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Canopy ball stud

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JonathanMilbank

Joined: 14 Apr 2012
Posts: 391
Location: Aberdeen area

Posted: Sat Apr 01, 2023 1:33 am Post subject: Canopy ball stud

Does anyone know the dimensions of the canopy ball studs, please? What is the thread and the diameter of the ball ? Here are links to suppliers:



https://www.ebay.co.uk/itm/112402496613?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=cIQwD279Q8a&sssrc=2349624&ssuid=dW2b1pNUSLS&var=&widget_ver=artemis&media=COPY



https://www.sgs-engineering.com/gas-struts/end-fixings/ball-extensions



I've fitted new gas struts which are proving sticky / jerky when opening the canopies a little, then become smoother when the canopy opens wider. A threaded end has broken off one ball stud and I'm loathe to unscrew another in order to make measurement of the thread.



Hopefully the gas struts will become smoother in operation with the passage of time.

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Area-51

Joined: 03 May 2021
Posts: 399

Posted: Sat Apr 01, 2023 10:42 pm Post subject: Re: Canopy ball stud

Most gas struts will have a C strap clip at each end (some have a wire spring clip); extend the strut all the way and remove the clip; the socket will come away from the ball.



Give the shaft a light coating of silicone grease to affect smooth op.

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rparigoris

Joined: 24 Nov 2009
Posts: 797

Posted: Sun Apr 02, 2023 5:19 pm Post subject: Re: Canopy ball stud

Hi Jonathan

Ends up I have a spare ball stud and just measured it for you.

A little difficult, I measured across threads and got .186". A 10-32 die wouldn't go on by hand.I tried a 5 x .8mm tap into the nut and it wouldn't go in?

OK got it figured. The threads are 10-32. They plated after they ran a die on them. I ran die on threads and just a tad of plating came off.



So:

** The threads are 10-32

** The length of threaded portion is .390" with a rounded tip

** There is a shoulder on the .390" which is .194" diameter and ~.062" long which isn't threaded

** Where you grab with a wrench (circle with 2 flats) has the circle diameter at .312" and the flats .270" (7 mm)

** The ball is .314" in diameter



Hope that helps

Ron P.

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