Inverting axle on a Jayco Expanda

Submitted: Wednesday, Jun 02, 2010 at 13:20
ThreadID: 78991 Views:7266 Replies:7 FollowUps:7
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Hi, we have an on road Jayco Expanda and are looking to gain a bit more clearance. Looking underneath the van it seems like a fairly simple job to invert the axle which would give an extra 6 - 8 cm clearance. Has anyone had any experience doing this & is it a job my reasonably handy husband could do himself? Thanks in anticipation
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Reply By: Baz&Pud (Tassie) - Wednesday, Jun 02, 2010 at 13:57

Wednesday, Jun 02, 2010 at 13:57
scoots68
Friend of ours has a Jayco Destiny and he inverted the axle to gain more height/clearance , and he did it himself, so if you have a handy hubby can't see Y he wouldn't be able to do it.

Pud
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Follow Up By: Lucko - Wednesday, Jun 02, 2010 at 16:07

Wednesday, Jun 02, 2010 at 16:07
I am familiar with two terms - rolling an axle and - underslinging an axle. Rolling an axle essentially means just turning/twisting the axle 180 degrees. With an Alco drop axle, as used in most Jaycos, this is to be avoided because the stub axles are set up with a slight camber to allow for the applied weight. once 'rolled' the camber is 'the other way' to that designed, leading to accelerated tyre wear.
To 'undersling' the axle is to remove the axle from its traditional position above the spring cluster and relocate it under the spring cluster, without rotation. This will give an increased clearance without interfering with camber angle. This can be done by the average home handyman who can weld. However, I believe that any such mod these days has to have an engineer's certificate to satisfy ADRs and insurance requirements. Hope this helps.
Mark
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Follow Up By: scoots68 - Wednesday, Jun 02, 2010 at 22:50

Wednesday, Jun 02, 2010 at 22:50
Thanks Pud for your info. I see you're heading in the same direction as us towards the end of June - might see you on the bitumen somewhere. Cheers Rachael
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Reply By: Lucko - Wednesday, Jun 02, 2010 at 16:31

Wednesday, Jun 02, 2010 at 16:31
Sorry, my post should have been a response to scoot68 not a follow up to Baz&Spud.
Mark
AnswerID: 419251

Reply By: Crackles - Wednesday, Jun 02, 2010 at 17:13

Wednesday, Jun 02, 2010 at 17:13
While not normally a difficult job it could require the centre bolts in the springs to be inverted, the brake lines may not go back, the jockey wheel/rear leveling legs, step, mudflaps & annexe may not be long enough & the plate that locates the axle may need to be modified to fit on the other side. Remember you will gain the thickness of the both the spring & axle plus twice the thickness of the locating plate.
Cheers Craig...........
AnswerID: 419263

Follow Up By: Tenpounder (SA) - Wednesday, Jun 02, 2010 at 19:00

Wednesday, Jun 02, 2010 at 19:00
Yes, and then there's the matter of the towbar tongue: the draw bar may be too high for the towbar, and require a new tongue to get a reasonable line up. Otherwise, you'll have a van with a nose down attitude.
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Reply By: Michael ( Moss Vale NSW) - Wednesday, Jun 02, 2010 at 21:01

Wednesday, Jun 02, 2010 at 21:01
After my experience a few weeks ago with my trailer, i now believe that placing the axle below the spring, should be illegal. I broke the u bolts whilst only doing about 40 kph, it nearly flipped the laden trailer over but at least the axle was captive inside the springs and stayed with the trailer. If i had beed doing 110 kph on the freeway, it would definately flipped the trailer and it would have spat the axle, wheels and all out the back with a potential of hitting cars behind me and possibly killing the people in them.. read my blog before you even think of moving the axle under the spring.. regards Michael
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AnswerID: 419297

Follow Up By: Off-track - Wednesday, Jun 02, 2010 at 21:42

Wednesday, Jun 02, 2010 at 21:42
Axle under leaf should be easier on the u-bolts for starters so instances of breaking them should be reduced.

Besides, there are plenty of vehicles that have axle under leaf as standard.

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Follow Up By: Michael ( Moss Vale NSW) - Wednesday, Jun 02, 2010 at 21:46

Wednesday, Jun 02, 2010 at 21:46
I agree about the load on the u bolts,, it does have that in its favour,,, yes i know they are standard on some vehicles.. Michael
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Reply By: scoots68 - Wednesday, Jun 02, 2010 at 22:03

Wednesday, Jun 02, 2010 at 22:03
Hi, hubby's plan was to roll the axle over, not undersling, as we keep bottoming out going out of the driveway (I kid you not!!) My plan was to by some steel plate to flatten out the dip that causes us to bottom out! We figured that rolling the axle would be simple enough to do but didn't know the repercussions - mechanical, legal, etc, hence the question. Thanks everyone for your replies - I never cease to be amazed at the amount of knowledge on this forum that people are happy to give to others. My thoughts are we'll leave it as is given we're about to embark on a 6000km trip to Alice, Uluru & back with the 4 kidlets. I love this forum, have got so much info in planning our trip, even though we're a bit boring with a people mover & on road van sticking to the bitumen. So thanks again everyone for taking the time to help me out. Cheers Rachael
AnswerID: 419308

Follow Up By: Member - Graham H (QLD) - Thursday, Jun 03, 2010 at 11:53

Thursday, Jun 03, 2010 at 11:53
If you just roll it over your brakes linkages will be facing the rear.

Think things out first


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Reply By: Earthmover & Family - Thursday, Jun 03, 2010 at 04:43

Thursday, Jun 03, 2010 at 04:43
If you have to modify some thing to suit you needs that's one thing.
But this is a case of buying the wrong product.
Sell it and get an off road van or content with what you've got
AnswerID: 419328

Follow Up By: scoots68 - Thursday, Jun 03, 2010 at 15:34

Thursday, Jun 03, 2010 at 15:34
We are very content with what we've got it's just that nothing is ever exactly perfect & I thought I'd ask a question about improving it & getting some advice. Amazingly enough people often do this very same thing on the forum. Good luck with buying your Expanda, hopefully you will choose exactly the right product for you after you have received advice from others on this forum, including me.
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Reply By: Mogul - Thursday, Jun 03, 2010 at 18:22

Thursday, Jun 03, 2010 at 18:22
What are the legalities of doing this. eg. insurance, etc.
AnswerID: 419412

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