Leaderboard

That is correct Blacklab, I've never done the swap so I may be here getting into unknown waters, as I usually restore these movements (again never swap). Still, I believe I read about this issue and the fix was to swap the cannon pinion and/or just the hour wheel on the 6R15, now don't quote me on this one since it was a discussion on another forum. I'm hopping another member that has done the conversion will jump in and give his 2 cents. From other websites I put together what I found related to this topic: "More interweb digging... It appears that the NH35 shares a few parts with the NH25, which I understand shares some parts with the 7s2X series... it's getting interesting. It appears that both movements should share the same hour wheel and many of the keyless works bits as well. It really might be as simple as installing the day wheel and clip on the movement...." "The good news first! You can put the 7s26 day wheel into the NH35A movement, essentially making it an NH36! You have to swap the hour wheel and the quickset cog and that's it!! It all works perfectly, everything clicks like it should, it sets perfectly! I thought I was about to have myself a hacking SKX009. Then, after it was all reassembled (no small feat in my current condition), I was excited to have my hacking SKX. As I went to insert the SKX stem (an integral unit with the crown), it all went pear shaped! The SKX stem is too large to fully insert into the SII movement. The interference is right on the main plate of the movement. A problem that can not be solved without either machining the stem or the movement... Needless to say, I am disappointed. Now I wonder if it's possible to take the hacking bits from the SII and put them into the 7s26 That will have to wait for another day. I don't even think I can do the swap back right now... Having the leg down that long was not the best..." "Pop the stem in to your dremel tool, break out a diamond file, and gently turn the stem down to fit... I had to do that operation to get one of my Rolex shoulderless spring bars to fit in the holes I drilled in ExploMaster. Worked well enough, but I had extra spring bars - how many stems do you have? Are they easy to get?" "I haven't checked on the availability of stems. The SKX stems/crowns can easily be had from Jules Borel. 10watches used to have some aftermarket crowns, that I think took a threaded stem, but I haven't seen them on the site for a while. My only rub with turning down the stem, is that then the watch the 7s26 goes into has a stem that doesn't fit right. Stems are so small and made of such brittle material, I think it's really important to have them fitting just right if you want them to last." And so, there we have it, it could be done! Hope it helps, Bob

Hi and welcome to the forum Butterfingers. Frenchie is correct, you require a screw with a large diameter head to hold the wheel on. To keep it authentic it should have with two hole instead of a slot, but finding one like that will be pretty near impossible unless you have one made. Check and make sure that the head hasn't been broken off the original screw by checking to see if the hole is clear. If It is clear, get a piece of pegwood and whittle it down at one end to virtually the same diameter (just a whisker larger) and gently screw it into the hole working it gently back and forth as you go. I am sure that the thread will be right handed on that wheel, but if you have difficulty getting it to bite, try going anti-clockwise. Do not force it, but gently work it in and out a few times and the wood will take on the form and diameter of the thread. You will now be able to measure this to allow you to search for a screw that will do the job. If you can get the correct information and post it on the forum, someone might be able to supply something suitable.