Minicooper
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| posted on 17/8/06 at 05:21 PM |
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Smallest wheels on disk braked rear
Thanks in advance,
What are the smallest wheels that can fit over the standard sierra disk braked rear, ie the standard cast bearing with integral brake mounting
I know westfield and catherham can get down to 13 but they use a smaller dics arrangement
Cheers
David
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Kissy
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| posted on 17/8/06 at 05:38 PM |
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I'm using Mk3 escort discs with sierra calipers in Revolution 13" wheels with no bother. I had to take about 0.5 mm off the disc diameter,
but that was to get inside the caliper dictated by the carrier bracket geometry, not because the clearance to the wheel was low. HTH
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Minicooper
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| posted on 17/8/06 at 05:44 PM |
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Thanks for the reply
So your not using the standard sierra brake fitment as cast into the bearing holder?
Any piccies
Cheers
David
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eddymcclements
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| posted on 17/8/06 at 06:08 PM |
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I'm using stock Sierra rear calipers and disks inside 13" Minators.
Eddy
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froggy
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| posted on 17/8/06 at 06:57 PM |
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if your planning your build why not use lobro flanges on your diff unit and bolt the discs on inboard at the rear which will give you the option of
10" or 12" wheels .
ive gone for 10" wheels on my bec kitten and have mocked up a rear bike disc and front bike caliper which will just sneak inside a 10"
wheel for the front brakes and have mounted my rear disc direct onto the diff unit i built as it has no actual diff.
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Minicooper
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| posted on 17/8/06 at 08:03 PM |
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quote:
Originally posted by froggy
if your planning your build why not use lobro flanges on your diff unit and bolt the discs on inboard at the rear which will give you the option of
10" or 12" wheels .
ive gone for 10" wheels on my bec kitten and have mocked up a rear bike disc and front bike caliper which will just sneak inside a 10" wheel
for the front brakes and have mounted my rear disc direct onto the diff unit i built as it has no actual diff.
I'm resonably well on with the build and I'm using the Quaife ATB which uses the tripod outputs so conventional outboard brakes for me
I was thinking about uses the standard mini rear drum brakes using custom made bearing carriers. Trouble is by the time I get custom carriers and all
the other custom stuff needed it will probably run to £500 and I'm not sure they would be up to the job overheating and stuff maybe. Then
it's another £500 to do a custom disk brake version, ideally i don't want to go any bigger than 12" but a light 13" would be
acceptable
Cheers
David
 
Rescued attachment DSCF0046.JPG
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Minicooper
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| posted on 17/8/06 at 08:08 PM |
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quote:
Originally posted by eddymcclements
I'm using stock Sierra rear calipers and disks inside 13" Minators.
Eddy
I had a look on your website looks good, Eddy your wheels how much space is there between the inside of the wheel and the caliper
Thanks
David
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froggy
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| posted on 17/8/06 at 10:23 PM |
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my shafts are vw lobro inner and drum braked sierra outer using the ford bearing carrier and re drilling the hub for mini wheels as z-cars do , if you
turn down the hub 1275 discs will fit giving you plenty of clearance for calipers, i have a drill jig to place over the ford hub to change it to
4" pcd if you need it
i imagine all the z-cars run 13" wheels but i think the ride would be better on 12,s with a slighly taller sidewall as it seems generally
accepted that sevens handle better with a slightly taller sidewall ie 60 series rather than 175/50 13
[Edited on 17/8/06 by froggy]
looks like you have gone for a de-dion beam too then
[Edited on 17/8/06 by froggy]
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eddymcclements
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| posted on 17/8/06 at 11:43 PM |
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About the width of a chocolate mouse's cock. (© Barry Sheene)
I had to bend the handbrake arms slightly to get clearance, but the main problem was the long bolt through the lower wishbone and upright - I had to
shave 1/4" off the height of the bolt head in the lathe.
Eddy
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Minicooper
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| posted on 19/8/06 at 03:26 PM |
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quote:
Originally posted by eddymcclements
About the width of a chocolate mouse's cock. (© Barry Sheene)
I had to bend the handbrake arms slightly to get clearance, but the main problem was the long bolt through the lower wishbone and upright - I had to
shave 1/4" off the height of the bolt head in the lathe.
Eddy
Thanks everyone for the help
Eddy
Could you tell me exactly what you ordered in width, diameter ET centre hole everything, just out of interest did you know that these wheels would fit
or were you just lucky? did you try any other brands?
Cheers
David
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Minicooper
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| posted on 19/8/06 at 03:33 PM |
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quote:
Originally posted by froggy
my shafts are vw lobro inner and drum braked sierra outer using the ford bearing carrier and re drilling the hub for mini wheels as z-cars do , if you
turn down the hub 1275 discs will fit giving you plenty of clearance for calipers, i have a drill jig to place over the ford hub to change it to
4" pcd if you need it
i imagine all the z-cars run 13" wheels but i think the ride would be better on 12,s with a slighly taller sidewall as it seems generally
accepted that sevens handle better with a slightly taller sidewall ie 60 series rather than 175/50 13
[Edited on 17/8/06 by froggy]
looks like you have gone for a de-dion beam too then
[Edited on 17/8/06 by froggy]
I'll have a look into what you said, I was trying to stay away from a lot of machining thats all but thanks for the tip
The Zcars all use at least 13 because certainly a ultralite 12" wheel won't clear the Sierra rear brakes, the fronts are no problem as
expected
Yes I'm using the De dion this has worked very well in the past on other shortwheel base projects with much more power and torque and have
handled brilliantly
I have included another piccie so you can see a bit clearer what has been done, before anyone mentions it I have now corrected the geometry on the
watts link
Cheers
David
 
