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Your Own Design / Re: Chris's Holly Pumping Engine Build
« Last post by cnr6400 on Today at 12:33:23 AM »
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:

Frame progress looks great!

(oh, and re the laughing - guilty as charged, m'lord...... :Lol:)
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Your Own Design / Re: 917 180 degree V 12
« Last post by steamer on Today at 12:04:25 AM »
Thanks admiral!
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Engines / Re: Lil Demon V-8
« Last post by ozzie46 on August 03, 2021, 10:54:50 PM »
Thanks Ron

 Thanks George. Praise like that means a lot coming from a Master.

Ron
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Machines, Tools and Fixtures / Re: Start capacitor failure?
« Last post by Chipmaster on August 03, 2021, 09:40:55 PM »
Thanks Per I feel I can order a 160-200F tomorrow and be confident of a satisfactory result.

Andy
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Machines, Tools and Fixtures / Re: Start capacitor failure?
« Last post by Chipmaster on August 03, 2021, 09:33:48 PM »
Ah yes I agree Jo, I should add that the motor wasn't turned on when I tugged the belt, I was only moving it a few inches before closing the cover and trying to start the motor again. The Chipmaster has a safety switch (plunger type) that disconnects the power when the large fibre glass end cover that protects all the belts and change gears is open.  :ThumbsUp:

I haven't been aware of my motor causing interference, it used to dim the lights momentarily when I started it but it didn't cause any problems with computers. That was in a 1930's house I lived in until 2003, perhaps the electricity cabling to the house wasn't up to current standards. Where I live now in a thirty year old house there's no problem at all, my wife hasn't noticed the lights dimming.

So you think 160uf is likely, thanks.

Andy



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Machines, Tools and Fixtures / Re: Start capacitor failure?
« Last post by Admiral_dk on August 03, 2021, 09:13:37 PM »
I read it as : 160F -0/+25% (tolerance -> 160-200F), 250-275Vac. 50-60Hz.

A new cap should be a cheap solution - and a VFD combined with the old 3 phase, would be the fancy solution.

I hope that you solve this to your satisfaction  :cheers:

Per
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Your Own Design / Re: T head engine by Brian
« Last post by Admiral_dk on August 03, 2021, 09:05:15 PM »
Quote
Now I remember putting it in an unusual place and thinking "Now, I'll keep that separate so I'll know where to find it next time I need it."  Growing old gracefully!!!

I can relate more than I care to admit to that sentence ....  :old:

Nice work Brian
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Machines, Tools and Fixtures / Re: Start capacitor failure?
« Last post by Jo on August 03, 2021, 09:03:15 PM »
Tugging the belt  :paranoia:

Great news surgery has moved on greatly over the years  :ThumbsUp:. I think Stuart had his finger go under a belt round a pulley he can give you the gory details   :-X



Any part of the series circuit could have done what you describe. Have a measure of the windings while the caps off. On a 3HP motor it may well be a 160 UF Cap.

..... I hate to think how big the spike is that goes down the mains when that starts. Does it cause interference  ::)

Jo
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From Kits/Castings / Re: Coles C-611
« Last post by Admiral_dk on August 03, 2021, 09:02:18 PM »
Good write up and a nice end result - thank you for sharing Jo  :ThumbsUp:
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Your Own Design / Re: Chris's Holly Pumping Engine Build
« Last post by crueby on August 03, 2021, 08:25:43 PM »
More drilling and tapping time, and the pad feet blocks are bolted on (no loctite or anything on the joints yet, still need to be able to take it all apart for cutting in attachment points on the inside faces for other bracketry and the crosshead guide rails).

As you can see (just) at the bottom of the pads, they are square to the frame rails and dont sit flat on the table. They were cut a little oversize so that the bottom face of each could be taken off to the proper angle in the next step. The frame jig was bolted down square to the mill table, and the bottoms of the feet taken off square to the mill table. This ensures that the angles match up, the bottoms are all in a line, and the total height of the frame is correct - had to get out a longer dial caliper to measure the overall height, the usual 6" one would not reach.

A view looking down on the cut bottom faces:

So here is the first frame with the foot blocks cut, standing on the top of the engine beds. Five more to get to this stage, then a lot more shaping to do on the feet - end result will look more like the feet in this screen grab from the CAD model, which also shows the rest of the brackets and crosshead rails. Lots to do on the frames still!





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