Thanks for the welcome Rob! I'm not sure how I missed this forum.
I've wanted a Triumph bass and LP Recording guitar since they were first introduced back in the day. I've always ended up with lots of knobs and switches on my guitars, so I guess that appealed to me! I remember when you couldn't give them away, but now they are getting pricy.
The first pickups I tried winding back in the late 70s were low-Z, as I was trying to get that Alembic tone. More recently when I decided to go into the pickup making business I was winding low Z pickups very similar to the original LP Signature pickups, but using an external preamp instead of a transformer. My current standard pickups are high Z, but still different from most of the stuff out there. I've been planning on making a new Low Z pickup, using the heavy wire, and a transformer, and in standard soapbar style cases.
As I mentioned earlier I'm planning on building myself a version of a LP Triumph. I have the pickup covers and mounting rings, a long scale LP neck and an inlay set from a 70s LP Custom. I could make a more correct short scale mahogany neck, but I like the fact that I have a real Gibson neck, and I like long scales better. Now I just have to make the body, finish the neck and wind the pickups. I'm probably not going to use the plastic control plate, since they seem to bend and stuff after a while. So it will be a cross being the triumph and original LP bass.
Info on the pickups is hard to come by. A thread was started over at the Pickup Makers forum back in '07, and that had some interesting tidbits.
http://music-electronics-forum.com/t3737/That included the photo of the pickup made by Chuck Burge.
So any info is helpful. I've never had a set of the real pickups, so I wont know how close mine are since I have nothing to compare them to. I did get some specs from someone who did resistance measurements of each coil tap, and general info like magnet size. Based on that, and the over all size of the coils, I should be able to wind a pretty faithful replica of the pickups. I plan on making a rubber mold of the covers so I can cast them, since they are hard to come by.
I'm a very small one man operation, and I enjoy doing unusual pickups.