Steel shims between coil ring and block

Discuss all things Model T related.
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
User avatar

Topic author
Mark Gregush
Posts: 1566
Joined: Sat Jan 05, 2019 1:57 pm
First Name: Mark
Last Name: Gregush
Location: Portland Or
Board Member Since: 1999

Steel shims between coil ring and block

Post by Mark Gregush » Mon Mar 18, 2019 7:37 pm

We are thinking about having some of the shim/spacers made up. The one piece shim. The originals I have are .015. They would not take the place of the brass laminated shims but would supplement them. This was original to the T engine. Ford part number 3272.
Question, would there be a market and if so what thickness would people like to see?
Mark
I know the voices aren't real but damn they have some good ideas! :roll:

1921 Huckster
1925 Cut down pickup


Allan
Posts: 954
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
Location: Gawler, Australia

Re: Steel shims between coil ring and block

Post by Allan » Mon Mar 18, 2019 8:41 pm

Mark, depending on the process to make them, it would be nice to have some original .015" items, and some .010" ones. By combining these two, multiple settings in .005" increments could be achieved. I like to have the magnet keepers ground once they are set to the correct height. This makes them absolutely true, but it does mean that a light grind needs to be compensated for when setting up the clearance to the coilplate.

That way, the brass shims would only have to be used to tilt the plate as needed, rather than space it as well.

Allan from down under.

User avatar

DanTreace
Posts: 902
Joined: Sun Jan 06, 2019 10:56 am
First Name: Dan
Last Name: Treace
Location: North Central FL
MTFCA Number: 4838
MTFCI Number: 115
Contact:

Re: Steel shims between coil ring and block

Post by DanTreace » Mon Mar 18, 2019 9:32 pm

Mark

Think that many would use this large shim, hope you make them.

One of mine is .018 so don’t know factory spec but likely were around this size. Think one size will be ok.


2E3D51A8-FDF0-4403-B2A0-4409F42A3613.jpeg
The best way is always the simplest. The attics of the world are cluttered up with complicated failures. Henry Ford
Don’t find fault, find a remedy; anybody can complain. Henry Ford


Kohnke Rebabbitting
Posts: 134
Joined: Sat Jan 26, 2019 3:12 pm
First Name: Herman
Last Name: Kohnke
Location: Clare, Iowa

Re: Steel shims between coil ring and block

Post by Kohnke Rebabbitting » Mon Mar 18, 2019 10:12 pm

Mark Gregush wrote:
Mon Mar 18, 2019 7:37 pm
We are thinking about having some of the shim/spacers made up. The one piece shim. The originals I have are .015. They would not take the place of the brass laminated shims but would supplement them. This was original to the T engine. Ford part number 3272.
Question, would there be a market and if so what thickness would people like to see?
Mark
We normally end up using shim stock of .002, and .001. That would make 4 points 9, 11, 1, and 3, perfect, with a .030 thousandths gap.

The mag coils that are between 9, 11, 1, and 3, are filed down, a few thousandths to the same height, if needed, as the Dial Indicator reads, on the 4 standards.

The two on the bottom will read from not under .006, to not over .010.

No matter how you do it, they have to sit 24 hours, to let them Acclimate, they can, and do change a little, they are cast Iron.

You can already buy .010 thousandths in Steel, in a horse shoe made for the Model A Flywheel housing.

Some spacers shims, for major height adjustments would be handy, and for me would be the fine adjustment shims of .002, and .001.

Thanks Mr. Mark,

Herm.
Attachments
127_2739.jpg
127_2739.jpg (15.27 KiB) Viewed 1681 times

User avatar

Topic author
Mark Gregush
Posts: 1566
Joined: Sat Jan 05, 2019 1:57 pm
First Name: Mark
Last Name: Gregush
Location: Portland Or
Board Member Since: 1999

Re: Steel shims between coil ring and block

Post by Mark Gregush » Tue Mar 19, 2019 12:19 am

I will be keeping my eye on this and see how the feedback goes. Thanks Dan for posting the photo. I forgot my camera at the shop and was going to do same.
Mark
I know the voices aren't real but damn they have some good ideas! :roll:

1921 Huckster
1925 Cut down pickup

User avatar

Topic author
Mark Gregush
Posts: 1566
Joined: Sat Jan 05, 2019 1:57 pm
First Name: Mark
Last Name: Gregush
Location: Portland Or
Board Member Since: 1999

Re: Steel shims between coil ring and block

Post by Mark Gregush » Tue Mar 19, 2019 8:00 pm

We are doing some pricing. Our guy can do the .015 and .020 on his laser but .010 is too thin, I am going to look into water jet on those. We are also considering doing them as a two piece unit. Like the one Dan shows but cut in half. It would lower the cost because of less waste.
Mark
I know the voices aren't real but damn they have some good ideas! :roll:

1921 Huckster
1925 Cut down pickup


Jerry VanOoteghem
Posts: 131
Joined: Sun Jan 06, 2019 4:06 pm
First Name: Jerry
Last Name: VanOoteghem
Location: S.E. Michigan

Re: Steel shims between coil ring and block

Post by Jerry VanOoteghem » Tue Mar 19, 2019 8:35 pm

Other manufacturing methods to consider.

