For those of you running quicktimes.............

[Jerry Clayton]

Got the pics taken, now got to download them, resize them and get them posted

Well I got them loaded into my gallery but couldn't get them here--they are IMG 0122thru 0137

I thought i hade description with them but can't get it now--they may be there so if one of the Mods can help I would appreciate it.

Jerry

[Jerry Clayton]

:OK---you can just click on the camera image below my name which will take you to my gaqlery where the pics are located and they are at the first 14 pics-- You are quite welcome to look at the others in the gallery to see some of my back ground qualifications in this area!!!!!

[Jerry Clayton]

[img]img_0122_640x427_[/img]

[Jerry Clayton]

This is a Lakewood block plate for a Ford big block--notice the number of bolt holes around the outer edge and also the 3 holes for air and the starter pocket ring.

[Jerry Clayton]

This is the block plate for a Chev--notice the same setup as for extra bolts as the Ford. It is also laying in place on the Lakewood

[Jerry Clayton]

Here you can see how the bottom was allowed to be trimmed for ground clearance and also the clutch crossshaft and throwout bearing

[Jerry Clayton]

Here you can see just how much was trimmed and the 2 holes that were drilled for extra bolts to fit the minimun spread measurement

[Jerry Clayton]

This is the SFI 6.2 sticker that was issued AFTER the mods were done!! you can also see the cover for the hole to adjust/change clutch weights/arms/levers

[Jerry Clayton]

This is a rear view of a Kieth Black Hemi that shows the extra bolt holes for fastening the scattershield

[Jerry Clayton]

This is a pic of the 1/4 inch 7075 t6 alum blockplate required between the engine and scattershield--visable are the 2 holes allowed for venting

the 2 little holes are for the alignment dowels in the block.

[Jerry Clayton]

This is the alloy grade marking that can't be removed ---7075 t6

[Jerry Clayton]

this is the thickness marking that can't be removed .250 supplier Kaiser

[Jerry Clayton]

And this was totally destroyed 9-11-2001 in a test of the design used in the World Trade Center Twin Towers

N612UA Flew it many times and several countries

[LRRCobradreamer]

D-Cel you asked:

"What is your position on the net affect of the significantly higher tensile strength/lower ductility of the QT housing?
My belief is that it is more resistant to deformation and therefore transfers a larger portion of the total energy into the block mounting points."

My reply:
The short answer is no. The best material selection would be high strength and high ductility. That is one reason why the block bolts material failed in the photos, i.e. low ductility of cast iron. The reason is you want the material to absorb the most energy. Think of it as similar to the crush zone in our modern cars, absorbing the energy of a crash in the least distance.

If I were to design a bell housing, my goal would be to contain all parts within the bell housing. However that may mean the supports, if cast iron, may fail. As long as the casting and the bolts do not become projectiles then that would be acceptable. Holes in walls or injury to people are not acceptable.

I am reminded of an old saying about design. The main issues are to design for performance, reliability and cost. If you only concentrate on two of the three, then it is like designing a three legged stool with two legs. It does not work. I say this because the above are very simplest points to designing a bell housing, many many more issues have to be determined and the company must make money to stay in business also.

D-Cel, that is a good question and thanks for the chance to reply. I hope this helps explain the reasoning why hi strength and ductility are the better material for this application.

Note, where I work we must do containment analysis in case our rotors fail. Think of a 78 lb rotor at 16000 rpm and what could happen.

Jerry, no problem. I did not see anything you said that could possibly bother me. I will not likely be there Thursday, but am going to car show Sunday and likely the one on May 15. Hope to see you soon. Oh yeah, I know that airplane and am very familar with some of the parts, like the IDG.

Lee

[Jerry Clayton]

Up kinda late Lee??