If the grip range is too low (or the thickness of the wall too big), the
threaded hole will be deformed. This will make it impossible to screw the bolt.
If you have problems driving the bolt in, drill the RivNut out and use one with
a bigger grip range.
I found that the RivNuts that come by default with the tool, are not long
enough.
You said that you ordered extra ones, which is a good sign.
Btw. I used them to attach a clutch to the mast for my jib halyard. It is
working well for two seasons.
Marek
Sent from my Android-based can on a string
-------- Original message --------
From: Matt Wolford via CnC-List <cnc-list@cnc-list.com>
Date: 2022-10-31 22:34 (GMT-05:00)
To: 'Stus-List' <cnc-list@cnc-list.com>
Cc: wolf...@erie.net
Subject: Stus-List Re: Vang repair
Marek:
Once again, I appreciate your insight. Today I ordered some
RivNuts and a tool. I was concerned about the tight tolerance of the grip
range, so I did additional research. I found aluminum RivNuts with a broader
grip range, so I decided to order them. In addition, it occurred to me that
having aluminum on aluminum was probably better. The replacement screws will
be stainless, but I can coat them with Tef Gel or something. Better to not
have dissimilar metals working against each other at the RivNut interface.
I think this will be a good solution. Thanks to you and the
other listers who provided advice. I’ll keep you posted.
Matt
From: Marek Dziedzic via CnC-List <cnc-list@cnc-list.com>
Sent: Monday, October 31, 2022 9:34 PM
To: Stus-List <cnc-list@cnc-list.com>
Cc: Marek Dziedzic <dziedzi...@hotmail.com>
Subject: Stus-List Re: Vang repair
Be very careful about the grip range. The RivNuts come in different sizes
(guess how I know). Measure the thickness of the boom wall and get the right
RivNuts.
When I needed them, I had to switch between imperial and metric to find the
right size.
Good luck
Marek
Sent from my Android-based can on a string
-------- Original message --------
From: Matt Wolford via CnC-List
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Date: 2022-10-31 12:53 (GMT-05:00)
To: 'Stus-List' <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Cc: wolf...@erie.net<mailto:wolf...@erie.net>
Subject: Stus-List Re: Vang repair
Getting ready to pull the trigger on the RivNut idea. The stainless RivNuts
I found have a grip range of 0.027"-0.125". I was able to measure the
thickness of the aluminum I'm going through: 1/8" (maybe a micron or two
heavy), which is the top of the range. For those familiar with these
things, should I look for RivNuts with a slightly longer grip range, or is a
.125 top end of the range meant for 1/8" applications? Please advise (if
you know). Thanks.
-----Original Message-----
From: Marek Dziedzic via CnC-List
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Sent: Monday, October 31, 2022 12:08 PM
To: Stus-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Cc: Marek Dziedzic <dziedzi...@hotmail.com<mailto:dziedzi...@hotmail.com>>
Subject: Stus-List Re: Vang repair
>From what I know, the RivNuts are better for shear load (rather than for
pull).
Also, be careful how long the bolts you use. You don't want the bolts
sticking inside the boom (if you have any lines going there).
Just a few cents
Marek
1994 #122 "Legato"
Ottawa, ON
