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Member postings for Pete White

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

Thread: New to metal lathes
18/02/2019 09:46:00

How about using a fixed steady on a much smaller lathe than you would need to pass a cue through the spindle ?

Pete

Thread: The Workshop Progress Thread 2019
11/02/2019 20:19:09

Engineering porn, smileygreat photos, keep up the good work and posts, much appreciated.

Pete

Thread: lathe wanted
11/02/2019 09:49:51

I will second the widen your choice option, to give you more chance of finding a good buy. Accessories are expensive if bought individually, a machine with as much kit as possible is a way to go, if the machine is sound, be prepared to travel.

In the days of the demise of Technical Colleges machines could be had wink with 3 and 4 jaw chucks, face plate, catch plate, coolant, low voltage lighting, taper turning, fix stead, travelling steady, gap bed. etc.

Good Luck

Pete

Thread: Single to 3 phase invertor and smart meters
10/02/2019 11:16:56

This might be a bit like when we conned into having "economy seven" for free to benefit from energy being produced at night. I few years ago i was looking at changing supplier and they questioned why I was on economy seven as I was not using enough night units to justify the charges THAT HAD CREPT IN. Soon came of that scam, but still wonder how much it had cost me over the years. I had given up night time activities, like baking cakes, night time washing, cutting the privet hedge, getting the wife up early to do the ironing, etc. lol

Who started all this whining anyway....lol

Pete

Thread: Single phase verses 3 phase motor
10/02/2019 10:25:57
Posted by Brian Oldford on 09/02/2019 21:26:07:

Actually Pete, so long as the stator windings aren't epoxy potted, on a three post machine (415v only), if you're not afraid of a bit of motor open heart surgery, you can almost always get to the star point and open it up. Carefully noting the phase relationship you can rewire it to delta and they'll invariably run beautifully. Getting the phase relationship is crucial (don't ask!).

Thanks for that Brian, I have never stripped a motor but thought the star point would be like looking for hens teeth. I might have have a go. I am not afraid, I used to run motors and a mig welder, form an oil cooled welder and very big capacitors capacitors years ago. I think I am to afraid these days to do that again. lol

Pere

.

Thread: Single to 3 phase invertor and smart meters
09/02/2019 18:42:47
Posted by peak4 on 09/02/2019 12:27:36:

There may be other good reasons for cancelling a SmartMeter , but a VFD shouldn't need to be one of them.
I've got a couple on the go here and have no issues.

Bill

There certainly are I was informed by a very reliable source..............smart for the supply companies.

Pete

Thread: Talktalk new web site
09/02/2019 18:37:14

Thunderbird, no problem, old fashioned looking format, gmail I never got to grips with.

Top tip, Linux Mint, don't like paying for software prefer spending money on tools. lol

Pete

Thread: Single phase verses 3 phase motor
09/02/2019 18:26:22

I am lucky to have 3 phase in the workshop, never used a VDF, but do you need to ensure your motor is a six ends out so that you can make sure the voltage is correct, or already suitably wired?

There was single phase motor on my wood lathe when I bought it., it was hopeless with all the stopping and starting leading to over heating. Sorted by fitting a readily available cheap three phase option. Maybe the motor had a problem but convinced me that single phase is not for me.

Pete

09/02/2019 18:23:29

Double post, instead of edit, as below.smileyangry

Edited By Pete White on 09/02/2019 18:27:47

Thread: Wheels for a 5 inch gauge battery loco
25/01/2019 11:48:39

Well those two answers are exactly what I was looking for, lots of very good points and the link, many thanks to you both smiley

The Atlantic offering was taken from the series in M.E.March 2010, that was the one that didn't look right to me.

I am at the stage of joining a local club, will talk with them.

Thank you for your time both.

Pete

 

Edit Just saw other two answers which appeared whilst I was composing, lol thank you also gents

Edited By Pete White on 25/01/2019 11:51:04

25/01/2019 10:03:21

Well it appears that 153 viewers don't know the answer, lol, so I did some more research .smiley

I found the GL5 standards to add to my confusion ! ..............the.0.038 tip radius made me smile. I was beginning to think that I was over thinking this until I saw that, serius stuff, ..........or maybe I am over thinking it lol

And then I looked back at the Atlantic details. that 1/16 flange isnt much, but a big radius behind it wth no dimensions or taper...........does it all matter

Pete

Thread: Thread locking
24/01/2019 21:06:54

Third vote for keeping it simple, lock nut. smiley

Thread: Wheels for a 5 inch gauge battery loco
24/01/2019 17:42:10

As above, I have four 16 mm thick billets machined up with axle hole bored true to face.

