Whats the difference between axle in E350 vs E450?

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stevek
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Whats the difference between axle in E350 vs E450?

Post by stevek »

Thanks
And load carrying capacity?
Diameter dimensions?
Weight?
I tired to look it up, but no luck.
And finally, if the rear end was going to "break", how would it?
Whats the weakest "link"?
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Steve
2011 Born Free 22 foot RSK, rear side (corner) kitchen, E350, 29k miles.
Our first motorhome. Lots to learn. Thanks.
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randallrae
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Re: Whats the difference between axle in E350 vs E450?

Post by randallrae »

E450 have a Dana 80 rear axle 11.25" ring gear 77.7 inch track 9600lb rating , E350 have a Dana 70 rear axle 10.5" ring gear and a 75.4 inch track 8500lb rating .
2012 25' rb
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stevek
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Re: Whats the difference between axle in E350 vs E450?

Post by stevek »

Thanks.
What to you think the weakest link would be if the Rear End was to fail due to overloading?
Axle would break?
Bearings? Leaf Spring? Anything else?
Steve
2011 Born Free 22 foot RSK, rear side (corner) kitchen, E350, 29k miles.
Our first motorhome. Lots to learn. Thanks.
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bfadmin
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Re: Whats the difference between axle in E350 vs E450?

Post by bfadmin »

Steve,

The rear axle rating is not the only limiting design factor on what weight can be safely carried in the rear of your E350 Born Free. It also involves the frame and spring design.
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Mike Jean Bandfield
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Re: Whats the difference between axle in E350 vs E450?

Post by Mike Jean Bandfield »

bfadmin wrote:Steve,

The rear axle rating is not the only limiting design factor on what weight can be safely carried in the rear of your E350 Born Free. It also involves the frame and spring design.
...and wheel bearings.
Mike & Jean
2005 26' RSS Diesel
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whemme
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Re: Whats the difference between axle in E350 vs E450?

Post by whemme »

Of course the wheel bearings are part of the Dana rear axle so are considered in the manufacturer's weight rating on the axle.
Bill Hemme - Spencer, Iowa
E-mail: whemme@earthlink.net
2002 Born Free (Ford E-450 V10) 26' RSB
2016 VW Golf GTI - toad
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Mike Jean Bandfield
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Re: Whats the difference between axle in E350 vs E450?

Post by Mike Jean Bandfield »

whemme wrote:Of course the wheel bearings are part of the Dana rear axle so are considered in the manufacturer's weight rating on the axle.
In my, albeit limited experience, excessive weight breaks wheel bearings first. Racing, jack rabbit starts, etc takes our gears, posi-traction and breaks axles. I fixed a lot of rear ends in both cars and work-trucks before I was 30 and none since. Does that say more about my driving or the quality of vehicles since 1975? Maybe excessive speed with mountain driving would affect bearings as well but I would guess that a person's driving habits are the greater factor - as long as loads are not excessively over spec.
Mike & Jean
2005 26' RSS Diesel
bornnorm
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Re: Whats the difference between axle in E350 vs E450?

Post by bornnorm »

What is the front axle rating of the E350 and E450?

Thank you.
Norm Milliard
'93 Born Free 21' RB
'06 Scion xB
Escapee, Full timer
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whemme
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Re: Whats the difference between axle in E350 vs E450?

Post by whemme »

According to my sources, the front axle on both the E350 and E450 chassis is rated at 5,000 lbs.
Bill Hemme - Spencer, Iowa
E-mail: whemme@earthlink.net
2002 Born Free (Ford E-450 V10) 26' RSB
2016 VW Golf GTI - toad
Wildlands1
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Re: Whats the difference between axle in E350 vs E450?

Post by Wildlands1 »

Do all Born Free's have rear axel posi-traction?
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whemme
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Re: Whats the difference between axle in E350 vs E450?

Post by whemme »

No. Non are equipped with posi-traction that I am aware of. Also the rear axle for the E450 has a increased track width of 4.5" over the rear axle in a E350.
Bill Hemme - Spencer, Iowa
E-mail: whemme@earthlink.net
2002 Born Free (Ford E-450 V10) 26' RSB
2016 VW Golf GTI - toad
Wildlands1
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Re: Whats the difference between axle in E350 vs E450?

Post by Wildlands1 »

Wouldn't "posi-traction" be a good thing to add? Wonder how much it would cost nowadays?
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whemme
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Re: Whats the difference between axle in E350 vs E450?

Post by whemme »

E450 have a Dana 80 rear axle, with a 77.7 inch track width and a 9600lb maximum weight rating. E350 have a Dana 70 rear axle with a track width of 75.4 inch and a 8500lb maximum weight rating .
Bill Hemme - Spencer, Iowa
E-mail: whemme@earthlink.net
2002 Born Free (Ford E-450 V10) 26' RSB
2016 VW Golf GTI - toad
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