alexk_il

I have (Shimano?) Pro XCR 445 fork with 650b/2/2" tires. The tire clearance to the top is roughly 5-7 cm, maybe more. How do I add a long-ish mudguard? Any ideas or recommendations?
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3alarmer 

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...your photo is not close enough to the fork crown to see, but I presume it's not drilled for a brake ? And it appears no eyelets on the fork ends ?
You will probably end up using one of those clip on style fenders, which are less than ideal for long term use, but will get you through a short winter.

If I wanted real fenders on that bike, I'd probably change out the fork to something with eyelets..

letrebici

Alexk, I don't see anything on your fork preventing many of the available mt bike fenders not work. Basically fender attaches with Velcro straps. across the crown at top and on each fork leg...on your rigid fork the fender will be offset from your tire more than when on a suspension fork. But fitting the fender into the gap depends on your axle width and tire clearance between fork legs. May look like a MC Dirtbike, but should work. Take a look at 'Mucky Nutz MugGuard' Long version. I have this on my suspension fork and it covers a lot. there are others.

alexk_il

​​​​​​Same fork (not mine) with photos on another forum

https://www.retrobike.co.uk/threads/...t-sold.286291/

The missing eylets are to attach the lower part of the fenders to the fork, right? I can definitely see how straps may work.

What about the top part of the fenders? ​​​​​​​Any way to insert something inside that opening of the fork tube and attach the fenders there?

alexk_il

These fenders are attached both to the middle "arch" that is missing on my fork. Without being properly attached to that arch the fenders might not stay at place and might slide down, right? Or is it still ok?

maddog34

this style attaches to the central Hole in the Crown area... the rear fender attaches to the seat post. There are also many FRAME Mounted front fenders.. they zip tie to the downtube.. I've made that type out of a 1 gallon Water jug at CX races.... 6 or 7" wide, a few holes, add zip ties to taste.... instant temporary Front Fender.

https://www.ebay.com/itm/30475780676...3ABFBM5saGrsZh

downtube42

You may be able to push a star nut up into the steerer, to provide a mounting location at the crown.

Various clamp-on mounting options could be used down close to the fork-ends, for the stays. If you want more than minimal coverage.

3alarmer 

...as suggested above, you could probably install a star nut in there with a setting tool, then bolt to that. For the fender end of the setup, probably something like a fender washer (curved by hammering it around a pipe, or pressing on a form in a vise), under the fender, with some kind of bolt that fits the star nut at the top, but has a head that won't stick out too far and interfere with your tires, if that's an issue.

If those are CF legs on that fork, I'm not sure clamping some strap for the fender mounting to them is a good idea. You'd want to pad it, and be careful of how much torque you apply.

Crankycrank

Check out suspension fork fenders that strap on to the fork tubes. Hard to tell if any of the width dimensions are the same but looks pretty close. A few examples here but plenty of other brands available. The Best MTB Mudguard 2020 – 7 Fenders In Review | ENDURO Mountainbike Magazine (enduro-mtb.com) Also small motorcycle dirt bike fenders may work. Many shops have these on the shelves so you can check them out in the flesh for fit. front fenders for 125cc dirt bikes - Search (bing.com)

cyccommute 

I’d suggest an SKS Shockboard like the one on the bike below.It slides onto a compression fitting in the bottom of the fork (no need for any starnuts) and can be removed in seconds. For my mountain bikes, it’s up and out of the way so that snow doesn’t pack into it.

For added protection, I mount a grunge board to the downtube. This grunge board was replaced with a Mucky Nutz Gut Fender with is a bit lighter and larger.

alexk_il

Thanks, your rear mudguards are also quite unusual. What are they? I might need something like that too.

cyccommute 

They are pieced together from two different fenders. The bike is a soft tail which has some movement on the rear triangle and is also a wishbone stay. Trying to put the fender through the stay and have the rear be able to move is difficult. One end of the lower fender is attached to the bottom bracket bridge via a bolt and I had a braze-on added to the middle of the seat tube so that I could bolt the fender about midway. The upper end is allowed to move, although it doesn’t. I attach the other piece of the fender to the rack with zipties.

alexk_il

OP here:

Thanks to all who replied, got some good ideas and recommendations.

Update: found these mudguards, they come with the bridge/arc adapter that can be attached to the rigid fork.

SKS Veloflexx 65



​​​​​​Looks interesting, will give them a go.