removing dents from a pump
03-05-23, 05:05 PM
#1
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removing dents from a pump
I paid $2 for this Ventolux and was thinking of trying to remove the dents, if that is possible. I'd love to save this for my French Criterium that I bought here years ago. For what it is worth, it does push air, but I feel it catch on the dents and I imagine that is not good for the leather(?) washer. The circled dents are very shallow.
My first thought was maybe to try some sort of expanding madrel.
My second thought was to use a dowel and sandpaper to remove the high spots.
Does anybody here have any advice? I imagine that C&V would be more likely to have experienced this, rather than the folks over in the Mechanics forum.
My first thought was maybe to try some sort of expanding madrel.
My second thought was to use a dowel and sandpaper to remove the high spots.
Does anybody here have any advice? I imagine that C&V would be more likely to have experienced this, rather than the folks over in the Mechanics forum.
Last edited by beech333; 03-05-23 at 05:10 PM.
03-05-23, 05:15 PM
#2
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yes, there are expanding mandrel type tools
there is one employed by gun smiths for shotgun barrels
it might have about the right range in case you know anyone who does gunsmithing
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yes, there are expanding mandrel type tools
there is one employed by gun smiths for shotgun barrels
it might have about the right range in case you know anyone who does gunsmithing
-----
03-05-23, 05:19 PM
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I paid $2 for this Ventolux and was thinking of trying to remove the dents, if that is possible. I'd love to save this for my French Criterium that I bought here years ago. For what it is worth, it does push air, but I feel it catch on the dents and I imagine that is not good for the leather(?) washer. The circled dents are very shallow.
My first thought was maybe to try some sort of expanding madrel.
My second thought was to use a dowel and sandpaper to remove the high spots.
Does anybody here have any advice? I imagine that C&V would be more likely to have experienced this, rather than the folks over in the Mechanics forum.
My first thought was maybe to try some sort of expanding madrel.
My second thought was to use a dowel and sandpaper to remove the high spots.
Does anybody here have any advice? I imagine that C&V would be more likely to have experienced this, rather than the folks over in the Mechanics forum.
Crimp or bevel the leading end, grease it up and tap away, the tighter the fit the better but don't get stuck.
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03-05-23, 05:29 PM
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Sockets could also be used as sized mandrels.
03-05-23, 05:55 PM
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I did that same repair on the same model pump with a wooden dowel. The alloy is super thin and very easy to push out (and to dent).
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03-05-23, 07:05 PM
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Because the metal is so thin, forget about any method that involves material removal.
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03-05-23, 07:55 PM
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Exactly right. I remove dents from trumpets like this. Solid steel mandrel inside, and either glancing planishing strokes with a polished dent hammer, or taps with a light rawhide mallet. Thin aluminum is going to take very little force to move back to straight.
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