Jayco RV Owners Forum

Thread Tools Display Modes
Old 03-22-2014, 09:20 AM   #1
Senior Member
mcfarmall's Avatar
Join Date: Jun 2011
Location: Kalamazoo, West Michigan
Posts: 1,814
Sherline tongue scale

I was looking at these on Amazon....kind of pricey for a unitasker. Why couldn't a clever fellow make one of these in the shop, do the math and accomplish the same result? I'm thinking about finding a pancake cylinder in the scrap pile, measuring the piston diameter, fill with oil and install a pressure gauge.

So if my cylinder has a 3" piston then the area would be 0.7854 d squared=7.0686 square inches. If my tongue weight is 500lbs then the gauge would read 70.735364 psi.

This will be my next G-job! We have a 5S event coming up which means brand new goodies going in the trash!! Should be a fun project.

2006 23B Hybrid with 10k round bar WDH
2011 F150 4x4 SCREW Ecoboost, Max Tow, Integrated TBC, 3.73 LS axle, Firestone Ride Rite airbags.
mcfarmall is offline   Reply With Quote
Old 03-22-2014, 09:42 AM   #2
Moderator Emeritus
Rustic Eagle's Avatar
Join Date: Apr 2011
Location: Michigan
Posts: 7,371
Post results with pics. A tongue scale a useful device..., use my Sherline often.



2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (integrated sway control)
Rustic Eagle is offline   Reply With Quote
Old 03-23-2014, 11:11 AM   #3
Senior Member
Join Date: Sep 2013
Location: Jersey
Posts: 296
I too have a Sherline. Makes me comfortable when I hitch up knowing exactly what % tongue weight I'm working with.
s1njin is offline   Reply With Quote
Old 03-23-2014, 01:42 PM   #4
Senior Member
Threebutchers's Avatar
Join Date: Mar 2013
Location: Planet Earth
Posts: 6,818
To know is better than to guess.
Threebutchers is offline   Reply With Quote
Old 03-23-2014, 05:28 PM   #5
Senior Member
Join Date: Jun 2013
Location: North Central Louisiana
Posts: 111
Bathroom scale is cheaper: http://hildstrom.com/projects/tonguescale/index.html
Mike Laupp

'13 Jayco Premier 351RLTS

'17 F350 King Ranch Ultimate FX4 6.7L TD SRW LB BackFlip F1
mjlaupp is offline   Reply With Quote

Thread Tools
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

» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 02:05 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.