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Mounting "things"

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu May 21, 2015 12:51 pm Post subject: Mounting "things"

At 07:57 PM 5/20/2015, you wrote:



 Hi Bob,



 Several years ago, you were liquidating your stock of these little

 doodads, and I bought a bunch.  Wish I'd bought more, because they're very handy.



 I assume you don't have any left to sell. I'm down to my last

 half-dozen or so, and am jealously guarding those.



 Any idea where you originally got them, or even what "they" 

 actually called the little beasties?



    They came from the 'you name it' bins of a local

    industrial surplus store called The Yard. After my

    initial studies on their utility, I purchased all

    they had. Sold out pretty quickly. They said they

    didn't have any more. About a year later, another

    bin of them showed up on the dusty racks. Bought all

    of those too and sold out. Haven't see any more since.



    I've considered fabricating some. Even wrote an article

    on DIY Bond Studs for Kitplanes Aug 2013, p78.



 

 I'd like to find a source if possible. Don't need thousands,

 but I could probably use a few dozen if I can find them.

 My neighbor is looking for some as well.



 Just thought I'd check, since your phenomenal memory seems

 able to retrieve all kinds of stuff that I'd have long ago forgotten. 



 Thanks,

 Ron Cox 



    McMaster-Carr has these devices. Not sure I could

    manufacture and sell for any less. These should do

    the job for you. 



 [img]cid:.0[/img][/b] 



 

   Bob . . .

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ARGOLDMAN(at)aol.com
Guest

Posted: Thu May 21, 2015 1:21 pm Post subject: Mounting "things"

Those are devices made by Rotoloc  (rotoloc.com).

  

 They used to be carried by Mcmaste carr but I don't see them in the current  online catalog-- perhaps they still have them and the omission was an  over site. I used lots of them of various lengths and diameters.

  

 the mfgr should give you a dealer, or at least a distributor.

  

 Rich

  

  In a message dated 5/21/2015 3:53:49 P.M. Central Daylight Time,  nuckolls.bob(at)aeroelectric.com writes:

   	  Quote: 	
		  

At    07:57 PM 5/20/2015, you wrote:



Hi Bob,



Several years ago, you    were liquidating your stock of these little

doodads, and I bought a    bunch.  Wish I'd bought more, because they're very handy.



I assume    you don't have any left to sell. I'm down to my last

half-dozen or so, and    am jealously guarding those.



Any idea where you originally got them, or    even what "they" 

actually called the little    beasties?



   They came from the 'you name it' bins of a    local

   industrial surplus store called The Yard. After    my

   initial studies on their utility, I purchased    all

   they had. Sold out pretty quickly. They said    they

   didn't have any more. About a year later,    another

   bin of them showed up on the dusty racks. Bought    all

   of those too and sold out. Haven't see any more    since.



   I've considered fabricating some. Even wrote an    article

   on DIY Bond Studs for Kitplanes Aug 2013,    p78.

I'd like to find a source if possible. Don't need    thousands,

but I could probably use a few dozen if I can find them.

My    neighbor is looking for some as well.



Just thought I'd check, since    your phenomenal memory seems

able to retrieve all kinds of stuff that I'd    have long ago forgotten. 



Thanks,

Ron Cox 



      McMaster-Carr has these devices. Not sure I could

   manufacture    and sell for any less. These should do

   the job for you.    



[/b]



   

  Bob . . .  	


 [quote][b]

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ronaldcox

Joined: 24 Jan 2008
Posts: 41

Posted: Thu May 21, 2015 1:27 pm Post subject: Mounting "things"

Thanks, McMaster-Carr has them, as Bob said.Â  Just ordered some.



They're not identical to the one I was asking about, but will serve the purpose just as well as the "originals".Â  Probably more substantial, too.

http://www.mcmaster.com/#perforated-base-studs/=xa5g0j



As for Rotaloc (the correct spelling) they do apparently make them.

http://www.rotaloc.com/products/bf/bf_m1_main.html



Thanks to all!

Ron





On Thu, May 21, 2015 at 4:20 PM,  <ARGOLDMAN(at)aol.com (ARGOLDMAN(at)aol.com)> wrote:

[quote]     Those are devices made by RotolocÂ  (rotoloc.com).

 Â 

 They used to be carried by Mcmaste carr but I don't see them in the current  online catalog-- perhaps they still have them andÂ the omissionÂ was an  over site. I used lots of them of various lengths and diameters.

 Â 

 the mfgr should give you a dealer, or at least a distributor.

