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10-24-07, 09:00 AM
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#1 (permalink)
| | albanygt40 3 Tenths 
Join Date: Nov 2005 Location: Albany West Aus GT40: Albany west Aus
Posts: 361
Rep Power: 6  |  Mechanical aptitude test time
Ok who thinks they are a Mechanical Guru????
Take the test and post your results.
I'll kick off with a dismal 86% ,darn pulleys get me every time. Ford Doctors Diesel Technician Society
Keep it honest as there will be checks 
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What! another DRB GT40... | 
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10-24-07, 09:50 AM
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#2 (permalink)
| | Jim C Gold Supporter
Join Date: Dec 2004 Location: SYDNEY, AUSTRAL GT40: RF 105
Posts: 521
Rep Power: 9 | Re: Mechanical aptitude test time
And how do you plan on checking David.
I will play your game.
88% no idea were I failed it doesnt tell you or does it.
I would say the block and tackles as it was a stab in the dark afair.
Then it turfed me out for being thick.
Last edited by Jim C; 10-24-07 at 09:55 AM.
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10-24-07, 09:58 AM
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#3 (permalink)
| | Scott Calabro Supporting Vendor 
Join Date: Oct 2006 Location: New England GT40: TS40 # 875
Posts: 814
Rep Power: 11 | Re: Mechanical aptitude test time
88% or 440 points.
It notified me only once to try a question again.
S | |
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10-24-07, 10:14 AM
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#4 (permalink)
| | delaneyp Peter D
Join Date: Sep 2001 Location: Sydney, Australia GT40: DRB #27
Posts: 1,230
Rep Power: 21 | Re: Mechanical aptitude test time
92% - trouble is, it doesn't tell you what you got wrong !
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DRB (GT40 Australia) #27
331 Windsor / GD-50
8-Stack EFI / Autronic
Dark Metallic Blue Pearl | |
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10-24-07, 10:39 AM
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#5 (permalink)
| | jcdean Rookie
Join Date: Jan 2007 Location: Oklahoma City, OK
Posts: 74
Rep Power: 2 | Re: Mechanical aptitude test time
86% 430 Points
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Joey | |
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10-24-07, 10:40 AM
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#6 (permalink)
| | danimal A Tenth
Join Date: Jul 2006 Location: Baltimore, MD, USA GT40: none yet... :(
Posts: 115
Rep Power: 4 | Re: Mechanical aptitude test time
78%  | |
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10-24-07, 10:48 AM
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#7 (permalink)
| | MN12 A Tenth
Join Date: Sep 2001 Location: Alpharetta, GA GT40: saving for RCR
Posts: 178
Rep Power: 9 | Re: Mechanical aptitude test time
450 90%
Cool test and yes it will tell you you need to clivk onthe icon in the upper left for review answers | |
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10-24-07, 11:59 AM
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#8 (permalink)
| | Martin Potts A Tenth 
Join Date: Jan 2007 Location: Hants, U.K GT40: MDA Mk1
Posts: 181
Rep Power: 3 |  Re: Mechanical aptitude test time
82% ...Just passed.. Does that mean I've just about got enough apptitude to build a GT40.. Only just though.. | |
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10-24-07, 01:15 PM
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#9 (permalink)
| | spud Rookie
Join Date: Mar 2005 Location: New York, USA GT40: Gardner Douglas T70
Posts: 54
Rep Power: 4 | Re: Mechanical aptitude test time
94%. Somehow that doesn't seem to make my build go any faster... | |
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10-24-07, 01:19 PM
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#10 (permalink)
| | Big-Foot Gold Supporter
Join Date: Jan 2007 Location: Minneapolis, MN GT40: Replica
Posts: 1,394
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94% here as well.. Darned block and tackle pulleys got me.. | |
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10-24-07, 03:46 PM
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#11 (permalink)
| | aero 3 Tenths
Join Date: Jul 2004 Location: Portland, OR - USA GT40: Currently designing scratch built mid engine sports car.
Posts: 300
Rep Power: 8 | Re: Mechanical aptitude test time
Whether or not you'll believe me, I got 100%.
There were three questions I wasn't sure about:
1) One of the electrical ones - the series - parallel one
2) Another electrical one - the first close the switch and how many lights come on
3) The one about air entering the cylinder only because of semantics. I stuck with the engineer's answer which is atmospheric pressure pushing the air in, but the answer above it (being pulled in by suction due to the piston moving down) is arguable also correct because atmospheric pressure wouldn't be able to push air in unless the pressure inside the cylinder drops. This happens, of course, due to the piston moving down and creating a "vacuum" (in gage pressure). I visualize things a lot and in this case it all depends upon which side of atmospheric pressure (above or below) your mind views this scenario from. The other possibility of creating the pressure difference to push air in is to increase the pressure on the outside of the cylinder. This is not what happens in this case, so one can think of it as "sucking" if one pleases.
Can you tell I'm at lunch right now???
Back to work....
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Currently designing a sports car:
Mid engine (what else is there?)
