Testing a magneto horn

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Reno Speedster
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Joined: Tue May 26, 2020 6:23 pm
First Name: Morgan
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* REQUIRED* Type and Year of Model Ts owned: 1926 Model T Speedster Project, 1922 Runabout Pickup
Location: Anchorage, Alaska

Testing a magneto horn

Post by Reno Speedster » Thu Feb 23, 2023 10:34 pm

I have a decent magneto horn that will never use since my cars have generators. I would like to test it to confirm it works before offering it for sale. Any hints on the best way to do that using my car?

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Steve Jelf
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Re: Testing a magneto horn

Post by Steve Jelf » Thu Feb 23, 2023 10:55 pm

One wire from the mag to the terminal on the horn. Ground wire from the horn body to the car body/engine/frame. Adjustment screw is in the center of the diaphragm.
The inevitable often happens.
1915 Runabout
1923 Touring


Topic author
Reno Speedster
Posts: 573
Joined: Tue May 26, 2020 6:23 pm
First Name: Morgan
Last Name: Blanchard
* REQUIRED* Type and Year of Model Ts owned: 1926 Model T Speedster Project, 1922 Runabout Pickup
Location: Anchorage, Alaska

Re: Testing a magneto horn

Post by Reno Speedster » Thu Feb 23, 2023 11:29 pm

Sounds good.


Allan
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* REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
Location: Gawler, Australia

Re: Testing a magneto horn

Post by Allan » Fri Feb 24, 2023 2:38 am

The adjustment screw is in the centre of the diaphragm, deep in the trumpet. I made a tool to do the adjustment , consisting of a socket wrench welded to a steel tube, and a T handled screwdriver with long shaft to drop down the tube.

Allan from down under.

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