The Ford Barn

jhawk · 04-17-2016, 01:42 PM

I am looking at a complete 24 motor and transmission with no wiring what so ever, is there any way to check out the magneto in the field , the motor cranks and has compression, thanks in advance for any and all help! j

Sunnybrook Farm · 04-17-2016, 02:18 PM

I think to test the magneto for putting out the proper power it should be running but to just see if it is working, I guess you could put a meter on the magneto post or out on the firewall and see if you get anything when cranking by hand but I have never done this. Might be good to play with one that you know is working then duplicate the test on the unknown one in the field.

15max · 04-17-2016, 03:24 PM

I have hand cranked my motor with a wire laying from the mag post to the frame. A spark occurs and a moderate speed that can be seen. Certainly don't ever touch the mag post with battery current.

jhawk · 04-17-2016, 05:53 PM

I guess I got a dead mag, wire from mag post to frame, no spark, wire from post to holding end in bear hand ----nothing thanks again, miller time!!! J

redmodelt · 04-18-2016, 09:49 AM

Chances of getting a spark or feeling anything is about nill. At best you are only generating very low volts AC when hand cranking. More then likely you would need to replace the winding's anyway as the insulating is old and comes off.
I would use the meter set to AC and with the plugs out and someone else looking at the meter spin the motor and see what you get.
Point to remember; the T magneto is an AC generator with 16 magnets and 16 pole's. It does not create a steady output. The meter needle should pulse as each magnet passes a pole.

15max · 04-18-2016, 11:06 AM

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Point well taken. I have however seen a spark while cranking at moderate speed. Maybe 1/16" long.

jhawk · 04-18-2016, 03:28 PM

Thank you Thank You Thank you!!!!!!!!!!!!!!!ALL my mag aint dead after all!! thanks again Guys j

Steve Jelf · 04-21-2016, 10:15 AM

When you get the car running on battery, you can do this magneto test to find out how good (or bad) your mag is:

http://www.mtfca.com/discus/messages/179374/183126.html

jhawk · 04-22-2016, 10:41 AM

Thank you very much for your help,it was much needed! Would you know anyone up here around Beloit that is into Ts? thanks again, j

Steve Jelf · 04-22-2016, 09:17 PM

Check with Bob Bergstadt (Bob's Antique Auto Parts) just down the road from you in Loves Park. He may know somebody local who can help.

jhawk · 04-23-2016, 06:07 PM

Stave, Thanks again, if ever out this way stop in the coffee pot is always on and you would be more than welcome! jim

oldmotorsguy · 04-28-2016, 11:48 AM

If for whatever reason your magneto needs work, it can be charged with the engine in place in the car, but at best you will get it up to maybe 75% of full charge. To effect any repairs to the components, or to charge the magnets to 100% of their capacity, the engine needs to be removed, and the oil pan and transmission taken off to get at the magneto magnets and coil ring. Mostly labor involved here, some parts, all depends on the problem with the magneto.

I can do all of this for you, I live in Burlington, IL. But I charge $60/hour, just so you know.

04-17-2016, 01:42 PM	#1
jhawk Member Join Date: Mar 2012 Posts: 74	magneto ? when looking I am looking at a complete 24 motor and transmission with no wiring what so ever, is there any way to check out the magneto in the field , the motor cranks and has compression, thanks in advance for any and all help! j

04-17-2016, 02:18 PM	#2
Sunnybrook Farm Senior Member Join Date: Oct 2015 Location: Virginia Posts: 409	Re: magneto ? when looking I think to test the magneto for putting out the proper power it should be running but to just see if it is working, I guess you could put a meter on the magneto post or out on the firewall and see if you get anything when cranking by hand but I have never done this. Might be good to play with one that you know is working then duplicate the test on the unknown one in the field.

04-17-2016, 03:24 PM	#3
15max Senior Member Join Date: Nov 2012 Posts: 327	Re: magneto ? when looking I have hand cranked my motor with a wire laying from the mag post to the frame. A spark occurs and a moderate speed that can be seen. Certainly don't ever touch the mag post with battery current.

04-17-2016, 05:53 PM	#4
jhawk Member Join Date: Mar 2012 Posts: 74	Re: magneto ? when looking I guess I got a dead mag, wire from mag post to frame, no spark, wire from post to holding end in bear hand ----nothing thanks again, miller time!!! J

04-18-2016, 09:49 AM	#5
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,340	Re: magneto ? when looking Chances of getting a spark or feeling anything is about nill. At best you are only generating very low volts AC when hand cranking. More then likely you would need to replace the winding's anyway as the insulating is old and comes off. I would use the meter set to AC and with the plugs out and someone else looking at the meter spin the motor and see what you get. Point to remember; the T magneto is an AC generator with 16 magnets and 16 pole's. It does not create a steady output. The meter needle should pulse as each magnet passes a pole. Last edited by redmodelt; 04-18-2016 at 10:32 AM.

04-18-2016, 11:06 AM	#6
15max Senior Member Join Date: Nov 2012 Posts: 327	Re: magneto ? when looking Sponsored Links (Register now to hide all advertisements) Point well taken. I have however seen a spark while cranking at moderate speed. Maybe 1/16" long.

04-18-2016, 03:28 PM	#7
jhawk Member Join Date: Mar 2012 Posts: 74	Re: magneto ? when looking Thank you Thank You Thank you!!!!!!!!!!!!!!!ALL my mag aint dead after all!! thanks again Guys j

04-21-2016, 10:15 AM	#8
Steve Jelf Senior Member Join Date: Apr 2012 Location: Parkerfield KS Posts: 526	Re: magneto ? when looking When you get the car running on battery, you can do this magneto test to find out how good (or bad) your mag is: http://www.mtfca.com/discus/messages/179374/183126.html

04-22-2016, 10:41 AM	#9
jhawk Member Join Date: Mar 2012 Posts: 74	Re: magneto ? when looking Thank you very much for your help,it was much needed! Would you know anyone up here around Beloit that is into Ts? thanks again, j

04-22-2016, 09:17 PM	#10
Steve Jelf Senior Member Join Date: Apr 2012 Location: Parkerfield KS Posts: 526	Re: magneto ? when looking Check with Bob Bergstadt (Bob's Antique Auto Parts) just down the road from you in Loves Park. He may know somebody local who can help.

04-23-2016, 06:07 PM	#11
jhawk Member Join Date: Mar 2012 Posts: 74	Re: magneto ? when looking Stave, Thanks again, if ever out this way stop in the coffee pot is always on and you would be more than welcome! jim

04-28-2016, 11:48 AM	#12
oldmotorsguy Senior Member Join Date: Jun 2010 Location: Crossville, Tennessee Posts: 157	Re: magneto ? when looking If for whatever reason your magneto needs work, it can be charged with the engine in place in the car, but at best you will get it up to maybe 75% of full charge. To effect any repairs to the components, or to charge the magnets to 100% of their capacity, the engine needs to be removed, and the oil pan and transmission taken off to get at the magneto magnets and coil ring. Mostly labor involved here, some parts, all depends on the problem with the magneto. I can do all of this for you, I live in Burlington, IL. But I charge $60/hour, just so you know.