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mcarter
podders Helping podders - pHp
Joined: 07 Apr 2016
Location: Greenbrier, TN
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Posts: 3419
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Topic: tongue weight Posted: 22 Feb 2017 at 5:43pm |
I tried it, it works, somebody's darn theorem. Love to post a photo but we know how that goes, I put my generator on the A frame mount a couple of days ago so I need to do again, BTW I used 1 1/2 pipe to be compatible with 2X4.
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Mike Carter
2015 178
" I had the right to remain silent, I just didn't have the ability."
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jato
Senior Member
Joined: 23 Feb 2012
Location: Kewadin, MI
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Posts: 3329
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Posted: 22 Feb 2017 at 8:58pm |
mcarter, you must be an engineer!
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God's pod
'11 model 177
'17 Ford F-150 4WD 3.5 Ecoboost
Jim and Diane by beautiful Torch Lake
"...and you will know the Truth and the Truth will set you free."
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Happy Tripping
Senior Member
Joined: 27 May 2014
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Posts: 473
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Posted: 23 Feb 2017 at 7:35am |
This is very nice. I assume the brick is so that it's reasonably level with the bathroom scale, but why not use a foot-long 2X2 or 2X4 rather than a pipe?
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mcarter
podders Helping podders - pHp
Joined: 07 Apr 2016
Location: Greenbrier, TN
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Posts: 3419
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Posted: 23 Feb 2017 at 10:19am |
Good question, my only guess is the pipe distributes weight more exactly that the wider 2X4 would and has more strength than a 2X2.
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Mike Carter
2015 178
" I had the right to remain silent, I just didn't have the ability."
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CharlieM
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Joined: 23 Nov 2012
Location: N. Colorado
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Posted: 23 Feb 2017 at 12:11pm |
The idea of the pipe is to provide a sharp edge so you know exactly where contact is made. You can get the same effect by slicing a 6" length of 2x2 lengthwise at a 45 degree angle yielding two 6" lengths with triangular cross sections. Place one each on the scale and brick with the wide sides down so you have two edges pointing up. That provides very accurate points to measure your 1 and 2 feet. A bit more trouble but it eliminates the rolling pipe problem.
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Charlie
Northern Colorado
OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD
PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD
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mcarter
podders Helping podders - pHp
Joined: 07 Apr 2016
Location: Greenbrier, TN
Online Status: Offline
Posts: 3419
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Posted: 23 Feb 2017 at 2:11pm |
Thanks Charlie, makes sense.
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Mike Carter
2015 178
" I had the right to remain silent, I just didn't have the ability."
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TheBum
Senior Member
Joined: 26 Feb 2016
Location: Texas
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Posts: 1407
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Posted: 23 Feb 2017 at 4:22pm |
Would steel angle iron work as well, or is the Pod too heavy?
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mcarter
podders Helping podders - pHp
Joined: 07 Apr 2016
Location: Greenbrier, TN
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Posts: 3419
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Posted: 23 Feb 2017 at 4:50pm |
Bum,
I think yes, I used pipe because I had pipe, I think Charlie has a good point but I didn't want to "cut wood". I used what I had. The process is the same and allows you to use a bathroom scale. You can't put some wimpy angle iron under it, but that's common sense and we have that. I like pipe because it has many uses, wood seems to have one purpose once it's cut. To me.
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Mike Carter
2015 178
" I had the right to remain silent, I just didn't have the ability."
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TheBum
Senior Member
Joined: 26 Feb 2016
Location: Texas
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Posts: 1407
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Posted: 23 Feb 2017 at 5:56pm |
I think the theory is based on torque. With the brick defined as the pivot point, the torque of the system would be the weight of the tongue (W lbs) times the distance from the tongue weight to the brick, or W ft-lbs. The torque along all points of the 2x4 must be the same, so at triple the distance, the weight to get the same torque would be 1/3 W.
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mcarter
podders Helping podders - pHp
Joined: 07 Apr 2016
Location: Greenbrier, TN
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Posts: 3419
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Posted: 23 Feb 2017 at 6:33pm |
I agree Bum, doesn't appear I am the only engineer on this forum:)
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Mike Carter
2015 178
" I had the right to remain silent, I just didn't have the ability."
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