Solreaver, have you ever heard of an expandable bolt?

Maleficio · Maleficio's Garage

If so, could you please explain it to me?

Thanx.

SolReaver · 05-02-2010, 01:48 PM

Malifico: What are you talking about?

I could elaborate, but it would be pure speculation.

Maleficio · Maleficio's Garage

Quote:

Originally Posted by SolReaver

Malifico: What are you talking about?

I could elaborate, but it would be pure speculation.

It's an F/A-18 airframe component. Airframers tried to explain it to me, but I didn't get it.

SolReaver · 05-02-2010, 09:59 PM

OK, in re: airframe components, I believe you are talking about the fancy equivalent of an "anchor bolt" which expands when a threaded bolt (or stud) is screwed down into it. Th recess on the frame is a truncated cone which barely accepts the maximum radius of the (bolt?, Anchor?) and when the bolt is expanded, it fills the cavity. To be honest with you I never worked on the 18, so I can't speak with certainty, But I DO recall "expansion anchors" that were used on Warthogs.

To illustrate the concept for your edification, pick up a few concrete anchors from Home depot and some bolts to thread into them. I use them for removing pilot bearings s I find it is faster and cleaner than the grease /dowel method. You are basically dealing with the same concept as an expandable bolt that goes into dry wall and holds a picture up. ( pick up one of them while you are at HD as well ) On an airframe though, it is mission critical ( EVERYHING attached to an airframe is..) so it is probably pretty fancy, expensive, and may need to be tested /replaced on a regular basis.

Does that help? Check with your buddies to see if I am even close on this one.

Maleficio · Maleficio's Garage

From what they told me, the expandable bolt is a long shaft with threads on both ends, not really an anchor nut.

I will inquire further tomorrow. It's been bugging me lately.

76FJ55 · 05-03-2010, 06:39 AM

Look here for a Tech Sales brochure on EDFs made by the Shur-Lock Corp. this may help you understand the design.

lfausty · lfausty's Garage

expandable bolt has a sleeve over it and as it screw tightens that sleeve sides expands

Maleficio · Maleficio's Garage

Quote:

Originally Posted by 76FJ55

Look here for a Tech Sales brochure on EDFs made by the Shur-Lock Corp. this may help you understand the design.

Thanks.

wajidshah · 05-04-2010, 03:25 AM

I have never come up against a "real" ITR, (i say "real" because you know ... Traction = go...as long as you have the power to drag your ass and not ... lbs. after a few simple bolt ons the clipse gsx would murder the type r. .... well whatever, iv heard quite a bit of people complaining about their ...

lfausty · lfausty's Garage

whats the application a expandable bolt is used for? and threaded at both ends? wouldnt just the head of nut squeeze the sides out. I dont know i just know that ive heard of this bolt (grass hopper age) and what it would do.

Maleficio · Maleficio's Garage

Quote:

Originally Posted by lfausty

whats the application a expandable bolt is used for? and threaded at both ends? wouldnt just the head of nut squeeze the sides out. I dont know i just know that ive heard of this bolt (grass hopper age) and what it would do.

The one Airframer that tried to explain it to me said it's used in spots on the plane where there's not enough clearance to torque both ends at the same time.