18 replies to this topic

[spiguy]

Wondering if anyone else had come across this issue. 92 Cooper Spi, so 8.4" disc setup as standard. I bought the minispares own brand 10" conversion kit, and started fitting it tonight. Didn't go well.

 

The problem is that the disc fouls on the hub. The outer part of the hub containing the bearings, fouls on the inside of the disc, the 'top hat' part. In pictures, this part :

 

 

 

Fouls on this part :

 

 

It's pretty bad, you can barely turn the disc at all as it just about binds. I tried fully seating the bearings using the correct flat washer and torqued it up, just made it worse.

 

Cheers

Craig

[nicklouse]

Drive flange fully seated in the disc?

[RawlinsGTR]

This is a recurring issue with trying to use these discs on later hubs..

 

http://www.theminifo...s-75-discs-kit/

 

http://www.theminifo...inding-on-hubs/

 

Which as said in the first link is due to the shape of the later hubs compared to the early hubs.

 

When I had the issue, I just filed the edge on my hubs a bit at a time till the discs stopped binding. They completely locked before I did anything to the hubs, so I thought I'd have to take a lot of material off, but to get them rotating freely not much filing was needed.

 

Hope this helps :)

 

Simon

[spiguy]

nicklouse, yes the flange is fully seated. I read those threads, seems it's not a new problem, however as you can see from my pics the step is already there, and it's not the nose that seems to be fouling, rather the larger part of the hub. I have PM'ed Simon@minispares so i will see what he thinks.

 

Can I safely remove material from the larger diameter part of the hub?

[Dr s]

I believe different discs have a different profile inside the disk and some of them have effectively the same profile as the 8.4 discs and therefore clear the hubs.

[RawlinsGTR]

The step is already there but its there on my hubs to, its just different to the step on older hubs.

Mine binded exactly the same as yours, in the same way. Even just by filing off all the rust etc you'll find the discs free up a little!

It is safe to remove material from there, because you'll probably find you won't have to remove much at all.

Either that or you'll have to find some discs that don't bind :) Good luck!

Edited by RawlinsGTR, 16 April 2015 - 09:21 AM.

[spiguy]

Thanks rawlins. Going to pick up a set of digital calipers at Maplin on the way home today so I can check exactly where it's catching, then I will just need to set about it!

 

By the way, your car is gorgeous...

Edited by carlukemini, 16 April 2015 - 09:33 AM.

[mk3 Cooper S]

This puzzles me . If it is a known issue why hasn't this been fed back to the manufacturers by minispares?If the bore of the disk had an undercut then they would be suitable for early and late hubs and no issue??

 

Am I missing something?

Edited by mk3 Cooper S, 16 April 2015 - 03:09 PM.

[Jayh]

Same happened to me 10mins of filling and it was sorted .

[Stu1961]

Had the exact same problem when I did mine a couple of months ago though yours do seem to be catching further up the hub. Might be worth giving them a good clean first with a wire brush or similar. I spent half hour on each hub with a file which cured the problem. Keep us posted how things turn out.  

[Dr s]

This puzzles me . If it is a known issue why hasn't this been fed back to the manufacturers by minispares?If the bore of the disk had an undercut then they would be suitable for early and late hubs and no issue??
 
Am I missing something?

Those discs would fit an early upright. So as made to spec 7.5 disc they are fine. However given the later spec change of the upright they catch. Not really an issue. You either need matched bits or to clearance the upright

[splintercat]

This puzzles me . If it is a known issue why hasn't this been fed back to the manufacturers by minispares?If the bore of the disk had an undercut then they would be suitable for early and late hubs and no issue??
 
Am I missing something?

same same ......why on earth purchase a conversion kit and then have to spend time and energy filing it to fit? from reading this thread it is quite obvious that it is a common problem so why doesn't someone contact minispares to rectify the problem? no brainer really return the item and get them to rectify it or try another manufacturer !

[[email protected]]

 

This puzzles me . If it is a known issue why hasn't this been fed back to the manufacturers by minispares?If the bore of the disk had an undercut then they would be suitable for early and late hubs and no issue??
 
Am I missing something?

same same ......why on earth purchase a conversion kit and then have to spend time and energy filing it to fit? from reading this thread it is quite obvious that it is a common problem so why doesn't someone contact minispares to rectify the problem? no brainer really return the item and get them to rectify it or try another manufacturer !

 

 

The OP did as soon as he posted the thread. The issue is not the disc, it is the hub. For same reason across a certain timeframe (details I don't have) someone at Rover or their supplier at the time decided the extra clearance wasn't required on the later discs. When they realised it then wouldn't fit earlier cars with a smaller disc, it was then re-instated.

[ChopperHarris]

errrm.....warn buyers on your excellent website?

[Stu1961]

Simon I believe your explanation was put forward when I had the same issue, I wholly agree with your comments that the hub is the problem and not the disc.Would it be worth updating the description on the 'Mini Spares' web site to let people know they may or may not have an issue with the hubs fouling and the reasons why this may be occurring? Just a thought.

Beat me to it Chopper. I do apologise

Edited by Stu1961, 17 April 2015 - 01:15 PM.