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Discussion Starter · #1 ·
I see that Sram has a model PC-1 chain for single speed bikes. Is this just hype, or is there really a specific chain that works "better" for SS?

I have an 8 speed Sram on my SASS and it works just fine. Are there any chains that work better than others for SS? Seems far-fetched to me.

Russ
 

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Your 'SS-specific' chain ain't better, just wider than average 9 speed chain, because it doesnt have to be as skinny to negotiate a cassette and derailer.


1/8th chain is another stoiy though :)
 

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Steamroller
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Sram PC-1 or PC-7X among others

onepivot said:
I see that Sram has a model PC-1 chain for single speed bikes. Is this just hype, or is there really a specific chain that works "better" for SS? Russ
Lots of chains work fine, I'm big and really stress them. I ruined a couple cheap regular chains pretty fast. I tried a more expensive Wipperman 3/32" chain on my old SS bike and it held up well. Lately I'm using the 1/8" SS chains which are not designed to shift. They are also almost certainly stronger and a bit heavier. For some bikes I've built recently I used the PC-1. For my own bikes, I like the PC-7X. I'm building a bike right now which will have a Shadow Interlock chain, it's 1/8" and every link is a half link. It's supposed to be very strong, though not real light. Some BMXrs and probably some other guys use 3/16" chains, they are really burly.

This is the Shadow Chain:
 

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Steamroller
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I saw that in nickle plate

spuddy said:
I reckon the Wipperman 1G8 takes the cake. 12.8mm wide, and in colours too!

I still like the Shadow Conspiracy, it looks unique and even the name is cool. But I bet the big Wipperman is one hell of a strong chain.
 

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Mmmm, fat chains. Im rockin a 1/8th izumi on my track bike and its great. I have a friend with a 1G8 on his singlespeed, and it hangs out over the freewheel and stuff..... absurd but s-e-x-y :)

Heh, Shadow chain wins, it comes in A CAN.
 

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Discussion Starter · #7 ·
Mattman said:
Lots of chains work fine, I'm big and really stress them. I ruined a couple cheap regular chains pretty fast. I tried a more expensive Wipperman 3/32" chain on my old SS bike and it held up well. Lately I'm using the 1/8" SS chains which are not designed to shift. They are also almost certainly stronger and a bit heavier. For some bikes I've built recently I used the PC-1. For my own bikes, I like the PC-7X. I'm building a bike right now which will have a Shadow Interlock chain, it's 1/8" and every link is a half link. It's supposed to be very strong, though not real light. Some BMXrs and probably some other guys use 3/16" chains, they are really burly.

This is the Shadow Chain:
Does the PC-1 and PC-7X come with the power link?
 

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Retro Grouch
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My chain FAQ

I've posted this a couple of times. Maybe some day they will include it in the FAQ :rolleyes:

Traditionally single speeders used 1/8 inch BMX chains, since most single speed (SS) bikes are just 26" wheel BMX bikes anyway. Other reasons include the fact that SS track bikes and old BMX bikes had 1/8 inch cogs and chainrings and since 1/8 inch chains looked bigger than 3/32 chains they must be stronger. Also 3/32 (7-8-9 speed) multi-speed rated (MSR) chains are designed to derail, something you don't want to happen on a SS bike. A second look however shows there had been a lot more R&D money thrown at MSR 3/32 chains by Shimano and SRAM, so most 3/32 chains meet or exceed the tensile or "pull" strength of 1/8 inch chains. Since most single speed components available today come in 3/32, it seems logical to use 3/32 chains. On the other hand, while some claim that 1/8 inch chains on 3/32 gears cause more noise and wear than 3/32 chains, the jury is still out on this matter as many more use prefer this set-up. In the real world, it would seem the use of 1/8 inch chains work fine on 3/32 components and some, such as the SRAM PC-7 and KMC Kool chains are stronger.

One issue that comes up from time to time is the use of 1/2 links. The use of a 1/2 link allows you to vary the chain length by 1/2 inch intervals, rather than one inch with a standard link. This comes in handy when you are trying to convert a bicycle with vertical dropouts. 1/2 links are very plentiful in 1/8 inch and now available in 3/32 inch by spicercycles.com and KMC (via AEBike.com).

So do you need a single speed (non MSR) over a MSR chain? No, not really. Is there any advantage to a 1/8 inch chain? Yes, there can be if you have chainline and/or derailing problems a SS chain can help; and as I said before some are stronger. However if you are using a tensioner such as the early Surly Singleator a 1/8 chain may not work.

The tensile strength of a SRAM PC-7 is about 2500 ft lbs and only come in 1/8 inch (and pimp gold); all other MSR SRAM chains (including the PC-58) are around 2023 ft lbs. The KMC Kool chains rate at 2860 ft lbs and come in both 3/32 and 1/8inch. The KMC Z chains (with an H in the model number) also come in both sizes (i.e. the 3/32 Z610H; my choice of chain), rate at 2640 ft lbs and are a bit lighter than the Kool chains. KMC ranks most if their MSR chains at 2314 ft LBS; I have not seen and published data for Shimano chains.

