ's...