The Ford Barn

Jim M · 07-26-2015, 06:56 AM

My horn on my 29 Roadster was working but not great and VERY rusty so I have it apart to clean and paint. I have a diagram I found on the Barn that is very helpful. My diaphram is VERY rusty. Is it OK to sand blast - if not what is the best way to clean it. Also the diagram mentions to paint "very lightly". Can I spray it lightly with Rustoleum or should it be hand painted? Any other tips or ideas greatly appreciated. Jim

BudP · 07-26-2015, 07:04 AM

If the contact point is worn, you might want to consider replacing it. I put a thin coat of oil on my diaphrams and wipe down.

rogerkb1936 · 07-26-2015, 10:16 AM

sand or bead blasting diaphram is very apt to warp it. sand it by hand with 80 grit or so and paint it with a rust resistant paint (rustoleum) and do not put on on overly thick coat

JohnLaVoy · 07-26-2015, 10:17 AM

Yes, the contact point on the diaphragm is what you should look at. The replacements are not too expensive and work well. I did a video on using new parts to repair a horn it is on YouTube.com/modelatimes. The other problem you might have is the electrical connections. If your connectors are weak you won't get a good connection, also if the brushes are worn out it could be a problem for you, as well as the commutator needing to be cleaned. I believe the paint was just so the diaphragm didn't rust or show up through the screen as being silver looking so rattle can a light coat there.

Jim M · 07-26-2015, 10:56 AM

John, thanks for the post and info. I clicked on the URL for the YouTube and it gave me an error message. Is something missing?? Jim

Bob C · 07-26-2015, 11:05 AM

Sponsored Links (Register now to hide all advertisements)

Here's the horn link. https://www.youtube.com/watch?v=Ss7j-3Lf1Ck

Bob

07-26-2015, 06:56 AM	#1
Jim M Senior Member Join Date: Nov 2010 Location: Sebastian, FL Posts: 479	Horn My horn on my 29 Roadster was working but not great and VERY rusty so I have it apart to clean and paint. I have a diagram I found on the Barn that is very helpful. My diaphram is VERY rusty. Is it OK to sand blast - if not what is the best way to clean it. Also the diagram mentions to paint "very lightly". Can I spray it lightly with Rustoleum or should it be hand painted? Any other tips or ideas greatly appreciated. Jim

07-26-2015, 07:04 AM	#2
BudP Senior Member Join Date: Jun 2011 Location: Oakton, VA Posts: 437	Re: Horn If the contact point is worn, you might want to consider replacing it. I put a thin coat of oil on my diaphrams and wipe down.

07-26-2015, 10:16 AM	#3
rogerkb1936 Senior Member Join Date: May 2010 Posts: 825	Re: Horn sand or bead blasting diaphram is very apt to warp it. sand it by hand with 80 grit or so and paint it with a rust resistant paint (rustoleum) and do not put on on overly thick coat

07-26-2015, 10:17 AM	#4
JohnLaVoy Senior Member Join Date: Jun 2014 Location: Rocklin, CA Posts: 779	Re: Horn Yes, the contact point on the diaphragm is what you should look at. The replacements are not too expensive and work well. I did a video on using new parts to repair a horn it is on YouTube.com/modelatimes. The other problem you might have is the electrical connections. If your connectors are weak you won't get a good connection, also if the brushes are worn out it could be a problem for you, as well as the commutator needing to be cleaned. I believe the paint was just so the diaphragm didn't rust or show up through the screen as being silver looking so rattle can a light coat there.

07-26-2015, 10:56 AM	#5
Jim M Senior Member Join Date: Nov 2010 Location: Sebastian, FL Posts: 479	Re: Horn John, thanks for the post and info. I clicked on the URL for the YouTube and it gave me an error message. Is something missing?? Jim

07-26-2015, 11:05 AM	#6
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,741	Re: Horn Sponsored Links (Register now to hide all advertisements) Here's the horn link. https://www.youtube.com/watch?v=Ss7j-3Lf1Ck Bob