Dual wheel conversion

[Chook]

I am a new member and don't quite know who to ask the following questions... hope somebody can help. I have a 1979 CF Motorhome (heavy) but unfortunately with single rear wheels. I need to convert the single to dual rear wheels so am looking for dual rear wheels/axle/diff etc. to suit. When Motorhome unit was built on cab/chassis, provision was made for duals with aluminium bodywork so no problem there. Q1.. Is this conversion feasable?  Q2.. Has anybody got assembly they want to part with?  Q3.. How much $?  Q4.. Is it a simple 'out with the old, in with the replacement?'  Q5.. Has any person ever done this and does it take care of the weight problem?  I would greatly appreciate any help/answers as at the moment I think the Motorhome with its weight (possibly 3 tonnes+) is dangerous to drive. Thanks.. Chook. 

[Warren]

Hi Chook, I have moved your post int a more appropriate location.

To answer some of your questions

Q1 - yes anythings possible - the complexity will depend on a few things if the van origonally was set up for dualies, from my understanding in the vans the chassis is narrower to allow for the dualie diff, I'm not sure if it is the same for the cab chassis though, possibly the chassis is the same width for both situations.

Q2 Ben may have

Q3 Buga-d if I know

Q4 see answer 1

Q dunno

Warren   

[LS120]

how did you come to the total weight?? i have a cf230 & im only 2.4t running singles.

i have had the single spring re-tensioned by 3" & it sits fine now.

im running 215 x 80 x 14 front & back.. if you are still running the old beddy 185's LT thats too small for the weight..

mine are rated at 1100kg each tyer max.

David

[Chook]

Thanks for the reply Warren, and for moving my post to a more suitable location. (wish I knew how to do that). I have taken into account your info and am still looking for the rear assembly. That is an interesting point about the narrower chassis. Hadn't thought about that. Again, thanks. If you come across any further info please advise me..... Chook.

[Chook]

Thankyou NZ LS120 for the reply. Have had the Beddy weighed and on a bad day it comes in at approaching three & half ton. Bear in mind, two water tanks, Dual fuel (two tanks), two spare wheels, 2.0 KVA Genny, 2 Frigs., Solar with 2 huge AGM batteries, 3 large lead acid batteries on the alternator system, built in Air-cond., tools, and then there is the wife's kitchen.. phwew! All items necessary to travel in some sort of comfort.
            The 215x80x14 is interesting. I am running 195's. Are you using standard rims? Or widies? Again thanks for the contact ... Chook.

[LS120]

im running k9 steel rims.. they have been powder coated.. you can see them in my gallery.

the higest i could get was 215 x 85 x 14.. mine at LT as well but went with the 80's as getting then on & off is a little tricky now with the extra height o the tyre.

i will mesure mine & my uncles today & let you know about width as he has a cf350 jumbo & mine was a cf230 cab chasis.

David

[Jeff]

The dual wheel model has deeper wheel arches inside the van, and the axle sits above the springs, not underneath like the others.
So there will be some mucking around to get it to fit.

[Warren]

LS120, what is the wigth of the K9 rims? 7inches?

Warren

[Chook]

I have been told another alternative is to use standard rims with outside rim turned around with spacer in between rims and modified studs to suit spacer and extra wheel set-up. Anybody else done this or heard of it?... Chook

[Rothu]

Wheel stud spacers are a definite no-no. Very illegal.