Jump to content
When you buy through links on our site, we may earn an affiliate commission.
  • Current Donation Goals

How to Franken a RBII ?


ericb196

Recommended Posts

After having seen all your franken project and the nice result on the RBII, I decided to try to Franken the RBII that is on the way from the dealer to my home.

I already received a LWO 283 and I'll get a second one in the next days.

As far as I understood, the rep handles won't fit directly, I need a specific movement holder (hand made) and a way to connect the chrono pushers to the movement (I saw on Guru's watch that specific longer pusher on the low 283 can make it work)

I'll perhaps need also a silver hour wheel (the one I got one the first movement is a gold one)

I'll really appreciate all the help and experience you can give me to achieve this project...

Link to comment
Share on other sites

Here are my thoughts but people should feel to correct them:

Gen movement requires gen dial due to different placement of sub-dials. You may or may not need gen inner tachy ring (never tried seconds at 12 case with rep tachy ring and gen dial). If using gen tachy ring you will need to enlarge inside of the bezel but also reduce height sice gen tachy ring is shorter and wider. Original hands can be used with substantial rework. Rep chrono pushers can be used with the gen movement. The case will also require plugging and then redrilling the crown tube hole. And you will certainly need a new movement ring. If you are not a skilled modder/watchsmith you will need to find one. But your immediate issue will be finding a gen dial to go with the LWO movement.

Link to comment
Share on other sites

Thanks for this return.

I must say that there is still something not that clear for me concerning the subdial position. We find examples of guys who manage to put a RBII rep dial on a lwo 283 movement. What I understood is that the date windows will be slightly uncentered...

Concerning the specific RBII we don't need to change the crown tube, there is a solution to change the chrono pusher on the movement so that they are longer and can be aligned with the crown.

Here is a really interesting example on RWI : http://www.replica-w...ects-70245.html that shows it.

Edited by ericb196
Link to comment
Share on other sites

First of all.....if you plan to use a rep dial with a LWO movement, you can stop right now.

The rep dial will not fit the LWO movement.

It's not the subdials but the date window which will not work.

I'm not on RWI so I can't see your link. I guess it's this one right? if not, perhaps you can post some pics of it.

http://www.rwg.cc/topic/117528-barrichello-frank/

As you can see, the date looks terrible.

Why bother putting in a LWO movement which will look terrible while the rep movement is pretty reliable and looks great?

Another issue will be the hands. If you don't have the gen hands, you need to make a new hand tube for the minute hand and a new hour wheel for the hour hand.

The tubes of the chrono hands needs to be shorted and broached. Since the tubes are made of butter and are connected poorly to the hands, it's pretty tough.

Next issue is the movment ring. you have to design and make a new one.

The crown can be lowered but is not a must. If you do not lower it, you have the make extensions for the pushers.

A gen tachyring has to be shaved. A rep tachy will fit a rep dial.

The next question is: are the movements you have complete? so with cannon pinion and hour wheel. If not, you can not use them at all.

Good luck with the build!

Link to comment
Share on other sites

First of all.....if you plan to use a rep dial with a LWO movement, you can stop right now.

The rep dial will not fit the LWO movement.

It's not the subdials but the date window which will not work.

I'm not on RWI so I can't see your link. I guess it's this one right? if not, perhaps you can post some pics of it.

http://www.rwg.cc/to...richello-frank/

As you can see, the date looks terrible.

Why bother putting in a LWO movement which will look terrible while the rep movement is pretty reliable and looks great?

Another issue will be the hands. If you don't have the gen hands, you need to make a new hand tube for the minute hand and a new hour wheel for the hour hand.

The tubes of the chrono hands needs to be shorted and broached. Since the tubes are made of butter and are connected poorly to the hands, it's pretty tough.

Next issue is the movment ring. you have to design and make a new one.

The crown can be lowered but is not a must. If you do not lower it, you have the make extensions for the pushers.

A gen tachyring has to be shaved. A rep tachy will fit a rep dial.

The next question is: are the movements you have complete? so with cannon pinion and hour wheel. If not, you can not use them at all.

Good luck with the build!

We now have heard from the master.

Link to comment
Share on other sites

Moving the sec@12 mod of the latest movement on a Swiss Eta 7750 is another improvement..

The Swiss eta is stronger and will run smoother..

another myth. Serviced by someone like The Zigmeister the A7750 is as good. The reliability problem with asian movements is the poor condition some of them come. With proper oil and cleaning I don't see anything structurally wrong with the A7750.

Link to comment
Share on other sites

another myth. Serviced by someone like The Zigmeister the A7750 is as good. The reliability problem with asian movements is the poor condition some of them come. With proper oil and cleaning I don't see anything structurally wrong with the A7750.

I thought there was an issue beyond proper servicing on the basic parts - things like parts not properly finished, etc. Having said that I agree that with a servicing the movement should be fine. One of the things I have never investigated but was curious about was the quality of the mainspring on the Asian versus an ETA. But I may just be kidding myself. :lol:

Link to comment
Share on other sites

I thought there was an issue beyond proper servicing on the basic parts - things like parts not properly finished, etc. Having said that I agree that with a servicing the movement should be fine. One of the things I have never investigated but was curious about was the quality of the mainspring on the Asian versus an ETA. But I may just be kidding myself. :lol:

OK, you can get the A7750 90-95% there, happy? :)

Link to comment
Share on other sites

Yup. :) I just get tired of hearing that the Asian 7750's are as good as an ETA. They are not or at least the quality control is not as good. But you are absolutely right that with proper care the movements can last a lifetime. The funny thing is it is often my ETA movements which need adjustment sooner than the rep movements.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...
Please Sign In or Sign Up