Audi 3.6 V8. (ok, there are others)
40" high (what else is there?) | |
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10-24-07, 04:47 PM
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#12 (permalink)
| | jac mac 10 tenths 
Join Date: Dec 2005 Location: Gore N.Z.
Posts: 1,556
Rep Power: 20 |  Re: Mechanical aptitude test time
92%, but too dumb to work out how to check where I went wrong! & too scared to do it all again in case I get a lower score! 
Tell you what though, after pulling some trees down with a 20t digger/Block & Tackle/wire rope this past winter I have a heightened appreciation for the risks associated with using that stuff in the WRONG manner !
Jac Mac | |
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10-24-07, 05:15 PM
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#13 (permalink)
| | jerry A Tenth
Join Date: Jan 2004 Location: Someret,England GT40: Roaring Forties
Posts: 124
Rep Power: 6 | Re: Mechanical aptitude test time
Hi,
94% for me and no idea which was wrong...
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RF#99
Freestyle Buggy
Brat | |
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10-24-07, 05:27 PM
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#14 (permalink)
| | Jimmy M Rookie
Join Date: Feb 2005 Location: Christchurch NZ GT40: DRB #62
Posts: 14
Rep Power: 4 | Re: Mechanical aptitude test time
92%, calculating block and tackle ratio's was sooo long ago.......
It would be good to find out just where we all went wrong though. | |
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10-24-07, 06:31 PM
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#15 (permalink)
| | ben s Rookie
Join Date: Jan 2005 Location: Devon, U.K. GT40: scaletrix x2!!
Posts: 33
Rep Power: 4 | Re: Mechanical aptitude test time
I found this on one forum and then posted it on another.
Oh and I got 90% 450 points, PASS. woohoo!
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Still learnin' ! | |
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10-24-07, 09:25 PM
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#16 (permalink)
| | wbmusarra 10 tenths
Join Date: Oct 2001 Location: Snellville, Ga. GT40: DRB#5
Posts: 1,146
Rep Power: 19 | Re: Mechanical aptitude test time
84%,
It only asked me to repeat one, but I knew I missed one other when it asked the same question, but in a different way.
Bill
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DRB#5
351W/408 DIS TWM F. I. 930 Porsche LSD | |
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10-24-07, 10:20 PM
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#17 (permalink)
| | VintageVenom 6 Tenths
Join Date: Oct 2005 Location: Michigan, USA GT40: RCR-40
Posts: 649
Rep Power: 12 | Re: Mechanical aptitude test time
89 / 430 points
Blew a couple that when I went back to I said "Doh", like the fans, and reciprocating to rotary, and those darn block and tackles will get me every time.
However, I believe questions 48 is incorrect (vacuum draws in the fuel mixture, not atmospheric pressure)
FYI... you can view your results by clicking the magnifying glass. | |
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10-25-07, 12:08 AM
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#18 (permalink)
| | Jim C Gold Supporter
Join Date: Dec 2004 Location: SYDNEY, AUSTRAL GT40: RF 105
Posts: 521
Rep Power: 9 | Re: Mechanical aptitude test time
Rob
I could be wrong
I think? the veiw is ATMO is the bench mark.
The piston is generating a negative pressure.
The outside air rushes in to equalize it back to ATMO.
Other than a few members I think we need to go back to block and tackle school.
What got me was I would have thought the wheel sizes would play a part in calcs but there are no diamensions?.
Jim | |
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10-25-07, 05:26 AM
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#19 (permalink)
| | Tom Hudson Rookie
Join Date: Apr 2005 Location: Essex England GT40: kva C type
Posts: 24
Rep Power: 4 | Re: Mechanical aptitude test time
92%
I much prefer this sort of mental exercise to ones like Soduku (spelling?)
The wording of some of the questions was unclear e.g. when direction of rotation is asked it will depend from which side it is being observed.
Tom | |
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10-25-07, 05:47 AM
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#20 (permalink)
| | jac mac 10 tenths
Join Date: Dec 2005 Location: Gore N.Z.
Posts: 1,556
Rep Power: 20 | Re: Mechanical aptitude test time
Quote:
Originally Posted by VintageVenom  89 / 430 points
Blew a couple that when I went back to I said "Doh", like the fans, and reciprocating to rotary, and those darn block and tackles will get me every time.
However, I believe questions 48 is incorrect (vacuum draws in the fuel mixture, not atmospheric pressure)
FYI... you can view your results by clicking the magnifying glass. | Rob, The piston is not really creating a vacuum or lower pressure ( It could only do that if both valves were shut ). As the intake valve is open the whole time the piston is moving down all that is being created is a space for the atmospheric pressure to flow into.
Tom , I believe that I might have answered that rotation one with Crown & Bevel ( Ring & Pinion) incorrectly also as I assumed that I was to look at the rotation of the pinion from the end viewed ,whereas in the automotive diff pinion sense we would assume that we would view from the yoke end of the pinion.
Jac Mac
Last edited by jac mac; 10-25-07 at 05:54 AM.
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