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Spray painting and polishing

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Frog
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Joined: 10 Jan 2011
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PostPosted: 12:21 - 10 Aug 2011    Post subject: Spray painting and polishing Reply with quote

Hi all,

I'm part way through spraying and polishing various bits of my CB400, and have a couple of questions.

Pease note, however, that I am a complete newbie. I've never attempted anything mechanical before, and am learning on the job Shocked

1. I've removed all the rust off the shocks (without removing them from the bike, as I believe I need a spring compressor to put them back together again?), but they rusted up within days (should have thought of that). What would you coat them with?

2. Respraying the rear cowl and front fender is going pretty well so I'm going to attempt the tank next. It's mainly crazy paved lacquer, but with big chips that go through to the metal. Presumably I just primer and filler primer the chipped bits, scrub down through the lacquer, respray, then petrol resistant lacquer on top, or do I need to take it all back to metal because of the depth of the chips?

3. I need to do something to the forks, the paint is chipped. I'm not sure about spraying them (although this is an option if it turns out to be be the best option), but instead have thought about polishing. Would they need a protective coat once stripped, sanded, and polished using autosol?

Cheers in advance. Thumbs Up
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CBT 23/09/10 - Theory 19/03/11 - Mod1 19/04/11 - Mod2 06/05/11
Bikes: CBF125 (sold 30/10/10-25/09/12) - CB400 24/06/11 (broken) Sad - ER6-f 25/09/2012 Very Happy
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hazza
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PostPosted: 12:28 - 10 Aug 2011    Post subject: Reply with quote

1. they will rust up unless you coat them with something. The units will come off as one without the need for a spring compressor. have you looked for new shocks on ebay?

2. As long as its flat and you can't feel any difference in height it should be okay. You may think you have finished the prep until the first coat of primer goes on and you see all the lumpy bits. Don't be tempted to carry on and things will only look worse.

3. yes and no. You don't have to but unless you want to re-polish them every time it rains then i would. (when i did mine, i didn't, and they stain quite easily). Also doing the polishing by hand will be very time consuming you ideally need a buffer.
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3 Honda NC50's(Sold)-->'72 Puch Maxi S (Sold, want it back!)--> '90 Yamaha RXS 100 (Stolen)--> '87 Honda Cub 90(Sold) --> '95 Kawasaki Eliminator (Sold) --> '98 Bandit 600 (Sold) -->'07 SV650S (Current)
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Frog
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PostPosted: 14:03 - 10 Aug 2011    Post subject: Reply with quote

hazza wrote:
1. they will rust up unless you coat them with something. The units will come off as one without the need for a spring compressor. have you looked for new shocks on ebay?


I have, but the options seem to be genuine honda for £465 ish, or cheap and cheerful. Is it possible to replace the springs but keep the shocks? If not, I might have to paint them, but that'll be impossible
without taking the springs off I would have thought.

I'll keep looking though.

hazza wrote:
2. As long as its flat and you can't feel any difference in height it should be okay. You may think you have finished the prep until the first coat of primer goes on and you see all the lumpy bits. Don't be tempted to carry on and things will only look worse.


I found out this! Sad
I am about to sand my front fender basically back to plastic I think to get rid of the cock up I made using too large a grit to remove the paint Embarassed

I decided it would rectify itself as I put on a couple of coats of paint, sanding in-between, but it's getting worse, so off it comes...

That sounds cool though... I was dreading taking the whole tank back.

hazza wrote:
3. yes and no. You don't have to but unless you want to re-polish them every time it rains then i would. (when i did mine, i didn't, and they stain quite easily). Also doing the polishing by hand will be very time consuming you ideally need a buffer.


Ok, will do. Any ideas on what with? Just clear lacquer maybe...?
____________________
CBT 23/09/10 - Theory 19/03/11 - Mod1 19/04/11 - Mod2 06/05/11
Bikes: CBF125 (sold 30/10/10-25/09/12) - CB400 24/06/11 (broken) Sad - ER6-f 25/09/2012 Very Happy
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hazza
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PostPosted: 14:06 - 10 Aug 2011    Post subject: Reply with quote

Personally for that price, id go cheap and cheerful and if they last two winters you have your monies worth.

Clear coating should be fine.

Good luck

Thumbs Up
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3 Honda NC50's(Sold)-->'72 Puch Maxi S (Sold, want it back!)--> '90 Yamaha RXS 100 (Stolen)--> '87 Honda Cub 90(Sold) --> '95 Kawasaki Eliminator (Sold) --> '98 Bandit 600 (Sold) -->'07 SV650S (Current)
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Frog
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PostPosted: 14:15 - 10 Aug 2011    Post subject: Reply with quote

Cheers hazza, I'll give that a go.
When this bloody wind stops so that my shed is safe to go in Rolling Eyes
____________________
CBT 23/09/10 - Theory 19/03/11 - Mod1 19/04/11 - Mod2 06/05/11
Bikes: CBF125 (sold 30/10/10-25/09/12) - CB400 24/06/11 (broken) Sad - ER6-f 25/09/2012 Very Happy
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