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Post by Joepublic on Mar 2, 2022 11:26:43 GMT 1
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Post by upkeep on Mar 2, 2022 12:41:19 GMT 1
Yes that's CSI surprised they managed to hit the car in the first place  |
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Post by Joepublic on Mar 2, 2022 12:51:07 GMT 1
Yes that's CSI surprised they managed to hit the car in the first place Even the car into a block the rear wheels lift, side impact the trailing wheels lift so the rears must have little effect? |
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Post by rhyds on Mar 2, 2022 12:51:14 GMT 1
From a quick look at the Ferodo parts catalogue it seems the wheel bearings are part of the drum, so as chippie suggests it might be worth seeing if the spindles on a MK1 Focus rear brake disc setup are the same. I know the drums on those are also part of the drum, so I assume the disc setup is the same.
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Post by upkeep on Mar 2, 2022 14:17:00 GMT 1
Yes that's CSI surprised they managed to hit the car in the first place  Even the car into a block the rear wheels lift, side impact the trailing wheels lift so the rears must have little effect? Yes they do have that tendency, but full EV's don't tend to do that, as for the CSI barrier our one doesn't tend to do that I would be interested to see what the CofG was. |
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Post by upkeep on Mar 2, 2022 14:18:07 GMT 1
From a quick look at the Ferodo parts catalogue it seems the wheel bearings are part of the drum, so as chippie suggests it might be worth seeing if the spindles on a MK1 Focus rear brake disc setup are the same. I know the drums on those are also part of the drum, so I assume the disc setup is the same. Thanks I will have a look at that, I do appreciate the input from you guys |
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Post by rhyds on Mar 2, 2022 14:56:56 GMT 1
Its an interesting teabreak thought exercise. Problem is there's not many solid beam axle disc brake setups I can think of, and Ford were surprisingly stingy with braking power. On the MK2 Focus petrols you have to go all the way to the 2.0 unit before they offered rear discs as standard.
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Post by upkeep on Mar 2, 2022 17:00:07 GMT 1
Its an interesting teabreak thought exercise. Problem is there's not many solid beam axle disc brake setups I can think of, and Ford were surprisingly stingy with braking power. On the MK2 Focus petrols you have to go all the way to the 2.0 unit before they offered rear discs as standard. Yes and as we don't need suspension a solid beam was easy but it's now turned into a legacy thing, I may look at machining the backplates and adding another brake cylinder. |
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Post by rhyds on Mar 2, 2022 22:01:25 GMT 1
Its an interesting teabreak thought exercise. Problem is there's not many solid beam axle disc brake setups I can think of, and Ford were surprisingly stingy with braking power. On the MK2 Focus petrols you have to go all the way to the 2.0 unit before they offered rear discs as standard. Yes and as we don't need suspension a solid beam was easy but it's now turned into a legacy thing, I may look at machining the backplates and adding another brake cylinder. GSF sells the whole rear shoe assembly for a focus mk2 complete with back plate. Might be worth seeing if its an upgrade www.gsfcarparts.com/za013641 |
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Post by valhalla on Mar 3, 2022 0:51:44 GMT 1
In the above test the rear wheels of the sled are off the ground, so wont have any braking effect? So I'd have thought improving the front brakes would have a greater effect? +1 here - I would have thought that the problem is on the front axle braking, not the rear axle, as the sled is noticably "bunny-hopping" during the side impact, i.e. the rear wheels have already slowed much greater than the sled velocity.
Only reason I mention this is that the same behaviour is seen in the Defender 90 when the rear disc brakes (post-93) were introduced (after drums phased-out) and you have not enough weight on the rear loadbed for the increased braking on the rear, solid axle.
Maybe some stickier tyres?
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Post by studabear on Mar 6, 2022 8:49:38 GMT 1
Fiesta ST150 had solid beam and rear discs.
Is the escort axle mk3 4 or 5?
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Post by upkeep on Mar 6, 2022 15:22:55 GMT 1
Fiesta ST150 had solid beam and rear discs. Is the escort axle mk3 4 or 5? Thanks I will see if I can take some photos and you will see what I am dealing with, the axles have been welded in to place after being aligned on our 4 wheel aligner so in a perfect world a unbolt and bolt on would be preferable with the smallest amount of effing around.
I will look at a Fiesta ST axle.
You have to bear in mind it's on 13 inch wheels and the barrier has to be a certain height and width, so it's quiet a small window to work in.
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Post by studabear on Mar 6, 2022 15:31:27 GMT 1
Could you fit a bigger bore master cylinder or a couple of master cylinders to make the existing brakes work a bit harder?
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Post by upkeep on Mar 11, 2022 18:18:39 GMT 1
Bit of an update, Knowing the axles are from a Ford Escort van I got a pair of Escort brake disc's knowing the would fit the stud pattern, I also manage to get a pair of NOS rear hubs that will need machining (As I don't want to machine the originals as it is still being used) so they will fit nicely over the hub. Next is to remove the backplate and fabricate a caliper hanger then check for clearance with an as yet undecided caliper whatever I find in the parts box.
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Post by upkeep on May 22, 2022 9:37:18 GMT 1
Update the disc conversion did not give the performance advantage we were hoping for so we had a rethink and decided it was the actuation of the system that required upgrading, so we had a half completed barrier that needed finishing and we managed to get a trailer actuator and we came up with this, (don't worry about the brake line these have since been securely fixed). also it will all be powder coated when we are satisfied with it. So Electronic box with battery monitor that triggers the system,12 battery,1 liter fillable nitrogen bottle, manifold for filling system and pressure gauges with pressure relay, Mastercylinder and actuator. we are using Mondeo discs and calipers all round.
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