On Tuesday, May 21, 2019 at 7:26:59 PM UTC-4, John B. wrote:
On Tue, 21 May 2019 08:32:02 -0700, sms
wrote:

On 5/20/2019 5:21 AM, AK wrote:
I want to get a bottle holder for my bike.

It has no pre-drilled holes for the holder.

I found some that clamp on but not sure if they would work with the wide tube that I would need to mount it to.

https://www.dropbox.com/s/llqwef4nym...71257.jpg?dl=0

Andy

Try these: https://www.amazon.com/dp/B001EIEHEC

This web site may help you find a product that will work:
http://nordicgroup.us/cageboss/

Well, your vaunted site, that claims to be an expert on rivnuts since
2002 is wrong in their statement that

"A properly installed Rivnut does not exert any stress on the inner
and outer walls of the tubing. The stress all radiates outward from
the splines of the Rivnut into the circumference of the hole.The
friction between the splines of the Rivnut and the hole keep it from
rotating."

There are some twenty, or so, different types of rivnuts today and a
number of them do not, in fact, have "splines" and they all do depend
on compression to resist torque loads and yes, some of them do have
added features to resist torque loads to a even greater extent.

You state that
"Without a machine shop, It would be very hard for someone to drill
perfectly sized holes, perfectly straight, and compress the Rivnut to
the exact optimum tightness. In a steel frame it's not a big deal if
it's not exactly right. In an aluminum frame it's a very big deal
because the integrity of the frame will be compromised. And even if
you managed to do it properly, you've still voided your frame
warranty"

To date, I have seen no evidence that you actually know what you are
talking about so please awaken us and tell us exactly what "machine
shop" features one requires to drill holes in a thin tube?

Oh yes! I quote from the "installation Instructions" of a major
supplier of "rivnuts" who says "These blind rivet nuts provide a
robust, versatile alternative to standard nuts and bolts. A low
profile design provides near-flush installation with no special hole
preparation required"

You might want to go into some detail about how rivnuts, that were
originally designed for and used on aircraft structures, are
installed? Do you actually suppose that an entire airplane is hauled
into some mythical "machine shop" to have a 1/4" hole drilled in the
wing.

In fact your entire site is simply one large exhibit of
miss-information, or to be less polite, "lies".

But, perhaps I am wrong so you might take the time to demonstrate that
you actually do know what you are talking about - with some reference
to keep you from telling lies, of course.
--
cheers,

John B.

That site that SMS linked to is just one of many reasons why anyone should take ANYTHING he says with a grain of salt. That's because he either outright lies or misrepresents data.

Cheers