brake/clutch fluid resistant paint

discussion about the 750 Sport and '89/'90 900SS, which share many mechanicals with the Paso series
HIGHWAY89
paso grand pooh-bah
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model: 900 SS
year: 1989
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Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

Wow , theres some nice covers right there, I'm waiting for a spare cover to turn up soon,my thoughts are to drill one of them. Is the powdercoat brake fluid resistant?i wreckon the polished units look sweet but actually on the bike i think i like the black.Letting some heat out sounds good, dust as well , considering doing myself on a drillpress or is that a tried and stupid idea?
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Frank.61
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model: 750 Paso
year: 1989
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Re: brake/clutch fluid resistant paint

Post by Frank.61 »

Powdercoating is brake fluid resistant (tested).

Frank
Bimota SB4-S - 1984
Ducati Paso 750 - 1989
Suzuki SV1000S - 2008
Ducati Monster 796 abs - 2010
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paso750
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Re: brake/clutch fluid resistant paint

Post by paso750 »

I've read that powdercoating isn't brake fluid resistant and can crinkle but this weekend I unpacked a pair of Brembo calipers that I had powdercoated a couple of years ago. They were wrapped in plastic foil. It seems there was still a little bit of brake fluid in the calipers which spilled. They may have been stored like this for a year or more and the powdercoating is still fine. Certainly over the years also the materials used for powder coating have developed and improved. :thumbup:
HIGHWAY89
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year: 1989
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Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

Ok I will probably change track there and try to go for pc , and make a decision on the drilling, thanks
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Frank.61
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Re: brake/clutch fluid resistant paint

Post by Frank.61 »

Hey HIGHWAY89,

With regard to the brake-fluid-resistant paint/powder coating discussion, one last contribution.
I assume that the brake fluid will only contact the paint/powder coating for a very short time: during bleeding and should not take longer than let's say 10 seconds.
If you spill it, you wipe it off (if possible rinse it with some water, neutralizing the brake fluid).
Like this modern powder coating will last forever.

Almost all powder coatings consist of polyester compounds that must be able to withstand this.
I did tests with immersion in brake fluid DOT4 for 1 hour, 1 day and 1 week.
1 hour: no effect,
1 day: almost nothing to see, however a small gloss difference,
1 week: surface has become dull and the layer seems to have softened slightly (temporary).

If you want to avoid this, you should use an acrylic (powder coat) finish, which is also insensitive to brake fluid for a longer period.
Acrylic finish is used as a clear coat on e.g. rims (i did use this on my rims since I wanted maximum brake fluid resistance).

If you want the ultimate in brake-fluid-resistance (e.g. inside of brake/clutch calipers) there is only 1 coating you could use: ceramic coatings (best known and an abundance of colors: Cerakote).
This is completely insensitive to brake fluids.
I've used it on my headers and also on a set of (extra) mufflers but it is also ideal for engine covers.
The only drawback I find is its higher cost and also the critical preparation of the parts beforehand.
Also: it's it is also water-thin, but then that can be both an advantage and a disadvantage (depending on the application).
As far as wear resistance is concerned: I have read a lot about it, but still have little experience with it so far.

For me: if with some caution I would be tempted to opt for a "simple" spray can paint matt or satin black for, let us say 10 usd.
If it has diminished over time, it is easily removed again (try that with ceramic coating!) and sprayed like new for next to nothing.
Or you are a perfectionist like some of us (yep guilty to) and you pay handsome money for a -slightly- better solution. :banghead:

As Einstein already said: everything is relative :thumbup:

Whatever makes you happy!

Frank
Attachments
example of Cerakote on an engine
example of Cerakote on an engine
cerakote mx.jpg (38.54 KiB) Viewed 5079 times
Bimota SB4-S - 1984
Ducati Paso 750 - 1989
Suzuki SV1000S - 2008
Ducati Monster 796 abs - 2010
HIGHWAY89
paso grand pooh-bah
Posts: 520
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

Thanks for the extra twist Frank, that looks like a awesome product as well. I really don't know what I'll do ,there some knowledge and options aplenty to keep me thinking
HIGHWAY89
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Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

IMG_29052020_213410_(1024_x_768_pixel).jpg
IMG_29052020_213410_(1024_x_768_pixel).jpg (243.76 KiB) Viewed 5048 times
IMG_29052020_213444_(1024_x_768_pixel).jpg
IMG_29052020_213444_(1024_x_768_pixel).jpg (210.26 KiB) Viewed 5048 times
I just opened the package from Rudy, looks sweet, tomorrow I have a go at checking out the slave piston, once again from Rudy always good parts and no mucking around
HIGHWAY89
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Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

IMG_30052020_183541_(1024_x_768_pixel).jpg
IMG_30052020_183541_(1024_x_768_pixel).jpg (245.62 KiB) Viewed 5036 times
And again the piston was quite stuck in the bore, air alone didn't work air and a rubber persuader didn't work but the added gentle heat on the boss released it in a big hurry, lucky I caught it in the guts not the head
HIGHWAY89
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Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

The bore looks good and the piston looks good, a new seal and a grease should be all it needs, l think this unit cant be stripped any more than what you see and this is different to the piston I have in the 900 but basically same, I think Rudy said this is off a paso
Spunout
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Re: brake/clutch fluid resistant paint

Post by Spunout »

What about a black anodized finish?
HIGHWAY89
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Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

Cheers anodise sounds like another good option, I think my calipers are anodized and looking good after 31 years
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Frank.61
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Re: brake/clutch fluid resistant paint

Post by Frank.61 »

Hi boys,

Casting qualities of aluminium usually contain a higher percentage of silicon.
This silicon makes it difficult to obtain an optically good anodizing layer.
If you let them anodize anyway, very likely the surface will have a rough grey/black appearance (charcoal look).
Best (looking) results with anodizing is achieved when using (modern) billet qualities.

Frank
Bimota SB4-S - 1984
Ducati Paso 750 - 1989
Suzuki SV1000S - 2008
Ducati Monster 796 abs - 2010
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Duc906
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Re: brake/clutch fluid resistant paint

Post by Duc906 »

+1 for the calliper paint. Used it on mine 9 years ago and they still look good. As Gerhard said you have to bake it on as per the instructions.
HIGHWAY89
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year: 1989
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Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

Taking all these ideas and options into account I'm starting to lean towards the caliper paint myself thanks guys
HIGHWAY89
paso grand pooh-bah
Posts: 520
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
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Re: brake/clutch fluid resistant paint

Post by HIGHWAY89 »

Having a little look at how to drill this, exact location and size and not really stuffing things up I don't think at this stage I will vent this , it's a bit more complicated than I originally thought
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