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TrueFire Timer Rotor Part Source
Posted: Tue Oct 22, 2019 11:53 am
by J1MGOLDEN
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?
Re: TrueFire Timer Rotor Part Source
Posted: Tue Oct 22, 2019 1:51 pm
by CudaMan
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?
Re: TrueFire Timer Rotor Part Source
Posted: Tue Oct 22, 2019 2:31 pm
by J1MGOLDEN
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.
Re: TrueFire Timer Rotor Part Source
Posted: Tue Oct 22, 2019 4:00 pm
by Les Schubert
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??
Re: TrueFire Timer Rotor Part Source
Posted: Tue Oct 22, 2019 7:55 pm
by Wayne Mims
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
Re: TrueFire Timer Rotor Part Source
Posted: Wed Oct 23, 2019 11:01 am
by CudaMan
Jim, I sent you a couple of PMs, please read them and reply if interested.
Re: TrueFire Timer Rotor Part Source
Posted: Wed Oct 23, 2019 11:26 am
by Erik Johnson
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.
Re: TrueFire Timer Rotor Part Source
Posted: Wed Oct 23, 2019 12:32 pm
by Les Schubert
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
Re: TrueFire Timer Rotor Part Source
Posted: Wed Oct 23, 2019 1:08 pm
by J1MGOLDEN
The most difficult part is finding those magnets.
They are and remain very strong.
Re: TrueFire Timer Rotor Part Source
Posted: Wed Oct 23, 2019 9:05 pm
by Mark Gregush
Did you get my message?