Fordmods Logo

Bendix ultimate pads & rda slotted rotors a bad combination? 

 

Page 2 of 3 [ 32 posts ] Go to page Previous  1, 2, 3  Next

 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Fri Jan 02, 2015 1:38 am 
Oompa Loompa
Offline

Posts: 34

Joined: 29th Oct 2014

Location: Launceston
TAS, Australia

After reading that I'm definitely getting new pads.
Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Fri Jan 02, 2015 8:37 pm 
Getting Side Ways
Offline

Posts: 973

Joined: 15th Nov 2004

Ride: el wagon

Location: melbourne
VIC, Australia

O.K., I used to get brake shudder, usually after only a few thousand K's until I found the problem. What I found was that one of the front caliper pistons was not retracting properly, and causing a pad (usually the inner) to remain dragging on the rotor. This of course caused heat, which in turn created the DTV, or Disc Thickness Variation.

I have solved the problem by, each time I renew the pads, I also put a kit through the front calipers. At this point in time, I have had no further problems with DTV. 8-)

BTW, I have used Bendix pads solely for 35 years now, and have never had any problems. Also use RDA rotors with no problems 8-)

I use Bendix because they are dust free
Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 10:29 am 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

the bendix of today is much different to the bendix of say 10 years ago.
look at there current ct pads with the stealth technology "wtf" lol ..
the pads don't last no where near the amount of km from the old design, or as long as any other brand, yea there fine on a std car wth std rotors driven by a normal person that drives like old lady..
Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 12:19 pm 
Technical Contributor
Offline

Age: 60

Posts: 6817

Joined: 22nd Jun 2005

Gallery: 8 images

Ride: EF Fairmont

Location: Campbelltown
NSW, Australia

xcabbi wrote:
SWC wrote:
I wouldn't run Bendix pads on slotted rotors.

TROYMAN wrote:
bendix ct pads are rubbish, they leave material build up between the slots on the rotors causing shaking..
I have found, believe it or not ,, the rda extreme hd pads are really cheap and work great. only downside is they are dusty.

and just a bit of trivia, rda is owned by ebc,


Listen to what Troyman said.


Bendix CT pads are used by taxi drivers who arent afraid to open their wallets. The ones that are use Prime Pads.

I've got a set of RDA dimpled and slotted rotors on my AU and included in the purchase was a set of pads. I found they have a bit more bite than normal rotors and defnitely don't fade as much. I have noticed some light shudder going down some pprolonged downhil runs but I am yet to really push them as I'm worried I might warp them big time.


They may be fine on Std Rotors but I have found them not good when using Slotted rotors. I doubt Taxi's use slotted rotors :D .

I was recommended Repco Thermoquiet Pads by a good friend and have found them quite good on slotted rotors. Good bite from cold and stop quite well. Bit dust but no where near as bad as some.
Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 12:31 pm 
Parts Gopher
Offline
User avatar

Posts: 93

Joined: 1st Oct 2011

Location: sydney
NSW, Australia

ive just bought some repco pads, they tell me there rebranded forodo's?

so il put them in over the next couple of days and I let use know how they go.

bit disappointed with how the bendix and rda went I used to have a vq stato and I had dba slotted and cross drilled with bendix ultimates and never had one drama with shudder.

o well that's life.

 

_________________

the road to hell is paved with good intentions.

Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 12:36 pm 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

crossroads wrote:
ive just bought some repco pads, they tell me there rebranded forodo's?

so il put them in over the next couple of days and I let use know how they go.

bit disappointed with how the bendix and rda went I used to have a vq stato and I had dba slotted and cross drilled with bendix ultimates and never had one drama with shudder.

o well that's life.


you should get the rotors machined.
you may find that if you just fit the new pads to the current rotors the problem will still be there as the damage has already been done..
Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 2:25 pm 
Getting Side Ways
Offline

Posts: 973

Joined: 15th Nov 2004

Ride: el wagon

Location: melbourne
VIC, Australia

Quote:
yea there fine on a std car wth std rotors driven by a normal person that drives like old lady..


