MS20074-05-24 bolts

wrote:
This is a personal experience with AN fasteners. Here in the far
North, tailwheel bolts of the AN variety are very commonly broken when
landing in conditions they were never meant to endure, i.e., off-
airport boulder patches. Someone discovered that if you replace that
AN bolt with a CAT bolt, voila, problem solved. Standard Caterpillar
bolts are equivalent to grade 8 and they have VERY strong ones for
special applications. They come in a variety of sizes, but not "all"
sizes, so you may have to adjust things a bit to get the closest size
available to fit your application. Check the price, you will be
pleasantly surprised. Good luck.


Just be careful as often the engineer designed the bolts to be the
"fuse" in the system. Replacing a grade 3 or 5 bolt with grade 8 can be
akin to replacing a fuse with a penny. It may not hurt for a long time,
but there comes the day...

Matt

"Matt Whiting" wrote in message
news

Just be careful as often the engineer designed the bolts to be the "fuse"
in the system. Replacing a grade 3 or 5 bolt with grade 8 can be akin to
replacing a fuse with a penny. It may not hurt for a long time, but there
comes the day...


And you know this how ???? Example ???

Rich S.

Rich S. wrote:
"Matt Whiting" wrote in message
news
Just be careful as often the engineer designed the bolts to be the "fuse"
in the system. Replacing a grade 3 or 5 bolt with grade 8 can be akin to
replacing a fuse with a penny. It may not hurt for a long time, but there
comes the day...


And you know this how ???? Example ???

Rich S.


Not tryoing to start an argument---but maybe it's better to jerk the
tailwheel off the spring, than to jerk the spring out of the ass of the
airplane!--Jerry

Jerry Wass wrote:
Rich S. wrote:
"Matt Whiting" wrote in message
news
Just be careful as often the engineer designed the bolts to be the
"fuse" in the system. Replacing a grade 3 or 5 bolt with grade 8 can
be akin to replacing a fuse with a penny. It may not hurt for a long
time, but there comes the day...


And you know this how ???? Example ???

Rich S.

Not tryoing to start an argument---but maybe it's better to jerk the
tailwheel off the spring, than to jerk the spring out of the ass of the
airplane!--Jerry

Good thinking, Jerry.

Rich S., I know this because I'm an engineer.

Here's an example:

http://www.howard-australia.com/products/Jaylor.htm

Bolts designed to fail in shear and protect more expensive components
are very common. A quick Google search should have easily convinced you
of this. You are familiar with Google, right?

"Matt Whiting" wrote

Bolts designed to fail in shear and protect more expensive components are
very common. A quick Google search should have easily convinced you of
this. You are familiar with Google, right?

I can certainly understand the value of a shear pin, in rotable machines.
I'm not so sure of the value in the case of a tailwheel.

If you were to hit a tail wheel hard enough to shear an axle in the tail
wheel, the force that did that damage is still going to be there, and is
going to continue pressing the tail wheel spring, until all the force has
been dissipated.
--
Jim in NC

" Someone discovered that if you replace that
AN bolt with a CAT bolt, voila, problem solved. "

That would indicate that the tail does not break off instead of the
bolt breaking, after a stronger bolt is used.

"Matt Whiting" wrote in message
news
Rich S., I know this because I'm an engineer.

And I'm not - that may be why I asked.

Here's an example:

http://www.howard-australia.com/products/Jaylor.htm

I notice that they make a point of stating that the bolt is a shear bolt.
Must be a bit unusual if they feel the need to mention it.

Bolts designed to fail in shear and protect more expensive components are
very common. A quick Google search should have easily convinced you of
this. You are familiar with Google, right?

I don't remember getting snotty with you, Oh mighty engineer whose
unreferenced opinions are above question.

One more question - why should I do the search? You made the statement and I
simply asked for a reference. I did not **** in your cornflakes. Stay away
from mine.

Rich S.

Rich S. wrote:
"Matt Whiting" wrote in message
news
Rich S., I know this because I'm an engineer.

And I'm not - that may be why I asked.

Here's an example:

http://www.howard-australia.com/products/Jaylor.htm

I notice that they make a point of stating that the bolt is a shear bolt.
Must be a bit unusual if they feel the need to mention it.

Bolts designed to fail in shear and protect more expensive components are
very common. A quick Google search should have easily convinced you of
this. You are familiar with Google, right?

I don't remember getting snotty with you, Oh mighty engineer whose
unreferenced opinions are above question.

You are confusing matter-of-fact with snotty.


One more question - why should I do the search? You made the statement and I
simply asked for a reference. I did not **** in your cornflakes. Stay away
from mine.

You should do your own search as you should never trust answers you see
posted in a newsgroup.

I never touched your corn flakes? What is your problem?

Matt