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General Technical / Re: Raven Tour face lift.
« Last post by Andyb1 on Today at 08:49:05 AM »Hi Matt,
As George and Martin have indicated, a frame repaint may extend itself to a complete bike make-over!
My thoughts:
1. Blasting the frame - there are different mediums that can be used. No need to use anything too abrasive. Obviously the EBB and steering bearings would need to be removed and personally I would make up wooden ‘pegs’ to push into those large holes (and the seat stem). And put bolts in the M5 threaded holes that go into the frame. That should help to keep the medium out of the frame, but there are still small drainage holes that might be temporarily filled with epoxy? (If the blasting medium gets inside the frame it may later retain dampness and could migrate onto bearings…).
2. Paint or powder coat?
Paint would be more expensive and need primer / base coat / top coat / laqueur.
Powder coat would be applied in one go.
With both processes there are a range of types / qualities.
New Thorn frame are finished by SJS with threads being cleaned out but a frame could be painted with bolts fitted so that threads are not painted (always a danger of damaging threads if they have to be cleaned out).
The danger of having one person blast it and another paint it is that the steel can start to rust before the new paint goes on. If I get an exhaust blasted and repainted I get the person blasting it to repaint it immediately.
Alternatively…….
You have ridden a lot on that bike, and if you repaint it you will loose the patina that it must have gained from your trips. Black is an easy colour to touch up if any areas are especially bad.
As George and Martin have indicated, a frame repaint may extend itself to a complete bike make-over!
My thoughts:
1. Blasting the frame - there are different mediums that can be used. No need to use anything too abrasive. Obviously the EBB and steering bearings would need to be removed and personally I would make up wooden ‘pegs’ to push into those large holes (and the seat stem). And put bolts in the M5 threaded holes that go into the frame. That should help to keep the medium out of the frame, but there are still small drainage holes that might be temporarily filled with epoxy? (If the blasting medium gets inside the frame it may later retain dampness and could migrate onto bearings…).
2. Paint or powder coat?
Paint would be more expensive and need primer / base coat / top coat / laqueur.
Powder coat would be applied in one go.
With both processes there are a range of types / qualities.
New Thorn frame are finished by SJS with threads being cleaned out but a frame could be painted with bolts fitted so that threads are not painted (always a danger of damaging threads if they have to be cleaned out).
The danger of having one person blast it and another paint it is that the steel can start to rust before the new paint goes on. If I get an exhaust blasted and repainted I get the person blasting it to repaint it immediately.
Alternatively…….
You have ridden a lot on that bike, and if you repaint it you will loose the patina that it must have gained from your trips. Black is an easy colour to touch up if any areas are especially bad.

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