sneed12 Posted July 6, 2012 Report Share Posted July 6, 2012 Trying to build a movement to go into my AP diver v3. I have a 2824 and a 2846 sitting on the table in front of me. I stripped down the underside of the 2824 Now what? Do I have to remove the pallet fork as well? What do I have to install from the 2846--just the balance wheel, escape wheel and gear train? Link to comment Share on other sites More sharing options...
FxrAndy Posted July 6, 2012 Report Share Posted July 6, 2012 To be honest i have never tried this but i would think you have to use the main spring from the 1846 as well, the palet fork you may get away with but why not just fit the 2846 in the AP diver???? Link to comment Share on other sites More sharing options...
sneed12 Posted July 6, 2012 Author Report Share Posted July 6, 2012 Doesn't work with the AP diver datewheel also, I had a dead 2824 and a running 2846 lying around and I'm sick that way Did you mean the mainspring or the balance wheel/hairspring? I will swap the balance wheel but I can't imagine why the mainspring/barrel would be different... Link to comment Share on other sites More sharing options...
FxrAndy Posted July 6, 2012 Report Share Posted July 6, 2012 Ah ha ok yep the DW got ya but look closely at the teeth on the main sping barrels and check they are the same you may find that the 2846 has slightly larger teath??? Link to comment Share on other sites More sharing options...
sneed12 Posted July 6, 2012 Author Report Share Posted July 6, 2012 They look the same to me... I guess I'll find out Link to comment Share on other sites More sharing options...
sneed12 Posted July 6, 2012 Author Report Share Posted July 6, 2012 I think I might have just destroyed a movement. Oh well. I gotta head into the office, I'll try to take another look at this next week. For now I'm throwing in the towel, I can't leave stuff like this laying out because my kids are visiting. Link to comment Share on other sites More sharing options...
sneed12 Posted July 6, 2012 Author Report Share Posted July 6, 2012 More details: I only have 1 movement holder, so I improvised a second: junk dial stuck into old Noob case 2824 is stripped entirely on the bottom, except the pallet fork You can see the difference between the 2824 and 2846 escape wheels Escape wheel installed. This is where I went off the rails, but didn't notice right away--one of the escape wheel teeth is sitting on top of the pallet fork Bridges from the 2846 are interchangeable with 2824, interestingly At this point, the pallet fork wouldn't turn. Instead of taking it apart and trying again, like an idiot, I tried to force it a bit and popped one of the jewels out. Here it is loose I went and got another pallet fork out of my collection of dead movements (I have quite a few) and tried again, no luck. I'll try the pallet fork from the 2846 when I get a chance. Maybe they're not interchangeable or something. Link to comment Share on other sites More sharing options...
kbh Posted July 6, 2012 Report Share Posted July 6, 2012 I'm no expert but it only seems logical the with the escape wheels that different, the pallet forks would also be different and not interchangeable. I'd try looking up the part numbers from the ETA documents and seeing if the have different part numbers. Link to comment Share on other sites More sharing options...
krpster Posted July 7, 2012 Report Share Posted July 7, 2012 I checked the tech spec for the 2846 and it is less detailed than those for the still manufactured movements so I couldn't judge cross compatibility of parts. I would think that you would have to move over all of the moving parts to get it to work right, although not sure the base plate will take them. Interesting idea and attempt, curious to see how you make out. Link to comment Share on other sites More sharing options...
sneed12 Posted July 7, 2012 Author Report Share Posted July 7, 2012 I think the experiment is at an end for now. The 2824 mainplate I was using has a broken-off bit stuck in the pallet fork jewel in the mainplate. I could not get the broken bit out. I tried popping the jewel out, but I can't seem to press a replacement back in. On the other hand, I was able to put all of the 2824 stuff onto the 2846 mainplate... As you can see from those pics, it's running. At 28.8 kbph. I installed some spare hands left over from a long-ago experiment and it even seems to be keeping good time. So I started with 1 dead 2824 and 1 running 2846; I ended up with 1 running 2846 mainplate with assorted 2824/2836 parts on it (all Swiss) and a REALLY dead 2824, along with a small pile of broken spare parts. That's actually not so bad, considering. If anyone has a dead 2824, I'd be interested in trying again. I kept the low-beat balance, pallet fork, gear train, and escape wheel separate. Should be an easy drop-in if I ever get the chance. Link to comment Share on other sites More sharing options...
FxrAndy Posted July 7, 2012 Report Share Posted July 7, 2012 Well i am sure it was a learning experience for you Link to comment Share on other sites More sharing options...
highoeyazmuhudee Posted July 8, 2012 Report Share Posted July 8, 2012 interesting, the very idea of this occurred to me just the other day, guess you were sending out 'vibes' Link to comment Share on other sites More sharing options...
Jkay Posted August 29, 2012 Report Share Posted August 29, 2012 It's funny that I did not notice until now that the 2824 is a china clone. So you did not only mix 2846 and 2824 .. you mixed Swiss and Guangzhou Link to comment Share on other sites More sharing options...
mt666tm Posted September 10, 2012 Report Share Posted September 10, 2012 Great read, thanks for posting this! In what respect does the rep AP date wheel not fit on the 2846? Actual size or just number alignment? It looks as though it should work.. Nice Franken movement you have ended up with Link to comment Share on other sites More sharing options...
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