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Old 11-21-2007, 10:04 AM   #91
SOLO LOBO OP
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Quote:
Originally Posted by SOLO LOBO
The one that I have coming is from a 1999 Kawasaki ZX9

It has arrived... and low and behold, the Hayabusa 6 piston Nissin caliper looks to have the exact same mounting arrangement as my current four-piston Nissin, so my adapter should work...

More later after I get the front end of my bike back together and I can mount this one up
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Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.

SOLO LOBO screwed with this post 03-07-2008 at 10:16 AM
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Old 11-21-2007, 11:54 AM   #92
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Old 11-22-2007, 03:34 AM   #93
Wirespokes
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Mine showed up but haven't held it up against the GS fork leg yet. I did check to see if the other side would work on the 80G/S and sadly, it doesn't look like it. Guess I could modify a spare slider so I could have dual six-piston-calipers. That ougta haul me down from triple digits with several left over.
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Old 11-30-2007, 10:05 AM   #94
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So, I happen to have a Nissin 4 piston and a Tokico 6-Piston... I would bet dollars to doughnuts that they are identical, and will try to remember to take a few measurements this weekend.

What this means is that almost any japanese bike wearing non-raidal 6-piston calipers would be a suitable donor for this conversion using the adapter that the pdf describes...
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Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.

SOLO LOBO screwed with this post 03-04-2008 at 11:10 AM
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Old 11-30-2007, 11:25 AM   #95
datchew
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Quote:
Originally Posted by SOLO LOBO
So, I happen to have a Nissin 6 piston and a Tokico 6-Piston... I would bet dollars to doughnuts that they are identical, and will try to remember to take a few measurements this weekend.

What this means is that almost any japanese bike wearing non-raidal 6-piston calipers would be a suitable donor for this conversion using the adapter that the pdf describes...

That is a seriously significant finding. +50 adv points.
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Old 11-30-2007, 11:28 AM   #96
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and I guess this means you haven't put it on the bike yet, huh?
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Old 11-30-2007, 11:44 AM   #97
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Quote:
Originally Posted by datchew
and I guess this means you haven't put it on the bike yet, huh?
duh.... haven't you tuned into my steeringhead bearings thread? still waiting for a part to put it all back together!
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Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.
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Old 11-30-2007, 01:23 PM   #98
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you mean I'm supposed to actually read up on things before I throw out a stupid question?


jeez... this place is getting as tough as a real job!
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Old 12-01-2007, 03:10 AM   #99
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I'm curious about making a mount for a radial caliper. Anyone done that?
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Old 12-01-2007, 08:35 AM   #100
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Quote:
Originally Posted by tvrla
I'm curious about making a mount for a radial caliper. Anyone done that?
Please allow me a dumb question: wats radial caliper? compared to a non-radial one i mean-

thanks-
J
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Old 12-01-2007, 01:18 PM   #101
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Quote:
Originally Posted by Stagehand
... wats radial caliper?
With conventional calipers the mounting bolts are parallel to the axle, but with radial calipers the mounting bolts are at right angles to the axle ie radial ... click the pic for the story.



vs



They are all the rage on the super sport rice rockets, where the difference between two and three finger rolling stoppies makes all the difference in the sales pitches.

I'm assuming tvrla was having a bit of a joke with us, because the idea behind the radial calipers is to reduce the gyroscopic forces by reducing the rotor diameter. If you've got a 21 front wheel, it's generally because the gyroscopic forces are advantageous.

Cheers

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Old 12-01-2007, 04:44 PM   #102
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thanks Z! good answer.
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Old 12-02-2007, 06:02 AM   #103
Wirespokes
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Thanks for the info, John! Actually, I know very little about radial calipers; I'm stuck in a time warp with these stone age beemers. Any joke was purely accidental. I'd just seen them on ebay while watching for a six piston tokico.

Perhaps you could go into this in more detail: How would a radial caliper allow a smaller disc? Since we have fairly small diameter discs on these ancient bikes why wouldn't a radial be a good idea?
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Old 12-02-2007, 06:16 AM   #104
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Sorry to jump in, but the article has a pretty good description. (Firts pic is a link)

radial mounting effictively is a more efficient configuration, allowing a smaller disc size for the same braking. Hold down bolts act in compression and tension rather than shear in an axial config- (not that thats the ultimate reason but a good one)

my thought is I think you would lose the radail efficiency modifiying an axial mount, but I'm possibly misunderstanding the concept.
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Old 12-02-2007, 06:49 AM   #105
Wirespokes
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Thanks Stage - I forgot to read that article before posting and it did answer the question about smaller rotors. But I still don't see why I couldn't adapt a radial to a GS. I think it would be a much cleaner and prettier mount than what we have to do for the axially mounted calipers.
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