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vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#990977
well I like the look of the finned calipers, silver caliper, gloss black anchor plate and nice DBA asymmetric slotted T2 rotors 👍

Its got its own thing going compared to the usual brembo Porsche calipers.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#990978
mmmmmm!

😵



71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

Aussie Dubbin Fahrvergnugen

895 posts · joined Jul 2008 ·

#990982
I'll chime in.
Great to see the commodore discs bolted to a standard part. Has anyone put the commodore hubs and calipers on a bj beetle without massive mods.
I met a guy at a show who suggested BMW hubs would fit onto beetle bj but never asked him to explain further
'68 BUG build(Racing)
http://forums.aussieveedubbers.com/viewtopic.php?tid=85509
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http://forums.aussieveedubbers.com/viewtopic.php?tid=88798
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http://forums.aussieveedubbers.com/viewtopic.php?tid=88799&page=1#pid826884

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 ·

#991025
vlad01 wrote:
psimitar wrote:
vlad01 wrote:well I suppose there shouldn't be much fade on a bug with bigger brakes, not much weight to stop.

stock brakes on a type 3 certainly fade fast. heavy bastard with pissy little brakes lol.

reminds me of the time my squareback's front pads caught on fire haha, burnt off all the paint on the center of the rims too. 🙄
Tis why T3 rears on a bug is a good upgrade 🙂
yeah I hear about this, I sold a few type 3 brakes to bug owners.

I am not sure how much better it would be, I always found upgrading the front makes nearly all of the braking performance increase, while the back is marginally noticeable when upgraded. This is on type 3 and other cars besides vw that I upgraded brakes on.

I never owned a bug so I can't say.
madness is in the eye of the beholder 👍

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#991056
Aussie Dubbin wrote:I'll chime in.
Great to see the commodore discs bolted to a standard part. Has anyone put the commodore hubs and calipers on a bj beetle without massive mods.
I met a guy at a show who suggested BMW hubs would fit onto beetle bj but never asked him to explain further
umm as for hubs, best bet would be to get a complete kit from Glenn aka "VWCOOL"

he makes front kits based on commodore caliper, AU falcon front disks, billet adapter brackets, billet hub that use standard VW bearing and the PCD is your choice

This is what I have, its the best bit of brake kit out there in terms of proper engineering, and standard parts to boot!

according to Smiley, commodore hubs fit the vw thing spindles?

From there I can't say how you go about attaching the calipers.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

Subarugears Officially Full-On Dubber

236 posts · joined Dec 2011 ·

#991077
The Subaru rear disc brake conversion onto Type 1 trailing setups that Vlad is referring to has been developed and tested.
We have tried both the vented rear disc/2 pot WRX caliper, and the solid rear disc/single pot floating caliper.
With our soon-to-be-released kit basically any Subaru rear brake setup can be fitted onto any type 1 style setup.
You can use Impreza, Forester, Liberty, Outback, Tribeca, WRX, STi - whatever.
And the handbrake works. Properly.

I have redesigned my initial hub design, which could only provide 5x100, to now provide 5x100, 5x114.3, 4x130, 5x130 - all on the same hub.

I will have a sneak preview of this setup at the VW Nationals next Sunday 25th May so please come along to the Subarugears/Subabrakes stand and take a look.

p.s. I think I've got it solved for Bay window Kombis and Vanagons too, so it looks like we've got the whole range covered.

cnfabo Custom Title Time!

1,353 posts · joined Apr 2008 ·

#991103
Subarugears wrote:The Subaru rear disc brake conversion onto Type 1 trailing setups that Vlad is referring to has been developed and tested.
We have tried both the vented rear disc/2 pot WRX caliper, and the solid rear disc/single pot floating caliper.
With our soon-to-be-released kit basically any Subaru rear brake setup can be fitted onto any type 1 style setup.
You can use Impreza, Forester, Liberty, Outback, Tribeca, WRX, STi - whatever.
And the handbrake works. Properly.

I have redesigned my initial hub design, which could only provide 5x100, to now provide 5x100, 5x114.3, 4x130, 5x130 - all on the same hub.

I will have a sneak preview of this setup at the VW Nationals next Sunday 25th May so please come along to the Subarugears/Subabrakes stand and take a look.

p.s. I think I've got it solved for Bay window Kombis and Vanagons too, so it looks like we've got the whole range covered.
Do u have a price on the kits at the moment or still working on this..

Fabo...

Subarugears Officially Full-On Dubber

236 posts · joined Dec 2011 ·

#991120
No firm price yet until everything is in stock and the kits are released.
Am working on the cost prices of everything so that it stays as reasonable as possible.

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#991125
Subarugears wrote:The Subaru rear disc brake conversion onto Type 1 trailing setups that Vlad is referring to has been developed and tested.
We have tried both the vented rear disc/2 pot WRX caliper, and the solid rear disc/single pot floating caliper.
With our soon-to-be-released kit basically any Subaru rear brake setup can be fitted onto any type 1 style setup.
You can use Impreza, Forester, Liberty, Outback, Tribeca, WRX, STi - whatever.
And the handbrake works. Properly.

I have redesigned my initial hub design, which could only provide 5x100, to now provide 5x100, 5x114.3, 4x130, 5x130 - all on the same hub.

