Rust on headtube lug - evaporust?
I’ve gotten plenty of rust off of components before but have yet to encounter it on a key structural point of a frame so I thought I’d ask. Doesn’t look bad other than aesthetically. Assuming it’s safe, should it be left as is and have nail polish put over it? Or is it worth putting some evaporust gel on? Steel wool first perhaps?
Rest of the frame is super clean so this is odd. Perhaps water stuck under the cable? https://cimg9.ibsrv.net/gimg/bikefor...0dba1f599.jpeg |
That's nothing.
Put the magic stuff on it and let it work, dab a little rust primer on, cover that with whatever you use to match the rest, ride. |
You're probably right about it being water, or more likely sweat, under the cable. I agree that it's very minor and will easy to clean up with Evaporust.
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Thanks guys! It being a lug just made me a little nervous as this isn’t my bike and I want the person riding it to be safe.
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before applying evaporust, sand down the edges of the rusted area to remove any loose/overhanging paint too. that will help ensure the paint that is left is well adhered to the frame and wont just chip off shortly after you touch up the area.
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Evaporust now makes a "gel" for just this sort of "spot treatment" or so I read. But you could make something like a "bandage" of guaze or cotton ball soaked in your choice of rust killer and tape it in place
Oh the OP mentions "gel" I did not read carefully...new product to me and have not tired it yet. |
Is that a 80s sub 700 Trek?
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Originally Posted by Classtime
(Post 21550287)
Is that a 80s sub 700 Trek?
https://cimg9.ibsrv.net/gimg/bikefor...ca4a42c84.jpeg |
Originally Posted by unworthy1
(Post 21550225)
Evaporust now makes a "gel" for just this sort of "spot treatment" or so I read. But you could make something like a "bandage" of guaze or cotton ball soaked in your choice of rust killer and tape it in place
Oh the OP mentions "gel" I did not read carefully...new product to me and have not tired it yet. |
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I asked about it being a Trek because maybe the "key structural part" is not so key since the head tube and head "lugs" are cast as one piece and then brazed to top and down tubes. The paint on my 85 620 seems to be the thinnest and least protective at the head tube lug.
Touch up for sure. |
Originally Posted by Classtime
(Post 21550727)
I asked about it being a Trek because maybe the "key structural part" is not so key since the head tube and head "lugs" are cast as one piece and then brazed to top and down tubes.
So the head tube is one piece with the lugs and there is effectively no brazing performed on the head tube? So then the head tube is never really a tube on its own, its just part of an intricate cast? Wow- mindblown. Is the casting process/design why in the pictures here, the lugs kiss where the frame pump peg is, even though the frame size is large enough for them to not kiss? |
I leaned of it here Fuji Otaku: The Phoenix Project - The 1985 Trek 620 Alights but I still enjoy riding my 620. It is most noticeable in the windows of the lugs that aren't windows after all.
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I use the gel with a small brass brush. Works well.
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