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sandy in BC Board Sponsor & SL6 Racer

Joined: 08 Nov 2002 Posts: 3589 Location: Burton BC canada
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Post subject:
How do I weigh a race car?
(Mon Jul 26, 2010 6:51 am)
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No scales nearby.
How do I weigh my race car?
Id like to use a torque wrench to weigh all 4 corners.
Any ideas? |
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Dart270 Board Sponsor & Moderator

Joined: 21 Oct 2002 Posts: 6415 Location: Blacksburg, VA
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Post subject:
(Mon Jul 26, 2010 10:22 am)
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I have heard of using bathroom scales with fulcrums to decrease the load on the scale by a known amount. You would have to use a known weight to calibrate it well. I would think a torque wrench might not be as accurate.
Bring it down to my garage and we can corner weight it...
Lou_________________ The Road Goblin  |
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sandy in BC Board Sponsor & SL6 Racer

Joined: 08 Nov 2002 Posts: 3589 Location: Burton BC canada
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Post subject:
(Mon Jul 26, 2010 1:26 pm)
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so.......if the anticipated weight per corner was 700lbs......
I use an eightfoot 4x4 with the fulcrum at 1 ft from the end resting on the bathroom scale. I push 100lbs to lift the corner.......
Are you allowed open pipes and cut tires on your street? |
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sandy in BC Board Sponsor & SL6 Racer

Joined: 08 Nov 2002 Posts: 3589 Location: Burton BC canada
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Post subject:
Its easier than that!
(Mon Jul 26, 2010 2:01 pm)
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so I took my Big Bar......1" drill rod 50" long.
......tossed a block under the car and started prying.
Once I had the car lifted with the bar I measured from axle centre to fulcrum (6") and from fulcrum to the end where my knee was exerting all my 160lbs (42")
so if 6" = 1 then 42= 7 ....so 7x 160lbs = 1120lbs on the front
The same procedure got me about 1250lbs on the rear
That means about 2370 for the whole car. A lil less than I had figgerd....
I used the bathroom scale to weigh myself ..........Im so dirty I weigh 5 lbs more than I do after my bath! |
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Dart270 Board Sponsor & Moderator

Joined: 21 Oct 2002 Posts: 6415 Location: Blacksburg, VA
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Post subject:
(Mon Jul 26, 2010 2:14 pm)
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Sounds like a good first pass. Interested to see what happens if you do it on a different day with fresh setup.
Open pipes, yes, but limited. Cut tires should be fine, but I'll have to ask the neighbors...
Goin' back to Hagerstown this weekend - will miss ya there!
Lou_________________ The Road Goblin  |
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slantzilla Board Sponsor & Moderator

Joined: 17 Oct 2002 Posts: 6701 Location: Park Forest, Illinoisy
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Post subject:
(Mon Jul 26, 2010 4:08 pm)
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Bring it down to my shop. Patrick has a set of corner scales we can put it on.
Open pipes, cut tires, mud dragger..........they'd prolly let you be mayor for the day. 
_________________ "SSCTTFMF!!!!!"
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sandy in BC Board Sponsor & SL6 Racer

Joined: 08 Nov 2002 Posts: 3589 Location: Burton BC canada
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Post subject:
(Mon Jul 26, 2010 5:28 pm)
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| Quote: | | they'd prolly let you be mayor for the day. |
///////////same thing gets me "A$$h0le of the day" here/////////////// |
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emsvitil Supercharged
Joined: 12 May 2005 Posts: 3685 Location: So California
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Post subject:
(Mon Jul 26, 2010 5:31 pm)
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Take it apart and weigh the pieces................
 _________________ Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes
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Dart270 Board Sponsor & Moderator

Joined: 21 Oct 2002 Posts: 6415 Location: Blacksburg, VA
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Post subject:
(Tue Jul 27, 2010 5:51 am)
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Ooo, Ed I like that... I've done it before too, for most of the parts.
Lou_________________ The Road Goblin  |
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plymouth6 3 Deuce Webber

Joined: 02 Aug 2009 Posts: 87 Location: Spokane Washington
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Post subject:
(Tue Jul 27, 2010 1:46 pm)
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| They do not have dumps in Canada?
_________________ Raymond Flynn
1964 Plymouth Valiant V 200
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sandy in BC Board Sponsor & SL6 Racer

Joined: 08 Nov 2002 Posts: 3589 Location: Burton BC canada
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Post subject:
(Tue Jul 27, 2010 2:02 pm)
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The closest dump that weighs stuff is 2.5 hours and a ferry ride away.
There are log dumps that weigh full logging trucks 45 mins and a ferry ride away.....but they weigh 40,000 to 100,000lbs.
Weighing all the parts doesn t help with front/rear distribution...... |
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