[MikeD]

Man, it's hard to find a chain guide in OG ISCG 2003 spec aside from Chinese eBay trash.

Blackspire is closing some out, but they're discontinued models and I would like to stay with something current for when plastics break.

Any other options come to mind? I have a xc bike needs a top guide only, and an endurbro-ish bike where I'd prefer something with a roller as well, though that's not 100% essential.

 

['size]

...ISCG 2003...
...something current...

is it just me?

 

[MikeD]

That's kind of the crux of the issue...

 

[jonKranked]

Iscg is one standard that's a standard.

Are there tabs on the frame?

 

[MikeD]

Yes... that's why I need something with the outdated pattern.

Canfield seems to have held onto the old one for a while for some reason.

 

[jonKranked]

I was gonna offer you and iscg old adapter but that won't help. There's a chance I might have something, I'll check later

 

[velocipedist]

To elaborate on what @jonKranked said
iscg (aka iscg old or iscg 03) and iscg new (aka iscg 05) are the two standards. Perhaps this will help your search.

For reference

https://service.bythehive.com/Guide/ISCG+explained/24

 

[MikeD]

It's ISCG03 per the Canfield site. Forgot there was a previous standard. That was a long time ago...

 

[velocipedist]

It's ISCG03 per the Canfield site. Forgot there was a previous standard. That was a long time ago...

But there isn't, iscg old and iscg03 are the same there is no previous iscg standard.

 

[MikeD]

So then why are we having this diversion lol? I asked about the "OG" standard and referred to it as ISCG03. Claro, sí?

 

[MikeD]

I was gonna offer you and iscg old adapter but that won't help. There's a chance I might have something, I'll check later

Thanks, and yeah, that's the problem. The tabs won't let me use a different adapter. I could go with a BB Mount just fine as well though.

 

[slimshady]

OneUp?

Chain Guide BB Mount / ISCG03

Eliminate dropped chains forever and more than double your chainring life The OneUp BB Mount / ISCG03 guide uses the same simple, one tool adjustment as our best-selling ISCG05 Chain Guide. At only 34g the OneUp BB Mount / ISCG03 Chain Guide weighs less than a sip of water, and can save you...

www.oneupcomponents.com

*Almost all ISCG03 equipped bikes have threaded BB shells and so are compatible with this guide. Double check you have a threaded BB before ordering.

 

[jonKranked]

Thanks, and yeah, that's the problem. The tabs won't let me use a different adapter. I could go with a BB Mount just fine as well though.

Let me go dig through the shop. There's a chance I might still have an old e13 backplate that's iscg old

 

[MikeD]

OneUp?

Chain Guide BB Mount / ISCG03

Eliminate dropped chains forever and more than double your chainring life The OneUp BB Mount / ISCG03 guide uses the same simple, one tool adjustment as our best-selling ISCG05 Chain Guide. At only 34g the OneUp BB Mount / ISCG03 Chain Guide weighs less than a sip of water, and can save you...

www.oneupcomponents.com

Oddly this didn't/doesn't show up when I searched the site...just the 05 variant. The direct link works, though.

 

[jonKranked]

This appears to be all I have for iscg old.

 

[MikeD]

Cool--alas I am running puny 30t rings...

 

[jonKranked]

Cool--alas I am running puny 30t rings...

Hans and Franz have something to say about that.

 

[MikeD]

The OneUp is discontinurated. Blackspire stuff may be the best bet...

 

[canadmos]

The OneUp is discontinurated. Blackspire stuff may be the best bet...

You can try emailing them to see if they have any left.

I have their old chain guide, which they no longer sell the plastic for (lame), but they had some in the warehouse and sent them out.

 

['size]

The OneUp is discontinurated. Blackspire stuff may be the best bet...

mrp still makes a 28-38t bb mounted guide and others make seat tube mounted guides

 

[slimshady]

This, with some Dremel action (32t minimum):

XCR BB Mount Chainguide - Superstar Components

XCR BB mount chainguide for use with single ring. Fits 9 or 10 speed cassette and 32-44T chainring. Supplied with spacers.

www.superstarcomponents.com

Or this:

https://dcbikes.com.sg/products/bottom-bracket-bb-mount-single-speed-mtb-top-chain-guide

Or this:

https://dcbikes.com.sg/products/iscg-05-chain-guide-1x-system-single-speed-for-round-30-40t-oval-32t-38t-chain-ring

Or these if you feel dentist enough:

FREESOLO-BB-38 | 1000111

The Freesolo V2 chain guide with its wide range of applications from CC, to Enduro and DH, is a true all-rounder and still the lightest and fully adjustable chain guide on the market. This version can also be mounted on bikes without chain guide mounting…

77-store.com

X11-EVO | Reverse Components

Reverse Components X11-EVO

reverse-components.com

https://www.mozartt.com/?product=mono

 

[Happymtb.fr]

Maybe something like this would work for you

ChainSpy | Shifters & Derailleurs | Problem Solvers

 

[toodles]

Can't just get an ISCG adaptor and convert to ISCG05 (new) with that? I think the ISCG05 adapters don't interfere on ISCG OLD

 

[Flo33]

Maybe something like this would work for you
View attachment 165904

ChainSpy | Shifters & Derailleurs | Problem Solvers

No. Had this on my commuter, chain dropped a few times. No way this is gonna work on an mtb.