You could stack up a bunch of shim stock sheets, of varying thicknesses, and have the whole stack wire EDM'd. Fixturing would be the challenge, but not impossible. (Did a similar thing for a work project some years back)

OR

You could do a search for places that make "steel rule dies". A fairly cheap process that should work for something like this.


Allan
Posts: 954
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
Location: Gawler, Australia

Re: Steel shims between coil ring and block

Post by Allan » Tue Mar 19, 2019 11:25 pm

Mark, the beauty of the one piece shim is it stays in place while you fiddle with individual shims to make adjustments. Making it two piece sort of reduces its advantage. You may find that the cost of material is the least cost in production when compared with tooling/cutting/packing/marketing. Good on you for having a go at this for our benefit.

Allan from down under.


Allan
Posts: 954
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
Location: Gawler, Australia

Re: Steel shims between coil ring and block

Post by Allan » Tue Mar 19, 2019 11:32 pm

Mark, I forgot to mention that .015" and .020" shims would do nicely. That would allow .005" increments, except for .025", by adding your shims in varying combinations.

Allan from down under.


Original Smith
Posts: 1111
Joined: Tue Jan 08, 2019 10:43 am
First Name: Larry
Last Name: Smith
Location: Lomita, California
MTFCA Number: 121
MTFCA Life Member: YES
MTFCI Number: 16310

Re: Steel shims between coil ring and block

Post by Original Smith » Wed Mar 20, 2019 10:56 am

I agree with Herm. You need to make shims of different thicknesses to get an accurate job.


Allan
Posts: 954
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
Location: Gawler, Australia

Re: Steel shims between coil ring and block

Post by Allan » Wed Mar 20, 2019 6:39 pm

Larry, you are right about individual shims being needed. The one piece ones are used to get you somewhere in the ballpark. Once they are set, the juggling can commence with individual shims. Not all set-ups require the thicker, one piece shim, but when one can be used, it makes the adjustments with thinner individual shims much more user friendly.

Allan from down under.


George Andreasen
Posts: 201
Joined: Sun Jan 06, 2019 6:21 pm
First Name: George
Last Name: Andreasen
Location: Alturas, California

Re: Steel shims between coil ring and block

Post by George Andreasen » Wed Mar 20, 2019 8:06 pm

Well, I for one am interested. I have a goofy problem (I'll do a tell all in a later post) that requires me to add approximately .065" in shims, and the one piece jobs would sure be easier. I'll be keeping an eye out........

User avatar

Topic author
Mark Gregush
Posts: 1566
Joined: Sat Jan 05, 2019 1:57 pm
First Name: Mark
Last Name: Gregush
Location: Portland Or
Board Member Since: 1999

Re: Steel shims between coil ring and block

Post by Mark Gregush » Wed Mar 20, 2019 8:18 pm

Thanks for the suggestion of "whole stack wire EDM". I looked that up last night as it was new to me and just fired off and email to a local place that does such work.
Mark
I know the voices aren't real but damn they have some good ideas! :roll:

1921 Huckster
1925 Cut down pickup


Original Smith
Posts: 1111
Joined: Tue Jan 08, 2019 10:43 am
First Name: Larry
Last Name: Smith
Location: Lomita, California
MTFCA Number: 121
MTFCA Life Member: YES
MTFCI Number: 16310

Re: Steel shims between coil ring and block

Post by Original Smith » Thu Mar 21, 2019 9:19 am

Another place we need shims, is for the mains and rods. I know they are available in .003, but how about .001 and .002? I've been making my own for years, and hate it!

User avatar

Corey Walker
Posts: 183
Joined: Sun Jan 06, 2019 11:46 am
First Name: Corey
Last Name: Walker
Location: Brownsboro, TX

Re: Steel shims between coil ring and block

Post by Corey Walker » Thu Mar 21, 2019 6:55 pm

I found these paper shims between the flywheel and crank the other day.
Attachments
436EDDF0-6CAA-487F-8C31-252761334EE5.jpeg
Corey Walker, Brownsboro, Texas

Post Reply Previous topicNext topic