TrueFire Timer Rotor Part Source

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J1MGOLDEN
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TrueFire Timer Rotor Part Source

Post by J1MGOLDEN » Tue Oct 22, 2019 11:53 am

I have been helping friends with Model T electrical problems for about 40 years now.

I have helped a dozen or so with TrueFire ignition problems and most were simple to understand and repair.

Two of my friends have had the Timer Rotor do a melt down, due to the engine overheating, in this hotter than usual summer.

A few years ago, I built a test set to test the TrueFire parts and in each case the main component coil box tested OK.

The related melt down Timer cases have not been tested and still may be OK.

The problem is finding a source for the Timer Rotor, as no dealer seems to have any rotors and/or (or timer cases).

Does anyone know of a source?

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cudaman
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Re: TrueFire Timer Rotor Part Source

Post by cudaman » Tue Oct 22, 2019 1:51 pm

Do you mean the plastic piece with the two magnets that fits on the end of the camshaft? What is the failure mode, does the plastic split, or do the magnets come loose?
Mark Strange
Hillsboro, MO
1924 Cut-off Touring (now a pickup)


Topic author
J1MGOLDEN
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Re: TrueFire Timer Rotor Part Source

Post by J1MGOLDEN » Tue Oct 22, 2019 2:31 pm

Yes, that plastic piece with the magnets is required.

The magnets hold their strength forever!

The magnets shift to make things worse.

The plastic does a melt down.


Les Schubert
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Re: TrueFire Timer Rotor Part Source

Post by Les Schubert » Tue Oct 22, 2019 4:00 pm

I guess I have been lucky having run one since 2001 on my ‘13. I have a spare unit and just examined the rotor and I can now understand the risk. I have been thinking about some solutions. The easy one would just be to make some new plastic ones. Does anyone know exactly what type of plastic they were made of?
I will guess perhaps nylon or similar
Perhaps Teflon would be a okay choice as it is very solvent and temperature stable?
If I could get orders for at least 10 pieces I would consider doing a run??


Wayne Mims
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Re: TrueFire Timer Rotor Part Source

Post by Wayne Mims » Tue Oct 22, 2019 7:55 pm

I have to True fire systems and they are both filled I would love to find somebody that could repair them my plastic pieces are okay mine both failed after they started doing backfiring I had one in my Center door and the thing has never ran so good until it quit and it quit too days after the Bellagio casino shooting I just passed the boss Blasio going down the strip and the thing started backfiring and people were hitting the ground I had to get off the strip and take it apart true story

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cudaman
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Re: TrueFire Timer Rotor Part Source

Post by cudaman » Wed Oct 23, 2019 11:01 am

Jim, I sent you a couple of PMs, please read them and reply if interested. :)
Mark Strange
Hillsboro, MO
1924 Cut-off Touring (now a pickup)


Erik Johnson
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Re: TrueFire Timer Rotor Part Source

Post by Erik Johnson » Wed Oct 23, 2019 11:26 am

If someone is going to produce new rotors, why not machine them out of brass or aluminum?

How many magnets are there? One, two or four? If there are only one or two magnets, the rotor wouldn't need to be circular. For example, if there are two magnets, it could be a "bow-tie" rotor.

Just thinking out loud - not an expert and I have only seen fuzzy pictures on the forum of a TrueFire rotor.


Les Schubert
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Re: TrueFire Timer Rotor Part Source

Post by Les Schubert » Wed Oct 23, 2019 12:32 pm

Eric
1. Round objects are typically easier to make
2. The magnets are a press fit, so a plastic is MUCH “friendlier” than brass or aluminum without totally changing the design


Topic author
J1MGOLDEN
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Re: TrueFire Timer Rotor Part Source

Post by J1MGOLDEN » Wed Oct 23, 2019 1:08 pm

The most difficult part is finding those magnets.

They are and remain very strong.

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Mark Gregush
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Re: TrueFire Timer Rotor Part Source

Post by Mark Gregush » Wed Oct 23, 2019 9:05 pm

Did you get my message?
I know the voices aren't real but damn they have some good ideas! :roll:

1921 Huckster
1925 Cut down pickup

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