1995 Chinook major makeover

[noluck]

https://en.wikipedia.org/wiki/Sterling_10.5_axle
yes it is a 10.5 they were used in the f250 and f350 and lots of room to move the perches with disc brakes

[Scott]

i don't know why the pictures are not the same way as they are in my computer

They're oriented correctly for most users once they're clicked open to full size. It's a minor bug in the forum.

I'm eagerly following your project. Thanks a lot for posting.

[noluck]

got my wheels i set the original nuts at 2" and set the rim on with the caliper on and will have clearance for the rim, 3" adaptor will be perfect

[JabberBox]

No concerns about the potential for premature/accelerated bearing failure as a result of moving the wheels 3" inches out from the wheel bearing centerline and the resulting side loading of said wheel bearings and spindle of a 10,000 pound vehicle?? Asking for a friend....

Any idea how much the cummins engine and tranny combo weighs? I wish you had a BOM number on that sterling so we can look up its GVWR. Seems to me that offsetting the wheels and tires a full 3" inches from the bearing centerline is going to act on the bearings and spindles in a manner that simulates a higher gross vehicle weight than what the truck actually weighs. Then toss in a heavier engine/tranny combo. But then again, what do i know, its only physics
.
Ever watch what some guys do to bearing spindles to make larger diameter axles fit in their truck? They run a boring tool down threw the center of the spindle to open it enough until the larger axle will slide threw the spindle. Ultimately what happens is they get out on the trails and the spindles fatigue to the point where they actually collapse in on themselves and break. Never seems to deter the next guy from doing the exact same thing to his truck. I know youre not boring out your spindles for larger axles, but you are moving the wheels far outbound from the bearing centerline which is going to place an extreme leveraged upward force at the outboard end of the spindles, not unlike using a pry bar to lift an object with roughly 10,000 pounds of force + or - . Ever wonder why different vehicles have different offsets and backspacing? Its because the goal is to keep the weight of the vehicle centered over the centerline of the wheel bearings so that they are not destroyed by placing unreasonable sideloads on them.

Obviously im not a fan of wheel adapters, but its not my truck either so carry on, just sharing some wisdom maybe you overlooked and then again maybe you didnt. Whats next on the list of to do?

Heres a picture of a 3" inch thick wheel adapter on a 10,000 pound dually truck....

IMG_0009.JPG (38.83 KiB) Viewed 6801 times

[noluck]

ya i am not concerned at all, basically i have a 20" rim that i am moving the backspacing 2" (adapter is 2")from a 0 offset. i was always more concerned about the front axle that is factory and engineered by Dana. you have a srw axle then stack a factory 5-6" dually adaptor on it then invert a dually wheel to get it back under the truck? but it seams to have worked for decades with a big heavy diesel under the hood of the super duty. well enough of axle bearing and theory.

next i remove the dash, firewall inner fenders, rad support and floor from the 2010 donor van. that is todays task

[JabberBox]

Its worked for decades because it was designed to work that way by mechanical engineers. The obvious difference is exactly what i already stated. They designed it so that they werent side loading the wheel bearings or leveraging the spindle. Its a balancing act if you will, like those guys you see on youtube balancing small pallets of bricks on their head as they walk.

[noluck]

thanks Jabber i am done!

[noluck]

this is my truck i built. i am a professional builder

[Scott]

No concerns about the potential for premature/accelerated bearing failure as a result of moving the wheels 3" inches out from the wheel bearing centerline and the resulting side loading of said wheel bearings and spindle of a 10,000 pound vehicle?? Asking for a friend....

Any idea how much the cummins engine and tranny combo weighs? I wish you had a BOM number on that sterling so we can look up its GVWR. Seems to me that offsetting the wheels and tires a full 3" inches from the bearing centerline is going to act on the bearings and spindles in a manner that simulates a higher gross vehicle weight than what the truck actually weighs. Then toss in a heavier engine/tranny combo. But then again, what do i know, its only physics
.
Ever watch what some guys do to bearing spindles to make larger diameter axles fit in their truck? They run a boring tool down threw the center of the spindle to open it enough until the larger axle will slide threw the spindle. Ultimately what happens is they get out on the trails and the spindles fatigue to the point where they actually collapse in on themselves and break. Never seems to deter the next guy from doing the exact same thing to his truck. I know youre not boring out your spindles for larger axles, but you are moving the wheels far outbound from the bearing centerline which is going to place an extreme leveraged upward force at the outboard end of the spindles, not unlike using a pry bar to lift an object with roughly 10,000 pounds of force + or - . Ever wonder why different vehicles have different offsets and backspacing? Its because the goal is to keep the weight of the vehicle centered over the centerline of the wheel bearings so that they are not destroyed by placing unreasonable sideloads on them.

Obviously im not a fan of wheel adapters, but its not my truck either so carry on, just sharing some wisdom maybe you overlooked and then again maybe you didnt. Whats next on the list of to do?

Its worked for decades because it was designed to work that way by mechanical engineers. The obvious difference is exactly what i already stated. They designed it so that they werent side loading the wheel bearings or leveraging the spindle. Its a balancing act if you will, like those guys you see on youtube balancing small pallets of bricks on their head as they walk.

Jeez man. There's no need to shit on this thread. You're just repeating your same point anyway: You don't like wheel spacers or adapters. Got it. Move on and let him do his thing. I personally want to see what he does here. And if your negativity pushes him away, the rest of us lose out on his contribution.

[JabberBox]

Negativity? ok if it fits run it....