Rescued attachment DSCF0024.JPG
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froggy
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| posted on 19/8/06 at 06:26 PM |
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ive made my car 6" wider track front and rear to give it a bit more stability as im sure the kitten is longer wheelbase than the mini but
49" track
 
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NS Dev
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| posted on 22/8/06 at 11:50 AM |
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bloody hell, bit sharp there!!!
we all try our best, I usually refrain from answering stuff that I can't answer fully but most are only trying to help!
I was going to say nice to see some good welding on here, but with that last post.............................
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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ned
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| posted on 22/8/06 at 12:00 PM |
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i fitted capri 2.8i 13x7" alloys over standard sierra rear disks/calipers. i had to bend the handbrake lever slightly to get clearance, pics are
somewhere in my archive.
Ned.
beware, I've got yellow skin
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Minicooper
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| posted on 22/8/06 at 01:03 PM |
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quote:
Originally posted by NS Dev
bloody hell, bit sharp there!!!
we all try our best, I usually refrain from answering stuff that I can't answer fully but most are only trying to help!
I was going to say nice to see some good welding on here, but with that last post.............................
Look I apologise for my sharpness I'm in a hurry to get the car sorted.
But in this case they do know the whole answer because it's on there car in the drive, now it could be they are on holiday/busy whatever so
I'll leave it there.
I have already got the carriers blasted, painted and new bearings fitted, new disk brakes and delphi recon calipers so whatever happens I'm
going down this route now
Cheers
David
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Minicooper
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| posted on 22/8/06 at 01:04 PM |
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quote:
Originally posted by ned
i fitted capri 2.8i 13x7" alloys over standard sierra rear disks/calipers. i had to bend the handbrake lever slightly to get clearance, pics are
somewhere in my archive.
Ned.
Thanks Ned
Did you need to use any spacers to do this
Cheers
David
[Edited on 22/8/06 by Minicooper]
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ned
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| posted on 22/8/06 at 02:09 PM |
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no spacers involved, standard wheels as were, though i think these particular wheels (or capri ones in general) have a very low offset (et5 rings a
bell) hence they stuck out of the arches so much.
The thickness of the alloy used and the design of the wheel makes a difference to the clearance of the handbrake mechanism. I plan to get some
compomotive cxr's which marc @mnr says clear the handbrake (with the same mod as i've already done) and are available in more suitable
offsets and are nice and light.
Ned.
http://www.locostbuilders.co.uk/upload/IMG_2140b.jpg
http://www.locostbuilders.co.uk/upload/IMG_2143b.jpg
[Edited on 22/8/06 by ned]
beware, I've got yellow skin
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Minicooper
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| posted on 22/8/06 at 02:26 PM |
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quote:
Originally posted by ned
no spacers involved, standard wheels as were, though i think these particular wheels (or capri ones in general) have a very low offset (et5 rings a
bell) hence they stuck out of the arches so much.
The thickness of the alloy used and the design of the wheel makes a difference to the clearance of the handbrake mechanism. I plan to get some
compomotive cxr's which marc @mnr says clear the handbrake (with the same mod as i've already done) and are available in more suitable
offsets and are nice and light.
Ned.
http://www.locostbuilders.co.uk/upload/IMG_2140b.jpg
http://www.locostbuilders.co.uk/upload/IMG_2143b.jpg
[Edited on 22/8/06 by ned]
Got you Ned,
So the wheel I need, needs to have a small an ET number as possible within reason so the there is less of the inner wheel to touch the brake
calipers
Cheers
David
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NS Dev
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| posted on 23/8/06 at 04:55 PM |
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Bear in mind though that front and rear tracks being vastly different is none too clever an idea and you don't want huhe offsets (i.e. very
small et numbers) on the front as you will get bad steering kickback..........
worth bearing in mind before you go buying wheels.
(ps. not trying to be obstructive, but I have built a number of cars from scratch over the years and have come up against all of these sort of
problems myself and know how bloody annoying they can be!!! )
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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ned
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| posted on 23/8/06 at 04:58 PM |
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if the alloy clears the handbrake bit then the et is irrelevant for that reason, a low et or deep dish type rim could be a way round but it'd
have to eb a negative et to avoide getting close to the caliper and not really workable for this type of car imho.
find a wheel that fits and get the offset to suit the track width/suspension rather than to suit fitting over the discs/calipers.
Ned.
beware, I've got yellow skin
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