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Foz
United Kingdom
761 Posts |
 Posted - 20/11/2021 : 09:53:01
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Early cars have the B6 engine as modified by MG Car Co for the F Magna and Adamant steering columns (though some go the other way on the worm and wheel) plus the 12" hydraulic brake parts all of which are used/useful to us MMMers.
FOZ |
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mike.g
United Kingdom
85 Posts |
Posted - 20/11/2021 : 13:02:04
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An interesting problem with Hornet brakes on MG's and I recall why. In the 1960's there was a firm called Cunard Sports and Specials who operated from Elnathan mews in Paddington.Does any one else remember them ? They broke MG's all the time and I went there to buy a J2 body for the princly sum of £7 and 50 pence. They were about to dismantle a running F1 and told me that it was because it had hydraulic brakes and could not pass an MOT. The reason was that early Hornets had a three bolt mounting for the rear back plates, unlike MG, so some MG people converted their cars to hydraulics using two pairs of Hornet front brakes and making do without a hand brake. Happy days pre MOT .......!
Mike G.
m.j.gooch |
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Foz
United Kingdom
761 Posts |
Posted - 20/11/2021 : 21:50:34
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Hi Mike,
This thread has gone full circle!
A specialist (****) put a set of new 12"hydraulics on this J2 for the owner..... no attempt was made to include a handbrake.... and this was obviously a road car.....would not pass an MoT if it was required... and would invalidate insurance if he had a mishap.......however unlike the F-type I promised to sort it out so it was not scrapped......
FOZ |
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coracle
United Kingdom
1879 Posts |
Posted - 04/12/2021 : 16:33:16
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quote:
Originally posted by coracle
Foz,
Your posting goaded me into taking some action as I have the same problem with some 12" Wolseley style back plates without any provision for a handbrake. Mine however are aluminium and thus I did not wish to subject them to the inevitable twisting forces that a single brake cam would exert.
Please see the photos of my partially complete solution. I have installed twin cams, using standard MG 12" bits and bosses machined up from aluminium tool plate. The forces will thus be split between the two brake shoes. The outer cable attached to one lever and inner to the other. There is just enough clearance for the cable to pass beneath the axle casing.
To further reduce the skewing forces on the brake cam shafts, I intend installing a bridge piece connecting the protruding ends of the cam shafts retained using the oiler threads. Lubrication of the shafts is not critical as I have installed oilite bushes. Temporarily replacing the bolts with grease nipples would facilitate additional lubrication if required.
P.S. The side forces on the brake cam shafts where they enter the bridge piece would be taken by the approx 6mm of exposed shaft beyond the cam lever and not by the bolts in the oiler threads. They merely retain the bridge piece in place.
I know Foz is now sorted but to complete the solution that I had envisaged, see the photo's below with a grease nipple temporarily installed at one end for lubrication and a bolt at the other end of the bridge piece:
I would not have bothered with such a solution had the back plates been steel but being 3mm aluminium I wanted to minimise the risk of distortion. |
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Foz
United Kingdom
761 Posts |
Posted - 06/12/2021 : 22:29:56
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Hi Nigel,
looks good.
making progress here... will attempt a picture ...... trying to source appropriate springs ...
FOZ |
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Fred Boothby
United Kingdom
355 Posts |
Posted - 08/12/2021 : 08:43:20
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| Foz, I am on the case. I will bring over my extensive collection of Wolseley brake parts on Thursday. There should be some springs in there that should do the job , but I will also bring Hotchkiss springs just in case. Fred |
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Fred Boothby
United Kingdom
355 Posts |
Posted - 09/12/2021 : 16:08:01
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| Well, chaps , I got it wrong. Wolseley Wasp brakes are not similar to Hornet brakes. There must be someone out there with a box of odd brake pull-off springs who can help Foz ; or maybe someone knows of a supplier for such articles ? |
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Westbury
United Kingdom
1959 Posts |
Posted - 09/12/2021 : 20:01:01
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Perhaps Barry could post details of the springs he needs, here.
I have quite a collection and may be able to help.
Chris |
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Foz
United Kingdom
761 Posts |
Posted - 09/12/2021 : 20:14:25
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May have not got springs from Fred's box of stuff but did find a Christmas Pudding............
Each backplate has 3 springs..... these can easily be seen in Nigel's posting on page one of this thread..........
I had some bed springs but would have needed to fit a servo to get the shoes to spread!
FOZ |
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LewPalmer
USA
3209 Posts |
Posted - 09/12/2021 : 20:32:11
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The springs look like many common automotive springs available at any good car/trailer shop, but may depend on the length needed. Here are some I found on Amazon.
Lew Palmer
PA1169, 2M1281, NA0651 |
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coracle
United Kingdom
1879 Posts |
Posted - 09/12/2021 : 21:01:58
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I had the same problem on the front brakes that go with the rears in my photos. They are 2 leading shoe on aluminium back plates. I ended up buying several different ones for trial and error. I have ended up with two springs linked together on each shoe for now; probably not the final solution.
For the rears I made adaptors to fit std. MG springs as can be seen in the photos.
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Edited by - coracle on 09/12/2021 21:05:34 |
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coracle
United Kingdom
1879 Posts |
Posted - 28/02/2022 : 21:08:15
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quote:
Originally posted by LewPalmer
The springs look like many common automotive springs available at any good car/trailer shop, but may depend on the length needed. Here are some I found on Amazon.
Lew Palmer
PA1169, 2M1281, NA0651
I stumbled across this supplier for just about any spring.
https://www.leespring.co.uk/extension-springs |
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spindlyspokes
United Kingdom
11 Posts |
Posted - 10/03/2022 : 17:29:56
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| the J2 i had in 1956/7 had large 12" fluid brakes Reg CZ 2002 it had a very well sorted Henry engine with large blower and only a drivers seat.Girls did not like that! |
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