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Old 03-04-2008, 11:11 AM   #136
SOLO LOBO OP
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Here is a shot of the 6-piston on my old GS, along with a line that was shorter than the one that I used on the 4-piston... 46" line from eBay.. seems to be a bunch of extra there.... Oh, and on the GSPD parts fiche, there is a special little brake line holder that bolts to the stock fork brace that I added.

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Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.
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Old 03-04-2008, 02:24 PM   #137
Readymeal
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Quote:
Originally Posted by SOLO LOBO
Here is a shot of the 6-piston on my old GS, along with a line that was shorter than the one that I used on the 4-piston... 46" line from eBay.. seems to be a bunch of extra there.... Oh, and on the GSPD parts fiche, there is a special little brake line holder that bolts to the stock fork brace that I added.

Hi there,

first of all thx all for your testing and sharing.
I ve been reading this very interesting thread...

Can you give more detail about the 2 different 6 piston calipers you are using?

Nissin from a ZX9R (which year?)

Takico from which bike?

thx

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Old 03-04-2008, 03:03 PM   #138
SOLO LOBO OP
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Quote:
Originally Posted by Readymeal
Can you give more detail about the 2 different 6 piston calipers you are using?
4-piston Nissin GSXR (exact years listed in the first few posts)
6-piston Tokico Hayabusa
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Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.
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Old 03-04-2008, 03:55 PM   #139
Zebedee
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Quote:
Originally Posted by datchew
I'm dying to know if you really needed the 46" hose or if you have an armlength of extra coiled up in the handlebars somewhere.

I've assembled and measured 5 times on my 89 GS and even with the acerbis rally pro guards and the steel transfer brakeline removed, I can't come up with measurements showing that I need anything more than 37" of brakeline.
Thanks for that dat, I was beginning to question the measurements that I'd taken too.

I'm sure I measured a 39" brake line on SteveNZ's bike.

Also with ref to Solo's comments about the bleeding.

I'm surprised no one's mentioned the trick of filling the system by your preferred method*, but then using a bungy chord to clamp the brake on overnight. The theory being that with the brake "on" the remaining bubbles are compressed and can let gravity take its course more easily.

Obviously the system requires bleeding again after the overnight bungy, and the rubber mallet is going to help too, but it might speed things up slightly

Have a good 'un

John

* Fill a large syringe with fluid, and attach syringe to bleed nipple and fill from the lowest point on the system.
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Old 03-04-2008, 05:29 PM   #140
johno
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Had another go at bleeding the brake this morning, and within a half hour, was on the bike going for a test ride.
Definately better than stock. Obviously not as good as my R1150R was.
Not sure how everyone is measuring there hoses, but mine is 46", and I would say perfect.
Wouldnt want any shorter.

See Scotty, I didnt let the team down.
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Old 03-04-2008, 09:20 PM   #141
datchew
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Quote:
Originally Posted by Zebedee

* Fill a large syringe with fluid, and attach syringe to bleed nipple and fill from the lowest point on the system.

FYI, if you have a tractor supply or something like that, syringes of all sizes with mL's on them are approximately $1.00 each and a small piece of plastic tubing (fit them on in the store) screws (yes, I said SCREWS) right onto them.

It was my solution to super cheap measurements for the fork oil but now that you mention this, i'll be doing the brakes with it as well. Oh man, SOLO, you're in danger of losing your title as the Old Skool Cheapest Bastard.
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Old 03-05-2008, 12:35 AM   #142
The Cougar
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Quote:
Originally Posted by johno
Had another go at bleeding the brake this morning, and within a half hour, was on the bike going for a test ride.
Definately better than stock. Obviously not as good as my R1150R was.
Not sure how everyone is measuring there hoses, but mine is 46", and I would say perfect.
Wouldnt want any shorter.

See Scotty, I didnt let the team down.
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Old 03-05-2008, 11:12 AM   #143
euromotorcycles
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Better Brakes For The Gspd

Here is my solution for better brakes.

