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New Arrival 7015 Speed Timer - Tech Questions

2190 Views 9 Replies 5 Participants Last post by  Grammarofdesign
Just picked up this terrific slightly used 7015-7000 Speed Timer on the original bracelet. I am stoked at how nice it is. Once I give it the full disassembly, ultrasonic cleaning, etc with new NOS crown treatment, this one will be special!

2 Technical Questions for our SCWF Experts:

1. Being based on the 7005/7006/7009 caliber, with the start-stop chrono mechanism added on top, is it better to leave the seconds timer running (like a 6138 or 6139 movement) or better to leave it stopped unless timing ?

2. Does anyone know for sure if 6139 model springs can be used for the start-stop buttons in the 7015? I have a spare NOS set of 6139 springs that I would like to use when I reassemble after cleaning.

Thank you in advance !

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Jon,
I can't help much regarding the chrono but to be on the safe side I would keep it running. I would also compare the springs to see how they match up.
These are a sweet flyback chrono. If you'll notice it's called flyback because you can reset the chrono hand without stopping it first like on a 6139.



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Thanks Tom. Yes the flyback is super cool I had a Montblanc flyback a while back (Swiss and expensive) with this feature.

Seems you have the same 7015 with same dial and same OEM bracelet - only nicer condition!
Hi, These models use a different spring, PN 81350419 smaller & doubled at top & bottom, Happy to post a couple for the cost of shipping if it helps. Nice model BTW
I customized a 7015 a while back and they are dead simple to service, no harder than a 7009 etc.

The chronograph center wheel has a similar construction to the 6139 so benefits from being continuously run to reduce the stress on the clutch spring.
Wow thank you guys, one and all. This is terrific support.

Mike thank Polly for me for the advice. I like to watch the yellow timer hand sweep so that's what I was hoping for. Great to have such knowledge shared so quickly here.

Stephan let me pull the movement and check and I'll let you know. That is a very kind offer. You are a true gentleman and resource !
Hi, These models use a different spring, PN 81350419 smaller & doubled at top & bottom, Happy to post a couple for the cost of shipping if it helps. Nice model BTW
Hi Stefan:

No need to take you up on your most kind offer. After a good ultrasonic cleaning the pushers are working totally perfectly.

Cleaned the hour markers but not the face of the dial. Basically looks really terrific.

I am so thrilled to have this puppy up and cleaned and running like a top.
What did you use to clean the hour markers Jon?
...and some pics :) ?
Here you go.........

Used Veraet to clean the hour markers with Q-Tips and a lot of hard pressure when wetted and light pressure when drying off and polishing Save me pulling the dial and doing the full soak job that sometimes ends in disaster.

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