Clutch Fork Failure Analysis Prediction?

[cvette98pacecar]

Originally Posted by nelson007

Hello Jim,
Could heat have any effect on the part to cause it to break ?

Nelson007

Heat could effect the tensile strength, However where the stress fracture is I highly doubt that portion of the fork got that hot.

I am sure glad it did not break when I was driving her. Although Dave and I were driving extremely slow and careful.

[scottfab]

seems to me some weld beads along the indicated lines for strength could be a preemptive counter measure. (both top and bottom side)

[secondchance]

I am going to say nothing silly and wait for Dr. Phil to chime in. Also, Dave Bright's opinion would be interesting. Does Dave come on the forum?

[QB93Z]

Originally Posted by nelson007

Hello Jim,
Could heat have any effect on the part to cause it to break ?

Nelson007

I was referring to heat treatment of forged metal parts. The temperatures involved would be in the 1000 to 1500 degree range. The temperatures involved in normal operation are no where near that.

Jim

[scottfab]

Originally Posted by secondchance

Big feet?! I wear 8-1/2!

For it to be worthwhile reinforcing has to be on the open end on the break and around the begining of the crack - around the rivet. I don't know such small weld is doable. Maybe a plate with a hole for the rivet and weld over the hole/rivet and around the edge of the plate. A few holes on the plate filled with weld will be worthwhile. Again this is such a small area to work with... Not to mention clearance concern after adding the plate.

I'm not a welding expert (have welder will make a mess) but have seen skilled welders lay down a bead of high strength steel (E1203X) that is low profile. (profile set by the welder). Such steel is MUCH stronger than the original steel. (120,000 psi).
Not sure this idea would work on a broken fork though. I'd have to be a preemptive move.

Anyone know a source for replacement forks?
This is a part I want to have on hand AND have it strengthened before installation.

[Schrade]

Kind of confused here about 'welding' / 'preventative' measures...

OP asked about Failure Analysis Prediction, and I think the discussion would have ended when someone mentioned Magnaflux (besides visual inspection)...

[efnfast]

Is this part NLA?????

[secondchance]

Originally Posted by efnfast

Is this part NLA?????

You can still find them.

[scottfab]

Originally Posted by secondchance

You can still find them.

Maybe Bill B. ?
Or where ?

[cvette98pacecar]

Originally Posted by scottfab

Maybe Bill B. ?
Or where ?

http://www.powertorquesystems.com/Co...CorvetteCF.htm