I started to think about final dimensions and pulled up this drawing. AALS standards, whatever they are. My question was about the back taper 0 - 8 degress being a bit open ended. Then I pulled up a wheel drawing from a mag,for an Atlantic and found it to be quite different, only 9/16 thick including a 1/16? thick flange. Very different !

I have done some google and found nothing to help, I am out of control here, lol.

What should I be doing here ?

With Thanks

Pete

Edited By Pete White on 24/01/2019 17:47:39

Thread: What Did You Do Today 2019
18/01/2019 21:08:41

P. S. 45 minutes a blank, EN8, turned it once when about a third way through.

Bet a fancy band saw would have whipped that by a mile, but both my saws came F.O.C...................and I have owned them for thirty years.

18/01/2019 20:23:42

Well apart from rebuilding my Ajax donkey saw, I sawed off three wheel blanks, with my Manchester saw, from a 4 inch billet. It has not had such a workout for quite a while.

Why only three blanks? .................going to try out the Ajax tomorrow. One must go, a man does not need two donkey saws. lol

Thread: New Bandsaw Gloat
17/01/2019 08:45:30

Nice bit of kit there, sod the expense. Had a quick look for price and got bored, but just remember lads that £750 will barely get you a week in a residential care home. So might as well spend the money and enjoy.

That said I fettled up my old Manchester only yesterday. lol

They do tend to walk about a little as mentioned. My old Rapidor didn't do that, might have been because it was about five times as heavy lol

Edited By Pete White on 17/01/2019 08:49:40

Edited By Pete White on 17/01/2019 08:53:11

Thread: Gatwick Drone 'Attack'
09/01/2019 09:28:46

I don't we are getting all the information here.................as usual .

Thread: Nylon for axle boxes ?
06/01/2019 15:48:44

Thank you Keith for that detailed explanation, I understand the table now.

What I am seeing is that with say the short 0.75 springs there is not much difference between free and solid length. In the case of type 47 on 0.23.

So what I think I was originally trying to find out, in hind sight, was how much suspension travel is a reason amount to design for.

I am working from drawing form 5g drawings in M.E. which show horn brackets at 2 inches and as I said with bearings at 26-28mm only leaves 19 ish mm for the springs to live in. This is not exactly my area of expertise but understand that "proper" loco builder do use ball bearing?

With Thanks

Pete

06/01/2019 15:47:35

Thank you Keith for that detailed explanation, I understand the table now.

What I am seeing is that with say the short 0.75 springs there is not much difference between free and solid length. In the case of type 47 on 0.23.

So what I think I was originally trying to find out, in hind sight, was how much suspension travel is a reason amount to design for.

I am working from drawing form 5g drawings in M.E. which show horn brackets at 2 inches and as I said with bearings at 26-28mm only leaves 19 ish mm for the springs to live in. This is not exactly my area of expertise but understand that "proper" loco builder do use ball bearing?

With Thanks

Pete

06/01/2019 13:28:54

YES, I did think about question 3 quite alot , but my reasearch did not give me an answer that I understood.!

As follows

If using compression springs for suspension on locos, bogies, etc we recommend you decide what weight you need that item to be able to carry (or its resting weight in the case of locos) then double it for the lb at full compression. If you then put a spring (or multiple if need be) on each axlebox to meet that maximum compression then when on the track the axleboxes will sit halfway up in their slots/ on the spring meaning they have movement both up and down to follow the track.

springs

so if my loco weighs say 100 - 120 lb doubled gives 240 lb = eight springs at 30 lb ?

So ref. no. 47 springs needing 0.75 inches in th hornblock?

The above description was not very clear to me, have I now got my understanding correct?

I still do not understand max solid length or lb / Lb

With Thanks

Pete

Edited By Pete White on 06/01/2019 13:39:20

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