Author Topic: Replica brake master any good?  (Read 4367 times)

Offline ST1100

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Replica brake master any good?
« on: December 19, 2015, 12:26:59 AM »
Didn't know where to post this, as the item fits several models/displacements...

This replica master cylinder assy is offered almost everywhere:
http://www.ebay.at/itm/291240553549?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

DS and CMS carry an even cheaper one (note the difference with the lever bushing plate on the underside)
http://www.davidsilverspares.co.uk/parts/by-part-number/partnumber_45500300000P/

Knowledgeable purists will instantly spot that its not genuine/OEM due the grooves on the reservoir casing...
Still, originals are not avail, the ones coming on the bikes (at least on mine) are in really bad shape...

How big is the vaux pas when using this replica on a project?
How good is the fitment on the bike (like is the handle in a weird angle)?
Will an OEM Honda rebuild kit fit in the future?

TIA
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'00 ST1100Y, '04 ST1100R, '07 NT700VA, CB500K2, CB500K1...

Offline UK Pete

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Re: Replica brake master any good?
« Reply #1 on: December 19, 2015, 10:16:23 AM »
good questions , i wonder if anyone has used one, if a honda kit fitted they would certainly be useful, but i personally prefer a secondhand honda one , there are hundreds on ebay

Offline ST1100

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Re: Replica brake master any good?
« Reply #2 on: December 19, 2015, 11:09:13 AM »
...there are hundreds on ebay...
Well...

- threads for mirror peg knackered
- supports for lever pivot worn, bend, or even broken...
- bits of metal shaved off (crashed, bike sliding down the road...)
- casing seriously bleached
- all bolts badly corroded
- bar mounts/encirclement deformed (again crashed, handlebar bend...)

so basically what I already have on the bike, and I haven't even seen/inspected the inside/bore yet  ;)

And then there is the argument of "originality vs safety"...
One simply wants to avoid the "your brain freezes time" moment, watching parts exploding off in super-slow motion while grabbing the stopper, aiming for the safety rail in the turn-entrance there...  ;)

But also I rather lean on OEM as the desired way to go; fitments, alloys used and overall MFG quality are simply superior...

Just "nailed" a used Honda for € 46,-... hope I'm lucky having picked a decent one...
STOC #637
'00 ST1100Y, '04 ST1100R, '07 NT700VA, CB500K2, CB500K1...

Offline Johnwebley

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Re: Replica brake master any good?
« Reply #3 on: December 19, 2015, 11:23:23 AM »
I fitted a replica front brake master cylinder from DSS

 works perfectly,looks 100% original,

if you were flying a spitfire,would you want old parts,or 100% new made ones ??
lifelong motorcycle rider,and fan

Offline ST1100

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Re: Replica brake master any good?
« Reply #4 on: December 19, 2015, 01:22:40 PM »
...or 100% new made ones ??
uhm... define newly made... [Made In China] embossed on them will create a discussion...  ;)

The currently at DS offered master does not have the milky white reservoir tank, so how to check fluid level w/out removing the cap...
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'00 ST1100Y, '04 ST1100R, '07 NT700VA, CB500K2, CB500K1...

Online JamesH

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Re: Replica brake master any good?
« Reply #5 on: December 19, 2015, 01:36:28 PM »
I've used the DSS part on several projects and functionally they are excellent. Cosmetic finish is not particularly close to honda OEM but for the price, great value IMHO. James

Offline Chris400F

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Re: Replica brake master any good?
« Reply #6 on: December 19, 2015, 02:06:58 PM »
I rebuilt my M/C with a pattern rebuild kit from DSS.
I don't know whether the same company makes the kits and replacement cylinders but logically they would use the same components for both if that was the case.
Not that I think I would be planning a rebuild if I was buying a new pattern part, hopefully it would last a good few years.

As for the milky white reservoir tank, did any Honda models of this era have these as original fitment?
I don't know when this type of reservoir was first fitted.

Offline ST1100

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Re: Replica brake master any good?
« Reply #7 on: December 19, 2015, 09:11:16 PM »
As for the milky white reservoir tank, did any Honda models of this era have these as original fitment?
I don't know when this type of reservoir was first fitted.
I too would be interested in this, as I found both types on the vintage SOHCs...
The '76 K2 I'm currently working on has a full/solid aluminium reservoir, the whole thing anodized in gun silver...
The '72 K1(?) aside it has an early aftermarket, with a white tank insert...
And the other K2 (just frame, front end, wheels and engine) again has a genuine looking 2-piece brake master, in gun metal with the milky white tank...
STOC #637
'00 ST1100Y, '04 ST1100R, '07 NT700VA, CB500K2, CB500K1...

Offline Bryanj

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Re: Replica brake master any good?
« Reply #8 on: December 19, 2015, 10:14:45 PM »
All masters I know of were originally black but faded to silver and the first see through reservoir was on the GL1000 and F2 I think

Offline ST1100

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Re: Replica brake master any good?
« Reply #9 on: December 20, 2015, 12:23:11 PM »
And the other K2 (just frame, front end, wheels and engine) again has a genuine looking 2-piece brake master, in gun metal with the milky white tank...
Dug a bit further and I think that the 2-piece design is from the late 550ies (K3 on), can anyone please confirm or correct this?
STOC #637
'00 ST1100Y, '04 ST1100R, '07 NT700VA, CB500K2, CB500K1...

Offline hairygit

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Re: Replica brake master any good?
« Reply #10 on: December 20, 2015, 01:20:35 PM »
And the other K2 (just frame, front end, wheels and engine) again has a genuine looking 2-piece brake master, in gun metal with the milky white tank...
Dug a bit further and I think that the 2-piece design is from the late 550ies (K3 on), can anyone please confirm or correct this?
On VERY early 750 supersport as the yanks got, later referred to as the F0 model, the rear master cylinder has a detachable fluid reservoir that is milky white, it seems they changed to a one piece casting by the time it was released in Europe as the F1. Even the Haynes manual mentions it. But, that was only for very early ones, and obviously changed very early in production run.
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Offline flatfour

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Re: Replica brake master any good?
« Reply #11 on: December 20, 2015, 07:54:43 PM »
My CB750 has the DSS pattern master cylinder fitted and my CB500 the original part. Both work well enough, although the brake on the 750 (with the pattern part) has always been firmer at the lever, in comparison the 500 brake feels a little spongy.

As fluid changes, bleeding etc. have made no difference to the feel of either brake, I have put it down to either differences in the two systems, or master cylinder piston size on the aftermarket part. Neither bike has ever had an issue with brake performance at MOT test.

I personally prefer the feel of the CB750 brake with the pattern master cylinder!

Offline ST1100

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Re: Replica brake master any good?
« Reply #12 on: December 20, 2015, 08:00:34 PM »
Possible that the pattern part from DS is indeed also compatible with a twin disk setup?
Some sellers out there claim that from their replica set...
Always wondered as I figured I'd need a GL1000 master for twin disk, or one from a "modern" bike... 
STOC #637
'00 ST1100Y, '04 ST1100R, '07 NT700VA, CB500K2, CB500K1...

Offline Johnwebley

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Re: Replica brake master any good?
« Reply #13 on: December 20, 2015, 08:39:29 PM »
when I fitted a twin disc,I used a goldwing GL1000/1100 master cylinder.

 looks identical to the single disc unit
lifelong motorcycle rider,and fan

 

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