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What fenders for 42X650b Fuji S12 LTD?

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What fenders for 42X650b Fuji S12 LTD?

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Old 02-04-19, 04:48 PM
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bark_eater 
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What fenders for 42X650b Fuji S12 ?

I'm collecting parts for my Fuji S-12 650b conversion with 42mm tires. The wheel set is a month out, but I'm sourcing the rest of the pieces I can now. I was looking at Velo Oranges fenders. They have a 50mm Snake Skin and a 52mm Zeppelin fender. I like the Zeppelin "look" but am thinking the snakeskin will absorb more small knocks without looking beat up. Honjo's cost more than I want to spend and a quick search didn't find any 650b Tanaka available. Any suggestions?

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Old 02-04-19, 06:02 PM
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This s12 had Zeppelins:

Fuji S12-S LTD 650B conversion
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Old 02-04-19, 07:22 PM
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Thanks for the link. It looks like there's plenty of clearance to work with. The Snake Skins are 2 mm narrower, so that's not much of a difference. Is there a difference in how the fenders shed the water? Golf ball dimples, laminar flow and all that jazz?
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Old 02-04-19, 09:44 PM
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Originally Posted by bark_eater View Post
Is there a difference in how the fenders shed the water? Golf ball dimples, laminar flow and all that jazz?
Nope
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Old 02-04-19, 10:04 PM
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Well, I used Velo Orange on mine also. What thing I didn't think of until it was built was how noisy the metal fenders were. I hardly every noticed any gravel sounds on the few plastic fenders I have on a couple of other bikes. On my S12 it was a constant think each ride. Just throwing that out there.




Mine were the V.O. Zeppelins and I had to do some trimming of the rear fender to get it to fit between the chainstays as I mounted it.
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Old 02-05-19, 05:39 AM
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My bike has the same paint with 18 speeds. Do you think slightly narrower fenders would have been easier to get to your fender lines?
I wonder if a coating of spray on auto undercoater on the inside surface would quiet the fenders?
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Old 02-05-19, 06:26 AM
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Originally Posted by bark_eater View Post
My bike has the same paint with 18 speeds. Do you think slightly narrower fenders would have been easier to get to your fender lines?
I wonder if a coating of spray on auto undercoater on the inside surface would quiet the fenders?
Hey, I used to have the S12-S linked earlier in the thread. Sold it to a coworker who still rides it regularly. Nice to see that pic again.

As far as fender noise, honestly, I don't think its much of an issue. I did notice that it was a bit noisy at first, but I think after a bit of riding, the fenders sort of "bed in" WRT noise. Unless you're riding on tiny pebbles all the time, the fender noise sort of goes away. Of course, YMMV.
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Old 02-05-19, 07:08 AM
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Originally Posted by bark_eater View Post
My bike has the same paint with 18 speeds. Do you think slightly narrower fenders would have been easier to get to your fender lines?
I wonder if a coating of spray on auto undercoater on the inside surface would quiet the fenders?
Nope, for a couple or reasons. One the 42mm tires barely cleared these wider fenders. The other issue was the limited clearance under the brake bridge. Of course this was my first time putting together something like this so I've still got more to learn.

I guess if I had used some kind of spacer on the mount point between the chainstays I could have pushed the front of the fender in more towards the tire to even it out. I could have also eliminated the thick leather washers I used and that might have given me a tad more clearance by the brake bridge.
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Old 02-05-19, 02:27 PM
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I asked the folks at Velo Orange and the 52mm Zeppelins where recommended. I'm going to try a "spring thing" for the chainstay mount. Hopefully that will help with the flat spot under the brake bridge phenonium.
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Old 02-05-19, 04:12 PM
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A better solution to the spring thing is a wine bottle cork, trim to proper length and drill a hole through it. Compresses enough to move the fender when you slip a wheel out of horizontal dropouts.

Learned that trick from Neal Lerner.
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Old 02-05-19, 04:19 PM
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Originally Posted by gugie View Post
A better solution to the spring thing is a wine bottle cork, trim to proper length and drill a hole through it. Compresses enough to move the fender when you slip a wheel out of horizontal dropouts.

Learned that trick from Neal Lerner.
Thatís awesome, I have some rather sturdy ones from homebrewing beer. Iíll give it a shot
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Old 02-05-19, 04:26 PM
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Originally Posted by natterberry View Post
That’s awesome, I have some rather sturdy ones from homebrewing beer. I’ll give it a shot
Nice thing is that if it cracks or wears out, you've got an excuse to open another bottle.
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Old 02-05-19, 04:54 PM
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BTW, the Fuji S12-S is a natural 650b conversion. The geometry and clearances are as if made for 650b x 42 with fenders.
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Old 02-05-19, 06:28 PM
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Yea I'm excited about the bike, and am trying to do it up proper.
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Old 02-05-19, 06:29 PM
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Originally Posted by gugie View Post
Nice thing is that if it cracks or wears out, you've got an excuse to open another bottle.
Ha! Very true. I was thinking of my unused ones though. Uncompressed, and bigger than a typical wine cork.


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