⚙ Model Engineering in the UK

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Shortt

Just looking at the mechanism in the master free pendulum, what happens if the two pendulums are PI out of phase, for t...
5 comments posted 8yrs
posted by headstone255.but.not.these.five.words
5 comments posted 8yrs posted by headstone255.but.not.these.five.words

circular in pendulums / pendulae / penduli

Variation of frequency with amplitude ... http://www.bmumford.com/mset/courthouse/circular/index.html
0 comments posted 8yrs
posted by headstone255.but.not.these.five.words
0 comments posted 8yrs posted by headstone255.but.not.these.five.words

Is it, or is it not, phase locking?

Comments have been that the Shortt clock is not a phase locked loop because of the infrequent checking but if you were...
1 comments posted 8yrs
posted by headstone255.but.not.these.five.words
1 comments posted 8yrs posted by headstone255.but.not.these.five.words

CMT - Cold Metal Welding?

http://www.axson.se/pdf/fro_bro_CMT_eng.pdf
0 comments posted 8yrs
posted by headstone255.but.not.these.five.words
0 comments posted 8yrs posted by headstone255.but.not.these.five.words

A mechanical phase locked loop!

Continuing my googling following last night's BHI lecture, and following up on the Shortt and Hope-jones clocks, here i...
68 comments posted 9yrs
posted by headstone255.but.not.these.five.words
68 comments posted 9yrs posted by headstone255.but.not.these.five.words

Hex bar - how is it made?

Any ideas, links? Ta, -- Peter F
8 comments posted 9yrs
posted by peter
8 comments posted 9yrs posted by peter

Any german speakers around?

Any german speakers around? Could you translate this please? Fusspedalanschluss (7-polig, 15,5mm). Ta, --Peter Fairbroth...
7 comments posted 9yrs
posted by peter
7 comments posted 9yrs posted by peter

graphite rod source?

Anybody know of a source of 32mm (or so) graphite rod at non-sillly prices. Only want a foot or two. Used to be easy, bu...
1 comments posted 9yrs
posted by peter
1 comments posted 9yrs posted by peter

soldering graphite?

Is it possible? A friend says yes, with S-bond alloys, but afaict you need to vacuum-deposit something on the graphite f...
9 comments posted 9yrs
posted by peter
9 comments posted 9yrs posted by peter

Vacuum pump curious behaviour.

I picked up a freecycled vacuum pump and motor a few years back for a round-2-it project for a vacuum bagging clamp to...
3 comments posted 9yrs
posted by bob.minchinREMOVE
3 comments posted 9yrs posted by bob.minchinREMOVE

Acquired...

Gauge OO GRAFAR SR carriage 2 x Graham Farish Pullman car 2 x Different Pullman (dining?) car All in original packaging....
0 comments posted 9yrs
posted by rusty.hinge
0 comments posted 9yrs posted by rusty.hinge

Shipping Mill from the USA

Hi, I am thinking of buying a Tormach pcnc 770 mill, does anyone have any i dea of shipping costs/time and if anyone ha...
2 comments posted 9yrs
posted by drazziweht
2 comments posted 9yrs posted by drazziweht

Any of the old crowd still here?

Time was when this was quite an active newsgroup, with a few very regular contributors, but anno domini has taken it's...
29 comments posted 9yrs
posted by andrew
29 comments posted 9yrs posted by andrew

skimming brake drums

I need to get a set of brake drums (8" not huge ones) There is a lip inside each and need to get rid of this before I i...
0 comments posted 9yrs
posted by rick_hughes
0 comments posted 9yrs posted by rick_hughes