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Castle Nut or Nylock Nut to hold prop on? |
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davidg 
Grand Poobah 
Joined: January-07-2008 Location: NW Chicagoland Status: Offline Points: 2239 |
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 Topic: Castle Nut or Nylock Nut to hold prop on?Posted: June-01-2018 at 1:21am |
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What do you guys like to hold props on....old school castle nut or nylock type nut? Does one offer any advantage vs. the other? I have a castle nut on it now, but, because of where the hole is for the pin, the nut doesn't snug all the way down. Problem solved with nylock nut, but, any downside to them?
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: June-01-2018 at 8:11am |
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Dave,
The downside to a nylon nut is you are only supposed to use them once. I've used them a couple times but the nylon becomes deformed and you can actually feel they don't grab as much. If you have done a proper job of lapping the prop on, you don't need to worry about the nut having to keep pressure on the prop. Run the castle nut up to seat the prop and then back it off to the next hole for the cotter. |
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 11093 |
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Posted: June-01-2018 at 9:09am |
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You could also read the thread in the link and buy a washer or 2 so that your castellated nut would line up right with the hole for the cotter pin
link |
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Duane in Indy
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Joined: October-26-2015 Location: Indiana Status: Offline Points: 1578 |
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Posted: June-01-2018 at 10:32am |
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OR if you have trouble deciding which is best then go this route and it should satisfy everyone.
  
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Keep it as original as YOU want it
1978 Mustang (modified) |
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Duane in Indy
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Joined: October-26-2015 Location: Indiana Status: Offline Points: 1578 |
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Posted: June-01-2018 at 10:38am |
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You could always sand or file off the back side of the nut so it will engage in the next hole with the nut Tight against the prop. Only take .005 off to index 1/2 way to the next slot. (each slot would be .010 apart)
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Keep it as original as YOU want it
1978 Mustang (modified) |
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phatsat67
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Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
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Posted: June-01-2018 at 10:58am |
I have ran a lock nut for thousands of hours without a cotter pin in the end. Worst that has ever happened is it backed off slightly (about as much as a castle nut gets clearance during usage). Finally broke down and bought a fresh one last season. The only one still worked just fine and I bet I had it off and on 20 different times between 2 boats. They are reliable. |
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 11093 |
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Posted: June-01-2018 at 11:02am |
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Soooo...........Duane
If I got this right, you sand your nuts and drill holes in them too
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8122pbrainard wrote: