tag axle motorhome with front coilsprings to hard - Motorhome Forums, Motorhome Discussion, Motorhome Chat

User Tag List

 4Likes
Reply
 
LinkBack Thread Tools
post #1 of 12 (permalink) Old 13-12-2018, 20:05 Thread Starter
Senior Member
 
powerplus's Avatar
 
Join Date: Oct 2014
Location: berkshire
My Motorhome: swift sundance 620fb
Posts: 1,006
Thanks: 9
Thanked 102 Times in 97 Posts
tag axle motorhome with front coilsprings to hard

hi



a friend has a late ducato frankia motorhome with a tag axle

the weight on the front is only around 1650kg and the front springs seem to hard

i remember someone on one of the forums having some replacement front coils fitted that are a bit softer

possibly goldsmitt or something similar and wandered if they noticed a difference

barry
powerplus is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 13-12-2018, 20:12
Senior Member
 
rayc's Avatar
 
Join Date: Jun 2008
Location: Corfe Mullen, Wimborne Dorset
My Motorhome: Pilote 740C Sensation
Posts: 7,284
Thanks: 66
Thanked 225 Times in 204 Posts
Personal Aire
Quote:
Originally Posted by powerplus View Post
hi



a friend has a late ducato frankia motorhome with a tag axle

the weight on the front is only around 1650kg and the front springs seem to hard

i remember someone on one of the forums having some replacement front coils fitted that are a bit softer

possibly goldsmitt or something similar and wandered if they noticed a difference

barry
Has it got the 3L engine?
rayc is online now  
post #3 of 12 (permalink) Old 13-12-2018, 20:42 Thread Starter
Senior Member
 
powerplus's Avatar
 
Join Date: Oct 2014
Location: berkshire
My Motorhome: swift sundance 620fb
Posts: 1,006
Thanks: 9
Thanked 102 Times in 97 Posts
hi

no it has a 150hp 2.3 and with 5.2t the power is adequate for it

barry
powerplus is offline  
 
post #4 of 12 (permalink) Old 14-12-2018, 10:39 Thread Starter
Senior Member
 
powerplus's Avatar
 
Join Date: Oct 2014
Location: berkshire
My Motorhome: swift sundance 620fb
Posts: 1,006
Thanks: 9
Thanked 102 Times in 97 Posts
hi all

speaking with my friend

he seems to think that there are springs about that are more progressive so that its not so its not so hard on the rebound

he thinks the first third of the travel is softer

hope this makes sense

barry
powerplus is offline  
post #5 of 12 (permalink) Old 14-12-2018, 10:54
Senior Member
 
dghr272's Avatar
 
Join Date: Jun 2012
Location: Carrickfergus NI
My Motorhome: Arapaho
Posts: 4,264
Thanks: 163
Thanked 426 Times in 401 Posts
Personal Aire
Previous thread here...

https://forums.motorhomefacts.com/30...t-springs.html

Terry

In the land of the blind the one-eyed man is king.

Testiculi ad Brexitam
dghr272 is online now  
post #6 of 12 (permalink) Old 14-12-2018, 11:00
Senior Member
 
Mrplodd's Avatar
 
Join Date: Mar 2008
Location: Weymouth
My Motorhome: A Caravan of all things !!
Posts: 8,665
Thanks: 100
Thanked 462 Times in 388 Posts
1650 on the front axle is pretty substantial!! (Way over three quarters of a tonne on each wheel)

Why does he say the springs are ďhardĒ? Is the suspension bottoming out on bumps etc? If so then they are in fact too weak rather than being too hard! Thatís a very common gripe with tag axle MHís

What tyre pressures is he running at as too high a pressure can give a similar feeling.

Out of interest is that 1650 the plated or actual weight on the front axle? Itís terrifyingly easy to go a long way over the plated front axle weight with a MH.

First thing I would do if it was mine would be a visit to the weighbridge to find out the actual axle loading and work from that.

Andy

Its not the destination that matters.

It's who you share the journey with (even if itís in a caravan!) I am very fortunate to have Mrs Plodd to share mine with
Mrplodd is online now  
post #7 of 12 (permalink) Old 14-12-2018, 11:06
Senior Member
 
rayc's Avatar
 
Join Date: Jun 2008
Location: Corfe Mullen, Wimborne Dorset
My Motorhome: Pilote 740C Sensation
Posts: 7,284
Thanks: 66
Thanked 225 Times in 204 Posts
Personal Aire
I guess that at 5.2t MGW the front axle limit will be over 2t. I wonder if the tyre pressures are too high for the actual load?
erneboy likes this.
rayc is online now  
post #8 of 12 (permalink) Old 14-12-2018, 11:45
Senior Member
 
erneboy's Avatar
 
Join Date: Feb 2007
Location: Spain + Germany
My Motorhome: Four Winds RV
Posts: 24,643
Thanks: 117
Thanked 413 Times in 390 Posts
I'd start with Andy's suggestion. If he's running at the recommended tyre pressures (70psi or so from memory) the van will feel far too hard. Similarly if he's on Michelin camping tyres they give a hard ride.

On our Frankia, also 5.2 tons, I ran the tyres at 55 psi and fitted continentals. That improved the ride greatly. I did fit new front springs but that was because the front was far too low. The van looked as though it was permanently travelling downhill and needed levelling ramps even on level ground.

Propaganda works best when those who are being manipulated are confident they are acting on their own free will.
Joseph Goebbels
erneboy is online now  
post #9 of 12 (permalink) Old 15-12-2018, 09:05 Thread Starter
Senior Member
 
powerplus's Avatar
 
Join Date: Oct 2014
Location: berkshire
My Motorhome: swift sundance 620fb
Posts: 1,006
Thanks: 9
Thanked 102 Times in 97 Posts
hi all

yes they are Michelin camper tyres and i think he has them at around 70 psi

i have a chart from continental that i will show him that says at 1700kg the air pressure is a lot lower than 70 psi

some were around 50 psi i think

i will look and try and post the chart on here shortly


barry
Attached Files
File Type: pdf conti pressure 1 (1).pdf (610.5 KB, 10 views)
erneboy likes this.

Last edited by powerplus; 15-12-2018 at 09:47.
powerplus is offline  
post #10 of 12 (permalink) Old 15-12-2018, 10:10 Thread Starter
Senior Member
 
powerplus's Avatar
 
Join Date: Oct 2014
Location: berkshire
My Motorhome: swift sundance 620fb
Posts: 1,006
Thanks: 9
Thanked 102 Times in 97 Posts
hi all

i missed a conti page

barry
Attached Files
File Type: pdf conti pressure 1.pdf (259.5 KB, 6 views)

Last edited by powerplus; 15-12-2018 at 10:13.
powerplus is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Motorhome Forums, Motorhome Discussion, Motorhome Chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome