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Tar Trekka
Senior Member
Joined: Thu Jun 05, 2008 10:35 pm
Posts: 407
Location: Sydney - Southern Suburbs
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 Someone Has To Be First? Hi there,
I'll be first to ask a question of "The Industry Corner".
My question is regarding "Rolling Over Stepped Axles", "Relocating Springs Above the Axles" & replacing "Stepped Axles with Straight Axles" on caravans.
The pros, the cons, the safety & the legals from "The Industry Corner" may be very useful & informative to Forum Members.
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[size=150][color=#0000FF]Any day above the ground is a great day[/color][/size]
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Cyclone
Senior Member
Joined: Fri Aug 14, 2009 12:37 pm
Posts: 591
Location: Brisbane
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Some srepped axels have slight camber. Rolling over a stepped axel may reverse the camber.
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Cyclone
2000 TI Patrol, Twin Airbags (wife and sister in law)
2008 Franklin Edge
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Dunaruna
Senior Member
Joined: Sat Feb 16, 2008 3:40 pm
Posts: 1269
Location: Yarra Valley
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The basics -
A OVERLAY AXLE is a straight beam with the bearing spindle welded directly above the beam. It is used primarily to lower the van. There is only one main reason to do this, so that the van can be towed with a family (non 4x4) vehicle.
A DROP AXLE is similar to an overlay but the spindle is not welded directly onto the beam, instead, there is a 'packer' to extend the drop. This type of axle can be made to order, the amount of 'drop' can be customised.
A STRAIGHT AXLE is the strongest, the spindles are machined into one single billet.
All axles should have a camber (but often don't). The weight of the van is directed onto the wheels, this weight will cause a negative bend in the axle. Putting a positive bend in the axle compensates for this. Slight toe-in is also advisable but often not done. Most workshops (during a service) do not even check.
Turning ANY axle upsidedown will reverse the camber, it will need to be recambered.
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