Has anyone has a problem with turnbuckles loosening on their own when the leeward stays are slack in a stiff breeze? David Hill M17 -- "Grouper"
no, because my turnbuckles are safety-wired. Tod -----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of david_hill@idg.com Sent: Tuesday, July 01, 2003 9:33 AM To: montgomery_boats@mailman.xmission.com Subject: M_Boats: Re: montgomery_boats Digest, Vol 4, Issue 15 Has anyone has a problem with turnbuckles loosening on their own when the leeward stays are slack in a stiff breeze? David Hill M17 -- "Grouper" _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
David, On my very first sail in my M-17, one of the lower shroud turnbuckles came completly unscrewed. Ever since, I always run a short length of line through the upper and lower shroud turnbuckles and tie them together to prevent this. Clarence Andrews M-17 # 604 ----- Original Message ----- From: <david_hill@idg.com> To: <montgomery_boats@mailman.xmission.com> Sent: Tuesday, July 01, 2003 10:33 AM Subject: M_Boats: Re: montgomery_boats Digest, Vol 4, Issue 15
Has anyone has a problem with turnbuckles loosening on their own when the leeward stays are slack in a stiff breeze?
David Hill M17 -- "Grouper"
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
"On the subject of closed-barrel turnbuckles, it is my firm belief that they should be outlawed. This opinion also applies to compression locknuts, which inherently slack up when the turnbuckle is heavily stressed. If the locknuts don't slacken up, then they must be so tight that they apply additional load to the turnbuckle threaded section. Furthermore, there is no way of looking at locknuts to tell whether they are doing their job or not, as compared to the cotter pin [of an open-body turnbuckle], which is either in place or not. Another important defect of the closed-barrel turnbuckle is that it is impossible to see how much thread is buried. Often when it is necessary to slack a shroud or stay to get the correct mast trim, one may unknowingly get dangerously near the end of the threads. This has caused many unnecessary accidents." --Rod Stephens, from You are First, by Francis S. Kinney David Fann Montgomery 17 Dulcibella
Don't know if I've ever seen a closed-bodied turnbuckle, but it sure SOUNDS like a bad idea . . . ----- Original Message ----- From: "David Fann" <dafann@ufl.edu> To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Sent: Tuesday, July 01, 2003 2:32 PM Subject: montgomery_boats Digest, Vol 4, Issue 15 "On the subject of closed-barrel turnbuckles, it is my firm belief that they should be outlawed. This opinion also applies to compression locknuts, which inherently slack up when the turnbuckle is heavily stressed. If the locknuts don't slacken up, then they must be so tight that they apply additional load to the turnbuckle threaded section. Furthermore, there is no way of looking at locknuts to tell whether they are doing their job or not, as compared to the cotter pin [of an open-body turnbuckle], which is either in place or not. Another important defect of the closed-barrel turnbuckle is that it is impossible to see how much thread is buried. Often when it is necessary to slack a shroud or stay to get the correct mast trim, one may unknowingly get dangerously near the end of the threads. This has caused many unnecessary accidents." --Rod Stephens, from You are First, by Francis S. Kinney David Fann Montgomery 17 Dulcibella
participants (5)
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David Fann -
david_hill＠idg.com -
Honshells -
htmills＠bright.net -
n9ca