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Getting Ready to Attempt some Restorations - Newbie
Page 4 of 4
Page 4 of 4 • 1, 2, 3, 4
Re: Getting Ready to Attempt some Restorations - Newbie
gkamysz wrote:Cribbs74 wrote:Umm no, colored cases are dyed and anodized. Plain cases aren’t dyed, just anodized. Other than color the anodizing process is the same.
I'm familiar with anodize. If you do a conductivity test, you'll find natural cases are conductive and colored cases are not. Natural cases also scratch much more easily compared to colored cases. I don't see any evidence natural cases are anodized. The conductivity is the most telling. I could be convinced that they were conversion coated which would also prevent corrosion, is conductive, and fast(cheap).
It took me a while to finish my post so I didn't see the post above.
Yeah I did some research to check my memory and since I was glaringly wrong I removed the post so that info wasn’t floating around leading folks astray.
Cribbs74- Moderator
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Re: Getting Ready to Attempt some Restorations - Newbie
I have no evidence to back it up, but I am 100% certain that I have read that the plain uncoloured Cox engines are anodised. I'm not going to debate it, but I believe the evidence is clear that the surface is hardened, having first-hand experience in polishing cases and tanks only to find that they then tarnish and mark far more easily than prior to polishing. I can't imagine Cox anodising black and gold cases, which would harden the bearing surface, and not treating the uncoloured cases in the same way to maintain consistent durability.
Oldenginerod- Top Poster
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Re: Getting Ready to Attempt some Restorations - Newbie
That was my thoughts exactly Rod. Why have some engines last longer than others. Seems like poor quality control. I can’t dispute Larry Renger and Mudhen. Both worked at the Cox factory. I thought I had read somewhere that all cases were anodized, which would make total sense, but apparently they stopped doing it in the 60’s.
Who knows, I suppose you could say who cares....
I still wouldn’t polish a case.
Who knows, I suppose you could say who cares....

I still wouldn’t polish a case.
Cribbs74- Moderator
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Re: Getting Ready to Attempt some Restorations - Newbie
Cribbs74 wrote:
I still wouldn’t polish a case.
Guilty as charged. They do come up looking nice with a decent shine-up. I certainly wouldn't alter a bearing surface by polishing. I'd just do the external "bling". I use a stitched rag buff on my bench grinder, along with Josco brown polishing compound for Brass, Copper, Aluminium. Babe Bee tanks come up particularly nice. You need to hold on tight, or your freshly polished piece can get slammed on the floor or wall if the buff grabs.
Oldenginerod- Top Poster
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Re: Getting Ready to Attempt some Restorations - Newbie
Cribbs74 wrote:That was my thoughts exactly Rod. Why have some engines last longer than others. Seems like poor quality control. I can’t dispute Larry Renger and Mudhen. Both worked at the Cox factory. I thought I had read somewhere that all cases were anodized, which would make total sense, but apparently they stopped doing it in the 60’s.
Who knows, I suppose you could say who cares....![]()
I still wouldn’t polish a case.
Ron, you are right with early made engines. They were clear anodized:
https://www.secret-bases.co.uk/wiki/Cox_model_engine


Levent Suberk- Diamond Member
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Re: Getting Ready to Attempt some Restorations - Newbie
Bretherman , i know your new here but to let you know there is NO disrespect to the thread going off topic , it happens ALOT around here






getback- Top Poster
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Re: Getting Ready to Attempt some Restorations - Newbie
Sorry! yeah sometimes it does.
Cribbs74- Moderator
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Re: Getting Ready to Attempt some Restorations - Newbie
Oldenginerod wrote:Cribbs74 wrote:
I still wouldn’t polish a case.
Guilty as charged. They do come up looking nice with a decent shine-up. I certainly wouldn't alter a bearing surface by polishing. I'd just do the external "bling". I use a stitched rag buff on my bench grinder, along with Josco brown polishing compound for Brass, Copper, Aluminium. Babe Bee tanks come up particularly nice. You need to hold on tight, or your freshly polished piece can get slammed on the floor or wall if the buff grabs.
I should have worded that better, I mean’t I wouldn’t polish the bearing surface within the case. Anodized or not.
Cribbs74- Moderator
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Re: Getting Ready to Attempt some Restorations - Newbie
Ok y have Somting To say here From what I have learned with the multiple tests it is better lapp the crank inside its crankcase if its nead Most custom engine modified do that and kustom kraftmanship Don't hesitate to explain clearly why he is doing it its wy som engines perfome Extremely good an guy using them win
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Re: Getting Ready to Attempt some Restorations - Newbie
Last edited by davidll1984 on Thu Jan 21, 2021 10:21 pm; edited 2 times in total
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Page 4 of 4 • 1, 2, 3, 4

» Warming up.....aka Getting ready to get ready.
» Cox restorations for the week
» My First Balloon Tank Attempt
» Micro 12VDC Generator with a Cox .049 Sure Start Diesel Engine
» Cox Sopwith Camel almost ready
» Cox restorations for the week
» My First Balloon Tank Attempt
» Micro 12VDC Generator with a Cox .049 Sure Start Diesel Engine
» Cox Sopwith Camel almost ready
Page 4 of 4
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