BMW K bikes (Bricks)

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1Back to top Go down   Stain removal Empty Stain removal Sat Mar 26, 2011 10:31 am

chrish8846

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I'm waiting for some output shaft parts so I have decieded to clean and paint the frame and clean up everything else. My trans case has some bad staining under the battery holder. Any idea how to remove this type of staining? A stiff wire brush and aluminum cleaner will not touch it.

    

2Back to top Go down   Stain removal Empty Re: Stain removal Sat Mar 26, 2011 12:34 pm

K-BIKE

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From the position it may be acid attack so first try would be an alkali such as ammonia solution to see if that removes it. If you want a top finish there and your gear case is black I would seriously consider repainting that area with some spray on black paint.
Regards,
K-BIKE

    

3Back to top Go down   Stain removal Empty Re: Stain removal Sat Mar 26, 2011 12:38 pm

Crazy Frog

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Stain removal Img3196wf6


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Stain removal Frog15Stain removal Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

4Back to top Go down   Stain removal Empty Re: Stain removal Sat Mar 26, 2011 12:49 pm

K-BIKE

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I am not sure if Easy Off leaves anything behind after wash off which would inhibit painting? I know ammonia doesn't which is why I use it on vehicles to deal with acid contamination. The good thing about ammonia for acid neutralisation is the salts produced from the reaction are very soluble in water but most of all the ammonia evaporates totally leaving nothing behind.
Regards,
K-BIKE

    

5Back to top Go down   Stain removal Empty Re: Stain removal Sat Mar 26, 2011 7:51 pm

chrish8846

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It is not painted , I will try the Easy Off


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Chris Hammond
1985 K100 RT sold
1992 K75RT still in Fixing mode
    

6Back to top Go down   Stain removal Empty Re: Stain removal Sat Mar 26, 2011 10:55 pm

Oldgoat

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Great tips guys! Way cheaper than some of the aircraft stuff I've been lookin into. Cool

OG

    

7Back to top Go down   Stain removal Empty Re: Stain removal Sat Mar 26, 2011 10:56 pm

Oldgoat

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Hey K are you using the ammonia straight?

OG

    

8Back to top Go down   Stain removal Empty Re: Stain removal Mon Mar 28, 2011 9:42 pm

K-BIKE

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Yes straight just as it comes out of the bottle from the hardware store, it is cheap, all of the other options can leave residue in small crevices.

I thought up the idea many years ago when a friend had a battery go bang on a Japanese bike with a pressed steel frame and as the battery was inside the frame sitting in a hole in the frame all the acid went into the frame.

What we did was wash out the frame until no more acid was detected on pH paper and then put in the ammonia and filled up again with water. That was to get ammonia right into the seams where the frame was welded together. After a few hours we again washed out the frame until the water was pH neutral and then dried it out by washing with alcohol and then drying in a warm space over an electric heater. The reason for using ammonia rather than any other alkali is that they can remain in the seams whereas the ammonia will evaporate off into the air.
Regards,
K-BIKE

    

9Back to top Go down   Stain removal Empty Re: Stain removal Tue Mar 29, 2011 5:02 am

Oldgoat

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Nice. Thanks K!

OG

    

10Back to top Go down   Stain removal Empty Re: Stain removal Tue Mar 29, 2011 7:03 pm

chrish8846

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Walmart brand oven cleaner made it look like new.It also worked on the severe grease build up on the trans housing at the clutch arm and on the rear swing arm.


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Chris Hammond
1985 K100 RT sold
1992 K75RT still in Fixing mode
    

11Back to top Go down   Stain removal Empty Re: Stain removal Wed Mar 30, 2011 8:17 am

Oldgoat

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Thanks Chrish!

OG

    

12Back to top Go down   Stain removal Empty Re: Stain removal Tue Apr 12, 2011 11:59 am

Oldgoat

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Hey K,
Tried the ammonia with some 000 steel wool and it really worked a treat! Thanks again.


Stain removal Dscf0910

OG



Last edited by Oldgoat on Tue Apr 12, 2011 3:03 pm; edited 2 times in total (Reason for editing : pic)

    

13Back to top Go down   Stain removal Empty Re: Stain removal Tue Apr 12, 2011 4:43 pm

wikur

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Jees Oldgoat!
I wish my front end was as clean as yours.Looks as new......
Nice job!
Cheers,Wikur!

