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PostPosted: Sun Feb 01, 2004 11:33 pm 
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On another thread ("New CAT Brakes") there is a wide-ranging discussion of C.A.T.-USA brakes.
http://www.cat-usa.com/pages/3/index.htm

In 2004 these brakes are now being distributed and re-branded as Zero Gravity 0G-04 by the manufacturer. Here's a description I received from the manufacturer re: the changes made to C.A.T. Claws:

"...When [we] took distribution in-house, [we] made several changes to the system based on feedback from the previous year. In our opinion, the pads and holders [previously] supplied did not compliment the system. We decided to machine our own pad holder system. The block inserts are KoolStop's Campy 2000 carbon compound. Here are the issues on the cat brake that have been improved:

cat front brake weight..... 108 grams........... Zero Gravity now 98 grams
cat rear.......................... 106 grams..............ZG now 96 grams
cat: small steel cable clamp bolt.....................ZG: titanium
cat: no toe adjustment in the pad holder.......ZG:mating spherical surface
cat: unbalanced spring..................................ZG: balanced spring
cat: steel pad hardware.................................ZG: titanium pad hardware

Please see our website for additional info.
http://www.zerogravitybike.com/index.html

The Cat brake retail was elevated ($380) due to the distributor's mark up. Now that we are handling distribution, [we are] passing a savings on to the consumer ($323)...."

The manufacturer stated that an upgrade kit is available for $55.00 (does not provide the toe-in adjustment, as that's newly machined on the 2004 caliper and the pad holder).

I am not espousing C.A.T or Zero Gravity, just posting the differences from last year to this. The changes do appear to be improvements, re: performance, adjustment, maintenance, weight, and price.

However, the other thread should be reviewed for overall characteristics and performance.

Another reader has advised that the new Shimano 7800 cartridge pads (not the 7700 2003), or else the Kool stop pads, black ones, are the most appropriate for these calipers.

_________________
"Gimondi è un eroe umano, che viene sconfitto ma che continua la sua corsa fino a tornare a vincere." - Enrico Ruggeri


Last edited by cadence90 on Mon Feb 02, 2004 3:13 am, edited 2 times in total.

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 Post subject: CAT(Zero Gravity) Brakes
PostPosted: Mon Feb 02, 2004 2:35 am 
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Very informative post.


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 Post subject: CAT(Zero Gravity) Brakes
Posted: Mon Feb 02, 2004 2:35 am 


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PostPosted: Wed Feb 04, 2004 12:39 am 
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Location: New York City
i did not say the brakes are not better, but half of the changes are to save weight, balanced spring is good, but it does not apply anymore force to the rim, thus not stopping you any better.


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PostPosted: Wed Feb 04, 2004 4:48 am 
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spytech wrote:
i did not say the brakes are not better, but half of the changes are to save weight, balanced spring is good, but it does not apply anymore force to the rim, thus not stopping you any better.


The balanced spring per se may not add force (that's a function of spring+caliper design, which, you're right, did not change significantly) but does affect the synchronization of the caliper movement. One of the problems, as I understand it, of the CATs was that one caliper (pad) would move (brake) first, then the other, so: out of sync, affecting braking function.

P.S. I was watching a pair of CATs on eBay, out of curiousity. They closed today, minus pads/holders, at $300.00! Add $29.00 + $29.00 = $58.00 for Kool Stop holders/pads = $358.00, plus, if desired, $55.00 for CAT to Zero upgrade (which still does not provide toe adjustment) that adds up to $413.00 wow, when the new Zero's complete would be $323.00 (and of course Campy Record +/- $220.00; Cane Creek BRS-200 SL +/- $160.00)

so all you EMPTORS definitely CAVEAT!!!

(and Spytech you list those baby CATs well, with the pads/holders, who knows....you may buy yourself some new Zero's with cash left for those Impact Mag/Ti's, or a couple cases of St. Pauli....)

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"Gimondi è un eroe umano, che viene sconfitto ma che continua la sua corsa fino a tornare a vincere." - Enrico Ruggeri


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PostPosted: Wed Feb 04, 2004 9:45 am 
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Location: Colorado
I watched the same cat's. Some one did not do theie research.

I am going to get a set of the Z.G's for my new TT bike. Won't be used in the Colorado hills, so can't compare with superlite. Will be able to compare to 7700 durace or brew x-lite's, so I will let yawl know :lol:


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 Post subject:
PostPosted: Wed Feb 04, 2004 11:35 am 
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Joined: Tue Jan 06, 2004 6:16 pm
Posts: 28
Location: Nantes, France
Does anybody know if it's possible to find them in France or on a european website (because of the currency) ?

Thanks

8Oken


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 Post subject:
PostPosted: Wed Feb 04, 2004 11:54 am 
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Joined: Mon Jan 12, 2004 12:32 pm
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Location: UK & WEST AFRICA
Go to Poshbikes website and contact Andy Wallis. He brings them in from the States, and posting to France is no big deal. If you pay by credit card it will just get converted to Euros anyway.


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 Post subject:
PostPosted: Wed Feb 04, 2004 3:19 pm 
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Location: fragglerock
slightly off topic but would the ZG brakes be close to the performance of the campag differential brakes?? Theses have single pivot on the rear and dual pivot on the front. ZG are both dual pivot although campag claim that only a single pivot unit is required on the back...

