Powder coating a frame

[dylankeyter]

Johan, are you aware of the painting method Cycleart uses?

[Dirtbreath]

Calabash, you are welcome tp come and see my Yeti whose black powder coating has dulled. Have tried to polish it but it doesnt work. I have tried to post pics but you cant actually make out the fade.

[Johan Bornman]

Johan' date=' are you aware of the painting method Cycleart uses? [/quote']

 

Yup, I have 2 1/2 Cycleart paint jobs in my garage. They were spraypainted using standard automotive (stupid American word, sorry) basecoat/clearcoat paint.

 

 

[TNT1]

 

Weights a sweet 1.6km.  Any suggestions?

 

Drink less before posting?

 

[dylankeyter]

 

Johan' date=' are you aware of the painting method Cycleart uses? [/quote']

 

Yup, I have 2 1/2 Cycleart paint jobs in my garage. They were spraypainted using standard automotive (stupid American word, sorry) basecoat/clearcoat paint.

 

 

 

Interesting, and are you happy with the paint they used and the life span of it?

 

[Johan Bornman]

Johan' date=' are you aware of the painting method Cycleart uses? [/quote']

 

Yup, I have 2 1/2 Cycleart paint jobs in my garage. They were spraypainted using standard automotive (stupid American word, sorry) basecoat/clearcoat paint.

 

 

Interesting, and are you happy with the paint they used and the life span of it?

 

It's nothing unusual. All the bikes on the road are spraypainted. Am I happy with the paint? Yes.

 

Am I happy with the paint job? Yes on the one bike and no on the other bike.

 

 

[dylankeyter]

 

Johan' date=' are you aware of the painting method Cycleart uses? [/quote']

 

Yup, I have 2 1/2 Cycleart paint jobs in my garage. They were spraypainted using standard automotive (stupid American word, sorry) basecoat/clearcoat paint.

 

 

 

Interesting, and are you happy with the paint they used and the life span of it?

 

It's nothing unusual. All the bikes on the road are spraypainted. Am I happy with the paint? Yes.

 

Am I happy with the paint job? Yes on the one bike and no on the other bike.

 

 

 

Thanks very much JB, your opinion is highly appreciated.

 

[calabash]

Thanks for the awesome feedback. Have found a place in Pretoria that will a nodize the bike. These seems to be a better idea than the powder coating.

[Dirtbreath]

Thanks for the awesome feedback. Have found a place in Pretoria that will a nodize the bike. These seems to be a better idea than the powder coating.

 

Where? Do they do bikes or is this a one off?

[MTB MAN]

Need to know who does this sort of job in pe.......

[calabash]

they don't usually do bikes but are happy to do it!

here is their url: http://tshwaneplating.com/

 

[Johan Bornman]

Thanks for the awesome feedback. Have found a place in Pretoria that will a nodize the bike. These seems to be a better idea than the powder coating.

 

Oops, also a bad idea. Anodising is not recommended for anything structural such as aircraft spaceframes or indeed bicycles. It is fine for non-structural aluminium such as windoframes, picture frames and shiny bits on cars.

 

The problem with anodising is that it propagates stress cracks. Anodising is a ceramic (read glass) coating that sits, one half on top of the alu and one half inside. With the slightest bending it crazes (fine cracks radiating outwards from the point of stress). This is because it is such a hard brittle material and like glass, cracks. If you look carefully in good light at a rim you'll see those cracks around the nipple holes.

 

These little cracks propagate easily into the softer malleable alu and form large travelling stress cracks. Nipples pulling through a rim is a good example of this.

 

I like to use the analogy of a hard scab on your knee. One half is on op, one half inside your flesh. We all know what happens when you bend that knee. Same happens with aluminium. Frames flex is a functionof frame design and flex induces crazing which induces cracks.

 

You don't want your frame to crack.

 

Obviously one gets different thicknesses of anodising. The thinnest is a cosmetic colourless anodising used to make polished aluminium shiny and keep it that way. The worse is deep brown and black, very thick, very prone to cracking.

 

Paint your bike and be done with it.

 

 

[TokenFreak]

I agree with Johan that spraying your bike is by far the best bet. You are also not limited to just a few basic colours. There is a whole spectrum of colours, shades and design out there and it really aint expensive. So go the paint route people!!!! 

[Racer X]

Then how to all the pre-teated frames get away with it, all the new Santacruz's etc.

[Racer X]

The only advantage of anodising that I can see is that it is lighter.

[Johan Bornman]

Then how to all the pre-teated frames get away with it' date=' all the new Santacruz's etc.

[/quote']

What is pre-treated?