So what chain should you buy? There is a plethora of 1/8 inch chains out there; one of the favorites is the SRAM PC-7 (on the other hand there has been considerable anecdotal information that the SRAM PC-1 (1/8) chain is of low grade and should be avoided). KMC also makes a line of 1/8 inch (or 3/16 inch if you dare) and 3/32 SS chains. They come in various weights and strengths so you pay your money and make your choice. As far as MSR 3/32 chains go SRAM PC-58 seem to be popular with the anti-Shimano crowd as are the KMC chains. Shimano wise any of the better 7/8 speed HG or IG chains will work; The 9 speed and especially the new 10 speed chains may not work with some BMX cogs and SS chainrings.
As a final caveat there is the question of longevity aka "streaching". Regardless of what you hear, all chains get longer with use (I'd call that stretching). There are so many factors that go into this "lengthening", that it's futile to try and rank one chain over another. Just try and keep your chain clean and lubricated and when it has stretches 1/8" over a foot, replace it.

Also checkout http://www.sheldonbrown.com/rinard/chain_stiffness.htm and http://www.63xc.com/gregg/gregchai.htm for some good chain spew.
 

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Discussion Starter · #11 ·
Thanks Brad......

that is a lot of info and covers the topic nicely. I agree that MTBR needs to add this to the FAQ

My SASS currently is running a Sram PC-48 and I will need to replace it soon. I really like the Sram power link set up simply because being able to remove it makes cleaning the bike (and chain) so much easier. I will most likely stay with Sram.

Russ
 

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where to buy the KMC?

aka brad said:
The tensile strength of a SRAM PC-7 is about 2500 ft lbs and only come in 1/8 inch (and pimp gold); all other MSR SRAM chains (including the PC-58) are around 2023 ft lbs. The KMC Kool chains rate at 2860 ft lbs and come in both 3/32 and 1/8inch. The KMC Z chains (with an H in the model number) also come in both sizes (i.e. the 3/32 Z610H; my choice of chain), rate at 2640 ft lbs and are a bit lighter than the Kool chains. KMC ranks most if their MSR chains at 2314 ft LBS; I have not seen and published data for Shimano chains.
Also checkout http://www.63xc.com/gregg/gregchai.htm for some good chain spew.
Where online does one pick up the Z610H? I don't want to order thru the LBS because it takes them about 3x as long (if they even remember to order - they wait until they have a big enough order...). I looked at AEbike and no z610h, so I kinda wonder if Quality doesn't stock it...

I go thru sram pc48/58s pretty quickly so the whole "stretchless" idea has me hot.
 

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Z610hx on line

pseudo intellectual said:
Where online does one pick up the Z610H? I don't want to order thru the LBS because it takes them about 3x as long (if they even remember to order - they wait until they have a big enough order...). I looked at AEbike and no z610h, so I kinda wonder if Quality doesn't stock it...

I go thru sram pc48/58s pretty quickly so the whole "stretchless" idea has me hot.
I usually buy them here;

http://www.bikepartsusa.com/product_info.phtml?p=01-92638

but with $8.00 shipping I usually buy 4 at a time.

I did a google search and found this place for [email protected] less;

http://www.aggrobikes.com/index.php?cPath=48

You pay your money and take your choice,

1G1G, Brad
 

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Brad, do you know the difference between the KMC Z610H and the KMC Z610RB, which we have in Holland (they don't do the H(X) and I can't find the RB on the global KMC site..)

RB is some rust treatment..

Did some one try the S10 Inox from KMC??

Thanks,

JJ

P.S. And that shadow chain is sooo cool!!
 

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RB= Rustbuster

JJT said:
Brad, do you know the difference between the KMC Z610H and the KMC Z610RB, which we have in Holland (they don't do the H(X) and I can't find the RB on the global KMC site..)

RB is some rust treatment..

Did some one try the S10 Inox from KMC??

Thanks,

JJ

P.S. And that shadow chain is sooo cool!!
From the KMC web site:

KMC's exclusive RustBuster or RB is a Zinc and Chrome treatment that resists corrosion and rusting. It will withstand the rigors of a 500 hour salt spray test without rusting. A great choice for beach bikes or wet weather commuter bikes. When used in conjunction with a quality bicycle specific chain lube regular maintenance is dramatically reduced. Models are available for 1/8" single sprocket or 3/32" derailleur bikes. The chart compares the rust resistance of the RB chain with a nickel-plated chain and a regular black or brown finished chain.

As far as the "X" in Z610HX, the X is a designation for "Bullseye Riveting", which usually goes along with KMC's bushingless design. The riveting and bushingless design supposedly makes for a chain that is stronger, easier to keep clean and wears better.

pseudo intellectual said:
I go thru sram pc48/58s pretty quickly so the whole "stretchless" idea has me hot.
PI, there is no such thing as stretchless; better described as "less-stretch" :rolleyes:

1G1G, Brad
 

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Yo, youse guys sound very chain-knowledgeable. The shadow consipiracy chain looks great and the half-link set up is great. I've never seen one, but can you tell me if they come set up with a master link.
I ride SS with an EBB and plan doing some future rides that will take me out of the 32:16/17/18 zone and into the 32:19/20 zone since these will involve long, sometimes steep and siustained climbs. I plan to use a specific chain for each "zone" so that I can optimize bottom bracket position and not be adding and subtracting links all the time,

Any thoughts??
 

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Link?

Mattman said:
I'm building a bike right now which will have a Shadow Interlock chain, it's 1/8" and every link is a half link. It's supposed to be very strong, though not real light.QUOTE]
Hey Mattman, can't seem to find a link to that chain. Could you post me one?? Thanks
 
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