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Messages - WConley

Pages: 1 ... 80 81 [82]
1216
Non-FE Discussion Forum / Re: Air France crash
« on: May 28, 2011, 11:25:47 AM »
I'm an engineer with a background in aeronautical and control systems.  I too have been following this story closely!  :'(

As the systems become more complex, how do we ensure that a pilot has what he needs in an emergency?  I don't know...  Remember the Aeroperu 757 that crashed because maintenance had taped over the pitot-static ports?

http://www.airdisaster.com/cgi-bin/view_details.cgi?date=10021996&reg=N52AW&airline=Aeroperu

There are lots of big brains working on this problem, but I don't see how you can manage every failure mode on such a massive system.  Could a battery-powered GPS device be an effective last-ditch information source, as it was for Kerry?


1217
I'm keeping my fingers crossed!  I would love to see that Shelby whoopin' it up this year.

1218
FE Technical Forum / Re: Precision Oil Pumps rockers
« on: May 27, 2011, 09:30:14 PM »
Hi guys -

Nope, I didn't do an FEA study of these rockers.  I'd be curious to have a look at them though.  Did they break under the fulcrum or out towards the arm?

I'm just resurfacing after a trip to Europe (and then a flog to catch up on my work!)

- Bill

1219
Way to go Jay!   ;D  Glad you've hit that milestone.  That is one badazz poster.  Love the vintage look!

Gee, all I seem to get from my friends is calls when their stuff quits working. ;)

1220
Woot!  Looking good Jay.  That intake is going to be very cool.

Glad you're making progress on the car at the same time too.

I've finished my new spin test cell.  It's very stealthy:



Then you open the first door and things start to look unusual:



The second door reveals the insulated room:



Here's a better view inside the cell (with the machine fitted, before I put in the acoustical tile):



Now the acoustical tile and thick rubber floor are in:




I remembered your advice a while back about building test cells.  Well, I went one step further and independently framed the room slightly spaced away from the existing structure.  Everything is double insulated with thick foam - about 18 inches total with the independent double doors to seal it off. 

The results are amazing!  I ran the machine at 8,700 rpm and the noise reduction is about 35 dB.  You can hardly tell the machine is running when you're outside the building.  Inside, you can have a quiet normal conversation with only a dull drone to remind you of what's happening.

The machine looks big in there, but I'm redesigning the frame to be half its current size.  It will be designed to mount a block directly at about half the current height as well.  That will leave plenty of room to walk around in there with the machine.  Testing will be done with the operator outside the cell, with a webcam and controls outside to do everything.

1221
+1.  That B302 is the best street Mustang to come out since the original.  Maybe next year they'll offer a few different color schemes.  That would make me seriously commit to lobbying the wife and convincing the truck to develop expensive mechanical issues  ;)

1222
FE Technical Forum / Re: Bank to Bank Bore Spacing
« on: April 14, 2011, 05:52:34 PM »
Jay -

Per my copies of factory sideoiler block drawings (bought from Dave Shoe), the stagger distance from the left bank to right bank on the FE is 0.880 inch.

Hope this helps!

1223
Jay - you can put some pretty decent bends in those runners and not have major losses.  A dry intake runner is less sensitive than a primary header pipe.  I'm curious to see what you've come up with!

BTW - I'm putting the deposit on a new toy tomorrow.  Should have it in a couple of weeks!  It even has a fourth axis for when I get ambitious  ;D



Now I don't have to hate you so much LOL!

1224
Nice work Jay!  The car is really starting to shape up.   ;)

1225
FE Technical Forum / Re: My experiment "The Tractor Motor"
« on: March 28, 2011, 11:11:43 AM »
Carl Holbrook used to do the 8-sleeve route on many of his Cobra Jet race blocks - brand new from the factory!  He claimed that the centrifugally cast sleeves held their shape better and gave him less blowby under the stress of racing.

Like Jay mentioned, he used the thinner .090" sleeves in this case.  I think I recall Carl saying that he bored and sleeved every other hole first, then came back and did the rest.  As far as where to put the step in the block, I have always been taught that it's best to support the sleeve from the bottom.  The fire ring from the head gasket pushes down hard on the sleeve, and it is well supported by the main bulkhead structure down low.  The head bolts tie in to structure down by the bulkheads too, completing the loop.  Up top you only have the head deck, which is now disconnected from the bores.  Hopefully it will work well for you though!  We're all learning here.   ;)

1226
Looking good Jay!  Fiberglass is always a PITA, but I know you'll be able to massage those gaps in the end.  Microfiber filler is your friend!!

I'll be interested in your dyno results with the tight bend header primaries.  I would guess at least a 10 - 20 HP penalty there, but I've been wrong before!

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