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Crank Polish?

Old 11-28-06, 08:36 PM
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froggmann
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Crank Polish?

Hey Everyone,

I'm in the process of restoring and old Centurian Ironman Expert I just scored. The Shimano Biopace cranks and chainrings are pretty oxidized (sp). Any suggestions on how I can shine em' up.

Thanks
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Old 11-28-06, 08:43 PM
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Simichrome is my parts polish of choice.
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Old 11-28-06, 09:52 PM
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Try this for polishing aluminum parts

Hello,

I just finished doing what Ray Dobbins has kindly explained on his beautiful website here: https://www.raydobbins.com/polishing/ . All of my Campy Nuovo Record parts on my '75 Ron Cooper have shined up like jewelry. Granted, what Ray is talking about is stripping the anodized finish off then polishing. This may be more than what you're asking for, but you'll get the ultimate in concours finish worthy of a show bike. For a daily rider, you can't go wrong with Mothers if you don't want to strip the aluminum. I get mine at O'Reillys Auto Parts. I hope this helps.

Good luck,
Jack
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Old 11-28-06, 10:45 PM
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if they are badly oxidised metal polish will will take too long. get ultra fine steel wool from the hardware store. The stuff I use is rated for finishing wood and is two grades finer than what is recommended for steel. It will shine them up pretty nice, then take the metal polish to them and they will look great.
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Old 11-29-06, 01:13 AM
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i agree with cyclotoine, and the polish i always use is called (Autosol)it is a white paste and comes in a gold and black tube (just like toothpaste)----"if its made of metal or alloy, this stuff will make it shine" !!!!
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Old 11-29-06, 07:39 AM
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I use Simichrome as well. It's good stuff.
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Old 11-29-06, 11:40 AM
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Not to hyjack but I am running 7 speed campy on one of my bikes currently and the RD looks like that one but is annodised a dull grey instead of polished... any idea what group it is? Also, I found the shifting to be poor enough to make me want to put friction shifters on instead. Though I am using a sedis chain with regina freewheel.
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Old 11-29-06, 02:50 PM
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It's true that to get a mirror finish on most parts you need to stip off the annodizing. I use a dremel with semi-abrasive tip to start with (just a bit faster), then 400grit wet sandpaper followed by 600grit wet. Finally, I use this polish called Cartier Magic which I've never been able to find again..... it's amazing stuff that obviously has a very high acid content. It literally turns raw aluminum in to a mirror. Be warned though... polished aluminum does oxidize quickly so regular upkeep is an issue after removing the annodizing.
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Old 11-29-06, 08:40 PM
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I'm going to be stirpping and polishing an old style Shimano 600 crank that I received in the mail today. I'll post pictures of the process I use. There are lots of good polishes on the market, but I'm not loyal to any particular brand. I rely on a buffing wheel and rouge to get the mirror polish on the parts and then I use polish just to maintain the finish.

Last edited by Grand Bois; 11-30-06 at 09:00 AM.
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