I will have a sneak preview of this setup at the VW Nationals next Sunday 25th May so please come along to the Subarugears/Subabrakes stand and take a look.

p.s. I think I've got it solved for Bay window Kombis and Vanagons too, so it looks like we've got the whole range covered.
I'll take my order for a rear kit soon as you reveal them for sale.

i don't feel that the skyline caliper is a good solution for the handbrake so I held off from running them.

what size piston do the 2 types of caliper use?

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

Subarugears Officially Full-On Dubber

236 posts · joined Dec 2011 ·

#991162
Vlad, I'll see you on Sunday at the Nationals with your vernier calipers.....won't I ?

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 ·

#991167
Subarugears wrote:No firm price yet until everything is in stock and the kits are released.
Am working on the cost prices of everything so that it stays as reasonable as possible.
Do we need engineering certs to fit these?
Does it come with paperwork?

Chris.
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

Subarugears Officially Full-On Dubber

236 posts · joined Dec 2011 ·

#991201
bajachris88 wrote:
Subarugears wrote:No firm price yet until everything is in stock and the kits are released.
Am working on the cost prices of everything so that it stays as reasonable as possible.
Do we need engineering certs to fit these?
Does it come with paperwork?

Chris.
Hi Chris,
I discussed these rear brake kits with a NSW registered engineer when I was developing them.

He was very happy with the way they were being developed, particularly as most of the parts used are OEM. His statement to me was that any brakes cannot be 'approved alone' i.e. approved as an item that can just be bolted onto any car. Any car fitted with different brakes must have an engineer inspect those brakes and their effect on the overall braking system. The brakes can then be 'approved' for use on that car.

I will certainly be looking to make some sets available for different cars/setups in Australia that are prepared to have an engineer inspect and sign off on them. Once the first ones are done, it should be an easier road for those that follow.

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#991225
Subarugears wrote:Vlad, I'll see you on Sunday at the Nationals with your vernier calipers.....won't I ?
So you don't know off the top of your head?

I just wanted to know so I can determin how much the front/rear bias will change if any.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

Subarugears Officially Full-On Dubber

236 posts · joined Dec 2011 ·

#991256
Nope I don't know off the top of my head. 38.1mm via google.
Now Vlad - does the 2 piston version change the brake bias more than the 1 piston floating caliper version, given the piston size is equal? 🤪

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#991262
Subarugears wrote:Nope I don't know off the top of my head. 38.1mm via google.
Now Vlad - does the 2 piston version change the brake bias more than the 1 piston floating caliper version, given the piston size is equal? 🤪
its shouldn't if the pads are equal and piston combined area2 is the same between the 2 styles, thats disregarding disk size.

Generally speaking the floating type have bigger pads for the same area2 piston compared to twin opposing piston type coz they have 2 smaller piston rahter than 1 big one. I don't know if that is always the case though but has been with all the ATE and PBR calipers I dealt with.

38mm? sounds about the same as the skyline ones, i'll measure them when i get back from Sydney.



EDIT: google suggests the skyline ones are 38.1mm too.

Sweet!🤓

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#991264
On 2nd thoughts does the force of 2 opposing pistons cancel out giving net force of one? Something gives me the feeling that might be the case?

ahh my brain hurts 🥲

EDIT:

makes sence now. So its the same for 2 x area opposing= 1 x area floating. Or same piston diameter in opposing the same as single floating. Yes??


71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 ·

#991270
vlad01 wrote:On 2nd thoughts does the force of 2 opposing pistons cancel out giving net force of one? Something gives me the feeling that might be the case?

ahh my brain hurts 🥲

EDIT:

makes sence now. So its the same for 2 x area opposing= 1 x area floating. Or same piston diameter in opposing the same as single floating. Yes??
I can't see how leverage comes into it.
Just think pressure. Double the area, half the pressure (IE: 2 pistons), but... because the pressure is in the same direction of applicable (towards disk), it becomes 'x 2', which is same pressure as single.

Friction is proportional to pressure, so it will be the same friction as a single piston because dual piston will be the same 'net' pressure (Force over area).
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 ·

#991273
Hydraulics is pretty straight forward in it's basic form.

Let's start at the master cylinder. Say the surface area of the piston is 20mm2 and you apply 100pounds of force. That force is distributed over the piston area so you get 5pounds per mm2.

Now at the caliper or wheel cylinder if you say you have a 50mm2 area piston then the output force is 50x5=250pounds of force.

but as the equation must be equal on both sides then the travel of the MC piston is divided my the percentage increase of the MC piston to the caliper piston so that the caliper piston will move that percentage less then the MC piston.

Doesn't matter how many psitons a caliper has as the input force just distributes itself across them and depending on the pistons surface areas will give an output force.

The reason why multipiston calipers are used is because it gives better pressure distribution over the brake pad and more even pressure as that 5 or 6mm steel backing pad of the brake pad does bend and hence on a single caliper piston the ends of the pad will have less pressure being applied to them and that leads to thermal overload in the middle of the pad under heavy braking. Constistent pressure across the entire pad helps give better pedal 'feel' and even heat build up.
madness is in the eye of the beholder 👍

Subarugears Officially Full-On Dubber

236 posts · joined Dec 2011 ·

#991275
I thought that question might intrigue you and offer some interesting answers. 😂
As above - the dual piston basically offers the same pressure as the single piston floating caliper (all things being equalish) but is a bit nicer across the pad.

In the Subaru setups the pads and rotors on the back are pretty much all the same size (except Brembos of course).
The WRX 2 piston rear setups have the sweetness of a vented disc though.

I almost have it sussed for Bay Kombi/Vanagon/Syncro trailing arms too.