I'm sure some people know of fenders that mount to beam racks, but I don't have a beam rack. I have a Topeak Explorer rack (https://www.topeak.com/2007/products/racks/explorer.php) and really want to put a fender on my bike. The back of the rack has a couple of eyelets for a tail light, but I am hopting to find a fender (or half fender) that could attach there. I only have one set of dropouts (I think that is what the eyelets are called) back on the chain stays and would rather not mount both the the rack and the fender there.

I have recently become a much more serious commuter and the rides in the rain get rather dirty. I appreciate any input.

Edit: I spoke with Topeak and they won't admit to knowing of anything. A search at some of the more well known online bike stores has had no success either.

Use a longer screw and bite the bullet. The fenders that attach to the frame are usually easily stolen. Just make sure you don't attach the rack at the end of the screw, keep it close to the frame.

Rack and fenders on the same bolt is perfectly OK as long as you follow the advice above, rack first then fender outside. The best setup is a stainless steel allen bolt of the correct length (a few threads left protruding ) plus a washer.
You should use the light bracket for a rear light, this is by far the best location, clearly visible but protected from damage and with a bolt-on unit, hard to steal.

I just recently purchased the same thing, a Topeak Explorer tubular rack:



I think it's great they have a mounting bracket for a taillight (top left in picture above), but has anyone found a light with a compatible mount? Topeak's website says:I realize I could use the "Red Light Mount" (included with the rack) and thereby attack Topeak's UFO taillight:

But I'd prefer to use something more flush like the Cateye LD600:

From what I can find on the web, it seems the mounting holes are a standard found in many European countries. A good link with pictures of rack mounted taillights can be found here:
https://www.peterwhitecycles.com/tail...sp#rackmounted

Now I know Topeak's site says the holes are only for mounting with 80 mm lights, but that's using the plastic mounting bracket (included with the rack) that attachs to the holes on the frame itself, which are 50 mm apart. So it seems to me that any light using 50 mm OR 80 mm mounting holes would work.

Cateye has an adaptor available for use with their TL-LD130/150 that infers compatibility with 50 mm holes:
https://www.cateye.com/store/parts.php?cid=3_106

So what has everyone else done? This is a pretty popular rack, and I can't believe I'm the only one who's wanted to attach a taillight to via the rack's mounting holes.

On an aside ... you'd think attaching a tail light wouldn't require trial & error or research. Just another reason I'm frustrated with the trend towards tool free mounts!

I used zip ties to attach a cheap x-mart plastic fender to my rack, which is very similar to yours. This is absolutely not the same as the nice close-fitting fenders most commuters probably use. It does, however, prevent me from having a skunk stripe when I get to work, and it keeps my improvised trunk (sitting on the rack) from getting soaked.

KTK

I attached my freddy fenders to my rack with hose clamps. They're plastic coated and you can find them at any hardware store.

jph- I just want to put a reflector on that spot and I use a light on my seat post. I haven't done the reflector yet but I am thinking that I will just get some accessory cord and tie it on. The reflector is nice and light and think cord would work just fine. Also, I know that The Touring Store sells some lights that attach to either a 50mm or 80mm mount. Maybe not the brand you're after, though.

I ordered the PB SpeedEZ fenders and my LBS should be getting them sometime tomorrow. I will let you know how well they go on and stay on once they are on.

Just zip-tie some coroplast to the rack.

I don't normally have to run fenders here in dusty ol' Denver but last winter was one of the rare nasty winters we get. I pieced together a fender system for my mountain bike from a couple of different fenders that provided good coverage, went under the rack and protected the front derailer.

Front and rear



Rear wheel



O-ring to hold the fender off the tire



Zip ties to hold the lower piece in place



And I added a splash guard to the front for added protection.



I mounted the tire over the v-brakes to get more clearance and I had to carve a little out of the top of the fender to get around the rack mount. It worked really well.

Tubus racks have separate fender eyelets.
But one can zip tie fenders to almost any non-seatpost rack.

I've got a fender extension attached to a rack, but the rack doesn't have that flange/mount thing like the Explorer's got. The extension is plastic, straight, about 8" long, and reaches far enough back that it goes past the rearmost end of the tire. It blocks anything that the tire would fling towards the rider's back.

I use a rear light made by planet bike. It's not very big, but it's an insane strobey discoey thing that really gets attention. It' called the Super Flash, was fifteen bucks, and well worth it. It's got a thing like a belt clip on the back that fits perfectly into one of those screw in back things that came with my Topeak Explorer. Check it out. www.planetbike.com. I've been riding with it for a couple weeks now, and it seems secure enough, but is easily removable to use on my other bike.

What kind of light is that? I've been looking for a light that'll take a single bolt like that.

That's Cateye's LD1000 (recently upgraded with brighter LEDs and called the LD1100).

Yup.

The horizontal holes looks like the mount is for a Busch & Muller 4D light (or similar European standard). The vertical holes probably fit USDOT reflectors. The LD1000 has the reflector type mount. That's how I mounted mine. Unfortunately, I don't know of very many rear taillights that have that kind of mount. Vistalite used to make them but they don't exist anymore.

Agreed. Put the rack mounts next to the frame with the fender struts on the outside. Alternately,you could use a set of clip-on fenders. I've also seen plastic strips from some Canadian company that are designed to go under a rack to act as a fender. I believe REI carried them.

I got one of these for my rack:
https://aebike.com/page.cfm?PageID=30...ils&sku=LT7309



Lets me use my Superflash when something on my rack is blocking the seatpost mount. Or lets me mount two Superflashes.