Search found 168 matches

by armscor 1
Sat May 02, 2020 6:07 am
Forum: Milling Machines
Topic: Gear cuting
Replies: 17
Views: 2976

Re: Gear cuting

Cutting a 150 tooth mod1, you have to stay focused mind starts to drift off and that is where you forget the turns, forget to advance the sector arm or lock the spindle.
Total concentration and no interupptions
by armscor 1
Tue Apr 14, 2020 2:50 am
Forum: General Discussion
Topic: How would you finish this bore?
Replies: 19
Views: 3295

Re: How would you finish this bore?

In Hindsight if you want to HOLD tight tolerance and achieve preload and adjust for wear angular contact or tapered roller bearings would have been a good choice space permiiting. Maybe a fine flapper wheel tightly fitted and rotating slowly might take off the small amount of material, I did this on...
by armscor 1
Wed Apr 08, 2020 5:35 am
Forum: Lathes
Topic: Bad vibrations; is it in my head?
Replies: 26
Views: 5865

Re: Bad vibrations; is it in my head?

Working in a oil refinery years ago, debutaniser reflux pump motor without standby, could not stop it without shutting down cat cracker, bearing rumbling badly, pumped a hazardous lead based grease for months to keep it going and yes the rollers had flaked
by armscor 1
Sun Apr 05, 2020 7:57 pm
Forum: General Discussion
Topic: Problem with a plugged propane orifice.
Replies: 13
Views: 3569

Re: Problem with a plugged propane orifice.

The Swiss sent a piece of wire to Japan to show how small they could make the diameter, the Japanese sent it back to the Swiss and told them to have a close look, they had drilled a hole in it!!
by armscor 1
Sun Apr 05, 2020 5:28 pm
Forum: Lathes
Topic: Bad vibrations; is it in my head?
Replies: 26
Views: 5865

Re: Bad vibrations; is it in my head?

Roller and ball bearings can give you false readings checking for play, I remember my Brothers HD shovel engine having a bad knock coming from the bottom end, pulled it apart and checked big end play grabbing the conrod you could not feel any play giving you the impression it was OK, but carefully r...
by armscor 1
Sun Apr 05, 2020 5:00 am
Forum: General Discussion
Topic: Problem with a plugged propane orifice.
Replies: 13
Views: 3569

Re: Problem with a plugged propane orifice.

Had the same problem, wire brush bristle was the answer
by armscor 1
Sat Apr 04, 2020 6:28 pm
Forum: Lathes
Topic: Bad vibrations; is it in my head?
Replies: 26
Views: 5865

Re: Bad vibrations; is it in my head?

A rumble in the spindle bearings gives a clue.
Taper roller bearings, sleeve bearings?
by armscor 1
Thu Apr 02, 2020 4:33 pm
Forum: General Discussion
Topic: Potting electrical coil in steel
Replies: 21
Views: 3954

Re: Potting electrical coil in steel

Hi Harold, years ago I had to wind a coil for my Honda MC, the sensor coil in the crankcase to control the ignition, I was too cheap to buy one considering the silly price. 3000 turns, a mission to count and unwind, I mounted a magnet on the spindle of the Lathe and fitted a digital counter, cheap f...
by armscor 1
Mon Mar 30, 2020 5:10 am
Forum: Lathes
Topic: CRASH.
Replies: 4
Views: 1916

Re: CRASH.

!8 Tooth gear, my indexing head has a ratio of 72 to 1, just 4 turns on the handle, no need to use the sector arm, easy. I mounted the gear blank on an arbor to give me safe clearance from the chuck. Used a module 2 gear cutter. My 1954 Dean Smith & Grace had a spring and ball clutch on the feed sha...
by armscor 1
Sun Mar 29, 2020 5:04 pm
Forum: Lathes
Topic: CRASH.
Replies: 4
Views: 1916

CRASH.

Facing a large diameter from the centre I was inattentive to the cross slide travel and it reached the end of it's travel and the ensuing noise I know what I had done. Stripped a gear in the apron and luckily the mating gear suffered minimal damage, the shaft for the damaged gear is flanged and held...
by armscor 1
Sun Mar 29, 2020 4:28 pm
Forum: Lathes
Topic: Jet 1236PS switch issues
Replies: 13
Views: 3496

Re: Jet 1236PS switch issues

Yes the speed plate on my import is not correct, the first 3 low speeds correspond to 50 Hz and the last 6 speeds are correct at 60 Hz.
Disappointing.