Member postings for Nick_G

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Thanks SteveI you have given me some good information.

I was wondering what the headstock taper was.?

Regards, Nick

Fair point Neil.

Perhaps someone should email them a link to this thread.?

Nick

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Thanks for the replies guys. I will address a few points raised.

Yes I know it will not be a cheap option buying a semi finished quality D1-3 backplate. The Bison 100mm one is over £100 then plus the cost of the 80mm Pratt Burnerd will take it into the region of a readily manufactured Pratt 125mm with a D1-3 fitting. - But nothing  of quality is cheap when it comes to engineering it seems.

Yes I have considered a collet chuck as an option but as Neil says I will get more use from the 80mm scroll I think. So that will go on a future 'wish list'

SteveI :- The STS 10-20 Boxfords spindle bore is 38mm / 1 1/2" not 1"

Many thanks again for the replies

Nick

Edited By Nick_G on 01/08/2014 10:44:31

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The D1-3 fitting 125mm Pratt Burnerd on my Boxford has seen better days.! Although I did get it fine for a short while by fitting some new jaws that were donated to me. It however soon returned to a wayward state.

It's usable, and there is lots more that I would prefer to spent the money on, but I feel it needs to be replaced.

I am considering purchasing a smaller chuck.! ( I can always fit the 125mm back in seconds if needed ) Possibly a Pratt Burnerd 80mm. My logic behind this (possibly flawed) is that a lot of the smaller parts seem to get swamped by the 125mm one and thus an 80mm will suit my purposes better.

The 80mm has a bore of 19mm so will pass most things needed to be turned for a Stuart type engine. Other things will be turned in my 4 jaw or on a faceplate, and as I said the 125mm could always be fitted back if needed.

So is buying new 80mm a good idea or shall I replace it with another 125mm.?

Cheers, Nick

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This :- (iPhone app or similar)

Plus :-

Plus :-

Plus :-

Half an hour with the drawing and it was all sorted for my Stuart James Coombes. While doing it I was familiarising myself with the general layout of the engine, which I imagine is time most people spend anyway.!

Nick

I have the same problem with one for a Boxford that I got from them. Very similar, just slightly larger than the Myford one so probably made by the same people.

Nick

I realised that. Hence the string of

Nick

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Nick

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I may be wrong on this but I 'think' all Stuart plans are still in imperial.

I say this as I very recently bought a set for a James Coombes engine and they are imperial.

Regards, Nick

Edited By Nick_G on 29/07/2014 09:28:52

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Cheers for the replies guy's

So shims it is then.!

Nick

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Any tips on how to lower the chances of leaving marks from a chuck on semi finished items.?

Obviously one would ideally finish the job with just one chuck clamping. But of course this is not always possible is it. Sometimes the part has to be turned around.

So taking aside the obvious of not swinging on the chuck key like Thor, using soft jaws, collets etc, etc what tips do others have for lowering the chances of leaving witness marks from chucks on the work. Is it shims of brass, aluminium or are there any brands of tape that are helpful in assisting.

Cheers, Nick

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I was only the other evening watching on youtube a short video about the Jacobs one. I found it quite interesting.

I am left wondering though if it was the cost of these or them not working as specified that has not made them more popular.

Here is the link to youtube :- **LINK**

Regards, Nick

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Thanks for the reply Bob.

I do know the size of the existing belt but I was wondering if the linked belt may be an improvement in decreased vibration.

Regards, Nick

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I have a Boxford lathe and the drive belt looks to have seen better days (bit like me. )

I have seen various mentions that 'linked belts' are good performers and a worthwhile upgrade to some machines. - So would such a belt (see pic) be suitable for my Boxford or would I also need to change the pulley's.?

The existing belt is a 10mm width V belt.

i.e. this type of belt (10mm Z section) :-

On this :-

Cheers, Nick

Edited By Nick_G on 21/07/2014 18:00:45

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At a guess. As the lathe (looking at the chuck face) spends the the vast majority of it's time running anti-clockwise I would say the chuck also unscrews anti-clockwise.

Nick

Edited By Nick_G on 19/07/2014 20:48:36

I agree.

Nick

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Hi Les,

I am in Warrington. - The machine is between Warrington and St Helens.

Cheers, Nick

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Hello peoples, I wonder if you can help me help a friend.

A long standing friend of mine has a small jobbing workshop and has a problem with an old mill. Most of his mills are Bridgeports but this one is of Polish origin.

Basically there is a problem with the control circuit.! The machine and it's motors are 3 phase but as is quite common the control circuit voltage is lower.

There is a resistor on the control PSU (seems to be a wire wound one) that has burnt out rendering the machine inoperative. (motors spin up fine if the contactors are manually 'pushed in' ) The machine plate says the control voltage is 220 volts, but I am not sure if this is AC or DC as there are diodes on the PSU that may be configured into a bridge to render the supply into DC

So what I am after is a circuit diagram that will hopefully tell me what value the burnt out resistor was and give me an overview of how the machine is configured electrically. - Does anybody know where I could get such.???

I am attaching photos that I took with my phone to help with its ID and for the general interest of others. (spot the Myford dumped at it's base in one of the pics)

Denis tells me that although old the machine is a good solid and accurate piece of kit. He is obviously reluctant to trade it in for scrap value for what seems to be a minor issue.

Thanks, NIck

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Me being a beginner un-all and having recently purchased and installed a lathe I am wondering if my opinion in an article may be of interest.?

What I did and probably of more interest what I would not do again.!!

Or is it articles from the seasoned and accomplished you require.?

Nick

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On BBC website here :- **LINK**

Nick