Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > iRV2.com General Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 07-28-2011, 11:28 PM   #1
Member
 
Join Date: Jun 2011
Location: wpbfl
Posts: 72
diy mh scales? Could this be done?

Sure, you can run to the local scales, but what if you want to have the ability of weighing the mh at home? oh yes, and don't have a lot of $$$ to spend on a commercial scale.

Well, 1st, how much does an axle weigh, say on my 31 ft '88 allegro? Next, what's the biggest weighing error that would be acceptable?

Now, what if I used some hd galvanized electrical pipe (or something strong enough) about 10 ft long as a fulcrum, and put the balance point about 6" from the axle. I'd have 20:1 leverage advantage. Per 1000# of axle weight, I'd have to push down 1/20th of 1000 or 50#, to get balance.

For the measure weights I'd hang a platform on the free end and fill it with cinder blocks. At 42.5 lbs each, maybe I'd need 10. Total cost might be about 50.00 for the project.

Is this even feasible?
__________________

__________________
allegroman is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-28-2011, 11:49 PM   #2
Community Administrator
 
JohnRR's Avatar


 
Fleetwood Owners Club
Workhorse Chassis Owner
Join Date: Sep 2010
Location: Marquette, Michigan "Da UP"
Posts: 16,943
Quote:
Originally Posted by allegroman View Post
Sure, you can run to the local scales, but what if you want to have the ability of weighing the mh at home? oh yes, and don't have a lot of $$$ to spend on a commercial scale.

Total cost might be about 50.00 for the project.

Is this even feasible?
How much are you thinking it costs to weigh at a commercial scale? To the best of my knowledge most local trash transfer stations will allow you to weigh for free.
__________________

__________________
John & Cathy R.
06 Pace Arrow 38L W24
08 14 Lincoln MKX AWD
See My RV Upgrades
JohnRR is offline   Reply With Quote
Old 07-29-2011, 12:09 AM   #3
Junior Member
 
xfirechief20's Avatar
 
Monaco Owners Club
Retired Fire Service RVer's
Join Date: Feb 2011
Location: Thompson Falls, Montana
Posts: 25
DUDE you have way too much time on your hands
__________________
xfirechief20 is offline   Reply With Quote
Old 07-29-2011, 12:15 AM   #4
Member
 
Join Date: Jun 2011
Location: wpbfl
Posts: 72
"How much are you thinking it costs to weigh at a commercial scale? To the best of my knowledge most local trash transfer stations will allow you to weigh for free. "

It's not the price, and my situation is likely unlike most other folks. It's about convenience and control. At near 4.00/gallon for gas, I'm not running out multiple trips 50 or 75 miles each to see what my rig weighs dry and wet, no matter how cheap a weigh is. My monthly run consists of driving in the opposite direction of town, the whole of 6 miles, into the wilderness (64000 ac at the end of my street!), two or three times a month. But one day I'll head out for 'real' and I want to be prepared now, for the trip. 'sall.
__________________
allegroman is offline   Reply With Quote
Old 07-29-2011, 12:18 AM   #5
Member
 
Join Date: Jun 2011
Location: wpbfl
Posts: 72
"DUDE you have way too much time on your hands "
I'm sure you aren't busy 24/7 either. What sort of things do YOU do for fun and relaxing?
Me, I think up stuff, mostly to keep my mind active by solving problems. They say it keeps the alztimers at bay. Not sure yet....
__________________
allegroman is offline   Reply With Quote
Old 07-29-2011, 02:37 AM   #6
Senior Member
 
Kurmudgeon's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Holiday Rambler Owners Club
Join Date: Mar 2008
Location: Klamath County, Oregon
Posts: 245
What you want to do is pretty easy, and won't require any cinder blocks. First, I think you have fulcrum and lever confused. You certainly don't need a 10 foot long fulcrum, and you will need a lever much stronger than pipe or conduit. I would use a short piece of heavy angle iron as the fulcrum on one end, a bathroom scale on the other end, and a 12 or 16 foot 4x4 or 4x6 as the lever. Your load will go between the fulcrum and scale. Use a hydraulic jack centered on a precise load point somewhere near the fulcrum, say 6" or 8". Lift the load off the ground with the jack, read the weigth on the scale, and multiply. If your jack is at 8" on a 16 foot lever the factor will be 24, at 6" will be 32. To weigh something really heavy, get a longer lever.

It may sound crude, but if you measure and design carefully, it will be surprisingly accurate, and it's simple and cheap.
__________________
Jim Price
curmudgeon: noun; a crusty, ill-tempered, irascible, cantankerous old person . . . .
79 27' Holiday Rambler Statesman, 78 32' HR Imperial, 85 36' HR Imperial 5th Wheel
Kurmudgeon is offline   Reply With Quote
Old 07-29-2011, 02:53 PM   #7
Senior Member
 
Alan_Hepburn's Avatar
 
Fleetwood Owners Club
Workhorse Chassis Owner
Join Date: Feb 2000
Location: San Jose, Ca, USA
Posts: 1,045
Quote:
Originally Posted by Kurmudgeon View Post
What you want to do is pretty easy, and won't require any cinder blocks. First, I think you have fulcrum and lever confused. You certainly don't need a 10 foot long fulcrum, and you will need a lever much stronger than pipe or conduit. I would use a short piece of heavy angle iron as the fulcrum on one end, a bathroom scale on the other end, and a 12 or 16 foot 4x4 or 4x6 as the lever. Your load will go between the fulcrum and scale. Use a hydraulic jack centered on a precise load point somewhere near the fulcrum, say 6" or 8". Lift the load off the ground with the jack, read the weigth on the scale, and multiply. If your jack is at 8" on a 16 foot lever the factor will be 24, at 6" will be 32. To weigh something really heavy, get a longer lever.

