Hub vs flange mounted brake drum

[89Laredo]

HUB MOUNT = Behind the Hub = 4401250/Centric 12365012
FLANGE MOUNT = in front of the hub/"Floating"=4401469/Centric 12265025

Theres also a 2" difference in OD.

IMO Hub mount vs Flange mount seems like a pretty simple/easy to understand description, but maybe its just from working on this stuff so long.

 

[rreegg]

Both drums are noticeably difference upon comparison but are very similar otherwise. I'm curious to visually compare the two different hubs. It's full floating and semi-float?

 

[u2slow]

HUB MOUNT = Behind the Hub = 4401250/Centric 12365012
FLANGE MOUNT = in front of the hub/"Floating"=4401469/Centric 12265025

Theres also a 2" difference in OD.

IMO Hub mount vs Flange mount seems like a pretty simple/easy to understand description, but maybe its just from working on this stuff so long.

I can agree with that.... however, on a 88 f250 theres no drum that mounts behind the hub.

 

[u2slow]

Both drums are noticeably difference upon comparison but are very similar otherwise. I'm curious to visually compare the two different hubs. It's full floating and semi-float?

One has a hub. The other has no hub.

fullfloat

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semifloat

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[rreegg]

@u2slow Dude thanks! I was too slow
I couldn't remember the axle code and didn't look again but mine is full float

So much makes sense now

 

[89Laredo]

I can agree with that.... however, on a 88 f250 theres no drum that mounts behind the hub.

Yeah I was thinking d70 vs 10.25 instead of full float vs semi. Ive never seen a semi float 10.25
So, I would /guess/ that the "hub mount" is for full float and "flange mount" would be for the semi float mounted to the axle flange. Which would make sense considering the size of the hub hole.
Not sure why they couldnt just list it as semi float and full float.