-Double floating BMW discs.
-2 x BMW 4 piston calipers with special custom brackets.
-2 x steel braided brake lines.
-#15 BMW Mystique master cylinder.
-Upgraded front end (Showa 49 mm modified fully adjustable competiton
offroad forks with triple clamps to match the GS specs).
-Modifications to the stock front wheel hub.


The end result gives outstanding braking power and the front forks are a real added bonus.
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Old 03-05-2008, 01:47 PM   #144
euromotorcycles
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Better brakes for the GSPD

Another photo with a closer view of the caliper setup.
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Old 03-05-2008, 05:18 PM   #145
johno
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Great setup. Cost??
What we are doing is a budget upgrade, not a bank draining one.
Certainly a dual disc setup is going to be much better, but cost can be the issue that a lot of us have.

Great job anyway.
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Old 03-05-2008, 09:33 PM   #146
Beemerboff
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I got a complete K bike Showa front end , including wheel and twin disks , calipers, a rear new front tire, guard etc for $175- on Ebay.

Locally so I could see the bike and bits before I bid.

However , when my master cylinder started leaking I had it resleved to 11mm , and when my brake shoes wore out I replacedthem with HH sintered pads , and at no additional cost I CAN NOW LOCK UP THE FRONT WHEEL , AND I DONT NEED MUCH MORE THAN THAT.
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Old 03-05-2008, 11:21 PM   #147
Steve in NZ
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dring dring

Hey Zeb. where ya hanging out now and what ya doin. Did ya sell the pig.

I forgot to mention the $10 fee for doing this conversion payable to Baldy for letting him post all this stuff on his site. Solo. since u upgraded its twice its $15.

Anyone that wants to see what NZ looks like we got our own section now so we don't have to put up with those whining ex-poms called Ozfailunes. in the regions area.

and the whole point of this upgrade for me was so I could stop a bit better but not get chucked off the bloody thing if i grabbed a handful in the gravel. Now had it on the bike for 8 years and still not gone thru a set of pads, but then I always was a tight bastard using the brakes, don't like using all that power to run the brake light. just read the road and cruise along. Must admit the gearbox gets a hard time though.
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Old 03-06-2008, 03:46 AM   #148
johno
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Did 35klms today, and the brake just seems to be getting better all the time. (back shocker out to lunch, so dont want to do too much)
Still running the old pads that came in the caliper.

Steve, I think you are correct. Too much brake could cause trouble, but that comes down to the rider as well.
I use the engine braking mostly, as I am not an agressive rider.
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Old 03-06-2008, 04:37 AM   #149
Beemerboff
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Johno, I have a good OEM back shock which I dont want a lot for . PM me if you are interested.

It has been rebuilt and was a lot better than the one which was on the bike when bought it.

I have a Ohlins now , bought on German Ebay and a step up in class but not a "riding a different bike" experience some folks find.

The guy removed it to fit a White Power which he thought was much better, but he had 6mm preload on the spring and 6 clicks of damping from min so it was never going to work that way.

Ive got 15 mm preload and 10 clicks from min. I preferred the oem shock with min preload and the damper two down from max - exactly the opposite to the PO.

Motohansa are doing White Power shocks for $980.00 , and matcing springs for another $200- whiich sounds a good way to go if you want to spend some cash .
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Old 03-06-2008, 06:52 AM   #150
Foot dragger
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All right,Ive got a bonified antique. A 1976 R75/6 that I plan on ripping around on a fair amount and I wonder how this type of caliper could be co-erced into mounting up and actually providing some stopping power,the previous owner hit a truck on the bike due to no brakes and not much experience. Its just a matter of some new upper fork tubes and triple clamps,maybe a frame and I'll be on the road. I appreciate all the info on this thread and I do have a local mad machinist that I will be consulting with.Thanks for the ideas.
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