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Member postings for Maurice Taylor

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

Thread: Is an internet connection essential to run Ardunio programs
24/02/2021 14:07:32

Hi ,regarding nano not working with XP machine ,the XP machine probably has a RS232 port, you could get a USB 2 to RS232 adapter from an ebay seller and try that.

Maurice

Thread: Steam engine , to start a steam engine
16/02/2021 00:11:52

Hi, most of the factory that built this has just been demolished and a housing estate is being built on the site.

Maurice

Thread: crane uprate - where would you add some metal ?
11/02/2021 10:07:09
Posted by Nicholas Farr on 10/02/2021 21:56:39:

Hi Maurice, so you lift 1 tonne just off the floor, then that 1 tonne is transferred to the hook and then the pivot pin in the end of the boom. i.e. the weight of an object is on whatever is holding it, imagine you have a bag of shopping on a set of scales and you pick it up, all the weight of the bag and shopping is then in your hand and the scales return to zero.

Regards Nick.

Edited By Nicholas Farr on 10/02/2021 22:14:59

Hi,thanks for your reply.I agree with what you say.I still don’t understand how the 200kg load in Reg’s post is 1.5m in the air if it only just off the floor.If the 200kg was 1.5m in the air, the base of the load would be 1.5m from the floor,then you would move at your peril.

If it was just off the floor ,you would only need to stop it swinging. I’ve done this with a 250kg engine and gearbox

Maurice

10/02/2021 21:28:35
Posted by Reg Rossiter on 10/02/2021 19:14:02:

One thing to be aware of with any lifting operation using a crane, including the type under discussion, is that as soon as the load is off the floor the mass of the load is effectively at the end of the boom where the fall attaches. In the case of an engine hoist that means the mass of your 200kg lathe you're lifting is now in effect about 1.5 metres in the air. Move it at your own peril!

Reg

Hi,Could you please explain why the mass would appear to be 1.5m off the floor ,if say you’d only lifted it 10mm.

Maurice

10/02/2021 10:59:04

Hi, just looked at my Draper 1 tonne engine crane , I don’t think any of the steelwork is designed to fail ,every bolt is a 14mm 8.8. Why would any body design steelwork to fail when it includes a hydraulic ram.The ram will probably have a yield valve to prevent it being overloaded.

Regarding the castors it is easier to control with only 2 swivels ,think supermarket trolley with 4 swivels ,goes anywhere.

Maurice

Edited By Maurice Taylor on 10/02/2021 11:00:52

Thread: Bridgeport power feed
26/01/2021 16:51:11

Hi, if you use a yellow site transformer ,make sure neither side of the items to be supplied are earthed,The 110volt from a site transformer is center tapped ,with center tap earthed.

Maurice

Thread: Fast charging anyone?
19/01/2021 19:43:34
Posted by J Hancock on 19/01/2021 18:09:48:

MT, yes, you are right that the units should be Watt hours but the principle Laws of Thermodynamics seem to be not applicable to this new form of transport ie something no more powerful than your Super 7 motor is powering a tonne+ of car along at 60mph..

This is truly amazing.

Hi,I’ve worked it out ,I think. Car travelling at 60mph using 300Wh per mile will use 0.3 x 60 =18kWh to do 60miles.

This means an 18kW motor is needed (18kWh divided by 1h).

Then I googled power needed to keep a constant speed of 60mph this was19kW.

Please somebody correct if wrong.

Maurice

Edited By Maurice Taylor on 19/01/2021 19:44:15

19/01/2021 17:42:13
Posted by pgk pgk on 19/01/2021 17:22:35:
Posted by J Hancock on 19/01/2021 16:19:38:

Real question.

Why /how can it only take 500w/mile to propel a Tesla at 60mph when a petrol/diesel has to output 30kw to achieve the same speed, with the same weight,,tyre,,bearings/rolling/wind resistance,etc ?

300w./m and very heavy carting the pack about too...
..perhaps to do with the drive units being (almost) attached to the wheels instead of going through clutches, gear boxes and prop shafts???
Also some clever jiggery-pokery with fore and aft drive units adjustng their power proportions (as they do) during cruise and of course reharvesting braking energy when available

pgk

Hi ,please correct me if I’m wrong but shouldn’t the unit per mile be “Wh” ,I think this is were any confusion is coming from.

Maurice

Thread: Viewing online archive
19/01/2021 12:45:00

Hi,I can still access all back issues with old mini Ipad ,using Safari and Model Engineer website.

