Narrow Axle Dually

"Goggles Pizzano" (gogglespizzano) 09/06/2018 at 13:18 • Filed to: None

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Hadn’t seen this before. Neat.

random001 > Goggles Pizzano 09/06/2018 at 13:22

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I have also not seen this before.  Very interesting!

HFV has no HFV. But somehow has 2 motorcycles > Goggles Pizzano 09/06/2018 at 13:22

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my BIL and I once had a conversation about why this inst how dual ys are normally done. We came to the conclusion that there must be some benefit to  a wider rear track adding stability while towing. 

OPPOsaurus WRX > HFV has no HFV. But somehow has 2 motorcycles 09/06/2018 at 13:28

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my guess is that there is a ton of re-engineering that would need to be done. the frame isn’ t far in from the wheel so adding another wheel would probably require frame modification. It would certainly require reworking all the suspension and mounting points. It would further intrude into the bed.

Goggles Pizzano > HFV has no HFV. But somehow has 2 motorcycles 09/06/2018 at 13:29

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I don’t see the benefit outweighing the cost of the wider axle, b ut it must though .

¯\_()_/¯

HFV has no HFV. But somehow has 2 motorcycles > OPPOsaurus WRX 09/06/2018 at 13:29

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oh yeah so the reason is “its easier and cheaper” Makes sense. 

HFV has no HFV. But somehow has 2 motorcycles > Goggles Pizzano 09/06/2018 at 13:31

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as Opposaurus mentioned a narrower axle could actually cost more, as it may require frame modification .

Goggles Pizzano > OPPOsaurus WRX 09/06/2018 at 13:31

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This is a great take.

Jake - Has Bad Luck So You Don't Have To > HFV has no HFV. But somehow has 2 motorcycles 09/06/2018 at 13:31

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Less bed space.

Goggles Pizzano > Jake - Has Bad Luck So You Don't Have To 09/06/2018 at 13:35

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This is another great take. So obvious now that you mention it.

If only EssExTee could be so grossly incandescent > Goggles Pizzano 09/06/2018 at 13:36

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Now slap a pair of super singles on the back.

atfsgeoff > Goggles Pizzano 09/06/2018 at 13:51

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I haven’t seen a narrow-axle dually, but I HAVE seen a wide-axle single rear wheel configuration that GM built as a prototype, which gave a full, flat cargo bed with no wheel well intrusions.

Haase > Goggles Pizzano 09/06/2018 at 14:10

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My dad and I did this to a ‘90s-era Dodge Ram 3500. Went from a flatbed to a long-fleetside bed. Worked out great.

450X_FTW > HFV has no HFV. But somehow has 2 motorcycles 09/06/2018 at 14:42

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At least on newer trucks, the width between the wheel wells is just over 48" wide. This is so the “weekend warrior” can easily fit sheets of 4x8 plywood between the wheel wells. 

gogmorgo - rowing gears in a Grand Cherokee > Goggles Pizzano 09/06/2018 at 14:44

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If I had to guess, I would say this is likely a commercial chassis with a bed dropped onto it. The commercial ones generally had a more generic frame shape to accommodate various work bodies.

Although I really have no idea how this particular generation of truck would've been done. 

Bowtie_Guy > Goggles Pizzano 09/06/2018 at 15:14

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GM from the 1960s to the 1 980s offered a “cab & chassis” package that was built on a standard 1 ton frame. If your ordered one as a dually they came factory with a narrowed rear axle like the one above that would bolt on to any standard 1 ton pickup frame. These would come from the factory as bare chassis for a flat bed or dump box or what not... but you could bolt a regular bed on no problem.

There is a copper twin to the truck above in my home town and my friends dad had a 4wd 1980s version that he used as a plow truck both with regular beds on them

Here is a thread with the picture o the truck above and some more info on them... http://67-72chevytrucks.com/vboard/showthread.php?p=5165592

Die-Trying > Goggles Pizzano 09/06/2018 at 15:58

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cab and chassis rear end. they came on most of the 1 ton trucks that were sold without beds for work trucks..... the narrower track width, helps so that you could get your bed boxes near the same width as the cab. it helps with visibility , and maneuvering a larger truck in and out of tight spaces......

shop-teacher > Bowtie_Guy 09/06/2018 at 16:12

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You’d have to widen the wheel wells though, right?

I like cars: Jim Spanfeller is one ugly motherfucker > HFV has no HFV. But somehow has 2 motorcycles 09/06/2018 at 16:42

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I always figured it was for more bed space.

Kiltedpadre > HFV has no HFV. But somehow has 2 motorcycles 09/06/2018 at 17:16

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I think part of the reasoning is the narrower spacing in the center means you wouldn’t be able to fit a sheet of plywood between the wheel wells.

gmporschenut also a fan of hondas > HFV has no HFV. But somehow has 2 motorcycles 09/06/2018 at 20:00

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moving the mounting points (leaf springs) inward would reduce stability, as any force acting on the outside tire would have a greater amount of leverage.