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Old 08-28-17, 01:56 PM   #1
jefnvk
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Fenders around disc brakes?

Fairly simple, just as the question says: for those of you with disc brakes on your bikes, how do you fit fenders, specifically the front? I tried mocking up an old set I have on the new bike, and while I cut the stays too short on the last bike to be able to reuse them, I did notice I am going to have fitment issues on the front. Is it better to try to bend the stay around the caliper, or to uses a spacer on the left side of the fork? Sorry if this is common, the couple old threads I found were all barren of images thanks to Photobucket.

Also, I'm not really interested in using the MTB style beavertails, looking for a full set.
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Old 08-28-17, 02:24 PM   #2
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Fairly simple...
If you have interference with your fender, it looks better to space it out than bend below the caliper - easier too. An even nicer looking solution is a longer metal fender.

Velo-Orange fenders are essentially Honjo fenders for half the price. Classic metal (Fe,Al) fenders are generally ~20cm longer F&R than plastic fenders (fender covers more of the tire circumference), and the stays/hardware are a little better WRT to appearance and rigidity. The length of VO fenders causes the front stay to mount to fork at a lower angle - the stay will pass below the disc brake caliper in a straight line without any bending or spacer needed. I have two bikes with VO fenders mounted to fork with disc brake and no interference issue.
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Old 08-28-17, 02:58 PM   #3
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Velo-Orange fenders are essentially Honjo fenders for half the price. Classic metal (Fe,Al) fenders are generally ~20cm longer F&R than plastic fenders (fender covers more of the tire circumference), and the stays/hardware are a little better WRT to appearance and rigidity.
Hmm, I was going to ask about metal. Maybe I'll have to explore that path.
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Old 08-28-17, 04:54 PM   #4
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If your bike has mid-fork mounts for low rider racks you can you them instead of the eyelets at the bottom of the fork.
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Old 08-28-17, 10:33 PM   #5
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bend it, baby, bend it!
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Old 08-29-17, 07:23 AM   #6
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dont have a photo now, but on my Troll, for the front fender, to get around the disc issue, a mechanic showed me how to used small metal tabs, about 2 inches long, with holes at either end. One end bolted to the eyelet hole thingee on the fork, and the tab faces backwards and allows the fender stay to bolt to it. Will try to rmemeber to put up a closeup of it at some point. Worked well and never got loose or anything since I installed it last year.
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Old 08-29-17, 09:08 AM   #7
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Originally Posted by gerryl View Post
If your bike has mid-fork mounts for low rider racks you can you them instead of the eyelets at the bottom of the fork.
I thought about that, but I want to leave that free for an inevitable front rack.

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bend it, baby, bend it!
Ha, I don't trust my hands to make it look that nice!

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Worked well and never got loose or anything since I installed it last year.
I think we are thinking of the same thing. I'm gonna give that a go
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Old 08-29-17, 10:22 AM   #8
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Bent mine. Not as nice as Saddlesores, but it did the job.
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Old 08-29-17, 11:07 AM   #9
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We have spacers in the LBS, you can put one around a longer bolt to have the mudguard strut pass outside of the disc brake caliper.

SKS, Bontrager-trek,planet bike.. are all in the shop.
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Old 08-29-17, 11:23 AM   #10
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SKS, Bontrager-trek,planet bike.. are all in the shop.
Hmm, didn't even think to give the LBS a shot for the adapters, was just gonna hit up the hardware store.

As an aside, do you notice much of a quality difference between the SKS and Planet Bike? I've got all SKS so far, like them, but not much available locally and I leave for the next trip on Thursday.
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Old 08-29-17, 11:43 AM   #11
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plastic bushings that have a hole for a 5mm bolt then, you decide how long it needs be..

We get Aluminum ones, 3cm long..







....

Last edited by fietsbob; 08-30-17 at 09:34 AM.
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Old 08-29-17, 12:29 PM   #12
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Hmm, didn't even think to give the LBS a shot for the adapters, was just gonna hit up the hardware store.

