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Rear discs with internal drum handbrake?

Posted: 09 Sep 2017 02:37
by broke
As stated, has anyone managed to come up with a rear disc conversion that uses an internal drum parking brake?

I have setup off a C32 Laurel that looks like it could almost work, but may require some mods that I'm not too happy about doing to make it all bolt on.

I've searched and couldn't find anything, just thought I'd ask before I go hacking into things...

Re: Rear discs with internal drum handbrake?

Posted: 09 Sep 2017 06:57
by Byron510
I'm sure I've seen a post where someone utilized a Z31 set up like this on a 510, but I can't find the thread which discusses the specifics.

If i find it....

Re: Rear discs with internal drum handbrake?

Posted: 09 Sep 2017 09:12
by JordanTr
I used z32/r32 rear calipers with internal drum ebrake. The r32 setup requires a lot of depth behind wheel mounting flange that just isn't there on a 510 control arm. I ended up making custom control arms that are well documented in my build thread. FFS all the pics are dead.
viewtopic.php?f=3&t=12637&start=420

Minor correction for Byron: none of the North American z31s had internal drum ebrakes. Z32 and r32 did.

Re: Rear discs with internal drum handbrake?

Posted: 09 Sep 2017 14:39
by Byron510
Thanks Jordon for the correction.

:-)

Byron

Re: Rear discs with internal drum handbrake?

Posted: 09 Sep 2017 20:26
by broke
Thanks Jordan, looks like we both tried going down the same road there - another 6-8mm or so and there would be room to slide a caliper mounting bracket between the backing plate and the arm, alas the backs of the wheel studs almost touch the shoes even before you try that.

I think I'm going to end up having to be a sheep and just get R31 Oz-spec rear discs like everyone else here, I really didn't want to have to buy them though when I have a technically superior setup here for nothing.

FWIW here's how far I got - you can see that apart from having nowhere to mount the caliper it all has enough room to fit on the arm, obviously the backing plate hole for the hub is larger and the mounting holes don't line up, but that's not difficult to fix.

Maybe one day I'll experiment with a spare control arm and see if I can brew something up.

Image
Image
Image

Re: Rear discs with internal drum handbrake?

Posted: 09 Sep 2017 21:30
by JordanTr
That looks very familiar. Thanks for sharing pics!

Re: Rear discs with internal drum handbrake?

Posted: 10 Sep 2017 17:39
by datzenmike
Image

Re: Rear discs with internal drum handbrake?

Posted: 11 Sep 2017 04:20
by qwik510
IIRC, Brad had a rear disc setup on his car that used and internal parking brake.

Somewhere in this build thread.

http://the510realm.com/viewtopic.php?f=27&t=5992

Re: Rear discs with internal drum handbrake?

Posted: 11 Sep 2017 04:37
by Three B's Racing
Hey Dave, Vince has this setup on his 510. Ask him what it came off of a quick how to.

Re: Rear discs with internal drum handbrake?

Posted: 11 Sep 2017 05:41
by Byron510
Thanks for posting Brads link to his project. Brads flicker account is still active and visable,many photos of his rear brake upgrade are right at the beginning of the photo series;

https://www.flickr.com/photos/25186022@ ... 62/detail/

This is where I'd seen it documented.

Byron

Re: Rear discs with internal drum handbrake?

Posted: 11 Sep 2017 14:50
by broke
Byron510 wrote:Thanks for posting Brads link to his project. Brads flicker account is still active and visable,many photos of his rear brake upgrade are right at the beginning of the photo series;

https://www.flickr.com/photos/25186022@ ... 62/detail/

This is where I'd seen it documented.

Byron


Thanks guys, I really like the way that conversion's been done - I don't know if the authorities would allow it here, but I'll ask them anyway.

Re: Rear discs with internal drum handbrake?

Posted: 23 Sep 2017 19:24
by torqued
John, Do you have all the bits for this?
If you needed I have them.