 Â 

 Rich

 Â 

  In a message dated 5/21/2015 3:53:49 P.M. Central Daylight Time,  nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com) writes:

   	  Quote: 	
		  

At    07:57 PM 5/20/2015, you wrote:



Hi Bob,



Several years ago, you    were liquidating your stock of these little

doodads, and I bought a    bunch.Â  Wish I'd bought more, because they're very handy.



I assume    you don't have any left to sell. I'm down to my last

half-dozen or so, and    am jealously guarding those.



Any idea where you originally got them, or    even what "they" 

actually called the little    beasties?



Â Â  They came from the 'you name it' bins of a    local

Â Â  industrial surplus store called The Yard. After    my

Â Â  initial studies on their utility, I purchased    all

Â Â  they had. Sold out pretty quickly. They said    they

Â Â  didn't have any more. About a year later,    another

Â Â  bin of them showed up on the dusty racks. Bought    all

Â Â  of those too and sold out. Haven't see any more    since.



Â Â  I've considered fabricating some. Even wrote an    article

Â Â  on DIY Bond Studs for Kitplanes Aug 2013,    p78.

I'd like to find a source if possible. Don't need    thousands,

but I could probably use a few dozen if I can find them.

My    neighbor is looking for some as well.



Just thought I'd check, since    your phenomenal memory seems

able to retrieve all kinds of stuff that I'd    have long ago forgotten. 



Thanks,

Ron Cox 



Â Â     McMaster-Carr has these devices. Not sure I could

Â Â  manufacture    and sell for any less. These should do

Â Â  the job for you.    







   

Â  Bob . . .  	




[b]

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_________________
Ron Cox
Glasair Super II F/T
Under Construction at C77 - Still just about to fly!

Dave Saylor

Joined: 11 Jan 2015
Posts: 209
Location: GILROY, CA

Posted: Thu May 21, 2015 2:24 pm Post subject: Mounting "things"

I've had pretty good luck using a flathead screw pointed up through a large-area countersunk washer:

http://www.aircraftspruce.com/catalog/hapages/nas549washers2.php?clickkey=14605



I scratch up the washer with some 80G.Â  Then dab a little adhesive in the countersink and the bit recess after most of the threads are through.

--Dave



  [quote][b]

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_________________
--Dave
KWVI

nuckolls.bob(at)aeroelect
Guest

Posted: Thu May 21, 2015 8:11 pm Post subject: Mounting "things"

At 05:22 PM 5/21/2015, you wrote:



  	  Quote: 	
		  I've had pretty good luck using a flathead screw pointed up through a large-area countersunk washer:



  http://www.aircraftspruce.com/catalog/hapages/nas549washers2.php?clickkey=14605 



 I scratch up the washer with some 80G.Â  Then dab a little adhesive in the countersink and the bit recess after most of the threads are through.



 --Dave 	


 I fiddled with that process a bit. The biggest 'risk' is

 to end up with a stud that is not firmly fastened to its

 base. If the builder wishes to use metallic lock nuts on the

 stud, it can really ruin your day if the stud twists on its

 base after it's glued down to the airframe.



 I experimented with several techniques for securing the stud

 to the washer that included high strength epoxies under the

 head of the stud-screw, in the threads just under the head,

 in the threads and under the faying surface of a retaining

 nut on the away-side of the washer.



 Even sliver soldered a few. Strength was great but finish

 was ugly.



 I was able to achieve attachments that offered a twist out

 resistance about 2x the torque needed to drive the metallic

 lock nut. But the process was labor intensive. I didn't think

 I could compete well with those parts from McMaster.



 If I stumble across any more attractive options, I'll bring

 them to the list muy pronto.



 

   Bob . . .    [quote][b]

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Dave Saylor

Joined: 11 Jan 2015
Posts: 209
Location: GILROY, CA

Posted: Fri May 22, 2015 6:13 am Post subject: Mounting "things"

I agree, the MMC solution is quick and easy.



FWIW, a few more details: Â I was able to find some Hysol in cartridges that looked and smelled like the stuff that comes with clickbonds called Hysol/Loctite 8000.



Also, I recall bending the edge of the washer slightly in 3-4 places with some duckbills. Picture attached.

That prevents squeeze-out of the glue under the washer's flange, and allows for a little cavity between the washer and the screw.

Of course the customer is always right, so they must have had some pretty good glue (insulation?) to justify metal locknuts so close to the adhesive 



--Dave

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