On my ride home tonight, my Dinotte's battery crapped out, and I forgot to turn on my backup light (B&M DToplight XS). The DToplight's output is pretty dim compared to a PBSF or Radbot 1000, so I'd like to replace it with something brighter. Only catch is that it has to be compatible with Tubus/Euro-style rack mounting (horizontal holes 50mm or 80mm apart).

Here's what I've tried:

• B&M 4DToplight (very dim, good reflector)
• Spanninga Eclipse XB (very dim, good reflector)
• B&M DToplight XS (slightly brighter than the 4D, good reflector)
• PDW Radbot 1000 (could not get it to clear the fender, returned it)

I'm considering the Cat Eye Reflex, but I'm concerned it'll interfere with the fender. The TL-LD1100 looks like it might work, but I'm not sure if everything will fit. Planet Bike's Rack Blinky 5 is another possibility, but it may hang down too far.

Any advice/recommendations? I'd like to avoid seatpost- or seat stay-mounted lights if possible.

Here's a couple of pics that show the current light (XS) and its position relative to the fender:

superflash rack mount:

The back of your bike looks like mine. I also have a Tubus Cosmo, SKS P45 fenders, and I use the dynamo hub version of the D'toplight--supplemented with a DiNotte 300R.

The DiNotte 300R is intended for seatpost or stay mounting, but mine came with stay mounts small enough to fit the Cosmo. It's also intended to be used in a vertical orientation, but I unscrewed the mount from the back of the light and rotated it 90° for a horizontal orientation. The two together and I think you could mount the 300R in place of the D'toplight. But you lose the reflector. The 300R has none. Sorry, but I'm not about to disassemble mine to test the fit for you.

I have the CatEye TL-1100 screwed to the rack on another bike. While I like it a lot, when I bought mine it only mounted to the US-style reflector mounts, not the Euro-style light mounts like on the Tubus. And you also lose the reflector.

Still, I have to ask, why not just keep your DiNotte charged or carry an extra battery pack?

Just got this. I'm loving it. I went from a cat eye that mounted on my seatpost and rubbed my leg.

That's how my Cateye Reflex is mounted on a Tubus Vega rack. The Reflex even comes with a similar mount. The Reflex isn't a bright as the Radbot...but at least remains lighted while riding...but it is brighter than the B&M. It's also easier to turn on and off than the old B&M 4DToplight...the switch on that light is in the wrong place when used with fenders. The Reflex has a reflector which the Planet Bike Superflash doesn't.

I hate the switch on my Toplight. Plus, the two halves of the light barely stay connected.

I think I'll pick up a Reflex and TL-1100 and keep the one that fits best.

The Toplight switch hurts in the cold, don't it?

The Reflex comes with the adapter. You can get the adapter for the 1100 from Cateye for an additional $5. REI carries both...I think. I know they carry the Reflex because I bought one last week.

https://www.flickr.com/photos/23841842@N07/5393946186/

The supernova e3 tail light has room for itself and a party of five in there.

It's extremely bright, too. I believe the downside is that it only operates in tandem with the e3 headlight, but I could be wrong?