A good screw just isn't enough-it must oscillate!

[Zs-ondabrain]

I wrote a letter to the supply guy at Presslabel.com and he wrote back saying he'd send me 1 or 2 sheets of the White Laser Vinyl Adhesive Film, Free of charge. So I should have a decent sample to see if it's worth buying a 50 pack (8.5"x 11") at $35.00

I have to pull my clock again to fix something so I'll scan it and work on the white face conversion. Then when the samples show up I'll shoot out a sample in the Ink Jet but I'm gonna start looking for a decent priced Laser Jet printer, but only if I decide to go balls to the wall with the white face project.

I'm sure that the finished product itself will pay for the Vinyl and printer. But this also means I'll have to pull every gauge again and scan it. I like the old font on the original gauges but that's not a problem cause I just convert black to white and vise versa.

So Will and Gary,

Would the rally clock be any different than what is pictured on the 1st post of the "white face " forum. If so and it's the same as the MSA version then we're good to go.

Dave.

[Arne]

...but I'm gonna start looking for a decent priced Laser Jet printer, but only if I decide to go balls to the wall with the white face project.

Dave, if you are using Windows, look for an HP Laserjet 1018. They are being phased out now, but if you can find one they are a very affordable B&W laser with nice crisp printing. We buy them at work for our remote staff. Small desk footprint, too, about the size of an inkjet.

[hls30.com]

Dave,

Before you pull your gages, I have a set of faces pulled and ready-at least one of the three possable sets-lets try to get all three varieties-pass along your scanner settings, and I'll email you the scans next weekend.

Will

[Zs-ondabrain]

B/W photo Reflective 1200 DPI 100%scan

I don't know what the rest is but here's a picture of my monitor with the scanner up.

I used a basic program for playing with the pics. Presto Image Folio. It's an older one but it works.

Dave.

[hls30.com]

Dave/Arne, one note on the 1018-it accepts up to 32lb paper(28lb acording to HP), and the liner of the film in question is equivalent to 91lb paper.

Before you buy one, try running the material through it...or buy it under the condition it is returnable-sometimes tough on a discontinued item...

Will

[Go240Zags]

So Will and Gary, Would the rally clock be any different than what is pictured on the 1st post of the "white face " forum. If so and it's the same as the MSA version then we're good to go. Dave.

Dave, It's quite a bit different. See attached photo. Gary D.

[Zs-ondabrain]

send me one clock or the scan of one or even just the face. I'll convert it and email it back. etc etc.

Dave.

[Arne]

Dave/Arne, one note on the 1018-it accepts up to 32lb paper(28lb acording to HP), and the liner of the film in question is equivalent to 91lb paper.

Before you buy one, try running the material through it...or buy it under the condition it is returnable-sometimes tough on a discontinued item...

Will

Good point, Will. I hadn't thought of that.

[hls30.com]

Teeth marks remind me of too many things...

Will

[hr369]

I have a ralley clock and no oscilator. I've been waiting for someone to find an inop one and perform reverse engineering. I wil help fund such a venture for the renumeration of a working unit!!

 

8 year old thread back from the dead. Probably nothing else was done after these guys ran into a dead end and gave up. 

Well, since i've accumulated 3 of these clocks without oscillators, i've been doing a little research myself and ran across this thread.

 

I'm not an electronics guru for sure but this much i think i've figured a little more out. It's a slave and master type with the slave

being the clock gears and hands. The master is the oscillator/impulser.  Smith clock co used to make these and people have made universal

impulser's to retrofit the old smith clocks. Guess who made the oscillators for the later Smith clocks. Jeco supplied them.

 

 

 

I think the only way to solve this problem is to find the correct motor voltage and start by tweaking the pulses.

It would be helpful to know what the tuning fork frequency is but i have not found anyone who has hooked a scope

up to one and measured it. There is an equasion however that gets you in the ballpark. I just have to know how long

the fork is.

 

This guy measured frequency

https://www.youtube.com/watch?v=0vP3SE-wD6Q

 

I've seen references  to the datsun oscillator comparing it to the bulova tuning fork watch. The main difference is the bulova had a direct mechanical link

from the fork to the "slave" part of the clock. Whereas the datsun clock is 2 completely seperate pieces whereas the Jeco turns the tuning fork  motion

into electronic motion (pulses).  So it makes it easier to retrofit using more modern electronics.

 

Whats confusing though is that some of the old slave clocks have a coil and some of the "less old" slave clocks

refer to a motor. I don't  think it matters that its sending pulses to a coil that moves a mechanism or a motor. 

 

I found a list of the types of clock motors and I believe the rally clock uses the stepping motor

• Synchronous motors, connected to the normal household mains supply (potentially (very) high power)
• Impulse motors, used to provide a magnetic impulse to maintain a pendulum (low to very low power)
• Miniature stepping motors, as used in quartz clocks and watches (low power)
• Conventional small DC motors - generally only used to rewind a spring (high power)

 

Here is a universal impulser/oscillator they sell on ebay for 98$

 

 

http://www.piexx.com/imp2/imp22k.pdf

Edited June 4, 2015 by hr369