As an aside, do you notice much of a quality difference between the SKS and Planet Bike? I've got all SKS so far, like them, but not much available locally and I leave for the next trip on Thursday.
I believe all of the PB fenders are plastic, whereas SKS's pricier fenders have an aluminum laminate in the fender (which used to be called Chromoplastic). SKS does sell cheaper all-plastic fenders too. I have used both - the all-plastic fenders are less rigid than the aluminum laminate models, which you notice mainly when installing them, as they flop around and make an often difficult fitting job more difficult.

Last edited by seeker333; 08-29-17 at 12:38 PM.
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Old 08-29-17, 05:24 PM   #13
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I put sks on my Troll, but have PB ones on other bikes. The PB ones seem fine, I do however have a set of sks from about 1991 that lasted really well and I put them on a commuting bike for my wife, so they do seem to be well made.
The SKS ones I put on the troll had the bonus of being silver, which I liked a lot from an aesthetic pt of view given that the bike is all black, plus the 26x45mm size were on sale, so a bonus.

the main issue between the two is the sks strut system--it may be more robust, but having to cut the stays at the top at just the right length to fit into their plastic closed ended doohickies that fit onto the fender, is a pain in the arse compared to the open ended plastic doohickies on PB or other fenders. Because of the cuttng aspect, I purposely went conservative and left lots of room between my 2in tires and the fender, thinking that if I really wanted to, I could cut them down further, but you cant grow them longer , so you have to make a decision.
It didnt bother me cuz lots of room between tire and fender is easier for mud, and I didnt give a hoot of how it looks, in fact I like how it looks and fits the use of the bike more.
**also, the troll has horizontal dropouts, so to remove the rear wheel without fender getting in way, you do need a certain amount of space, and mine works fine likt it is, can remover rear wheel with tire inflated no problem.
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Old 08-29-17, 05:39 PM   #14
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Ha, I don't trust my hands to make it look that nice!
yes, that is impressive work, it looks great. well done.
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Old 08-29-17, 07:44 PM   #15
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doesn't have to be so fancy, just a simple bend below the
caliper mounting tab. i would not want spacers to move
the strut out. why? .....OCD! how annoying would it be
to see a non-symmetrical fender strut every time you look
down!


but if you do spend some time to get those lovely bends,
think how awesome it would look with flower spokes!
(photo stolen from internet)

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Old 08-29-17, 08:08 PM   #16
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Originally Posted by saddlesores View Post
doesn't have to be so fancy, just a simple bend below the
caliper mounting tab. i would not want spacers to move
the strut out. why? .....OCD! how annoying would it be
to see a non-symmetrical fender strut every time you look
down!


but if you do spend some time to get those lovely bends,
think how awesome it would look with flower spokes!
(photo stolen from internet)

Just put spacers on both sides. Bent fender stays clash with straight spokes. Everyone knows that.
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Old 08-29-17, 08:11 PM   #17
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I bend mine, slide a 10mm box-end wrench around the stay and use that to make the bends around the caliper. Works pretty good but it does seem to make the stay more flexible that when it's just straight.

If your bike has mid-fork eyelets you can cut the stay short and mount it there on the caliper side while leaving the other side full length and mounted at the dropout eyelet. Having one short stay makes the fender significantly stiffer.
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Old 08-29-17, 11:52 PM   #18
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P clamps some place or another, maybe even the rack.
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Old 08-30-17, 07:00 AM   #19
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Thanks all. I'm not OCD, so I just went spacer. Turns out an aluminum spacer for a 10 machine screw at a half inch long was about the perfect fit for a 5mm bolt and the length I needed, as my local hardware stores still do not have an extensive selection of metric bits...

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Old 08-30-17, 07:14 AM   #20
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And @saddlesores: those wheels, just, no. No, to the no.

Although, they are 36 spokes, so I guess fine for touring
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Old 08-30-17, 07:16 AM   #21
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that was a nice easy fix, glad it worked out simply.
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Old 08-30-17, 08:44 AM   #22
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I installed a pair of Woody's fenders on my girlfriend's Safari for her and I ended up bending both sides of the stays as a get around for the disc brake. Sorry about the pic quality, but I think it turned out to be a pretty clean looking.
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Old 09-09-17, 05:42 PM   #23
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finally found this photo showing the piece I used, I know you did differently, but figured I show it anyway
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