Top Dead Center on Blackhawk
- Thread starter El Guapo
- Start date
Help Support Ruger Forum:
contender
Ruger Guru
As noted,, about 10 degrees.
Well......you all lost me on this one.................
TDC is for timing on an internal combustion engine, and
degrees, is the difference between a T-shirt and long sleeves!!
Cheers,
JAYDAWG
TDC is for timing on an internal combustion engine, and
degrees, is the difference between a T-shirt and long sleeves!!
Cheers,
JAYDAWG
Along with the marbles I offered a 1978 AMF Roadmaster Moped in trade for something with our mutual friend Flattop44. The timing is off on it and with you being an internal combustion whizz I figured you are the man to solve the problemWell......you all lost me on this one.................
TDC is for timing on an internal combustion engine, and
degrees, is the difference between a T-shirt and long sleeves!!
Cheers,
JAYDAWG
contender
Ruger Guru
"Well......you all lost me on this one......"
JAYDAWG,, we are talking Rugers here. And especially the part about assembling the barrel to the frame. The OP asked about hand tightening the barrel to the frame, and where it should stop PRIOR to torquing it to the main frame. Done properly,, (meaning the barrel was machined correctly to mate with the frame threads,) you hand tighten it,, and it stops about 10 degrees before top dead center. Then you torque it into place,, AND it aligns the sights properly without any thread choke stress on the barrel.
Often there is a gun where the barrel stops before 10-12 degrees of TDC,, and it gets over torqued into place,, creating a tight area inside the barrel, known as "thread choke." Firelapping is used to remove this tight area.
JAYDAWG,, we are talking Rugers here. And especially the part about assembling the barrel to the frame. The OP asked about hand tightening the barrel to the frame, and where it should stop PRIOR to torquing it to the main frame. Done properly,, (meaning the barrel was machined correctly to mate with the frame threads,) you hand tighten it,, and it stops about 10 degrees before top dead center. Then you torque it into place,, AND it aligns the sights properly without any thread choke stress on the barrel.
Often there is a gun where the barrel stops before 10-12 degrees of TDC,, and it gets over torqued into place,, creating a tight area inside the barrel, known as "thread choke." Firelapping is used to remove this tight area.
condender,
Thank you for the explanation. Makes perfect sense now.
I'm learning & enjoying it!
JAYDAWG
....forgive Jaydawg, after all he is a CAR GUY.........
contender
Ruger Guru
LOL!!!!!!!!!
So, if you set it at 5* do you get pre-ignition?
contender
Ruger Guru
pre ignition is a GM problem I believe...........
or was it old Harleys??
or was it old Harleys??
If he loses his marbles I will supply him with more!....forgive Jaydawg, after all he is a CAR GUY.........
That's ok, you fellers yuck it up.......I'll be fine