Dunno about the "normal person" bit.............. :lol: :lol: :lol:
Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 7:44 pm 
Technical Contributor
Offline
User avatar

Age: 53

Posts: 5587

Joined: 14th Jan 2005

Gallery: 10 images

Ride: 96 XH/97 EL

Location: South Coast
NSW, Australia

SWC wrote:
I was recommended Repco Thermoquiet Pads by a good friend and have found them quite good on slotted rotors. Good bite from cold and stop quite well. Bit dust but no where near as bad as some.
Are you still running ADB (Aust disc brake) rotors Paul?
Also running the ADB pads ?

If so, how are you finding their performance ?

 

_________________

96 XH Longreach 'S': LPG, Alarm, 3.23:1 LSD, Cruise, Trip Comp, ABS, Power Windows, Mid Series Dome Lt, Climate Ctrl
97 EL Futura S/W: LPG, Alarm, LED int Lts, Trip Comp, F/Lane Dome Lt, Climate Ctrl, T5 Conversion

Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 7:55 pm 
Technical Contributor
Offline
User avatar

Age: 28

Posts: 3705

Joined: 27th Sep 2006

Gallery: 20 images

Ride: ED Falcon

Power: 133 rwkw

Location: Leeton
NSW, Australia

I had Bendix Ultimates on DBA slotted and drilled rotors... It was shocking... I had good pedal feel but just no bite out of the pads... Even the dual diaphragm booster couldn't help it, nor braided lines to increase the pressure at the caliper...

Now I run DBA T4's with RDA pads... Much better pad than the Bendix... Old man was Bendix through and through but some sets he used a while back were just crap so he has switched to RDA's now and other than being a bit dusty (esp on the turbo which is on std rotors), at least they stop...

Cheers,
Tim

 

_________________

93 Red ED 5spd Manual Build Thread

Performance: Complete AUII VCT Wiring & Power Train, Pacey Headers, 2.5" Exhaust, Exedy Clutch, DBA Rotors
Visuals: FG XR Wheel, XR Front, 17's, BA 5 Spd Shifter, BA Ghia Window Switches, NL Cluster
Tunes: 8" Pioneer Sub, JBL Speakers, Clarion Double DIN Headunit

Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 8:06 pm 
Technical Contributor
Offline

Age: 60

Posts: 6817

Joined: 22nd Jun 2005

Gallery: 8 images

Ride: EF Fairmont

Location: Campbelltown
NSW, Australia

snap0964 wrote:
SWC wrote:
I was recommended Repco Thermoquiet Pads by a good friend and have found them quite good on slotted rotors. Good bite from cold and stop quite well. Bit dust but no where near as bad as some.
Are you still running ADB (Aust disc brake) rotors Paul?
Also running the ADB pads ?

If so, how are you finding their performance ?


I was running them. I have them now on the wagon and find them very good. Pads are great, good stopping power and very long lasting with little dust.
Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 03, 2015 10:08 pm 
Technical Contributor
Offline
User avatar

Age: 53

Posts: 5587

Joined: 14th Jan 2005

Gallery: 10 images

Ride: 96 XH/97 EL

Location: South Coast
NSW, Australia

I must have a dud batch - I'm running their slotted and dimpled rotors - pads are very ordinary though.
I get bad shudder through the steering wheel - much like the OP's are. It's not disc runout, or bearing adjustment. It did this right from the outset.
The pads were losing material - here's how they looked at 1500 km.

 

 

Attachments:
2014-12-11.jpg
2014-12-11.jpg [ 224.9 KiB | Viewed 52 times ]

 

_________________

96 XH Longreach 'S': LPG, Alarm, 3.23:1 LSD, Cruise, Trip Comp, ABS, Power Windows, Mid Series Dome Lt, Climate Ctrl
97 EL Futura S/W: LPG, Alarm, LED int Lts, Trip Comp, F/Lane Dome Lt, Climate Ctrl, T5 Conversion

Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Thu Jan 08, 2015 12:09 am 
Parts Gopher
Offline
User avatar

Age: 47

Posts: 92

Joined: 8th Apr 2012

Ride: EA Falcon S 30th Anniversary

Location: Brisbane
QLD, Australia

I had RDA slotted and Bendix Ultimate no problems for many many kilometres. I concur with other comments - I kit the front calipers and lube the slides every time.

I got sick of cleaning snowflake wheels every few days so recently I tried going to Bendix CT. That lasted less than 2000km horrible noise and truly truly scary brake performance.

