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Member postings for Matt Harrington

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

Thread: High blood pressure !
29/01/2020 09:19:13
Posted by Clive Hartland on 29/01/2020 07:50:31:

No mention at all of Ramapril cough nor to reduce intake of food high in Potassium. For some months I happily chewed a banana for breakfast until I checked on the Ramapril and found out about the Potassium intake.

Clive, That is interesting as my Doc has never mentioned about potassium with Ramapril medication. Off to google it now....

Thread: Digital Phase converter...
14/12/2019 10:51:41

Clive, there's a new venture for you!!

Matt

13/12/2019 18:24:36
Posted by Robert Atkinson 2 on 12/12/2019 18:55:02:

Where are you located? Maybe I could help with a better solution.

Robert G8RPI.

Robert, I'm in Sout Somerset, near to Yeovil.

Matt

13/12/2019 18:16:49
Posted by Brian Sweeting on 12/12/2019 16:05:28:

If you want an inexpensive way to measure the inrush current of your lathe you can get an amp probe attachment for a multimeter from here **LINK**

Brian, I think I have one of those somewhere - will expeiment over the next few days.

Matt

12/12/2019 16:02:33

Clive,

All interesting stuff.

The motors are, I believe, as follows:

The main motor is a dual speed 0.5hp/1.5hp 415V_ac 3 phase motor.
The speed change motor is a dual voltage (240V_ac/415V_ac) 1/20hp three phase motor.
The coolant pump motor is also a dual voltage (240V_ac/415V_ac) three phase motor. ( don't use mine)
The carriage feed motor is a 90V_dc motor.

The issue with the main motor (so I am being told) is that is is fully balanced and thus not a good idea to replace.

Matt

12/12/2019 15:31:09
Posted by Clive Foster on 12/12/2019 14:56:08:

Bottom line 10 hp box will do you just fine. 5 hp ought to but ....

Clive

Edited By Clive Foster on 12/12/2019 14:59:27

Mmm, it;s the same reply most of the time - "ought to be OK but..."

The 10HP verion is eye watering in price and definitely a no no.

Matt

12/12/2019 15:26:47
Posted by Andrew Johnston on 12/12/2019 15:16:13:

The VFD itself may be plug 'n' play but not in the sense that you can connect it to the 3-phase input to the machine tool and expect everything to work.

Andrew

Andrew, Dave frm Direct Drives says that I can operate it this way. (DRO's are powered separately)

Anyway, I'm glad you have a firm graps of electronics, unlike me!

Matt

12/12/2019 14:38:26

Dave, you are so right - all cloaked in mystery!!

If I could find the surge on start up in high speed, then all would be easy to ascertain. Personally I'm sure the 50% overload will be fine but I thought I wouls try and find out if anyone else had gone through this process.

Matt

12/12/2019 13:08:14

Robert, they appear to be quite different. The Digital phase converter is 'plug & play' and it means I can change motor speed and operate all 4 3 phase motors on the lathe without issue. If I used VFD's I would need to completely re-wire the machine. I'm looking at their 5HP unit.

This is an example of the 5HP unit: **LINK**

Matt

12/12/2019 12:38:32

Before I go any further, I am asking about a Digital phase converter rather than a VFD or similat inverter.

I currently use a rotary converter for my Hardinge lathe but (no matter where I place it) the noise is just a little too much for me so a while back I considered a Digital option from Drives Direct. Lathe itself is fairly quiet.

My question is whether a 5HP unit will be OK for the startup surge of the Hardinge (the main motor is 1.5HP) or has anyone installed one of these units? It is a big chunck of money to 'experiment' with and to go to the 7HP unit would mean I have lost most of my limbs in payment! Dave at Drives Direct has not shipped one to a Hardinge user and so can not advise.

Matt

Thread: Princess Marina
28/09/2019 15:44:27

Bruno,

I thought it probably easier in the first place that I PM you but discovered I can't. Can you email me on: matt@clockworld.co.uk

 

Matt

Edited By Matt Harrington on 28/09/2019 15:45:51

Edited By Matt Harrington on 28/09/2019 16:09:17

25/09/2019 14:44:11

yes, I'm about to embark on finishing off a partly well made version. Need to get my head around the boiler and pipework,

Marr

Thread: How many Hammers
25/09/2019 11:20:56

Er, I'm a little worried now, probably about 20 in one drawer and then I realised all the copper/hide ones. Then let's not forget all of my tiny watch/clock ones. Oh and what about all my lump hammers, sledge hammers, brick hammers....(and I also have not included mallets!)

Matt

Thread: 11/16" Parting tool holder
25/09/2019 11:16:52

JasonB, I'm using Tripan and Mulitfix but I was anticipating a 10/12mm holder that would then be held in a standard toolholder - if that makes sense!

MichaelG - The type I have are the chipbreaker ones - reduced width in most of the depth and a top 'v' groove.

Thanks

Thread: Princess Marina
25/09/2019 09:41:55

Anyone here building LBSC's Princess Marina?

Matt

Thread: 11/16" Parting tool holder
25/09/2019 09:36:01

Having discovered I have a few 11/16" parting tool blades, I was wondering of someone sould point me in the direction of a suitable holder - UK based. I'd rather not spend my tiome making one....

Matt

Thread: Regulators in Taper Barrel Boilers
11/09/2019 17:43:51

Bruno,

How are you progressing with your Princess Marina?

Matt

Thread: Another scam
29/07/2019 10:42:29

One thing that has worked for me it to answer the phone but not say anything. The 'nuisance' calls seem to click off after 10 seconds. Genuine callers will say something. My 'nuisance' calls have now almost dried up.

Thread: Shipping to USA
15/05/2019 08:57:20
Posted by David George 1 on 14/05/2019 20:11:12:

Hi Matt The rules for shipping go America are terrible and even the wood and packing materials must be to regular US standard. Any oil and coolant etc must be removed and certified clean. Get an agent to prevent it being impounded and or returned.

David

Very interesting and all the more reason to get someone to do it all for him.

Matt

14/05/2019 14:08:36

Hi,

Does anyone have any recommendations for a shipping company that could ship a BCA mill to the USA? (no stand)

Ideally, I would like them to palletise it and box it, handle the paperwork and do all the customs forms! (It's not for me but someone I know)

Any pointers would be great.

Matt

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