Go Back   iRV2 Forums > MOTORHOME FORUMS > Class C Motorhome Discussions
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 08-21-2013, 06:52 AM   #1
Junior Member
Join Date: Jul 2013
Location: Longmont
Posts: 16
Motorcycle lift design and control

I need to get my 500lb scooter to my campsite using my 1989 Class c 27 foot HR Aluma-lite with a tag axel.

What do you think about a lift on the rear to carry the bike? I could easily design and attach and build this system. But I am a Mechanical Engineer with fabrication skills not an automobile engineer.

But i am worried about reducing the weight on the front end of the coach.

Attached Thumbnails
Click image for larger version

Name:	EBY_4379.jpg
Views:	39
Size:	342.8 KB
ID:	44533   Click image for larger version

Name:	EBY_4440.jpg
Views:	40
Size:	267.8 KB
ID:	44534  


onevw 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 08-21-2013, 07:32 AM   #2
Senior Member
Triker56's Avatar
Fleetwood Owners Club
Join Date: Jun 2009
Posts: 3,699
You are probably already at the rear GAWR limit. A good reason it has a tag.

For Rear Lifts have your front & rear axle weighted when loaded for travel. Then you can add on the extra weight of a lift by below.

Measure the distance from the center of rear axle to the center of the weight(Lift)
Divide that number by the RV’s wheelbase.
Multiply the result by 100 to get percent.
That percent of the load is added to the load and becomes the total load added to the rear axle.
That percent of the load is subtracted from the front axle weight and unloads the front axle by that amount.

800 lb bike, Lift 100 lb=900 lb
Center axle to rear 120” wheelbase 240”
120 divide by 240=0.50 X 100= 50%
Weight is 1350 lb added to rear axle
Front axle will be 450 lbs lighter

99 Discovery 34Q ISB
2014 MKS AWD EcoBoost Toad
Fulltime Since "99"
Triker56 is offline   Reply With Quote
Old 08-21-2013, 09:11 AM   #3
Join Date: Sep 2012
Posts: 66
The lift makers say their lifts are for full frame Class A chassis..........three reasons:

Rear axle weight limits
Added weight in the rear makes front light causing poor handling of already poor handling chassis.
Rear frame structure on class C is usually and add on extension some not strong enough to carry the load.

SOLUTION: Small trailer
2008 Sprinter chassis with
2010 Four Winds House class C
Pulling a 6x12 enclosed trailer
Showkey is offline   Reply With Quote
Old 08-21-2013, 07:28 PM   #4
Junior Member
Join Date: Jul 2013
Location: Longmont
Posts: 16
OK I am seeing the loads placed on the motorhome could cause negative effects on the system.

What do you think about those one wheel 4 by 8 trailers?

These look as this system heavily loads the wheel with very little load n the pilling unit.

onevw is offline   Reply With Quote

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

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:38 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.