I just did the EA all round new DBA slotted rotors and trying the Bosch Quikstop pads. Seem good but have a slight squeal in rear end. Looking into it but seems the Bosch pads are a good compromise between dust and good braking.

As a comment, I recently did my XH with DBA T2 and Bendix HD pads. I think this is the perfect combo but if you don't mind dust I always found Bendix Ultimates are a very good product. They are aggressive on discs but I change discs every set of pads anyhow.

 

_________________

1991 EA2 Ford Falcon S Sedan
LeMans Red - 30th Anniversary 3.9 MPFI Manual LSD

1996 XH Ford Falcon Outback Ute
LeMans Red 4.0 Auto

Originality saves our history.

Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Thu Jan 08, 2015 9:21 pm 
Parts Gopher
Offline
User avatar

Posts: 93

Joined: 1st Oct 2011

Location: sydney
NSW, Australia

ok folks a bit of an update.

ive pulled the bendix ultimate pads out of eddie the ed and had a look.

the boots on the caliper pistons look all fine, not cracked or broken and the pistons are all the way back in the calipers so il assume there retracting in as per spec.

the discs look ok I suppose (the orangey mark in the pic is just the light on the shed) there dusty as.
im going to go to repco tomorrow and get a dial gauge to check the runout.

the ultimate pads do look a bit glazed.
now heres were it gets interesting, the lighter colour pads are the new unused repco/ferodo pad. I measured the thickness of the pad friction material and the ultimates are 8mm after approx. 3000km and the new repco/ferodos are 7mm.

the overall pad thickness
bendix ultimate 14mm
repco/ferodo 13mm

so my questions are

1. does anyone know what the spec would be for acceptable disc run out? id like to check it before I put the new pads in. if im up for a machine I may as well just buy some aftermarket normal rotors as there wont be much price difference and at least il know the rotors have plenty of meat on them.

2.why are the bendix ultimates 1mm thicker? 2x pads in the caliper, thats 2mm thicker maybe this is making the brakes drag. I have stopped the car when the shudder occurs, jacked it up and spun the wheels and the don't feel like there dragging

 

 

Attachments:
brake pad comparison.jpg
brake pad comparison.jpg [ 269.93 KiB | Viewed 39 times ]
brake pad thickness.jpg
brake pad thickness.jpg [ 178.79 KiB | Viewed 54 times ]
rotors.jpg
rotors.jpg [ 44.64 KiB | Viewed 55 times ]

 

_________________

the road to hell is paved with good intentions.

Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Thu Jan 08, 2015 9:40 pm 
Parts Gopher
Offline
User avatar

Age: 47

Posts: 92

Joined: 8th Apr 2012

Ride: EA Falcon S 30th Anniversary

Location: Brisbane
QLD, Australia

The pad thickness is fine. How do you decrease the cost of a brake pad? Easy, less friction material. Some accountant got a bonus for that....

As for runout I work off a maximum of 0.002 inch approx. 5 mm in from the disc outer edge or the area at the edge where there are no slots. For reference the factory manual specified 0.08mm total runout which is close enough to 0.003 inch.

 

_________________

1991 EA2 Ford Falcon S Sedan
LeMans Red - 30th Anniversary 3.9 MPFI Manual LSD

1996 XH Ford Falcon Outback Ute
LeMans Red 4.0 Auto

Originality saves our history.

Top
 Profile  
 
 
 Post subject: Re: Bendix ultimate pads & rda slotted rotors a bad combination?
Posted: Sat Jan 10, 2015 2:15 pm 
Parts Gopher
Offline
User avatar

Posts: 93

Joined: 1st Oct 2011

Location: sydney
NSW, Australia

Ok folks final update.

I went to repco and tried to get a dial gauge. They didnt have one in stock so i got a can of brake cleaner and went home cleaned the rotors and fitted the repco/forodo pads and im happy to say after 2 days of driving there has been no shudder.


Im very happy now and starting to enjoy eddie the ed again.

Cheers folks!

 

_________________

the road to hell is paved with good intentions.

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 2 of 3  [ 32 posts ]  Go to page Previous  1, 2, 3  Next

Who is online

Users browsing this forum: Google [Bot] and 20 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum
cron

 

 

It is currently Tue Dec 12, 2017 11:23 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names