ABS System for a 5A???

Discuss and exchange views and technical information about our cars.

Moderators: scimjim, philhoward, erikscimitardemon, Roger Pennington, Lukeyboy46

Scott
RSSOC Member
Posts: 55
Joined: Tue Apr 25, 2017 12:55 pm
Location: Mirfield, West Yorkshire
Has thanked: 6 times
Been thanked: 3 times

ABS System for a 5A???

Post by Scott » Mon Jun 25, 2018 1:30 pm

Hey guys due to a recent scare involving an idiot (not me :D ) and a rather big lock up I have decided to start investigating the possibility of installing ABS to my 5A.

Has anyone done this or looked at option previously?

Need a suitable donor vehicle with similar overall weight, front/rear weight distribution, center of gravity, roll rate, and wheelbase (also rear wheel drive)

I am thinking rx8 at the moment

Anyone got any ideas or opinions??



User avatar
Coupe Racing
RSSOC Member
Posts: 7059
Joined: Mon Jul 23, 2007 10:51 pm
Location: Nr Telford - Shropshire
Has thanked: 7 times
Been thanked: 82 times

ABS System for a 5A???

Post by Coupe Racing » Mon Jun 25, 2018 2:25 pm

Try E36 318i as it has rear drum brakes
Likely to be a huge job to be honest
Don’t forget the type approval and insurance implications


Blessed are the Cheese makers

Better to be an hour early than 1 minute late

User avatar
scimjim
RSSOC Member
Posts: 35848
Joined: Sun Oct 01, 2006 10:08 pm
Location: Gloucester
Has thanked: 113 times
Been thanked: 818 times

ABS System for a 5A???

Post by scimjim » Mon Jun 25, 2018 2:57 pm

I think the problem would be the control unit - anything too modern and it’s all integrated via CANBUS. Are there any aftermarket standalone options?


Jim King

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

User avatar
philhoward
RSSOC Member
Posts: 24093
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 41 times
Been thanked: 527 times
Contact:

ABS System for a 5A???

Post by philhoward » Mon Jun 25, 2018 3:07 pm

I think Steve is probably right - needs to be something pre-2000 if using a donor.

Not heard of anyone doing an aftermarket system and virtually everything has it now so no call for it (ABS delete was the desired thing a few years back!).


Phil Howard
Scimitarweb Forum Admin
SS1 1600 Rooster Turbo; Sabre Mk1.5, Sabre Mk2
Previous: SE5/5a/SS1 No.1/SS1 Rooster/SS1 1800Ti/SE5a 24 Valve
http://www.ss1turbo.com
Never try and argue with an idiot. They drag you down to their level, then beat you based on experience.

Scott
RSSOC Member
Posts: 55
Joined: Tue Apr 25, 2017 12:55 pm
Location: Mirfield, West Yorkshire
Has thanked: 6 times
Been thanked: 3 times

ABS System for a 5A???

Post by Scott » Mon Jun 25, 2018 3:59 pm

there is an Aftermarket Bosch unit but its for race car applications and over£6,000!!!!!!!!!!!!
will look into the BMW thanks



*JP*
Posts: 581
Joined: Tue Oct 19, 2010 5:19 pm
Has thanked: 13 times
Been thanked: 12 times

ABS System for a 5A???

Post by *JP* » Mon Jun 25, 2018 8:29 pm

Anything is possible but ABS on an old car seems like a masssive task in both expense and time...TVR went bust even without spending to fit it to any of their cars,saying the cost was prohibitive.

Learning cadence braking might be advisable... :)



User avatar
philhoward
RSSOC Member
Posts: 24093
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 41 times
Been thanked: 527 times
Contact:

ABS System for a 5A???

Post by philhoward » Mon Jun 25, 2018 9:00 pm

If you locked the wheels then you need better tyres, maybe?..


Phil Howard
Scimitarweb Forum Admin
SS1 1600 Rooster Turbo; Sabre Mk1.5, Sabre Mk2
Previous: SE5/5a/SS1 No.1/SS1 Rooster/SS1 1800Ti/SE5a 24 Valve
http://www.ss1turbo.com
Never try and argue with an idiot. They drag you down to their level, then beat you based on experience.

User avatar
MarkHawkins
RSSOC Member
Posts: 1530
Joined: Sun May 26, 2013 10:19 pm
Has thanked: 12 times
Been thanked: 19 times

ABS System for a 5A???

Post by MarkHawkins » Mon Jun 25, 2018 9:29 pm

Check brake balance on rollers? The single line system on 5/s and Coupes always seems more a worry to me than lack of ABS.


