| Gallery, Projects and General > How do I?? |
| Calling all Watchmakers!!!! |
| (1/3) > >> |
| ieezitin:
Gentlemen. I have here a nice little item that I could resist purchasing on the Flea-Bays total financial damage was $10.00 It’s a Jaquets Speed Indicator, a nice precision made instrument and it was intended to be my tool for telling me if my spindle speed without keep referring to the tables. But this pesky thing does not work, so I decided to open it up and fixit. Well its keeping its secrets as I cannot figure out how to get into it. The pictures will show you how far I can get to start breaking it down. Now let me say I have tried wrapping the housing in a rag and clamping it in a vice then trying to twist the basel glass housing, its on there tight and I am afraid if I apply too much pressure I will damage it So! All you watchmakers on here hook a brother up and give me a clue as to get inside my little toy. |
| Bernd:
Third picture down. Looks like there's a place to stick a screw driver blade under the brass part that sticks out. The bezel might not twist off but will need to be pop off. I have a cheap pocket watch and that's how you get into it. Bernd |
| 75Plus:
You will probably need to find a watch maker to repair this as there is a clock works that controls the measuring interval. There is a balance wheel like is found in a watch. The ones we had at work were prone to suffering broken balance staffs if handled too harshly or dropped. In the mean time check this one out. http://cgi.ebay.com/New-Digital-Laser-Photo-Tachometer-Non-Contact-RPM-Tach_W0QQitemZ180434621930QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2a02bdd5ea Joe |
| Stilldrillin:
I`ve got one of those! Cost less than a tenner....... Works a treat! :thumbup: David D |
| andyf:
I use the £10 cycle speedometer which boatmadman mentioned. It reads up to 199.9 in mph or kph (some pedalling!). With an actuating magnet on the rotating spindle, and the readout set so it thinks it's showing the speed in kph of a bike with 1667mm circumference wheels, 100.0 on the display = 100 rpm, 199.9 = 1999 rpm. No good over 2000 rpm, though. The 1947 Lea Francis sports car I owned when I got married but not for long thereafter :( had a Jaeger clockwork speedo and similar rev counter. The rev counter worked but the speedo didn't, and all my attempts to fix it failed. Andy |
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