[Roadsters] Rear Brake Swap

[Ronnie Day]

I'd suggest verifying the line fitting threads on anything you substitute.
IIRC, those threads on the OE Roadster brake components were SAE while
those on the 510, Z, etc. were metric. You might need adapters or new hard
lines with the correct fittings.

FWIW,
Ron

On Thu, Sep 3, 2015 at 3:24 PM, RWM via Datsun-roadsters <
datsun-roadsters at autox.team.net> wrote:

> Anyone have experience with or know of a compatible/interchangeable 7/8"
> or 15/16" rear wheel cylinder?
>
> Looking for more rear brake bias, and based on prior notes, the 13/16"
> doesn't seem to move the meter.
>
> Thanks.
>
> -  Bob Mann, '68 2000 Solex
>
>
>
> On 8/31/2015 8:34 PM, Pete via Datsun-roadsters wrote:
>
> 15/16 is what the all drum 1500 and 410/411 use.
>
> They also have two 1-inch wheel cylinders per front wheel.
>
> Me likey disc brake mo bettah!
>
> Pete
> *From: *RWM via Datsun-roadsters
> *Sent: *Monday, August 31, 2015 4:49 PM
> *To: *Roy Haslett; Datsun Roadster Listserver
> *Reply To: *RWM
> *Subject: *Re: [Roadsters] Rear Brake Swap
>
> That seems to be the design point.
>
> I wonder what happens if you go to 7/8" or 15/16" cylinders?
>
>
> On 8/31/2015 7:37 PM, Roy Haslett wrote:
>
> If I really stand on the brakes I will get the back to lock up, but this
> is with a close adjustment, and I did not want drag on the rear so I backed
> it off a bit.  I think that the fronts are still doing 70% + of the
> stopping.
>
> ------------------------------
> *From:* RWM <RWM at RWMann.com> <RWM at RWMann.com>
> *To:* Roy Haslett <hrhaslett at yahoo.com> <hrhaslett at yahoo.com>; Datsun
> Roadster Listserver <datsun-roadsters at autox.team.net>
> <datsun-roadsters at autox.team.net>
> *Sent:* Monday, August 31, 2015 4:23 PM
> *Subject:* Re: [Roadsters] Rear Brake Swap
>
> Thanks, Roy.
>
> With the 13/16" cylinders, can you get the rears to lock up before the
> fronts? Or a rearward brake bias?
>
> - Bob
>
>
>
>
>
> On 8/31/2015 7:13 PM, Roy Haslett wrote:
>
> Did not notice any difference, however, the brakes weren't really
> functioning very well.  All 13/16 now.
>
> ------------------------------
> *From:* RWM <RWM at RWMann.com> <RWM at RWMann.com>
> *To:* Roy Haslett <hrhaslett at yahoo.com> <hrhaslett at yahoo.com>; Datsun
> Roadster Listserver <datsun-roadsters at autox.team.net>
> <datsun-roadsters at autox.team.net>
> *Sent:* Monday, August 31, 2015 11:41 AM
> *Subject:* Re: [Roadsters] Rear Brake Swap
>
> Roy,
>
> I gather you didn't notice the asymmetry until the rebuild?
>
> Did you go all 3/4 or all 13/16?
>
> Any apparent difference once changed?
>
> - Bob
>
>
>
>
>
> On 8/31/2015 2:34 PM, Roy Haslett wrote:
>
> I actually have a 67 1600 and when I went to rebuild my rear cylinders I
> discovered I had a 3/4 on one wheel and a 13/16 on the other.  13/16 is
> stock and now hard to find and expensive, but I tend to follow what was
> originally engineered and designed for the car.
>
> ------------------------------
> *From:* RWM via Datsun-roadsters <datsun-roadsters at autox.team.net>
> <datsun-roadsters at autox.team.net>
> *To:* Datsun Roadster Listserver <datsun-roadsters at autox.team.net>
> <datsun-roadsters at autox.team.net>
> *Sent:* Sunday, August 30, 2015 3:14 PM
> *Subject:* Re: [Roadsters] Rear Brake Swap
>
> Any update to this vintage 1999 thread?
>
> http://www.team.net/html/datsun-roadsters/1999-11/msg00700.html
>
> Are there functional, plug-and-play substitutions for the late roadster
> 3/4" rear wheel cylinders from other period Datsun brake parts?
>
> Such as rear wheel cylinders from the 1200, B210, 510, 617, 710?
>
> Did the debate over how to get more braking action at the rear (by using
> either 11/16 or 13/16 cylinders) ever conclude?
>
> Thanks.
>
> - Bob Mann, '68 2000 Solex
>
>
>
>
>
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> --
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