[Fot] knockoff Datsun brake drums

[John Styduhar]

​I use stock TR rear brake shoes with my OEM datsun Z drums and had no
cracking problem in two seasons of racing.  But since I upgraded to the 7/8
inch bore rear wheel cylinders this year, I have a lot more rear brake and
now see bluish spots around inside of the lining probably from overheating.
​ Way more brake dust in the drums now.


On Mon, Jun 26, 2017 at 10:08 AM, Spitfire Racing via Fot <
fot at autox.team.net> wrote:

> Depending on the friction coefficient of the brake shoe material and
> velocity/pressure there would be varied levels of heat generation. It
> appears heat is the causative failure component. Testing would be the only
> accurate way to tell. I no longer have access to the engineering labs at
> Cornell or we could get some numbers to compare using various compounds and
> speed simulations.
>
> Russ Moore
> Spitfire #49
>
> -----Original Message-----
> From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of Mordy Dunst via
> Fot
> Sent: Monday, June 26, 2017 9:22 AM
> To: fot at autox.team.net
> Subject: Re: [Fot] knockoff Datsun brake drums
>
> Would the brake shoe compound have an influence on the drum longevity?
>
> MDunst Headgasket.com 626.358.1616
> Fax 626.628.3777
> Triple R Munitions, Inc 626.201.9471
> T FFL 6,7 SOT 2
>
> On Monday, June 26, 2017, Yellow04 via Fot <fot at autox.team.net> wrote:
>
> My take-away is the Centric aftermarket drums are not up to the task on my
> car. I have yet to weigh my TR250, but I'm confident despite best efforts
> the car is not a lightweight. Neither is the driver! While the aftermarket
> drums are working for some, I'm not going down that road again.
>
> I appreciate everybody's comments, and hope everybody continues to look
> closely at their drums (especially the aftermarket ones) while going
> through
> their pre-race rituals!
>
> Cheers
>
> Henry Frye
>
> > -----Original Message-----
> > From: Greg Solow
> > Subject: knockoff Datsun brake drums
> >
> > I believe that the drums that The Z store sells are "Centric" Brand.
> > We use many of their products in out shop and find that they are
> > excellent quality. I am currently using a pair of their drums on the
> > rear of my Morgan. I have scoops with cooling duct leading into the
> > backing plates and additional exit ventilation holes in the backing
> > plates. So far I have had no problems with serious cracks int he drum
> liners.
> >
> >
>
>
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