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EdK (12-18-2015)
(12-17-2015, 08:03 PM)f350ca Wrote: If your worried about strength cut the keyway in the ratchet 1/2 and step down to 10 mm with the key
Well that would work if I had a 1/2" keyway broach..... but naturally, I don't. 
I don't think I would ever see anything come through my home shop that required a key that big. I do have a 1/2" broach, but it's a square broach. Because it cuts on all 4 sides it needs a round hole to start in. I really should pick up a few metric broaches though. Plenty of imports around here - tools, machines, cars.... 
But for now at least I think I will go with the 10mm - 3/8" stepped key idea. If I end up shearing off a key I can always re-cut the keyway in the ratchet later. Or just weld the ratchet to the pinion... depending on what kind of mood I am in after shearing off a key and busting my knuckles.
Willie
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(12-16-2015, 09:24 PM)Highpower Wrote: (12-16-2015, 01:49 PM)RobWilson. Wrote: ...... few being more than 2 but less than 4
Too funny Rob. That is exactly the way it works, as my wife tells me. We used to do battle over those terms sometimes. But she informed me that a "couple" means 2, and a "few" means 3! Been that way ever since....
Ha ha ha ha Willie it sounds like your good lady knows a thing or few
Any way I think you have gone way overboard with your controler , total over kill !
Quote: But being a typical lazy American I would want a controller that reads out in Fahrenheit so I know immediately what I'm looking at. Conversion chart?
And the method I am about to describe is in Fahrenheit , here goes , I was playing trivial pursuit last night the new edition and I got this question and thought of Willie straight away  ,not sure I should have typed that !
Question ,
What can you tell about the weather by counting cricket chirps ? 
Answer ,
Temperature - The old farmer's Almanac suggests counting the chirps in 14 seconds ,then adding 40 to get the temperature in Fahrenheit 
Whats do you think ? ,no need for a thermocouple or black box
Rob
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Highpower (12-20-2015)
If it's a Canadian cricket, would it chirp in Celcius?
Mike
SB 10K (1976) Rockwell vertical mill (1967) Rockwell 17" drill press (1946) Me (1949)
RobWilson
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(12-20-2015, 11:23 AM)wawoodman Wrote: If it's a Canadian cricket, would it chirp in Celcius?
Nope you would need a phone app to do the conversion
Rob
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Posts: 4,452
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(12-20-2015, 05:16 AM)RobWilson. Wrote: ....I got this question and thought of Willie straight away ,not sure I should have typed that !
Rob
I had to laugh at that for a "couple" of reasons, but mostly because I just went through that yesterday myself. I saw this posted on another forum and immediately thought of a guy I used to work with turning wrenches, that happens to have 2 dachshunds at home. I just had to email this photo to him and suggest he re-name his animals "Imperial" and "Metric".
Willie
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a child of the 60's and 50's and a bit of the 40's 
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He replied to me last night..... "WHAT THE ****!!!!???? This is like the 5th time somebody has sent me that same picture in the last week!"
Willie
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(12-17-2015, 01:42 PM)f350ca Wrote: How about a stepped key Willie. 10mm to fit the shaft and 3/8 to fit your keyway.
Is it better to trim a little from both sides of the key, or take it all off from one side? 
No engineering schooling on my resume. 
I'm just guessing one 90° corner (stress riser) is better than having 2? 
Willie
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