JELF ALERT W/ Issues !!
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Topic author - Posts: 324
- Joined: Sun Jan 06, 2019 2:15 pm
- First Name: George P
- Last Name: Clipner
- * REQUIRED* Type and Year of Model Ts owned: Late '26 Touring
- Location: LakeOzark,Missourah
- MTFCI Number: 18665
JELF ALERT W/ Issues !!
Steve is on his way back to Kansas, no side trips this time. Having maybe some trouble with his Regan type magneto charging system using 1156 bulb. Normally when engine is shut down bulb turns off. This time the bulb remains on at shut down. He has unplugged the bulb so nothing runs down.
Question: What’s going on here ??
Steve is currently in Springfield Ill Walmart parking lot.
Recombinations wanted. I’m in touch with him by phone.
Question: What’s going on here ??
Steve is currently in Springfield Ill Walmart parking lot.
Recombinations wanted. I’m in touch with him by phone.
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- Posts: 16
- Joined: Tue Jun 22, 2021 10:06 am
- First Name: Bob
- Last Name: Smith
- * REQUIRED* Type and Year of Model Ts owned: 1922 Touring
- Location: Troy, NH
- MTFCA Number: 51258
Re: JELF ALERT W/ Issues !!
If the diode fails shorted then the diode acts like a short circuit in both directions. My guess it failed?
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- Posts: 45
- Joined: Mon Jan 07, 2019 10:20 am
- First Name: Paul
- Last Name: Mikeska
- * REQUIRED* Type and Year of Model Ts owned: 1914 Touring, 1917 Speedster, 1923 Farm Truck, 1926 Coupe
- Location: Arvada CO
- MTFCA Number: 15976
Re: JELF ALERT W/ Issues !!
I agree with Alden.
Diodes normally fail closed. So the battery is back feeding through the bulb and diode through the mag coils to ground.
Diodes normally fail closed. So the battery is back feeding through the bulb and diode through the mag coils to ground.
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Topic author - Posts: 324
- Joined: Sun Jan 06, 2019 2:15 pm
- First Name: George P
- Last Name: Clipner
- * REQUIRED* Type and Year of Model Ts owned: Late '26 Touring
- Location: LakeOzark,Missourah
- MTFCI Number: 18665
Re: JELF ALERT W/ Issues !!
Thanks just relayed to Steve. He’ll leave the bulb out for now. He’s checking other wires too his engine isn’t running as smooth as he thinks it should.
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- Posts: 6411
- Joined: Sun Feb 14, 2021 10:08 pm
- First Name: Pat
- Last Name: McNallen
- * REQUIRED* Type and Year of Model Ts owned: 1926-7 roadster
- Location: Graham, Texas
- MTFCA Number: 51486
- Board Member Since: 2021
Re: JELF ALERT W/ Issues !!
Running two diodes in series would protect against failure in either one. I don't know if the bulb would pass enough current to de- magnetize the magneto.
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- Posts: 4068
- Joined: Tue Jan 08, 2019 1:39 pm
- First Name: Norman
- Last Name: Kling
- Location: Alpine California
Re: JELF ALERT W/ Issues !!
If the diode is shorted, the magneto will alternately charge and discharge the battery, so it would be better to disconnect it and charge the battery before he starts out and each day until he gets home. Do not drive with lights on and crank start if possible to extend the battery charge life.
Norm
Norm
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- Posts: 472
- Joined: Sun Jan 06, 2019 8:15 pm
- First Name: Wayne
- Last Name: Jorgensen
- * REQUIRED* Type and Year of Model Ts owned: 1915 Runabout, 1918 Runabout
- Location: Batavia, IL
- MTFCA Number: 31697
- MTFCI Number: 23399
- Board Member Since: 2013
Re: JELF ALERT W/ Issues !!
I believe the bulb will also stay lit if the battery is hooked up backwards.
Wayne Jorgensen, Batavia, IL
1915 Runabout
1918 Runabout
1915 Runabout
1918 Runabout
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- Posts: 5407
- Joined: Tue Jan 08, 2019 4:56 pm
- First Name: Frank
- Last Name: Brandi
- * REQUIRED* Type and Year of Model Ts owned: Speedster (1919 w 1926)
- Location: Moline IL
- Board Member Since: 2018
Re: JELF ALERT W/ Issues !!
If need be I can get to him, 3 hr drive not problem. But what to bring?
The past is a great place and I don't want to erase it or to regret it, but I don't want to be its prisoner either.
Mick Jagger
Mick Jagger