Prices close enough (£150 record calipers) and $330 which is abit more but perhaps worth it for the 100g weight saving however, poor stopping power isn't an attribute most poeple would want.

also, i checked out the cane creek brakes which are single pivot. i also know a few people who ride and sell the FRM calipers.. say they are pretty poor at stopping man and machine.

Any opinions?? campag record calipers are 308g a pair.. i currently have veloce single pivot 345g calipers. could easily lose some weight but wouldn't mind good performance too.

Dooz :mrgreen:

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Dance you cares away, worries for another day, dance your cares away, down at fragglerock.


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PostPosted: Wed Feb 04, 2004 5:06 pm 
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There's another thread (see New Cat Brakes) re: this topic.

I have Campagnolo Record, they're great: easy to adjust, feather control, strong and beautiful. (£150 seems steep, they retail here (US) for $230 and there's a guy in Ireland selling them for $210).

Cane Creek, FRM, and Brew Lite are basically the same brake with minor variations. All work well. I have used the CC, not the FRM, and they're super.

I understand, although there are those who differ, that the force exerted on the CAT's (Zero's are probably the same) deflects the arms, so that the braking force is not as much. Also, adjustability esp. on CATs seems a big concern.

The general consensus here, re: performance to value, not only weight, seems to be:

1. FRM, Cane Creek, and Brew Lite (+/- 250g; +/-$160.)
2. Campagnolo (+/-308g; +/- $225)
2. Shimano (+/- 314g; +/- $225.)
3. Zero (+/- 200g; +/- $323.)
4. CAT (+/- 200g; +/- 380.)

_________________
"Gimondi è un eroe umano, che viene sconfitto ma che continua la sua corsa fino a tornare a vincere." - Enrico Ruggeri


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PostPosted: Wed Feb 04, 2004 7:25 pm 
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Don't forget Mavic SSC on that list. Slightly lighter and cheaper than Campy and stop just as well or better. Only downside is they are not as adjustable as Campy but it hasn't been a problem for me.


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 Post subject:
PostPosted: Thu Feb 05, 2004 4:23 am 
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Joined: Thu Feb 05, 2004 3:53 am
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Location: Athens, GA
Hello all,

Concerning power for Zero Gravity brakes...
When I built the prototype for what is now Zero Gravity road brakes, I initially placed the lobe on the cam-lever 3mm closer to the fulcrum point from where it is now. In that configuration, I managed to crush a dimple in an aluminum rim. There is a trade off in power vs. travel for any caliper system. The limiting factor for power is rooted at the lever on the handle bars. Given a certain amount of stroke from the lever at the handle bars, it is up to the designer to balance that stroke input to the brake for both power and travel. Power may be amplified only with sacrifice of travel of caliper arms. As most of you know, travel is important in racing in that in the event of rim damage you would need the brake open enough that the warped rim does not rub. With the cam system on the ZG brake set, I set the power vs. travel to the optimum parameters for the given stroke at the handle bar based on valuable feedback from many riders.
As with any new product, the first year begs for polish. I have overhauled the brake system for 2004; although power has never been an issue, I am prepared to offer custom cam levers to anyone desiring more of it.


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 Post subject:
PostPosted: Thu Feb 05, 2004 10:46 am 
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Location: New York City
WOW, i think this is great... :shock:

This is the way to win customers. attention to detail, and offering custimizations - great company :wink:

Can i send my cat brakes in for an overhaul :?: :D


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 Post subject:
PostPosted: Thu Feb 05, 2004 2:46 pm 
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Joined: Thu Feb 05, 2004 3:53 am
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Location: Athens, GA
Spytech,

Good question...
I have had many customers want their brakes upgraded to the new hardware, spring nut, and balanced spring. I am offering an upgrade package for $55.00. The package includes titanium hardware and the balanced spring mods. It does not include the new machined pad holders; this is because the ZG arms have a mating spherical surface for the pad holders machined in; this eliminates the need for a spherical washer.

I'm sure this forum wasn't set up to handle this type of business-customer discussion. So please contact me through my website regarding questions that you feel may not benefit others by asking here.

Thanks


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 Post subject:
PostPosted: Thu Feb 05, 2004 4:09 pm 
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Zero,
I asked for your approval prior to starting this thread, and I edited your response to publish the most salient aspects of your response which related to the discussion at hand. I thought that to be sufficient, and that readers could contact you directly through the link. This is not, as you point out, a forum for advertising product. It is designed for objective reviews and exchange. While I'm sure we all appreciate the comments again, certain questions still obtain, and it feels off that the manufacturer would promote the work too much here. Please do not take offence, just trying to underscore the intent of the forum, which your last sentence (maybe that could have been the only one....) alludes to.

_________________
"Gimondi è un eroe umano, che viene sconfitto ma che continua la sua corsa fino a tornare a vincere." - Enrico Ruggeri


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 Post subject:
Posted: Thu Feb 05, 2004 4:09 pm 


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 Post subject:
PostPosted: Thu Feb 05, 2004 4:40 pm 
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Location: Athens, GA
Roger that Cadence, I understand and totally agree.


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