Fender clearance

Sam Perez

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Oct 15, 2020, 10:16:52 AM10/15/20

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I have a steel frame that was designed around a 650x42 tire, I wanted to go a little wider fir more buoyancy.so I tried a pari moto 48. Is this enough clearance? the tight spot is in the crimped fender /chain stay area. What's good clearance? What's minimal clearance ?

IMG_20201014_212503.jpg

Brian Campbell

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Oct 15, 2020, 10:55:26 AM10/15/20

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Not an expert but it looks good to me. Seems you are right at what I would consider minimal clearance.

Patrick Moore

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Oct 15, 2020, 10:56:13 AM10/15/20

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It would be better to have a bit more clearance at the side, even for a rear tire, but the critical gap is at the top of the tire, and as long as this is close to 5 mm and as long as the tire has no knobs, I think it will be fine. I have slightly less than 5 mm clearance under the top of my rear fender over the Big One, and it has caused no problems. Of course, you'll want a much wider safety margin in front.

On Thu, Oct 15, 2020 at 8:16 AM Sam Perez <sam.per...@gmail.com> wrote:

I have a steel frame that was designed around a 650x42 tire, I wanted to go a little wider fir more buoyancy.so I tried a pari moto 48. Is this enough clearance? the tight spot is in the crimped fender /chain stay area. What's good clearance? What's minimal clearance ?

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Patrick Moore

Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum

Sam Perez

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Oct 15, 2020, 11:10:57 AM10/15/20

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This is the chain stay. Any thoughts on the rolled edges on the near sidewalls.

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Patrick Cronin

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Oct 15, 2020, 11:51:22 AM10/15/20

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Your fender will eventually rub off the paint on the inside of both chainstays. Rust will likely develop afterward.

-Patrick

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