Compass Fluid?

How to keep the Cessna 170 flying and airworthy.

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Bruce Fenstermacher
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Joined: Tue Apr 23, 2002 11:24 am

Re: Compass Fluid?

Post by Bruce Fenstermacher »

Be careful should you try to clean the yellowed numbers. Tried that on a compass in my basement and nearly cleaned all the number entirely off the card. i'd start with a Q-tip and water and add mild detergent if water doesn't do what you want.
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Bruce Fenstermacher, Past President, TIC170A
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Hineywheel Bill
Posts: 93
Joined: Fri Feb 17, 2006 8:55 pm

Re: Compass Fluid?

Post by Hineywheel Bill »

Thanks, I expect that could be a tricky situation.
Owner of:
1954 C170B N1921C S/N 26066
Former owner of:
1948 C170 N3815V
1951 C170A N1490D
1946 C140 N76447
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Bruce Fenstermacher
Posts: 10313
Joined: Tue Apr 23, 2002 11:24 am

Re: Compass Fluid?

Post by Bruce Fenstermacher »

Bill, I expected the number paint to be very hard and I expected the yellow to be a superficial yellow scum. Don't recall what solvent I used first but the paint wasn't hard and it was much more effective than I wanted. The issue I then had was to carefully continue with all the rest of the card so the one area did not stand out. Overall the numbers where whiter but what I lost in boldness and crispness of the numbers negated the fact they were whiter. Cleaning the glass likely might be the only cleaning you need to do.

This compass was for my Cub. I couldn't see it any better at 4ft simulating the back seat of the Cub where I fly, than when I started, and I have yet to install it. Overall a disappointing adventure.
CAUTION - My forum posts may be worth what you paid for them!

Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
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