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I need your help, what is this called?

Old 02-24-22, 12:26 PM
  #1  
passive jay
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I need your help, what is this called?

I recently replaced my stock front fork with a dual spring front fork. The issue I have run into is that the fender no longer has a place to bolt down to. Most of the pictures I have seen of bicycles using this style of front fork do not use a front fender at all, but I have seen a couple that do. As far as I can tell from the picture instead of having one strut reaching down to the hub area and the other end secured to the fork they have two struts reaching down to the hub. My problem is I have no clue what that style is called so it is hard to google for it. Can someone point me in the right direction?
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Old 02-24-22, 12:44 PM
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indyfabz
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What picture?
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Old 02-24-22, 02:03 PM
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biker128pedal
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Originally Posted by indyfabz View Post
What pictures?
Corrected.

And I agree. But I’ll guess so may be here will help.

https://enduro-mtb.com/en/the-best-mtb-mudguard-review/
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Old 02-24-22, 02:13 PM
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Originally Posted by passive jay View Post
The issue I have run into is that the fender no longer has a place to bolt down to.
There are many flexible plastic mud guard options that zip tie to a fork. Some even fasten into the empty hole of the neck bottom.
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Old 02-24-22, 02:50 PM
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passive jay
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Originally Posted by indyfabz View Post
What picture?
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Old 02-24-22, 03:07 PM
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Originally Posted by passive jay View Post
So your fender in this picture is not secured to the fork and is just balancing there? It looks secured with 2 separate mounting points.
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Old 02-24-22, 03:15 PM
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passive jay
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Originally Posted by mstateglfr View Post
So your fender in this picture is not secured to the fork and is just balancing there? It looks secured with 2 separate mounting points.
i have no clue, that is what I am asking. This is not my bike, it just has the same front fork, I am trying to figure out how they mounted the fender.
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Old 02-24-22, 03:47 PM
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Originally Posted by passive jay View Post
i have no clue, that is what I am asking. This is not my bike, it just has the same front fork, I am trying to figure out how they mounted the fender.
You can see two supports, one in front of the fork and one behind. What you can’t see is the center support which commonly uses a star nut driven into the steerer tube from the bottom. Line up the fender, drill a hole, and use a button head screw from underneath.
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Old 02-24-22, 04:12 PM
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Originally Posted by Kedosto View Post
You can see two supports, one in front of the fork and one behind. What you can’t see is the center support which commonly uses a star nut driven into the steerer tube from the bottom. Line up the fender, drill a hole, and use a button head screw from underneath.
Yes, I think that is the proper solution. Here’s the OP’s fork below; there is no brake bolt hole in the fork crown, so the idea to set a star nut into the steerer tube from the bottom, and drilling the fender for a bolt to fix into the star nut makes sense. It looks like fender struts can be mounted on the fork linkage bolts, though they may need Delrin washers (and longer bolts to accomodate the strut and washers) to prevent binding the linkage when retightened.


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Old 02-24-22, 04:14 PM
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passive jay
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lol, i am starting to see why most people do not use a fender with this fork.
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Old 02-24-22, 06:20 PM
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What a fascinating problem. There's no way to mount it to the fork crown or the spring stays without something binding as it moves. You would have to have the stays mounted only to the link, that is the only way to keep it on center with the hub. I think that's why the example further up has two pairs of stays - it has to. There's not a ton of clearance even just for the travel much less for the fender.
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Old 02-25-22, 01:02 AM
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Yes I agree with above. A star nut would provide a fastening point. Need the correct size and care drilling the fender hole. I think a 1 inch may work and saw one on Amazon. link below with picture. To find the hole location in the finder I’d take a scrap D cut off the head. Then sharpen to a point. Thread it in so the point sticks out. Raise finder up agains it and tap the underside of the fender so the point makes a mark. There are other ways.

Dia Compe 1" Headset Star NUT https://www.amazon.com/dp/B004GSQ73Q...53V8ZGTBTCM5RQ
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Old 02-25-22, 04:23 AM
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passive jay
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thanks for the advice everyone!
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Old 02-25-22, 07:14 AM
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If the OP is looking for the style of fender pictured, a star nut into the bottom of the fork would be a bad plan.

Because of the suspension design, the wheel axle will be moving closer to the steerer tube every time the suspension is activated. The two support struts will then be crushed.

Besides, why not just go with an expanding plug which wouldn't be as permanent?
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Old 02-25-22, 07:18 AM
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Originally Posted by Moles View Post
If the OP is looking for the style of fender pictured, a star nut into the bottom of the fork would be a bad plan.

Because of the suspension design, the wheel axle will be moving closer to the steerer tube every time the suspension is activated. The two support struts will then be crushed.

Besides, why not just go with an expanding plug which wouldn't be as permanent?
Ah yes good point. It has to float and pivot on the two points. I take back what I said. It has to float.
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Old 02-25-22, 08:22 AM
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Originally Posted by Moles View Post
If the OP is looking for the style of fender pictured, a star nut into the bottom of the fork would be a bad plan.

Because of the suspension design, the wheel axle will be moving closer to the steerer tube every time the suspension is activated. The two support struts will then be crushed.

Besides, why not just go with an expanding plug which wouldn't be as permanent?
Ah, yes…I think you’re right, too! That’s why the pic of the fendered bike has two pairs of front struts, fore and aft. Also the idea to use an expansion plug is good, not least because it would be easier to install.
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Old 03-01-22, 01:45 PM
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Maybe I'm misunderstanding the problem, but can't P-Clamps be used if there are no attachment points?
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