Chain Problems - For the love of everything, and my sanity, please help.
07-30-14 | 02:01 AM
#1
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From: Madison, WI
Chain Problems - For the love of everything, and my sanity, please help.
I bought a Shimano chain(which will never happen again). I think it was an HG70. It says 8sp, HG, and Narrow on the chain. It came with a stupid little single use pin to connect it. I needed to remove the chain to move the drive-train to another bike and wanted to use some sort of quick-link to reconnect it, and also make it field serviceable and easier to clean the chain. I can't seem to find a quick-link for this chain. I've tried the 8sp SRAM, KMC Missing Link, and Missing Link II. Does my unicorn exist, or should I just throw this practically new chain in the donation bin and buy a SRAM? I'm about done with it after 4 different bike shops and a fair amount of misinformation(mostly online, but some from the shops too), but figured I'd try one last resort and ask here since you guys know basically everything.
07-30-14 | 04:43 AM
#4
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Bikes: 1983 Basso Gap Campy SR, 1984 Basso Gap Shimano 6700, 2009 Cervelo S1, 2009 Trek EX9, Zunow Z-1
My experience was similar. I decided to use the master pin though I prefer master link usage. I eventually ended up getting a kmc 8-speed chain which worked fine and came with a quick link. Very inexpensive.
07-30-14 | 04:51 AM
#5
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[MENTION=75597]Eschwlc[/MENTION], that's a great idea worth trying. Very clever.
[MENTION=175875]3speed[/MENTION], the LBS should have at least sold you a few of those blasted little pins. Sheesh! What were they thinking?
At least you know have a great set of spare quick links to carry on rides with the likes of [MENTION=152773]noglider[/MENTION].
He can be really hard on tandem timing chains. Right, [MENTION=172428]photogravity[/MENTION]? 
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07-30-14 | 04:56 AM
#6
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Bikes: 1983 Basso Gap Campy SR, 1984 Basso Gap Shimano 6700, 2009 Cervelo S1, 2009 Trek EX9, Zunow Z-1
It's been a couple of years and my memory is not great. I seem to recall the hg70 chain was a just a bit too wide to accommodate any of the quick links. I remember being able to just get one of them on but it was to tight and bound the chain.
07-30-14 | 04:58 AM
#7
07-30-14 | 06:06 AM
#8
aka: Dr. Cannondale
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I have a bag of 50 of those 6/7/8 speed connector pins, happy to mail you a couple of them if that helps at all. Bought 'em in bulk years ago and I'll never go through all of them.
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07-30-14 | 06:15 AM
#9
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I really miss the old Sedis Sport chains..... I never used a shipmano chain on my bikes and I don't think we sold many. We always recommended Sedis chains.
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07-30-14 | 06:57 AM
#10
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From: Minas Ithil
One time only? I assume you completely removed the pin from the link? You should push it out just far enough to separate the links. Then push it back in to reassemble the chain.
07-30-14 | 07:12 AM
#11
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From: Near St. Louis, Missouri
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I use KMC links with Shimano chains on my 9- and 10-speed bikes instead of the pins so that I can remove the chain to clean and lube it.
07-30-14 | 07:13 AM
#12
What??? Only 2 wheels?
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I'm not familiar with that chain. Is there some reason a conventional chain tool won't work, assuming you can live with a chain two links shorter?
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07-30-14 | 07:16 AM
#13
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From: Zang's Spur, CO
- IG was narrower, and compatible with masterlinks from SRAM and Superlink.
- HG was wider, and not compatible with any masterlinks I know about.
07-30-14 | 07:54 AM
#14
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From: Minas Ithil
NOT on a newer Shimano 8-, 9-, 10-, or 11-speed chain. If you break the chain to remove it from the bike, you should use a new replacement pin. Also you shouldn't break the chain at the same pin; rather, select a pin that's never been removed before and replace it with a new pin. I've seen a couple of Shimano chains break due to people reusing the old pin. The worse was a guy out of the saddle climbing a steep hill. He went from vertical to horizontal in about a half second - fortunately into a ditch instead of into a road with traffic.
