I would like to no if you can rotate a off set-stud axle 50mm tandem axles 180 degree and still have your springs under your axle.
Is this the correct way to go to gain 75mm in height or should I cut the spring way from the chassis and add 75mmx 50mm the full lenght of the chassis.
I just feel that lifting the van will give me the clearance i requirer.
I'm about to add shock absorbers all around as I want to the lift the van first before i add the these shockies.
Hi Mick First I would make a fair amount of enquires in regards to this. Insurance, & ADR (Aust Design Rules) in regards to the change as you might not be able to do it for these reasons. Or you might need a engineer Certificate for mod as it is no the standard if in dought ring and speak to the manufacture of your van make & model. Sorry for been a pessimist but Thats life. Regards,
Hi Mick First I would make a fair amount of enquires in regards to this. Insurance, & ADR (Aust Design Rules) in regards to the change as you might not be able to do it for these reasons. Or you might need a engineer Certificate for mod as it is no the standard if in dought ring and speak to the manufacture of your van make & model. Sorry for been a pessimist but Thats life. Regards,
Hi guys,
Thanks again for the reply, I know for a fact that the correct way is to cut-away the springs from the chissic frame and add your required height and lenght of steel then weld it all back together on each side. You must require an engineer certificate to jastficate there workmanship and for insurance reasons also.
Thanks again Davkar
Mick
-- Edited by Mick17 on Sunday 2nd of October 2011 12:05:46 AM
Raising the van with a spacer piece between the chassis and the springs is a common way of doing the raising. No big fuss is generally made about it, however when this is raised it always brings the soothsayers out in force with their warnings.
As for rolling the axles over, there are those on the forums that say that axles are built with a little camber in them. The idea is that when you load the axle up the weight flexes the axle and the wheels end up vertical. I had the axles rolled over on my previous van. After doing that there was no noticeable tyre wear that anything was out of alignment. If you roll the axles, factor in a wheel alignment. Take the van to a truck aligner and he will correct any alignment problems caused by rotating the axles.
Further note on alignment. If you have overlay axles on your van (the ones where the stub axle is welded on top of the main axle) you may have alignment problems. I had problems on my previous van, the front tyres were wearing furiously on the edges. I took it to a truck aligner, he reported that one side was tracking out 6 mm per metre an the other side was not so bad. He remarked that he gets quite a few vans with overlay axles but rarely gets any with straight axles. It appears that some times the overlay stubs are not welded on straight. It was after I had the alignment corrected that I had the axle rotation done. I felt safe to do so as the aligner said it would be OK, he was not able to do it as he did not have the welding gear on hand to shift the mounting plate to the other side of the axle.
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PeterD Nissan Navara D23 diesel auto, Spaceland pop-top Retired radio and electronics technician. NSW Central Coast.
NO! Overlay axles must never be turned over as the stubs will always try to rotate back to the top side (Basis Physics). This imposed massive forces on the 'U' bolts & stub axles etc... Overlay axles are also manufactured with a Camber bend in them that straightens out when a load is applied. If the axle is turned over this camber bend will bend even futher (The wrong way) resulting in increased axle steer and worn tyres.
The best way to increase the height of the van is to have a chassis riser welded to the chassis rails or fit a 'Straight' axle. If ordering a 'Straight' axle insure that it is supplied with a Camber Bend' as some manufacturers may supply them perfectly straight which will result in the axle bending the wrong way and thus increase axle steer and tyre wear. Best of luck, Ozjohn.
Cheers, Ozjohn.
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Retired Engineer, Ex Park Owner & Caravan Consultant. Holden 2.8 Colorado - Roma Elegance 17'6" Pop Top. Location: Mornington Peninsula Vic.
I will be raising the chassis by welding the correct hieght to the chassis rails and then I will fit my 4 shock absorbers after the spring suspersion is all back in place. The good advice on the wheel alignment is well worth looking into after the job has been done.
Guys I'm looking to get this all done in the Perth area next month. Does anybody know or could recommend anybody with the no how and what they are doing.
it's better to have a recommention than just going to the first stop?????
Thanks again for the advice
cheers
Mick
From: Kalgoorlie
-- Edited by Mick17 on Sunday 2nd of October 2011 04:19:14 PM
Darling why not buy new straight axles. Darling that will gain you 50mm which surely should be enough. Darling then you could do the job yourself.
Hi Jacko,
Thanks again for your wounderful thoughts Sweetheart.
As I've already mention I'm looking for 75mm in height Sweetheart as 50mm, as 25mm is a little short Sweetheart. "But" thanks for trying to satisfied my needs Sweetheart as your a little short!!!!!!
I would of thought you could of recommend someone worthy that could do my job ??????? Sweetheart.
Oh Darling, the mind boggles, don't you think so Sweetheart........
Hi Ma,
Yes I was shocked and little taken back, so I answer the best way I could, just maybe I should send Jacko a get well card with lollies on the front sweetheart.?????? Hey
