Commuting - Cateye LD-1000 on rear rack?

I'm just about sold on this light. My issue is that I have a seat bag attached to the post. It doesn't appear that the clamp that comes with it can be reduced enough to attach to my rear rack. Any suggestions?

I've got two. It comes with a post clamp, a belt clip, and you can directly screw it into a bracket. PRoblem is that screw is a self tapping job into plastic. Actually, I've found that the various mounting methods Cateye offers all require augmentation to prevent loss on bumpy roads. Heckuva light, though.

I'm just about sold on this light. My issue is that I have a seat bag attached to the post. It doesn't appear that the clamp that comes with it can be reduced enough to attach to my rear rack. Any suggestions?What brand/model of rack do you have, or can you post a couple photos of the rear of it?

I feel pretty stupid, but I have no idea. My ride is a 2005 Cannondale T2000.

cut out a piece of plastic the width of the rack, zip tie it in 4 places to the rack, mount the light on the piece of plastic.

Screw into the housing works best. I had an alum strap to hold it on at first and vibration stress fatigued it until it broke off.

I feel pretty stupid, but I have no idea. My ride is a 2005 Cannondale T2000.Ok, and it's the stock rack, I got it :)
http://www.cannondale.com/bikes/05/CE/large/5tr2grn.jpg

From that photo, it looks like you have a reflector bracket built into the rear rack, and it appears to be fairly sturdy. I'd relocate the reflector and put the LD-1000 on in its place. If it's like mine, it'll hold like crazy; it took major torque to install the screw the first time as it cut its threads into the plastic.

I don't know where you live, but it's quite likely that your red rear reflector is a legal requirement, so don't just take it off and leave it off or you may be technically in-the-wrong, and that's not a good thing in the event you get into a collision. So make sure you stay legal. If you need a reflector bracket for your reflector, then just run down to the bike shop with your bike and ask for a nice compact Cateye reflector that you can put on your seatstay with a SP-5 nylon band.

http://www.mechbgon.com/visibility/wareflectorsmall.jpg

If you don't mind molesting your seat bag, you might also consider putting a big DOT-type red reflector onto it. I punched holes in my rack bag and zip-tied one onto it (see attached pic). The DOT reflectors are at their best from long range, with their entire surface devoted to reflecting straight back to the source instead of being a wide-angle design where only the center part reflects straight back. If you're adding an LD-1000, evidently you do want high visibility, so think about that idea :)

http://www.mechbgon.com/visibility/DOT_Reflector1.jpg
these were two for $3. ph33r my mad l33t Nova LED strobe.

http://www.mechbgon.com/visibility/DOT_Reflector2.jpg
obligatory flash photo, the fenders have DOT Conspicuity Tape on them too

I did this, and found that my screw went too far into the case, bent/distorted the plastic inner lining, can't slide the batteries in and out anymore. But this light is so very good that I bought 3 more, and am trying a succession of workarounds. So FWIW, try to use the shortest screw that you can.

Excellent ideas all. I think I've got plenty to work with. Thanks for the help.

I did this, and found that my screw went too far into the case, bent/distorted the plastic inner lining, can't slide the batteries in and out anymore. But this light is so very good that I bought 3 more, and am trying a succession of workarounds. So FWIW, try to use the shortest screw that you can.You know, that happened to mine too, and I Dremel'ed the resulting "lump" to fix it. :o If the bracket is thin metal, maybe put a Presta-valve ring over the bolt to keep it from going in too far, or a couple of washers.

The LD1000 fits a standard reflector bracket. The LBS should have one if there's not one already on the bike, and then it secures with a simple self-tapping screw, which I think the light comes with.