2fake4u 0 Posted January 4, 2018 After dealing with the CHS Craptastic Movement for several months now trying to figure out how to make it more reliable, and finding that replacing the majority of the guts with ETA 2824/2836 guts seems to at least get it to run great, I was bouncing back and forth between getting a Rolex 3186 or creating my own SH3185. In the end, I enjoy tinkering more than assembling, so building a hybrid SH3185 won out for my GMT 116710LN Franken. Build consists of - Gen Bezel (Assembly and insert) - Gen Chromolight Dial - Gen Chromolight Hands - Gen Datedisc - Gen Xtal - Gen Crown - SH3185 - ARF 904l Bracelet - Noob Case For the conversion, you need roughly $600-650 worth of Rolex parts and of course, an SH3135. Below is the Rolex Parts list. Part Number Description B3155-335-Y1 Minute Pinion w/ Cannon Pinion B3155-360-G1 Second Wheel B3175-260-Y1 Minute Wheel 24hr B3185-268-L1 Keyless Works Cover Plate B3185-284-Y1 Hour Wheel 12hr B3185-600-K1 Seating for Date Indicator B3185-614-Y1 Date Jumper B3185-623-Y1 Finger for Date B3185-625-Y1 Date Wheel Mounted B3185-660-Y1 Jumping Hours Module B3185-662-Y1 Corrector Wheel B3185-670-Y1 Intermediate Date Wheel And now on to the fun stuff To start, I will show you 2 spots you need to modify on the main plate. The Jumping Hours Module sits in here and these 2 spots need to be filed down to allow it to sit flush and move freely. I used a couple small files to do this. Some pics while assembling the movement. What I did was place the SH3135 Parts I was removing in a line in order that I took them off. I then placed the Rolex Parts I was replacing them with right below them so I didn’t miss a step or use the wrong part. If you’ve taken these apart before, its pretty easy to figure out what goes where. And here is the finished movement with the Gen Date Disc https://www.pixelsbin.com/images/2018/01/04/10d0bf2914332f75cb.jpg[/img] With Gen Hands and Dial Installed Test fit into the case. The Movement is a little loose in the case, so I had to use longer tabs to hold it in place and centered in the case. https://www.pixelsbin.com/images/2018/01/04/127ab23f41d6f2bb03.jpg[/img] A couple pics of the final product. The Crown Height of the SH3185 sits a touch lower than the 2836 CHS movement that comes in these. It isn’t enough to affect performance, but it is something to be aware of. About less than .5mm. And some glamour shots So far, the movement is running great. The jumping hours module hasn’t had any issues, I had to go from Date 13 to Date 3, and the movement itself averages ~+4s/d All in all, a happy medium between the unreliable CHS movement and the $2k Rolex 3186. Now on to the next project. Share this post Link to post Share on other sites
paccbet 7,176 Posted January 4, 2018 That's a whole another level of tinkering. Excellent job Share this post Link to post Share on other sites
androme 0 Posted January 4, 2018 But this doesn't answer who has the best sub? On more serious note, I like posts like these. Congrats on getting this all done! Anything you would have done different if you were to do it all over again? Share this post Link to post Share on other sites
2fake4u 0 Posted January 4, 2018 5 minutes ago, androme said: But this doesn't answer who has the best sub? On more serious note, I like posts like these. Congrats on getting this all done! Anything you would have done different if you were to do it all over again? Get the 3135/3185 service manual before building it. Going in blind wasnt the best way to do it, but it turned out well. Was roughly 1.5hrs spent on movement because I wasnt sure what needed to be modified on the mainplate before I started. Basically built it twice. Share this post Link to post Share on other sites
Misiekped 0 Posted January 4, 2018 Get the 3135/3185 service manual before building it. Going in blind wasnt the best way to do it, but it turned out well. Was roughly 1.5hrs spent on movement because I wasnt sure what needed to be modified on the mainplate before I started. Basically built it twice. Or build another 3 dozens and will take about 20 min from start to finish Sent from my iPhone using Tapatalk Share this post Link to post Share on other sites
2fake4u 0 Posted January 4, 2018 25 minutes ago, Misiekped said: Or build another 3 dozens and will take about 20 min from start to finish Sent from my iPhone using Tapatalk lol yep. once you do it once, its easy to do the 2nd/3rd/etc. times Share this post Link to post Share on other sites
Luxuracer 14 Posted January 4, 2018 7 hours ago, 2fake4u said: And now on to the fun stuff To start, I will show you 2 spots you need to modify on the main plate. The Jumping Hours Module sits in here and these 2 spots need to be filed down to allow it to sit flush and move freely. I used a couple small files to do this. Some pics while assembling the movement. What I did was place the SH3135 Parts I was removing in a line in order that I took them off. I then placed the Rolex Parts I was replacing them with right below them so I didn’t miss a step or use the wrong part. If you’ve taken these apart before, its pretty easy to figure out what goes where. This take "franken" to the next two level ... ! Share this post Link to post Share on other sites