    

14Back to top Go down   Stain removal Empty Re: Stain removal Tue Apr 12, 2011 5:04 pm

Oldgoat

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Hey Wikur,

It's clean b/c it hasn't been out of the driveway since I started getting her sorted out, lol! Thanks for the encouragement though. Smile


Stain removal Dscf0912
OG



Last edited by Oldgoat on Tue Apr 12, 2011 5:09 pm; edited 1 time in total (Reason for editing : Edit)

    

15Back to top Go down   Stain removal Empty Re: Stain removal Tue Apr 12, 2011 5:07 pm

yankeeone

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Hi, that looks great, did you clean the wheel with the ammonia as well?

Brian

    

16Back to top Go down   Stain removal Empty Re: Stain removal Tue Apr 12, 2011 5:13 pm

Oldgoat

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Hey Brian,
I actually used Mothers Mag & Aluminum polish for the wheels. Applied with a microfiber cloth and believe it or not Q-tips to really get down into the contours. Was a loong job, but they cleaned up fairly well. If your wheels aren't as bad as mine were you might be able to use 0000 and the ammonia. Test on a small spot first of course.

OG



Last edited by Oldgoat on Tue Apr 12, 2011 5:56 pm; edited 1 time in total (Reason for editing : edit)

    

17Back to top Go down   Stain removal Empty Re: Stain removal Wed Apr 13, 2011 6:23 pm

Oldgoat

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Just found out the snow flakes are clear coated so wouldn't recommend the steel wool. Another method I stumbled upon is a mixture of baking soda with dish detergent and than add a few drops of water and than scrub with old toothbrushes.

OG

    

18Back to top Go down   Stain removal Empty Re: Stain removal Sun Apr 17, 2011 8:37 am

Adiwan Djohanli

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OG,

Baking soda (Sodium Bicarbonate) is a good weak alkali for neutralising acid spill. Mixing it with dish detergent is good and better cleaning chemicals.

I can't wait to clean and do repainting my bike...

Well done. Cool


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Adiwan Djohanli
Jakarta-Indonesia[i]
    

19Back to top Go down   Stain removal Empty Re: Stain removal Sun Apr 17, 2011 2:35 pm

blaKey

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Hey Oldgoat, sorry to be anal about such things...but our wheels are "Y" spoke and not snowflake.

Here's what a snowflake wheel looks like (R80, R100 among others).

Stain removal Images?q=tbn:ANd9GcRthRJ79UVLuy5k0Dww6HAxxzkP90AJlNrKKe45KdMnPVHFjmEHZaR52AA



Last edited by blakey on Sun Apr 17, 2011 2:37 pm; edited 1 time in total (Reason for editing : phat phingers)


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

20Back to top Go down   Stain removal Empty Re: Stain removal Sun Apr 17, 2011 2:51 pm

Oldgoat

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Thanks for the heads up Blakey! I certainly don't think passing along the correct info is being anal buddy. Smile

OG



Last edited by Oldgoat on Sun Apr 17, 2011 3:07 pm; edited 3 times in total (Reason for editing : edit)

    

21Back to top Go down   Stain removal Empty Re: Stain removal Sun Apr 17, 2011 3:54 pm

japuentes

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Aint all snow flakes different?

    

22Back to top Go down   Stain removal Empty Re: Stain removal Sun Apr 17, 2011 7:20 pm

blaKey

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Don't know...never seen a real one.

Been to the snow, but not when it was snowing!


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

23Back to top Go down   Stain removal Empty Re: Stain removal Mon Apr 18, 2011 9:24 am

ReneZ

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Love that response Laughing


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Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Stain removal Rain
BMW K1200GT - 2003 (ZK01223)
    

24Back to top Go down   Stain removal Empty Re: Stain removal Mon Apr 18, 2011 9:31 am

charlie99

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looking good og ....nice color too ...i might have to remove the gaiters on mine ...yours looks a so much cleaner line on the front

cheers mate.... its comming along just fine

    

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