I use KMC links with Shimano chains on my 9- and 10-speed bikes instead of the pins so that I can remove the chain to clean and lube it.
I use KMC links with Shimano chains on my 9- and 10-speed bikes instead of the pins so that I can remove the chain to clean and lube it.
07-30-14 | 08:03 AM
#15
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From: Minas Ithil
07-30-14 | 08:50 AM
#17
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i bought a shimano chain when i built up my trek 930, i had the same problem, and my LBS tried to find the correct quick link, we never did.. i will never buy this again... i use kmc chains all the way...
07-30-14 | 09:21 AM
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07-30-14 | 09:46 AM
#19
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From: Minas Ithil
07-30-14 | 09:49 AM
#20
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Don't you think that someone who has been on C&V for 9 years and has 8000+ post knows a little something about chain replacement?Shimano literature insists that the entire pin be replaced each time the chain is "broken" for service, etc. I couldn't find this document, but I believe we all trust Park Tool for expert guidance. Scroll down a bit until you come to the Shimano chain section.
The relevant section is quoted below:
Procedure for Shimano® Chain
Some chains, including Shimano®, use chain rivets which are peened. This creates a "mushroom" effect at the ends of the rivets, which adds to the strength of the chain side plates. When a rivet is pressed even partially out, this peening is sheered off on the side pressed by the chain tool. If this rivet were reused, it would create a weak link at that rivet. In the image below, a Shimano® rivet is shown in an optical comparator, which magnifies the rivet. The original peening is seen at the bottom of the rivet. The top of rivet has the peening sheered off. This top section was pushed through the outer chain plate.
Shimano® chains use a special connecting rivet when the chain is installed new or when one is removed and re-installed. This connecting rivet has special flaring that is guided in by a long tapered pilot. The pilot is then broken off before riding. Only Shimano® brand chains should use the Shimano® connecting rivet.
The 7 and 8 speed chains use a black connecting rivet. The narrower 9-speed chain uses a silver-colored connecting rivet. The Shimano ® CN-7800 chain for 10-speeds uses a silver colored rivet with an extra-machined line for identification on the pilot. The Shimano ® CN-7801 chain for 10-speed sprockets uses a connecting rivet with three machined identification lines. The 10-speed chain rivets are not interchangeable.
Shimano® chains use a special connecting rivet when the chain is installed new or when one is removed and re-installed. This connecting rivet has special flaring that is guided in by a long tapered pilot. The pilot is then broken off before riding. Only Shimano® brand chains should use the Shimano® connecting rivet.
The 7 and 8 speed chains use a black connecting rivet. The narrower 9-speed chain uses a silver-colored connecting rivet. The Shimano ® CN-7800 chain for 10-speeds uses a silver colored rivet with an extra-machined line for identification on the pilot. The Shimano ® CN-7801 chain for 10-speed sprockets uses a connecting rivet with three machined identification lines. The 10-speed chain rivets are not interchangeable.
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Bob
Enjoying the GA coast all year long!
Thanks for visiting my website: www.freewheelspa.com
Bob
Enjoying the GA coast all year long!
Thanks for visiting my website: www.freewheelspa.com
07-30-14 | 10:17 AM
#22
What??? Only 2 wheels?
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Bob, thanks for that post. It certainly answered my question, taught me a few things (such as to be thankful I've never been tempted to use a Shimano chain).
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Real cyclists use toe clips.
With great bikes comes great responsibility.
jimmuller
Real cyclists use toe clips.
With great bikes comes great responsibility.
jimmuller
07-30-14 | 10:17 AM
#23
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From: Minas Ithil
07-30-14 | 10:47 AM
#25
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At least you know have a great set of spare quick links to carry on rides with the likes of @noglider. He can be really hard on tandem timing chains. Right, @photogravity?
He can be really hard on tandem timing chains. Right, @photogravity?