Author Topic: Mid- Engine Modified Sports  (Read 784825 times)

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Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #375 on: July 31, 2013, 03:54:01 PM »
I removed a few more components this morning and weighed them:

Right 0.040” 2024-T3 aluminum heat shield plus two oil filters and Dzus fasteners= 5lbs

Left 0.040” 2024-T3 aluminum heat shield plus coolant reservoir and dry sump vent tank= 4lbs

Left side pod 0.078” 6061-T6 aluminum top panel plus two billet aluminum fire bottle mounting brackets= 6lbs

Patterson 3 gallon dry sump oil tank- empty- plus AN fittings= 7lbs

More parts coming off this afternoon.

Regards, Neil  Tucson, AZ
Regards, Neil  Tucson, AZ

Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #376 on: July 31, 2013, 06:32:21 PM »
Now I need to create an Excel file to keep track of how this is adding up.

Right side 0.078” 6061-T6 aluminum side pod cover plus a billet aluminum 10 lb fire bottle mounting bracket= 3lbs

10lb Fire Bottle= 12 lbs

5lb  Fire Bottle= 6lbs

10lb Automatic Extinguisher plus hose & nozzle= 14lbs

10lb Automatic Extinguisher plus hose & nozzle= 14lbs (yes—two)

10 gallon Fuel Safe fuel cell in an aluminum shoebox container- no gas, just foam baffle=15lbs

Rear anti-roll bar plus mounting brackets and bolts=4lbs

Fiberglass cockpit rear bulkhead, cut to clear roll cage, plus 0.060” 6061-T6 aluminum door jams= 9lbs

The pile of parts is starting to look like a car kit.

Regards, Neil  Tucson, AZ
Regards, Neil  Tucson, AZ

Offline Milwaukee Midget

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Re: Mid- Engine Modified Sports
« Reply #377 on: July 31, 2013, 07:38:51 PM »

The pile of parts is starting to look like a car kit.


Which would make it indistinguishable from a disassembled Jag . . .
"Problems are almost always a sign of progress."  Harold Bettes
Well, I guess we're making a LOT of progress . . .  :roll:

Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #378 on: July 31, 2013, 08:42:26 PM »
Left upper & lower doors spliced together with latch installed= 14 lbs
 
Right upper & lower doors spliced together with latch installed= 14 lbs
 
T-bar= 1lb
 
Regards, Neil Tucson, AZ
Regards, Neil  Tucson, AZ

Offline Milwaukee Midget

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Re: Mid- Engine Modified Sports
« Reply #379 on: July 31, 2013, 11:05:01 PM »
Taking the Colin Chapman approach, I see . . .

Or are we just bragging?  :roll:

By the time you throw a coat of paint on it, you're going to double the weight of the car.

 :wink:

:cheers:
"Problems are almost always a sign of progress."  Harold Bettes
Well, I guess we're making a LOT of progress . . .  :roll:

Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #380 on: July 31, 2013, 11:18:36 PM »
Unfortunately Chapman's cars (and Lolas) broke rather too frequently.  :-P

I'm up to a total of 468lbs but this does not include the front & rear fiberglass body sections, chassis & roll cage, engine, and Porsche G50 Transaxle, rear axles & CV joints, or rear suspension. It'll add up pretty quick!

Compared to your car, mine is a locomotive!

Regards, Neil  Tucson, AZ
Regards, Neil  Tucson, AZ

Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #381 on: August 03, 2013, 06:53:12 PM »
Left Rear Suspension with Porsche 996 upright & hub, Porsche 928S4 front rotor & caliper, Aldan coil-over, and Porsche 996 axle & CV joints=79lbs

Right Rear Suspension with Porsche 996 upright & hub, Porsche 928S4 front rotor & caliper, Aldan coil-over, and Porsche 996 axle & CV joints=79 lbs

This is more than I thought it would be but the big brake rotors and beefy axles contribute a lot of weight.

Regards, Neil  Tucson, AZ
Regards, Neil  Tucson, AZ

Offline Milwaukee Midget

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Re: Mid- Engine Modified Sports
« Reply #382 on: August 04, 2013, 01:43:30 AM »

This is more than I thought it would be but the big brake rotors and beefy axles contribute a lot of weight.

Regards, Neil  Tucson, AZ

It's probably STILL less unsprung weight than a Triumph IRS.  :-D
"Problems are almost always a sign of progress."  Harold Bettes
Well, I guess we're making a LOT of progress . . .  :roll:

Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #383 on: August 04, 2013, 12:26:54 PM »
Chris;

Wow-- the Triumph IRS must have been built in a boiler factory and designed in a blacksmith shop. Or is it the other way around?

Fortunately only half the weight of my axles, CV joints and suspension arms are unsprung. It's still a lot of weight, though.

Regards, Neil  Tucson, AZ
Regards, Neil  Tucson, AZ

Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #384 on: August 05, 2013, 06:37:27 PM »
I removed the Mirage rear body this afternoon and put it on the scale; it weighs 56 lbs including the two side latches. The front body, including the windshield, weighs 80 lbs. I have cut out the original dash in my Mirage front fiberglass but that would account for only about 2 lbs at most.

Now I need to put the two fiberglass side pod covers on to see how much they weigh.

Regards, Neil  Tucson, Az
Regards, Neil  Tucson, AZ

Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #385 on: August 05, 2013, 07:57:37 PM »
The Mirage fiberglass side pod covers weigh 15 lbs each. Now I know.

Regards, Neil  Tucson, AZ
Regards, Neil  Tucson, AZ

Offline Milwaukee Midget

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Re: Mid- Engine Modified Sports
« Reply #386 on: August 05, 2013, 08:21:42 PM »
I'm laughing my rear end off at this, but I admire you're determination and fortitude in documenting the weight of every single piece.

You clearly have a background in aviation.

"Problems are almost always a sign of progress."  Harold Bettes
Well, I guess we're making a LOT of progress . . .  :roll:

Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #387 on: August 18, 2013, 07:58:25 PM »
More trivia:

This afternoon I removed my exhaust headers and put them on the weight scale: each header weighs 17 lbs.

Regards, Neil  Tucson, AZ
Regards, Neil  Tucson, AZ

Offline robfrey

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Re: Mid- Engine Modified Sports
« Reply #388 on: August 18, 2013, 09:57:43 PM »
Do you have a target weight you are shooting for?
I can't wait to see this car!
What spring rates are you planning on using?
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Offline manta22

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Re: Mid- Engine Modified Sports
« Reply #389 on: August 18, 2013, 10:06:23 PM »
Do you have a target weight you are shooting for?
I can't wait to see this car!
What spring rates are you planning on using?

No, I don't have a target weight; it will be what it will be. I'm just interested in finding out what things weigh- I've never seen a car weight broken down into individual components before.
Right now I'm using 225lb/in springs on the front and 300lb/in on the rear with Aldan coil-overs. I may have to increase the spring rates depending on how much down force the body generates.

Regards, Neil  Tucson, AZ
Regards, Neil  Tucson, AZ