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Member postings for johnp10

Here is a list of all the postings johnp10 has made in our forums. Click on a thread name to jump to the thread.

<< First < Prev 1 2
Thread: 15-day Skeleton Timepiece
27/01/2012 14:14:45
Hello Russell,
 
Machine your pivots with a sharp internal corner and chamfer the arbor at about 60 degrees inc. to about 1 m/m diameter larger than the pivot , then c`sk the pivot hole just a few thou. to remove the sharp corner. This reduces the rubbing friction between the pivot shoulder and the frame plate.
 
John.
 
26/01/2012 13:18:50
Hello Russel.
I suggest that you drill the pivot holes a few thou. less than the pivot diameter then broach the hole on the inside of the frame plates until the pivot will just fit into the hole. At this stage cut the oil sinks on the outside of the plates, lightly countersinking the holes first to provide a location for the d-bit. Now broach out the pivot holes equally on each side of the frame plate to give about 5 degrees of arbor lean in all directions. Fit the arbour and wheel into the clock frame and check that it spins freely. If it does`nt spin freely or stops with a jerk then one or both holes may be a little too tight. A final check is to fit the arbor and wheel in position then suddenly invert the clock frame When a click should be heard as the arbor drops taking up the end shake.
 
John.
24/01/2012 10:41:32
I must thank Mr Eberhardt for pointing out that a number of errors the have crept into the 15 day skeleton clock series in M.E. from 28 March to 15 August 2008.
Items 1,2,3 & 4 in Mr. Eberhardt`s list are correct as printed.
The drills that I used were standard Imperial sizes when the clock was first built but there is no reason that the sizes suggested by Mr. Eberhardt should not be used as long the diameters of their matching arbors are adjusted to fit.
John Parslow.
 
23/01/2012 12:13:12
Hello Mr Eberhardt,
If you will kindly contact me at johnp10@ virginmedia.com I will endeavour to answer your queries.
Regards.
John Parslow.
Thread: Wheel Cuting thin tooth?
11/01/2012 14:55:40
Hello Mr Hall,
I was interested to read that you are building my skeleton clock and would be interested to know how you are getting on with it
May I invite you to contact me on [email protected]
I would like to hear you experience of this project .
Regards.
John Parslow .
<< First < Prev 1 2
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