29-08-2018, 11:38 PM
(This post was last modified: 29-08-2018, 11:43 PM by Dennis Nicholas.)
After further research.
The Lockheed rears are one leading and one trailing shoe.
The design of (most) such set ups is that going forwards one shoe is leading and one is trailing.
Going backwards the previously leading shoe becomes trailing and the previously trailing becomes leading.
Researched sources say that therefore same amount of breaking is applied going forward or backward (important for hand brake to hold when car pointing uphill!)
Rear brakes need to be less effective than 2 leading fronts and 1 lead/1 trail achievs this.
Careful examination of inside of (MM) backplates will show them to be marked LH and RH (Just where welded on recessing bit meets backplate) This is so that on the Morris each backplate is fitted on the axle with the cylinder at the front of the axle and with leaver pointing down and piston opening downwards so MM handbrake mechanism fits.
This is irrelevant on A7. If mounted with cylinder in front of axle the leaver can't point downwards because suspension spring gets in way of pulling. If mounted with leaver pointing up so cable can pull then leaver hits boot floor (on Nippy) (don't ask how I know).
With cylinder behind axle and leaver pointing down and piston moving down the bleed nipple can be positioned pointing upwards so no trapped air.
I have a bracket held on the axle by 2 exhaust U bolts to take the end of the handbrake bowden cable outer (photos to follow). Bracket can be rotated to allow a strait pull on the leaver.
Terry Griffins photo showing Girling shoe holding down pin/spring/washers:
They are from Ford Anglia 105E 1200cc - Pin 40mm, Spring 16.5mm high, 14.5mm dia. (The 997cc pin is 32mm)
See "Ford Anglia 105E shoe hold down pins" on ebay. J&B Anglia 105E Parts have been helpful giving item measurements.
Pull up hand brake leaver fitted over tunnel by left elbow connected by adjustable rod to swinging compensator. From each end of compensator a bowden cable to cylinder leavers. Outer of each inboard end is fixed to vertical part of floor behind Nippy seats. All hand brake parts - Alegro 1973-82. Prior to fitting swinging compensator each cable went to fixed rod through handbrake leaver and the hand-breaking was poor....now compensated and good.
Getting there slowly.
Dennis
The Lockheed rears are one leading and one trailing shoe.
The design of (most) such set ups is that going forwards one shoe is leading and one is trailing.
Going backwards the previously leading shoe becomes trailing and the previously trailing becomes leading.
Researched sources say that therefore same amount of breaking is applied going forward or backward (important for hand brake to hold when car pointing uphill!)
Rear brakes need to be less effective than 2 leading fronts and 1 lead/1 trail achievs this.
Careful examination of inside of (MM) backplates will show them to be marked LH and RH (Just where welded on recessing bit meets backplate) This is so that on the Morris each backplate is fitted on the axle with the cylinder at the front of the axle and with leaver pointing down and piston opening downwards so MM handbrake mechanism fits.
This is irrelevant on A7. If mounted with cylinder in front of axle the leaver can't point downwards because suspension spring gets in way of pulling. If mounted with leaver pointing up so cable can pull then leaver hits boot floor (on Nippy) (don't ask how I know).
With cylinder behind axle and leaver pointing down and piston moving down the bleed nipple can be positioned pointing upwards so no trapped air.
I have a bracket held on the axle by 2 exhaust U bolts to take the end of the handbrake bowden cable outer (photos to follow). Bracket can be rotated to allow a strait pull on the leaver.
Terry Griffins photo showing Girling shoe holding down pin/spring/washers:
They are from Ford Anglia 105E 1200cc - Pin 40mm, Spring 16.5mm high, 14.5mm dia. (The 997cc pin is 32mm)
See "Ford Anglia 105E shoe hold down pins" on ebay. J&B Anglia 105E Parts have been helpful giving item measurements.
Pull up hand brake leaver fitted over tunnel by left elbow connected by adjustable rod to swinging compensator. From each end of compensator a bowden cable to cylinder leavers. Outer of each inboard end is fixed to vertical part of floor behind Nippy seats. All hand brake parts - Alegro 1973-82. Prior to fitting swinging compensator each cable went to fixed rod through handbrake leaver and the hand-breaking was poor....now compensated and good.
Getting there slowly.
Dennis