Can I turn flywheel ring gear

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Topic author
Bob Broihahn-S.W. Wi
Posts: 11
Joined: Tue Jan 08, 2019 8:26 pm
First Name: Bob
Last Name: Broihahn
* REQUIRED* Type and Year of Model Ts owned: 15 touring,27coupe,23fordor
Location: Lancaster Wi
MTFCA Number: 15833
MTFCI Number: 21988

Can I turn flywheel ring gear

Post by Bob Broihahn-S.W. Wi » Tue Feb 04, 2020 8:30 pm

]I'm tearing down the transmission of my 27 t and was quite surprised to what I found. This car has not been started in about 20 years and I was the last one to run it, I don't remember any serious issues when it was last started. I decided to start a frame up restoration, with the frame, rear end, and front end done the next was to tear done the motor. With hogs head off I was surprised to find 5 broken mag screws, a very beat up magneto coil,5 mag clamps at various locations and the starter ring teeth on one side damaged (not totally missing, but dinged up). I'm debating if I can just rotate the ring gear. 180 degrees and us the undamaged side of the ring gear. Enclosed are pictures of dinged up ring gear which I want to rotate, but looking for a little advice
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Allan
Posts: 5256
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First Name: Allan
Last Name: Bennett
* 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: Can I turn flywheel ring gear

Post by Allan » Tue Feb 04, 2020 8:45 pm

The starter engages on two places on the ring gear, opposite one another, when the motor comes to rest. What you are seeing is normal wear. Some cheapskates will rotate the ring gear 90 degrees so the bendix engages on a new set of teeth, but I think that is false economy. You will need to disassemble your flywheel to rebuild it. That requires testing each magnet for cracks/breakage, fitting replacement original keepers and a new set of screws. It is pointless not to fit a new ring gear at this time.
Hope this helps.
Allan from down under.


Topic author
Bob Broihahn-S.W. Wi
Posts: 11
Joined: Tue Jan 08, 2019 8:26 pm
First Name: Bob
Last Name: Broihahn
* REQUIRED* Type and Year of Model Ts owned: 15 touring,27coupe,23fordor
Location: Lancaster Wi
MTFCA Number: 15833
MTFCI Number: 21988

Re: Can I turn flywheel ring gear

Post by Bob Broihahn-S.W. Wi » Tue Feb 04, 2020 9:02 pm

Thanks Allan
Makes good sense

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Humblej
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First Name: Jeff
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* REQUIRED* Type and Year of Model Ts owned: 1926 Canadian built coupe, 1924 TT C-cab, survivor 1924 roadster
Location: Charlevoix, Mi
MTFCA Number: 28034
Board Member Since: 2006

Re: Can I turn flywheel ring gear

Post by Humblej » Tue Feb 04, 2020 9:25 pm

Do you mean flip it front to back? No, it is machined to engage on one face only.

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Mark Gregush
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* REQUIRED* Type and Year of Model Ts owned: 1925 cutdown PU, 1920 Dodge touring, 1948 F2 Ford flat head 6 pickup 3 speed
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Board Member Since: 1999

Re: Can I turn flywheel ring gear

Post by Mark Gregush » Tue Feb 04, 2020 9:39 pm

No, simply rotate for fresh set of teeth where the Bendix first engages the gear.
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup


Kenny Edmondson
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Location: Indianapolis, IN

Re: Can I turn flywheel ring gear

Post by Kenny Edmondson » Tue Feb 04, 2020 10:05 pm

Starter Ring gears, transmissions, mag rings and other engine internals are not things to take short cuts on, unless you enjoy pulling engines and tearing them down to repeatedly repair...

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