I am actually considering getting the OGK Chainguard for my Diamondback Sorrento, though I also have my eyes on the SKS Chainboard. Does anyone have any experience with those?

I'll let you know as soon as I get my chainguard and install it!

The sooner it is possible to purchase sensible transportation bicycles that are not intended to be sports equipment for racer wannabees in team Lycra panties the sooner we will see larger numbers of sensible people commuting on them wearing sensible cloths to sensible jobs and industries.

I just installed the SKS chainboard and have no problems with it. I installed it on an IGH bike, though. It's as good as the hebie 391, which I have on another bike. The hebie went on a triple ringed bike. Both of these go around the BB. Both have the ability to extend farther back or closer in (kinda like a trombone).

You really only need to have a cover on the upper part of the chain to protect your pants. A full on chaincase would be good for a bike that sits outdoors all the time. It'll shelter a lubed chain from the elements. I have a bike that sits outside my workplace and will probably do a full chaincase to it in the future.

I just looked, my son's 2-piecer is an OGK, here is a picture:

http://home.comcast.net/~adrian_spidle/chainguard.jpg

Nice. I definitely like the look of the OGK. Now, this may sound like a silly question, but does the package come with everything that is needed to mount it on your bike?

We got that 3rd-hand, but I happen to know the original owner, I will ask him. It looks like it all came together though.

who make this and where can I get one? does it work wit microdrive type drivetrains?

At least one compelling reason to run a chainguard is to keep your chain clean. If you are the sort who hates the onerous chore of chain servicing, then it is only a matter of time before you succumb to the ultimate cycling insult - neglected chain 'greasy leg'.
By keeping the grit and dirt off your chain with a guard, you can cut out half the worry of chain rub.

For Danish babes hauling around Copenhagen on upright three-speeds, chain guards are also the ticket.

http://i28.tinypic.com/vex9cl.jpg

See? THAT works, doesn't it?

Ditto, if you wear a properly tailored suit while commuting. Keeping your $350 Brooks Bros. gabardines out of the chain on windy days is a good thing.

Besides, everything I can find includes the chain guard as standard equipment on bona-fide commuter bikes. After all, if it's on the internet it must be right... right?

Finally, chainguards are the ultimate in nerdy chic (which is their main detraction here in the USA). At least, that is the case for the full coverage guards.**
If one is compelled by either actual lifestyle or internet 'bike rules' to look completely dweebish, nothing else will do it like a chain guard.

Think 'Dilbert GoesBike Commuting' and you get the idea.

** The Chainboard guards actually have a hi-tech look and an appeal that works. At about $25 all in, I'm gonna get me one.

I've been using the OGK on my Trek 7.5 FX for a few months now and quite like it. It's not a real rugged bit of kit and the price is high for what it is, but the guard works and is rather easy to install.

I'd buy it again.

I think so, check it at Rivendell: http://www.rivbike.com/products/show...inguard/12-269

http://www.rivbike.com/images/produc...73/12-269b.jpg

Coque.

The OGK does complete with the hardware; couple brackets, couple clamps, etc. Kind of a fiddly install, destructions are in Japanese but the diagrams will get you through. You'll be bending/shaping the lightweight metal straps to fit your frame tubes. Go easy to avoid scratching if your ride is a looker. After getting the guard up and running, re-check your fasteners after the next couple rides. Once everything is fitted in together the system stays in place quite well.

Okay, so I've installed the chainboard, but I have the same trouble as some others have had with it blocking the highest gears. My bike isn't exactly built for speed, and since I habitually spend about 90% of my time on the center front ring I'm going to ride it as-is for a while. If I find I can't live without those highest gears, though, I'll switch to the OGK.

I can say this for the chainboard- it works like a charm. No snagging, no grease, trousers are clean and un-ripped when I arrive at work.