hinge pins

[swoeric]

I remeber seeing something on here once about the tcraft supply store having hinge pins. could you send me to that link. does anybody know ifthe tcraft store pins need to be cut down a bit i found some of the same diameter but need drilled and cut down some.

Thank you
Eric

[Pearson]

Re: hinge pins

http://www.aircraftspruce.com/catalog/hapages/clevispins.php

Use the little arrow at the right side of the blank box to choose your size.

[TimHicks]

Re: hinge pins

Is this correct? I thought that the hinge pins were a different, hardened steel. I notice that the ACS pins say, "Used with clevis forks and in secondary controls which are not subjected to continuous operation."

[Larry Lyons]

Re: hinge pins

The original pins on the control surfaces have knurling right under the head to hold them in place and not let them turn in the fuselage. If there was any wear it would be in the elevator or rudder not the basic structure itself.
Larry

PS: I believe these are made of unobtainium.

[freightpilot27]

Re: hinge pins

They are not made of unobtainium, but i think maybe noweightium, nobreakium, or even nowearium.

Univair sells them.

UA-48 Hinge pin
A-8001 Hinge pin

They have the correct bushings too.

[Pearson]

Re: hinge pins

My plane has been flying for ten years with clevis pins. According to the mil spec the 1/4" diameter pins have 7360 lbs of double shear strength.

[Steve Green]

Re: hinge pins

They are not made of unobtainium, but i think maybe noweightium, nobreakium, or even nowearium.

Univair sells them.

UA-48 Hinge pin
A-8001 Hinge pin
They have the correct bushings too.

$12.81 for A-8001
$19.64 for UA-48
$4.60 for the A-920 bushing

[Eric Tyson]

Re: hinge pins

It has been my experiance that the parts are priced as they had solid gold core and are covered(camo) in Aluminum or Steel so normal people wouldn't want anything to do with them. Glad I know better

[M Towsley]

Re: hinge pins

Parts are priced to cover the liability and cost of lawyers if, or when, it possibly breaks or contributes to an accident.

I have a Wag Aero catalog from the '70's. A simple primer was like $6.95 or $7.95. Now price one of them. Automatic liability costs included.

[Len Petterson]

Re: hinge pins

Liabilety cost are included or should the laywer be part owner of the company with a No Leaveing option?
Ever sence Ralp Nader the cost have gone up He did some good but I think things are going to far today. A town spends millions for consulting becuase of it.
The counsel members dont dare makeing a desions becuase they cant use common sence! We pay large increases on parts and new aircrafts are out of reasch for most pepole becuase of it.
Not only on aircraft stuff what about cars and other products
Maybe we should have engenering experts and since proffesors instead of politichans and laywers?
Lenny

[3Dreaming]

Re: hinge pins

$12.81 for A-8001
$19.64 for UA-48
$4.60 for the A-920 bushing

The cost of these pins are cheap if they have the proper knurling. This is compared to having to cut a hole in an aileron to replace the hinge mount, recovering a horizontal because the pin mount is loose on the pin, or the same with a vertical or fuselage. The pin sould only rotate in the bronze bushing, and be stationary in the other part. Tom

[swoeric]

Re: hinge pins

solution 1 they do make these and sell them at the t-craft supply store. and it hasthe knurling. zinc plated 1 inch too long no hole for pin.

solution two glass bead originals, couple mils of dry film lube and baked.

grind to shape beat to fit paint to match thats how the big boys do it.

[astjp2]

Re: hinge pins

I am calling bullshit on the liability, when their struts came out they were almost 2400.00, Lee Budde got an stc and sold them for 400 each, univair dropped their price to match. Their landing gear is 1500 per let and only in tapered gear. If someone got an stc and sold them for 400 like a cub gear which is 250-300, their prices would be dropped to match. Tim

[Pearson]

Re: hinge pins

AMEN Tim!!!

[M Towsley]

Re: hinge pins

Ok, Tim. I feel like I'm in the school yard double-daring you. I will call double-bullshit on your original call.

Besides some typical price gouging, liability costs are included in some pricing. Just because your strut-buddy charges less means he is willing to take on more liability than some others. Parts prices are outrageous, for the most part. But, your friendly lawyer has his or her fingers into just about everything. You cannot tell me the typical simple push-pull primer that has been around forever, (and cost $7.95 in the 70's), is now $185.00 just from price gouging. Scenario...A plane goes down from lack of power. Turns out the primer backed out and was pulling fuel from the primer line, just enough for the plane to not maintain altitude. The pin failed, it was not pilot error. Guess who immediately gets sued once they figure out what really happened. Ever wonder after an aircraft crash why the aircraft manufacturer and engine manufacturer representatives show up at the scene? Liability plays a large part, it not from just their curiosity. Today is so litigious people threaten to sue if someone spits on their sidewalk. I need to live in your world, it must be a nice and simple place to live where everyone gets along. Now hopefully we can get back on the hinge pin issue.