22 replies to this topic

[Carlos W]

I’m having a bit of a mare with the offset on the front end of the mini.

It’s running mini hubs and metro drive flanges, but the wheels are sticking out far too far (12x5.5)

They’re fine on the rear. I’m aware the metro flanges move the wheel a bit further out, but this is ridiculous.

So, are all disc hubs the same off set?

[Ethel]

Always assumed they had more as the wheels tend to stick out the same front and rear when paired up with spacered drums.

 

Metro flanges come in 2 variations for vented and non-vented discs.

[Carlos W]

Always assumed they had more as the wheels tend to stick out the same front and rear when paired up with spacered drums.

Metro flanges come in 2 variations for vented and non-vented discs.

The disc sits perfectly in the calliper so I’m sure the flanges are right, but the wheel sticks out miles

[DeadSquare]

Try putting on the Hub Caps.

 

If they don't fit, you have probably got the wheels inside out.

 

 

[Carlos W]

Try putting on the Hub Caps.
 
If they don't fit, you have probably got the wheels inside out.
 
 

Haha ha

Thanks

[imack]

7.5" and 8.4" solid discs add 1" PER SIDE to the track width over drum setups. Vented discs add approximately another 1/4" PER SIDE over solid discs.

[Dannyboolahlah]

What offset are the wheels wheels?
I have 12 X 5.5 on mine with metro turbo brakes, and it's slightly wider at the front but a little bit of camber and it's spot on.

[nicklouse]

as mentioned the discs move the wheels out 1" per side Vents put them out a tad more. some of the alloy hubs also change the offset.

and then there is the wheel ET.

[mini13]

In the past I have taken material from the disc so I can run non vented flanges with vented discs, but you can't do this with all discs, in particular Brymbo discs have a lot of meat for machining, iirc 600thou was machined off

[Spider]

You may need to got to wheels with a different ET (off set) and ideally, this should be chosen with regards to scrub radius at your chosen ride height.

 

Metro flanges come in 2 variations for vented and non-vented discs.

 

If I recall, the non-vented Metro Flanges give the same off-set as stock 8.4 Mini types.

 

Vented discs add approximately another 1/4" PER SIDE over solid discs.

 

I seem to recall the Vented Drive Flanges give around 3/8 to 1/2" more per side. Looking at the Tracking info on the Metro's, Solid vs Vented Disc cars have 1" in total wider front track.

[imack]

You may need to got to wheels with a different ET (off set) and ideally, this should be chosen with regards to scrub radius at your chosen ride height.
 

Metro flanges come in 2 variations for vented and non-vented discs.

 
If I recall, the non-vented Metro Flanges give the same off-set as stock 8.4 Mini types.
 

Vented discs add approximately another 1/4" PER SIDE over solid discs.

 
I seem to recall the Vented Drive Flanges give around 3/8 to 1/2" more per side. Looking at the Tracking info on the Metro's, Solid vs Vented Disc cars have 1" in total wider front track.

8.4" mini drive flange on the left, metro vented flange on the right with a 3/8" spacer and a 1/8" factory spacer from the early 70's.
Difference between the flange heights is around 1/4"

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[Ethel]

Another thing I should have compared properly while I had the bits.

The inner face of a vented disc is at the same spacing to a solid one. Surely the flange just compensates for the added thickness? Afterall, all of 'em have to fit on the same CV joint.

[Ethel]

...silly question...

Have the wheel locating lugs been ground off from around the hub nut?

[Spider]

 

You may need to got to wheels with a different ET (off set) and ideally, this should be chosen with regards to scrub radius at your chosen ride height.
 

Metro flanges come in 2 variations for vented and non-vented discs.

 
If I recall, the non-vented Metro Flanges give the same off-set as stock 8.4 Mini types.
 

Vented discs add approximately another 1/4" PER SIDE over solid discs.

 
I seem to recall the Vented Drive Flanges give around 3/8 to 1/2" more per side. Looking at the Tracking info on the Metro's, Solid vs Vented Disc cars have 1" in total wider front track.

8.4" mini drive flange on the left, metro vented flange on the right with a 3/8" spacer and a 1/8" factory spacer from the early 70's.
Difference between the flange heights is around 1/4"

 

 

While in the workshop today, I did measure a pair of new flanges and yes, you are right here (actually 0.230" difference).

[Spider]

Another thing I should have compared properly while I had the bits.

The inner face of a vented disc is at the same spacing to a solid one. Surely the flange just compensates for the added thickness? Afterall, all of 'em have to fit on the same CV joint.

 

That's the only reason for the added off-set.

 

The caliper needs the same amount of space and so when a thicker disc, like for a vented set up, is used, the flange needs to be off-set by the added thickness of the disc.