ALEX.CPA Posted August 18, 2010 Report Share Posted August 18, 2010 I'd like to change the blue ones on my V2/V4 maker's HBB into silver ones, to be more gen like. Before I consider ordering ETA screws from cousins.uk, i wanted to check whether silver screws from 28.9K Asian 7750 will fit 21.6K Asian 7750 thats standard on V2/V4 HBBs. I have few Asian 7750 movements in the closed caseback watches that have silver screws. Could be a cheap route to put silver screws in HBB 21.6 k movement and blue ones in the 28.8K movement (since no-one will really see it behind closed caseback anyway). Has anyone attempted this? Will it work? Link to comment Share on other sites More sharing options...
crystalcranium Posted August 18, 2010 Report Share Posted August 18, 2010 I wouldn't count on ETA screws fitting as a back up plan. Maybe they will but not everything on a genuine Swiss 7750 and an A7750 are interchangable. Link to comment Share on other sites More sharing options...
ALEX.CPA Posted August 18, 2010 Author Report Share Posted August 18, 2010 I wouldn't count on ETA screws fitting as a back up plan. Maybe they will but not everything on a genuine Swiss 7750 and an A7750 are interchangable. Many memebers have succesfully put ETA screws into lowbeat A7750. Thats not the question that i have per se. My question is can i put screws from 28.8 K into 21.6 K movement. Link to comment Share on other sites More sharing options...
Watchmeister Posted August 18, 2010 Report Share Posted August 18, 2010 If you don't get a response and you already have the watches with the movements you should just try a screw or two yourself. Link to comment Share on other sites More sharing options...
ALEX.CPA Posted August 18, 2010 Author Report Share Posted August 18, 2010 If you don't get a response and you already have the watches with the movements you should just try a screw or two yourself. I am afraid I have to do just that...but wanted to know beforehand... Link to comment Share on other sites More sharing options...
P4GTR Posted August 18, 2010 Report Share Posted August 18, 2010 Please let us know your findings. Link to comment Share on other sites More sharing options...
ALEX.CPA Posted August 18, 2010 Author Report Share Posted August 18, 2010 Thats the reply I got on repgeek forum from fellow member with enough experience: "Yes, you can with most of the screws, I've done that before. The only screw that I don't remember if can be retrofit is the balance bridge one. And the original ETA screws will also fit the chinese 7750, I've done that also." Link to comment Share on other sites More sharing options...
ALEX.CPA Posted August 19, 2010 Author Report Share Posted August 19, 2010 another confirmation on RG site: "I changed the screws of a daytona movement to my HBB 21.600 movement and they fitted perfectly." Link to comment Share on other sites More sharing options...
P4GTR Posted August 19, 2010 Report Share Posted August 19, 2010 good to know, thanks for updating! Link to comment Share on other sites More sharing options...
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