Maurice

Thread: Disposable Gas Bottles
17/01/2021 17:38:57
Posted by not done it yet on 17/01/2021 14:33:35:

Anyone know the pressure at which compression fittings are no longer deemed safe? I’ve seen them fitted on vehicle hydraulic braking systems before now, but I would only use the proper flared pipe fittings in such an application.

Hi,I remember compression fittings being used on hydraulics down the pit .I used to fit them on 50mm steel pipes that carried soluble oil mixed with water at a pressure of 4000psi and 200gpm.They were often a mile in length.

Maurice

Thread: What air compressor should I buy?
06/01/2021 18:36:01

Hi, use the largest diameter possible for the fixed pipe around your shed. You can use 10mm hose to go from that to your air tools.If you google air pressure loss in pipe work you will find it’s quite a lot ,especially in small diameter pipes.

Hope this helps

Maurice

Edited By Maurice Taylor on 06/01/2021 18:38:33

04/01/2021 21:29:03

Hi, put “john guest air fittings” in ebay ,I think there is everything you will need.

Maurice

Thread: Super 7 Lathe Clutch, Countershaft or Pulley Wobble
03/01/2021 15:07:37

Hi, have you tried cutting with the tool on center yet?

When I got my ML7 ,some of my cutting looked like yours, I made sure I had got EN1A steel to practice with . I’ve always used HSS tools I’d read that they are easier for beginners and old lathes.

Whenever my cutting looked like yours ,the tool was either too low or too high or it was not ground correctly.

Also the gib strips need to be setup. Try this before looking at more complicated things.

Once I’d done all this I got a good finish .

Maurice

Thread: Myford super 7 lathe tripping consumer rcd
02/01/2021 16:24:43

Hi, another simple test to try ,is use an extension cable and plug into house socket

I don’t mean permanent ,just to test the lathe.

Maurice

Edited By Maurice Taylor on 02/01/2021 16:26:50

Thread: Oil proof brush?
18/12/2020 13:22:26

Hi ,try a parts cleaning brush from car spares shop or Ebay. Stiff bristles and other end cleans morse taper.Had mine ages been in diesel ,jizer ,gunk ,soluble oil etc.

Don’t know why it’s under lined .

Mauriced64feff9-c444-4285-88e0-76601abc13c5.jpeg

Thread: Useful MEW Table
08/12/2020 22:06:34

chart2Hi, Is this the chart you want ?

chart1

Thread: Myford Hoover Motor
04/12/2020 21:50:59
Posted by AJAX on 03/12/2020 23:57:03:

Maurice, I'm interested in your scope setup. I'm familiar with the picoscope as I have one myself but never seen or used the automotive one. Are you using it with a clamp meter probe? I have a clamp meter but not for the scope. If I needed current logging I might use a current sense resistor and do it that way.

Hi, My setup consists of Picoscope 4225 and a current clamp Picoscope TA167 .The automotive scope will also run the ordinary Picoscope software.

When I got my clamp I wanted to measure starter motor current ,so I couldn’t consider a sense resistor ,it goes up to 2000A, There is a cheaper Pico clamp at £99 , this goes up to 600A, I would go for a clamp,no chance of damageing scope.

Hope this helps

Maurice

03/12/2020 23:39:52
Posted by SillyOldDuffer on 03/12/2020 22:36:35:

I do suggest a half horse motor shouldn't ever trip a circuit breaker. Something ain't right. Earth leak would be my bet.

Dave

 

 

Hi,A 1/2 hp Brook motor on an ML7 takes nearly 50A for 100mS on start ,this will sometimes trip a domestic mcb but probably wouldn’t trip an inductive load mcb ,as previously mentioned .An earth leakage fault would trip the elcb not the mcb.

trace

Maurice

PS   If I’m writing rubbish , electrical experts please correct me.

Edited By Maurice Taylor on 03/12/2020 23:54:08

Thread: Myford Lathe Identification
03/12/2020 21:18:33

Serial number

Hi ,hope this helps with serial number location

Maurice

Thread: REME EMER
03/12/2020 13:20:49

1361d5cf-dead-44f3-933a-21eb985dcd5f.jpegHi,I’ve restored a Lucas K2F magneto ,changing internal capacitor etc ,wasn’t too difficult .

I made a simple test rig as it was hard to test it on the bike

l read somewhere that the spark needs to cross a 5mm gap in open air,which mine did.

Hope this helps

Maurice

PS If you need to take the armature out ,try to find out if it will affect the magnetism in the stator, best to try to do work with armature left in place .

 

 

 

 

Edited By Maurice Taylor on 03/12/2020 13:50:26

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