It may sound crude, but if you measure and design carefully, it will be surprisingly accurate, and it's simple and cheap.
The basic theory here is valid, but you don't want to use a 4X4 or even e 4X6 as the lever - it will flex and the end result will be innacurate. The lever needs to be rigid so that ALL the force is transferred to the scale...
__________________
Alan Hepburn - San Jose, Ca
2007 Bounder 35E being pushed by a 2008 smart fortwo Passion
Good Sam Member #566004 * FMCA Member #F431612
Alan_Hepburn is offline   Reply With Quote
Old 07-29-2011, 03:00 PM   #8
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 22,825
Find out where the "Diesel Smokies" (Motor Carrier officers or Weighmasters) go for coffee.. Make friends.. They have portable scales.
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 07-29-2011, 03:43 PM   #9
Senior Member
 
Kurmudgeon's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Holiday Rambler Owners Club
Join Date: Mar 2008
Location: Klamath County, Oregon
Posts: 245
Quote:
Originally Posted by Alan_Hepburn View Post
The basic theory here is valid, but you don't want to use a 4X4 or even e 4X6 as the lever - it will flex and the end result will be innacurate. The lever needs to be rigid so that ALL the force is transferred to the scale...
Someone has given you bad information. It can flex from now 'til next week and it will make no difference as long as your only points of contact are the fulcrum and the scale. Flexing won't magically make weight disappear into thin air. If the lever flexes so much that some part of it touches the ground, either raise it higher or get a stronger fulcrum. But for the weights we're talking about here, and only 6-8" from the fulcrum, a 4x6 should be more than strong enough.

JP
__________________
Jim Price
curmudgeon: noun; a crusty, ill-tempered, irascible, cantankerous old person . . . .
79 27' Holiday Rambler Statesman, 78 32' HR Imperial, 85 36' HR Imperial 5th Wheel
Kurmudgeon is offline   Reply With Quote
Old 07-29-2011, 03:54 PM   #10
Senior Member
 
mikron's Avatar
 
Thor Owners Club
Ford Super Duty Owner
Join Date: Aug 2010
Posts: 860
Pilot $9.50 gives you front and rear seperate weight.
__________________
Mike, Janet & Duchess (cavalier King Charles)
2008 35B windsport, Brazel's rear TracBar, Koni shocks & Safe T plus steering
mikron is offline   Reply With Quote
Old 07-29-2011, 05:01 PM   #11
RV Mutant #14
 
Wayne M's Avatar


 
Winnebago Owners Club
Texas Boomers Club
Freightliner Owners Club
iRV2 No Limits Club
Join Date: Aug 2008
Location: Texas
Posts: 12,203
Ya'll are just to darn smart. I got my MH weighed and the front axle is 9400 pounds. Now I have to figure out what that means on each wheel.

Sheeeesssshhhh!
__________________
Wayne MSGT USMC (Ret) & Earlene (CinCHouse)
2015 Winnebago Tour 42QD
RVM14
It is what it is, and then it is what you make of it.
Wayne M is offline   Reply With Quote
Old 07-29-2011, 08:03 PM   #12
Senior Member
 
Freebird23's Avatar
 
Monaco Owners Club
Appalachian Campers
Join Date: Dec 2008
Location: Statesville, NC
Posts: 240
Yes,you have it about right.Back in the day we use to weigh out our old race cars like that at the track.We took a 3 in sq tube for a stand and a 11/2 sq tube arm.We made it at 10 to 1. you just had to adjest so you got tire off ground ,with arm being level. I got that old thing out in about 1990 after we had good dig. scales and it was very close. That said me thinks I would go to the Cat Scale.
Good topic ----lUCK---Bill
__________________
HR--Neptune---Chev Tracker--Toad
Freebird23 is offline   Reply With Quote
Old 07-29-2011, 10:26 PM   #13
Senior Member
 
Kurmudgeon's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Holiday Rambler Owners Club
Join Date: Mar 2008
Location: Klamath County, Oregon
Posts: 245
Quote:
Originally Posted by Freebird23 View Post
Yes,you have it about right.Back in the day we use . . . and it was very close. That said me thinks I would go to the Cat Scale.
That would be my choice too, but that's not what this thread is about. The OP wants to do it himself, and he's basically asking how.

JP
__________________
Jim Price
curmudgeon: noun; a crusty, ill-tempered, irascible, cantankerous old person . . . .
79 27' Holiday Rambler Statesman, 78 32' HR Imperial, 85 36' HR Imperial 5th Wheel
Kurmudgeon is offline   Reply With Quote
Old 07-29-2011, 11:27 PM   #14
Senior Member
 
njs42's Avatar
 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Apr 2011
Location: Federal Way, Wa.
Posts: 2,901
So the OP has time in his day
And he comes up with a way to weigh
He wants to know what we would say
If this make sense or we say nay
As for me I'm troubled by
This plan he has but can't think why
So forge ahead at least I say
It seems you have found a clever ------ weigh
__________________

__________________
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)
njs42 is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Scales for four corner weighing A6IntruderBN Class A Motorhome Discussions 19 07-21-2015 08:47 PM
Using the truck scales cliff841 MH-General Discussions & Problems 20 05-12-2011 10:39 PM
Blue Ox Base plate BX2160 DIY installation review 2005 Explorer V6 XLT 4WD jhanan Toads and Motorhome Related Towing 16 06-02-2008 08:32 PM
WHSC, RV Dealer or DIY Oemtech Workhorse and Chevrolet Chassis Motorhome Forum 32 07-08-2007 07:45 PM
Fat boy is going back to the scales tomorrow jab3143 Toy Haulers Discussion 4 10-08-2005 11:05 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:48 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.