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Quality chain splitter tool?

Old 07-24-16, 01:54 PM
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Quality chain splitter tool?

I bought a chain splitter tool from eBay, but it was of such poor quality that the amount of slack in the screw made it hard to use at all. The screw pin would circle the target pin on the chain and only barely get close enough that it didn't simply crush the chain itself.

I'm assuming there should not be this type of slack in the screw mechanism? Or am I simply using the tool incorrectly?

Regardless, some advice on a quality product would be nice.
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Old 07-24-16, 02:18 PM
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I have a Park CT-5 Mini Chain Brute Mini Chain Brute Chain Tool | Park Tool which i keep in each bike's tool roll along with a couple of quick links and the links left over from sizing the chain.

At home I use a KMC chain tool https://www.amazon.com/KMC-REV-Chain.../dp/B00DJ4U7YI which comes with 2 reversible pins which gives 3 spares; I haven't broken any yet.

Both have nicely threaded screws and work smoothly.

Cheap tools are often disappointing and can do more harm than good if you damage an expensive part with it or it leaves you stranded.
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Old 07-24-16, 03:20 PM
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I'm having a hard time visualizing the problem from fractal5's description above, but a chain tool is a pretty simple device and it's hard to imagine even a poorly-designed one whose pin won't reach, leaving "slack". I've got a feeling he might not be seating the chain properly into the tool.

That aside, I use the same Park Tool CT-5 dsbrantjr mentioned above. It's worked well enough for me that I haven't bothered buying a full-size chain breaker like his KMC or a Park Tool CT-3 or CT-4. (Not yet at least.)
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Old 07-24-16, 03:46 PM
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My 50 year old Cyclo chain tool still works , though I do Have some Park ones too.
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Old 07-24-16, 04:54 PM
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The Parktools CT-3 and CT-5 are both good choices .
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Old 07-24-16, 05:05 PM
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I have used the small Park chain breaker for years with good success. I recently got a really nice Hozan C-371 chain tool from Amazon. Wow!!! This will be the last chain tool anyone will need to buy. The quality is superbe!
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Old 07-24-16, 07:06 PM
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+1 for the Park Mini Chain Brute. I've got two of them, one in my tool box and one that I carry in my tool kit on long rides (along with a couple Missing Links). I've never had this tool fail me and I've rehabbed some bikes with very old, very rusty chains.
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Old 07-24-16, 07:07 PM
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Originally Posted by SkyDog75
I'm having a hard time visualizing the problem from fractal5's description above.
Probably has a bent pin.
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Old 07-24-16, 07:49 PM
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This year I started carrying a Park Mini chain tool after years/decades of not carrying a chain tool. Haven't needed it for my bikes but was able to rescue a woman on a club ride a few weeks ago - her 9-spd chain had been dropped inside and was seriously jammed. I was able to break the chain in order to pull it out and then removed a couple of bent links and rejoined what was left. (The easy part was the final joining with a functional quick link.) Saw her on a ride last week and she has a new chain. There is no substitute for a chain tool when it's needed. Would recommend that anyone getting one to carry for emergencies who doesn't have much experience with one should practice using one on an old chain.
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Old 07-25-16, 02:11 PM
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My Park CT-5 worked great on my Campagnolo 10-speed chains. But I struggled to push out a pin to shorten my new Ultegra 11-speed chain. I used an adjustable wrench to hold the CT-5 body loop to get more leverage. Other than that, it's been great.



Another rider on a trail had one of those cheap knockoff chain tools, and had bent the shelf trying to fix his broken chain. It was useless, neither of us could get the pin out.

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Old 07-25-16, 02:52 PM
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Another vote for the Parktools CT-5; works as advertised.
Even though I don't have any issue with the CT-5; I got a
Parktools CT-4.3 a little while ago. Had some store credit
to use up. Haven't got the chance to use the CT4.3 yet.

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Old 07-25-16, 05:37 PM
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Thanks for the suggestions.

Does this one look ok? Park Tools CT5 Mini Chain Brute Chain Tool for 5 10 Speed Bike Chains Cycles | eBay

It is for a KMC Z72 chain.
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Old 07-25-16, 05:51 PM
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For years I used the Park CT-5 (and, yes, the one you linked to is the one we're talking about) as my main "shop" chain tool. It does the job and never gave me a problem. Recently I splurged on the Park CT-4.3, and I have to say it is much more satisfying to use. It feels better in my hands and just inspires more confidence.

If you only have one bike and don't need to break chains very often, the CT-5 is a fine choice. If you're planning to gradually accumulate a nice set of tools for a home workshop, the Park CT-4.3 is the way to go.
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Old 07-25-16, 06:18 PM
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I have the Park CT-3, which is a fine tool. I have thought about upgrading to an 11 speed tool, but is it really necessary? Seems to work ok on 11 speed chains. Is the width difference between chains an actual problem? Anyone wrecked an 11 speed chain using a 10 speed chain tool?
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Old 07-31-16, 03:18 PM
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I don't see much mention on the Park CT 6.3. Has anyone used this and could comment on its quality? As a campy chain user, its peening ability is promising, and it's half the cost of the 4.3
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Old 07-31-16, 03:47 PM
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Originally Posted by fractal5
Yes, that's the Park Tool CT-5 we've been talking about, although you can probably get it for a few bucks less from other sellers. If you're in the U.S., Modern Bike sells it for $15.26 with free shipping. Amazon currently sells it for $15.25 with free shipping for Amazon Prime members.
Park CT-5 Mini Chain Brute Chain Tool - Modern Bike

It would work just fine for a KMC Z72 chain.
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Old 07-31-16, 04:03 PM
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Wont be putting the chain back together with the chain tool , now shorter is the only way it works.

You save a length you cut then use 2 Quick Links to join it.
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