Before I assemble the coil box for this 1923 TT, I want to be sure I have the terminals arranged properly. This seems to be the only way they'll fit. Do I have it right?

Steve,
Looks ok. The outside coil contacts are offset inward from the groove in the wood, so need the offset contact. The center coils line up well with the slot, so non-offset terminals would be best.....but it looks like all new sets that I have are all offset. The offset ones seem make adequate contact in all locations, so that's probably why they offer only the offset.

Steve,

You will notice that the offset contacts are in left and right-hand versions. Apparently, Ford did not change the spacing of the coil box contacts when they made the coils closer spaced and standardized on the new improved coil in 1914 or so. The offset contacts take care of this discrepency.

Tom

Just a word of caution.
Currently made reproduction coil box terminals are made of copper plated steel and, frankly, are useless. This is just another example of reproduction parts not made to original Ford drawings.
I have seen several sets fail in one Montana 500 race.
Find yourself a set of usable original Ford Phospor Bronze terminals for your coilbox.
There is a reason Ford made them of that material.
Ron the Coilman

Ron, not to worry. I'm using the originals.

The coil box contacts for 26/27 did NOT have the offset as you correctly pictured above. They too are phospher bronze material and the copper plated repros are just no good. In our coil box rebuilding kit for the 26/27 there is an instruction sheet which clearly shows the differences between the various contacts. That instruction sheet can be downloaded for free. Check out our part number 5001BRK.

26/27 Waterproof Coil Box Kit Web page

The horizontal spacing between the mounting holes on the terminal board for the spring contacts is 2 and 5/16 inches. The spacing however between the contact studs on adjacent coil boxes is 2 and 1/8 inches. This apparent discrepancy can be corrected by choosing contacts for coil 1 and 2 which are opposites and which are installed with their offsets towards each other and similarly for coil 3 and 4. In the diagram provided by Steve Jelf I believe the second and third columns of contacts should be transposed.

Hmmm. I just held a magnet to a half dozen sets of new contacts & coil box bottom strips as well as a bunch of old ones and found nothing made of steel. They all seem to be of some copper base material. I don't have access to an analyzer so can't pinpoint the alloy.
I suppose they could be plated austenitic stainless or other non-magnetic form of steel. I didn't yet try to grind off the "plating".
Is this plated steel thing brand new? My stock is probably 6 months or so old.
The bolts all seem to be plated steel whether new or old.
I'm curious as to how the contacts failed at the Montana 500. I've never had a problem nor heard of one.
Frank

Phosphor Bronze is a "spring" bronze. If the modern repops are not being made with this type of material they quickly loose their tension causing poor contact with the coil.

Could be that someone is now making them of bronze. I currently make the terminal bolts out of brass, correct for the early Ford boxes, but a good choice for the later ones too: easy to solder the terminals to, and no corrosion.

Frank:

The ones I have are steel but I can't say that ALL of them are for sure. I just assumed they were but the problem is that they are NOT made of phospher bronze as original and they are not at all SPRINGY. What happens is that in very short order your hit a bump and the coil pushes against the contact and it does NOT spring back. Ron Patterson to me that several guys using the copper repro contacts were constantly taking their coils out and rebending the contacts because of misfiring. I am pretty sure that is what he related. I was not there. That would make sense based on what I have here that I bought new some time back. Even pure copper wouldn't be so hot since it is NOT a spring. The problem does NOT appear to be conductivity or contact resistance but just that the contacts are not springs but just soft plated steel on the ones I bought. I never used them since originals are plentiful from old rusty coil boxes where the box is gone to total rust but being bronze the contacts are still fine.