 

[Happymtb.fr]

@Flo33
A narrow wide chainring is not enough for you on a commuter? That's sound like a fun way to commute

 

[jonKranked]

MRP lists both ISCG and ISCG-05 as mounting options on several of their guides. doesn't look like they have any inventory. might be worth an email to them to check.

https://mrpbike.com/pages/chainguides

 

[MikeD]

Can't just get an ISCG adaptor and convert to ISCG05 (new) with that? I think the ISCG05 adapters don't interfere on ISCG OLD

View attachment 165905

If that's the case it would be great to know...I read somewhere it wouldn't work, but haven't had the experience to parse that info. I will feel dumb but happy there's an easy solution if fits. My bike knowledge falters from about 2005 to present...that's when I started traveling and basically lived in an MTB time capsule till 2 years ago.

If anyone can confirm/refute, would appreciate.

My newer bikes won't take clamp on guides, either, alas. Seat tube isn't there in the right place for it.

If the ISCG05 adapter doesn't work out, the MRP BB mounts and the Blackspire BB or ISCG03s seem like my best bets so far for something stout, lasting, and available.


Of course, if I could just find a top guide for my MRP G2 I'd be back in biz for my big bike. Couple might be available online; still poking around. Also found 3D printer instructions to recreate one...

 

[Atomic Dog]

https://ridemonkey.bikemag.com/threads/anybody-need-an-old-ass-e-thirteen-drs.290745/#post-4499861

I can't remember if I still have it or if it ended up at Goodwill. If you want it and it's still in my garage somewhere, it's yours. Maybe you can cannibalizes part of it to make what you need?

 

[jonKranked]

https://ridemonkey.bikemag.com/threads/anybody-need-an-old-ass-e-thirteen-drs.290745/#post-4499861

I can't remember if I still have it or if it ended up at Goodwill. If you want it and it's still in my garage somewhere, it's yours. Maybe you can cannibalizes part of it to make what you need?

just like the good ol' days of chain guide installation. hope you have a dremel!

 

[6thElement]

Poke around on PB buy/sell there's lots of old guide stuff mixed in with the newer listings.

 

[MikeD]

https://ridemonkey.bikemag.com/threads/anybody-need-an-old-ass-e-thirteen-drs.290745/#post-4499861

I can't remember if I still have it or if it ended up at Goodwill. If you want it and it's still in my garage somewhere, it's yours. Maybe you can cannibalizes part of it to make what you need?

Thx man but the TRS isn't what I need for a couple reasons--appreciate it though! Used to have a bunch in the spares box myself. Forget what I did with them.

 

[MikeD]

just like the good ol' days of chain guide installation. hope you have a dremel!

literally why I bought my first Dremel lol. Tiny battery powered one. I thought I was next-level.

 

[MikeD]

Can't just get an ISCG adaptor and convert to ISCG05 (new) with that? I think the ISCG05 adapters don't interfere on ISCG OLD

View attachment 165905

E13 says no. That may be where I looked it up. Other sources say it depends on the frame and specific adapter.

https://www.ethirteen.com/products/iscg-adapter

 

[Flo33]

@Flo33
A narrow wide chainring is not enough for you on a commuter? That's sound like a fun way to commute

Hell yeah it is. Why take the fast route if there is a fun route. CX tires on a steel road bike with straight bars work pretty well on not too rooty offroad tracks.

 

[Udi]

A company called Fifty-Fifty makes some pretty nice chainguides, I bought one that does what you describe (ISCG03 / ISCG-OLD) for an old P-3 frame. I got the upper guide + lower roller + no-bash version. I run different versions on 3 bikes. I prefer it to everything MRP and e.13 has made to date, although I do prefer the e.13 roller wheels (the jockey wheel type, clear stiff rubber) and run those in them. They're light and seem pretty durable, the plastics are also better than the e.13 rubbish that cracks after a while.

The one I bought was the last from that source but if you can find one they do the job well.

 

[dump]

A company called Fifty-Fifty makes some pretty nice chainguides, I bought one that does what you describe (ISCG03 / ISCG-OLD) for an old P-3 frame. I got the upper guide + lower roller + no-bash version. I run different versions on 3 bikes. I prefer it to everything MRP and e.13 has made to date, although I do prefer the e.13 roller wheels (the jockey wheel type, clear stiff rubber) and run those in them. They're light and seem pretty durable, the plastics are also better than the e.13 rubbish that cracks after a while.

The one I bought was the last from that source but if you can find one they do the job well.

This company? Look pretty decent:

CHAINGUIDES – FIFTY-FIFTY

www.fiftycycles.com

 

[Udi]

That's it.
I run this version: http://www.fiftycycles.com/products-2/chainguides/dh-lite-series
32T on hardtail (ISCG03), 32T on enduro (ISCG05), 34T on DH bike (ISCG05).

The e.13 rollers ("gen 1 stealth") I use look like this:

https://i.ebayimg.com/images/g/SsoAAOSw9B9fFopq/s-l1600.jpg

The seals are sometimes blue, then light green on the later models.

The stock fifty-fifty rollers work fine too but they do deform after a while.
The actual chain guides have been great though.

 

[MikeD]

Argh, I really want a 28/30t guide tho... Found a bunch of options, including the Mozzarts, at 32t.

Appreciate the feedback; have a few good leads.

 

['size]

Argh, I really want a 28/30t guide tho... Found a bunch of options, including the Mozzarts, at 32t.

Appreciate the feedback; have a few good leads.

so are you just opposed to a bb mounted guide designed for your preferred tooth count?

 

[MikeD]

No, I'd be fine with BB mount too. Just weighing options right now. BB or ISCG mount top-only guides are readily available in a few types, looks like, and would be fine for the XC bike.

The big bike still presents an issue finding a guide with a lower pulley (again, not 100% essential but my preference) in the smaller tooth count that will mount to the bike by whatever means. I don't see any current BB mount options for this without adapters.