steerfromtherear
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rear brakes
can anyone tell me what is the best way to convert the rear hubs to disc brakes on my 1979 mk 2 escort...
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Paul Dunstan
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RE: rear brakes
2011/03/08 21:51:41
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I have some kits left if interested? I have sold sets on here without complaint.....  http://classic-ford.org/forum/topic.asp?TOPIC_ID=18056
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steerfromtherear
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RE: rear brakes
2011/03/08 22:49:57
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Can you give me a ball park figure delivered to Sydney please paul???
really interested..
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Paul Dunstan
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RE: rear brakes
2011/03/08 23:47:28
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As in the advert - $140 incl post
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Nic
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RE: rear brakes
2011/03/11 07:43:26
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And the Dunstan kit is brilliant!
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SaggaRS
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RE: rear brakes
2011/08/15 00:48:58
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Paul Dunstan
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RE: rear brakes
2011/08/15 21:50:51
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Hi Shaul
I still have a few left if you want me to put a kit aside for you?
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Aaron80
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RE: rear brakes
2012/01/19 00:27:50
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Hi Paul, I purchased your kit a few months back and can vouch that it's top notch. I finally got around to fitting it, had my axles flanges machined to 134.8mm diameter, but have found that there is some movement between the disc and axle. I had a spare axle machined to 135mm and still a similar issue. The issue looks to be more the wheel stud holes and centre hole in the disc hat are a bit on the large size. The wheel stud holes physically look larger than the photo of the one in your instructions. It's a "protech" brand disc and was definitely listed as the equivalent rda/dba 445 part. Have you heard of people having similar issues? The dba discs are no longer manufactured, and I can't find anyone over in Perth stocking the rda 445s. I assume the wheel studs on yours fit tightly through the holes? Any suggestions would be appreciated! Aaron. Sorry - they are "protex" DR445 to be precise. Anyone intending on using this kit should avoid these particular discs.
post edited by Aaron80 - 2012/01/19 00:43:01
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Matt75
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RE: rear brakes
2012/01/19 10:02:07
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RS 2000
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RE: rear brakes
2012/01/19 11:56:08
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Might need a sleeve (63mm id and 68mm od) machined up to properly centre those rotors onto the escort axle flange centre.
Cheers
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Paul Dunstan
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RE: rear brakes
2012/01/19 18:05:04
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Hi Guys. I noticed on my rotors during the development that the stud holes are slightly larger than the studs which shouldn't present a problem when the wheel is in place. More of a concern is the rotor not centering on the axle flange. As the diameter of the spigot is smaller than the hole in the rotor hat it relies on the close machining of the axle flange to retain concentricity. What is the inside diameter of your rotor hat - my genuine ones are 135.30mm and have a small step against the inside flange face. One thing to note is that you may require a small chamfer on the edge of the axle as there may be a radius / step on the inside of the hat as mine have. This may not allow the rotor hat to sit flush against the face of the axle flange and not allow it to run true. This would make sense why the larger diam is still causing grief. Maybe take a file and place a small chamfer (2-3mm) around the outside edge of the flange as shown in the pic below. 
post edited by Paul Dunstan - 2012/01/19 18:25:25
Attached Image(s)
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Aaron80
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RE: rear brakes
2012/01/20 00:15:29
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Hi all, thanks for your suggestions.
I think where I've gone wrong is either the protex discs have an ever so slightly larger inner diameter or my friendly machinist has been a bit tardy on his measurements! Probably a trap for amateurs like myself, perhaps I should have had the machinist start at say 136mm and worked his way down till it was a tight fit. Matt - do your axle flanges fit tight at 134.8mm?
There is no step on the inside of the disc, it's pretty much a right angle at the bottom. I don't have the tools to do an accurate measure of the inside diameter, but a rough tape measure measurement says 135mm to 136mm. I do like the idea of a sleeve on the axle centre, that sounds like it would do the trick nicely, otherwise I will have to start with a fresh set of axles to machine... Alternatively, could also try get my hands on the rda discs to see if they are a better fit.
Cheers, Aaron.
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Paul Dunstan
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RE: rear brakes
2012/01/20 07:23:36
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Hi Aaron I had assumed that all the rotors would be identicle (silly me  ) and in in hind sight it may have been a requirement to confirm the ID first prior to machining. Yes, the centre concentric ring would prob be the cheapest option. The dimensions would be ; Outside daimeter - 64mm Inside diameter - 68mm Thickness - 7mm. I would also suggest a small chamfer on the inside edge of the centre hole to ensure a close fit with the flange face. If you have difficulty getting them done for a reasonable price let me know and I'll see what I can do?
post edited by Paul Dunstan - 2012/01/20 07:31:31
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Aaron80
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RE: rear brakes
2012/01/27 23:04:39
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Hi Guys, I went down the path of having some sleeves machined and then press fitted to the axle hub. It's definately a good solution and centres the disc perfectly. You should be able to just see the sleeve in this pic I have attached. Now to sort out that fiddly handbrake mechanism....
Attached Image(s)
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