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Member postings for Speedy Builder5

Here is a list of all the postings Speedy Builder5 has made in our forums. Click on a thread name to jump to the thread.

Thread: Issue 249 Arduino Controller Indexer
22/05/2022 13:01:06

Probably doesn't help, but I run my NEMA 23 off of a 36volt 5 amp PSU.

power feed schematic.jpg

Thread: Any idea what these are for?
21/05/2022 15:54:45

Lathe tools ?? No apparent rake angles on top, side or front so I think they have another purpose.

Thread: Drone advice needed, please
13/05/2022 11:54:32

What constitutes to be an aircraft? Are there minimum weights, size etc.

Eg: Is a paper dart an aircraft ? A chuck glider, again a 20p chuck glider sold on the beach as opposed to a competition glider which could be seriously large and heavy.

Thread: Tyres
13/05/2022 11:46:37

John MC, start of thread "Recommended tyre pressure 32psi, measured pressure (3 different gauges) 45psi"

I suppose all 3 gauges could read high by the same amount.

Simple dead weight pressure test rig. Known weight on a piston of known area. I wonder how often the tyre gauges are checked at the tyre centre. Normal inflation kit is generally abused.

Bob

Thread: Drill bit storage
12/05/2022 18:14:57

Do you use more than one drill of a certain size at the same time ? If not, get / make a drill stand for just one drill of each size and store the spares back in your tub. When you snap a drill , replace it from your tub. You may wish to have 2 sets of drills, nice sharp precision drills and a second set for rough old stuff. If you do a lot of brass machining, you may need a 3rd set ??

Bob

Thread: Free To a Good Home
12/05/2022 18:07:54

I hope these could go to our younger members ??

Thread: Injectors
10/05/2022 16:14:45

Thanks Norm, Its a confusing subject when tubes may be specified as bore or overall diameter. I already have the #2 injector , so will persevere with that. I am making a new check valve with a 7/32 ball as specified by Macc models and 5/32 od steam feed pipe and 3/16 od delivery pipe. At same time making sure the cold flow is adequate by making a temporary cold from an auxiliary reservoir.

Once I can get it working, can refine the system.

Bob

Thread: What is this tool ?
10/05/2022 08:48:36

N D I Y - how would you get the tube out if it was flared ?

+1 for the apprentice piece, I think mine is rusting in the bottom of a tin box somewhere.

Bob

Thread: Rail wear
10/05/2022 08:45:06

Just wasting time this morning whilst waiting for something else and dropped upon this photo on QUORA.

So, all you loco drivers, don't spin them wheels !

rail wear.jpeg

Thread: Tyres
09/05/2022 19:15:43

Bernard and Noel, I did omit that living here in France the vehicle test is the "Control Technique" and yes, they do over inflate the tyres.

John, Its a French Renault car and the plate on the door indicates pressures in both BAR and PSI. Its strange that the tyre bay inflated the rear tyres when it was only the front tyres being replaced.

09/05/2022 16:47:37

Why do Tyre centres over inflate tyres. I recently bought 2 new front tyres. Recommended tyre pressure 32psi, measured pressure (3 different gauges) 45psi

Rear tyres which were 29psi inflated to 45psi.

No advice given like, check your tyre pressure after a week. Is it just so that the tyres wear down quicker ?

I have noticed that MOT stations also over inflate tyres before the brake tests - again no warning that it has been done.

Bob

Thread: Injectors
08/05/2022 21:12:10

Thanks for that gentlemen. I was trying to equate LBSCs injector for my SPEEDY loco where he estimated that his would inject about a pint in in 2.5 mins .

So with a No 2. 11 oz / min injector = 0.55 pint / min is approx 1.4 pints in 2.5 mins.

That should do nicely.

08/05/2022 17:54:09

What is the meaning of a No 2. 11 oz/ minute Injector. Does it have a capability of injecting 11 Oz weight of water or 11 Fluid Oz of water.

11 Oz = .372 Fl Oz = 0.186 UK pints

11 Fl Oz = 0.55 UK pints.

Thread: Gallium
07/05/2022 15:20:27

looks great - main producers are China and Ukraine !!

**LINK**

Skip down to :-

GALLIUM PRODUCTION AND CONSUMPTION

World production of primary gallium from bauxite and zinc was about 95 metric tons in 2008, with the top four producers being China, Germany, Kazakhstan and Ukraine.

Thread: METAL DUST & VFDs
02/05/2022 21:14:16

Why do you want to protect your VFD - you won't live to see the VFD die if the dust is as you say. First job is to put an extractor on the linisher !

Just as an example, my friend is a wood turner and has now a lung disease caused by dust from sanding an exotic wood piece on the lathe. Its so bad that he has had to give up wood work all together. Don't let the brass win.

Bob

Thread: Reilang Oil Can Nozzle Thread
02/05/2022 06:27:52

Howard, glad to hear that you have a solution to your problem, but if anybody wanted to continue reading :-

Reilang threads

Thread: 5"gauge speedy
29/04/2022 18:43:42

Today I was preparing for the French Pt 2 boiler certificate which includes raising steam and leaving the blower wide open to check that the safety valve is capable of venting sufficient pressure so as not to exceed the max allowable SWP.

After confirming to myself that the safety valve was capable of achieving this requirement, I used up some of the steam by static running of the loco on the test bed. After a few minutes, there was a disturbing clunk clunk .....

On inspection, the piston crosshead was detached from the piston rod having sheared the 5/64" taper pin, I then saw that the pin connecting the reversing rod to the valve crosshead was missing. It shows the force between the rotating motion and what I can only think was wet steam or condensate not being allowed to vent either by the cylinder drain cocks or the piston valve being at the wrong event.

The connecting pin between the rod and crosshead is a press fit into the thin walls of the valve crosshead - obviously not tight enough. A minor re-design is in progress

radius rod pin.jpg

Thread: Imported Boxford ME10 Needs help
29/04/2022 06:55:36

Just an observation, should the cloverleaf, ring or whatever be located on the tips of the jaws (as per video) or as close to the chuck as possible. During the life of the chuck, the jaws will wear in their slots making them appear "bell mouthed"

Steviegtr, it may be a Southbend backplate which had the 60 degree thread instead of the 55 whit worth form.

Thread: QR codes
22/04/2022 15:58:42

Ah, those were the days, 5 hole tape, 8 hole tape, sticky patches to correct miss punched tape, Friden Flexowriters, Teletype ASR 33s. Would you believe that some of the early Concord(e) wind tunnel results were run through Pegasus analogue computers and the 5 hole output paper tapes read by eye and then plotted on graph paper for the Aerodynamics Office.

Oh,  and those punched chads - we used them as confetti and they got everywhere !

Anyone remember the foot ball results coming through on a Saturday afternoon ... Tac tac tee tac as each letter arrived at the teleprinter - Oh such excitement !

 

Thanks Michael, I will have a read of that link later.

Bob

Edited By Speedy Builder5 on 22/04/2022 16:00:00

Thread: Got the engraver working
22/04/2022 06:33:39

Hi Mark, are you going to plant them on that keyboard ??

(Name withheld)

Bob

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