Custodian of :

1968 '4b Coupe HBL 725G
1972 '5a M/overdrive ALJ 513K - ALJ 513K
1977 '6a M/overdrive - OPJ 62R

ex 1974 '5a auto - VLN 826M
ex 1985 GTC M/overdrive B205 AMT - number 413
ex 1984/85 SS1 number 0007 (1300)

efi_sprintgte
RSSOC Member
Posts: 1130
Joined: Fri Oct 22, 2010 6:24 pm
Location: Sutton, Surrey
Has thanked: 76 times
Been thanked: 53 times

ABS System for a 5A???

Post by efi_sprintgte » Mon Jun 25, 2018 9:51 pm

Scott wrote:
Mon Jun 25, 2018 1:30 pm
Hey guys due to a recent scare involving an idiot (not me :D ) and a rather big lock up

Anyone got any ideas or opinions??
All the 5as I have driven can be locked fairly easily, this is largely due to the remote servo having no feel and not instantly releasing.

Removal or an inline servo make braking far more predictable.


JC

User avatar
MadMax
Posts: 82
Joined: Thu Aug 27, 2015 10:25 am
Been thanked: 1 time

ABS System for a 5A???

Post by MadMax » Mon Jun 25, 2018 10:14 pm

Just a thought as nobody else has mentioned it - If shorter stopping distance is required, ABS alone may not be the answer as it's main purpose is to allow the driver to remain in control during heavy braking, it won't necessarily make you stop any quicker!

Would be a good project though... :)


Max Benton
Reading, Berks
'A HOT N' - Gold 1600 Small Sports
'Zeus' - Yellow Se5a

User avatar
housemartin
RSSOC Member
Posts: 62
Joined: Wed Feb 13, 2013 5:59 pm
Location: The best side of the Scottish Border
Has thanked: 9 times
Been thanked: 4 times

ABS System for a 5A???

Post by housemartin » Mon Jun 25, 2018 10:40 pm

I recently completed a classic rally in a 'modern' 2000 Hyundai Coupe after the scimitar suffered a suspension damage. When trying to stop astride 2 cones the ABS on the Coupe, on the loose, would cause the car to glide on past my intended stopping point only by using the handbrake to overide the ABS and lock the rear wheels could I match the stopping ability of the scimitar. Not science just personal experience that ABS is not the answer to every stopping requirement.
Dan



User avatar
scimjim
RSSOC Member
Posts: 35848
Joined: Sun Oct 01, 2006 10:08 pm
Location: Gloucester
Has thanked: 113 times
Been thanked: 818 times

ABS System for a 5A???

Post by scimjim » Mon Jun 25, 2018 10:49 pm

Yep - sheet ice and gravel will catch ABS out because there’s no real friction, but on tarmac and most other surfaces it will dramatically reduce stopping distance and allow you to turn. Cadence braking can be almost as good as ABS.


Jim King

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

gtcse8
RSSOC Member
Posts: 1372
Joined: Fri Apr 24, 2009 10:11 am
Location: Steeton, Yorkshire Dales
Has thanked: 11 times
Been thanked: 77 times

ABS System for a 5A???

Post by gtcse8 » Mon Jun 25, 2018 11:24 pm

In the 80`s there was a basic system that could be retro fitted to cars of the era.

Possibly a development of the Ferguson / Dunlop / systems of the time.

I think they were linked to the original servo on the car.


See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s, GTC, SST 1800Ti & not a lot of sense

BusaPhill
RSSOC Member
Posts: 151
Joined: Sun Jun 28, 2015 10:28 pm
Location: Sutton,Surrey.
Has thanked: 1 time
Been thanked: 4 times
Contact:

ABS System for a 5A???

Post by BusaPhill » Tue Jun 26, 2018 11:07 am

Scimitar chassis with RX8 running gear seen on Ebay.

Sure a simpler solution could be found.

Did you stamp on the anchors.

Quick search found this.

http://www.racedatasystems.com/bosch-ab ... s-kit.html


1979 Scimitar SE6A V6 3.1 4speed Auto
2005 Mercedes C320 V6 3.0 7speed Auto (Diesel Daily Driver).

Scott
RSSOC Member
Posts: 55
Joined: Tue Apr 25, 2017 12:55 pm
Location: Mirfield, West Yorkshire
Has thanked: 6 times
Been thanked: 3 times

ABS System for a 5A???

Post by Scott » Tue Jun 26, 2018 11:40 am

My main concern is in an emergency situation, yes I stamped on as I was totally caught by surprise at the guy who "appeared" from behind a parked transit at almost 90 degrees right in front of me.
I have invested in new tyres (I am planning on changing to some wider wheels and sticky rubber over the winter)
I should point out this is not my daily driver and as such will never be driven on gravel/ice/rain etc.. (not intentionally anyway)

I new it would be difficult but in all honesty I hadn't considered the insurance ramifications.
Maybe the best thing is upgrade the braking system, as mentioned maybe new servo / brake bias etc..
I was planning on getting the willwood kit over winter (when I change from 14" to 15" wheels.

Whats the general set-up for fast road/track use??



Post Reply

Return to “General Technical Discussion”