By continuing to use this site, you agree to our use of cookies. Find out more

Member postings for Phil Whitley

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

Thread: What should I budget for getting a workshop wired up?
12/10/2014 12:03:47

Hi Circlip/Ian.

Sorry, but that is a wind up on someones part, in order for the 5 amp fuse to carry enough current to blow a 60 amp fuse it would have to carry about 90 amps, less if the supply fuse is an HRC (high rupturing capacity) type, even allowing for the most generous fusing factor of 1.5 times the rated current, a 5 amp fuse will carry 7 1/2 amps before it blows. The chandelier cannot have been protected by the 5 amp lighting fuse, which means probably that it is not fused at all, and needs investigating as a matter of priority. Electricity is usually governed by the laws of physics (not always, see lighning) I have investigated electrical faults like this before, and usually found that what appears to be happening, is not actually the cause of the "unexplainable" On one occasion a previous owner had very carefully arranged his wiring so that the stuff used the most often, bypassed the meter, and thus the only protection was the service cut out fuse! very dangerous. You must remember that the Lecky board man is trained to do the job he does, but generally they are not trained as electrical engineers.

Phil

11/10/2014 16:31:11
Posted by Swarf, Mostly! on 11/10/2014 11:03:36:

Hi there, all,

It seems nowadays to be commonly thought that the more RCDs and/or RCBOs you throw into an electrical installation, the safer you will be.

You might be safer from electrocution but you could easily die of frustration! My point is that nobody (except the IEE Regs, sorry, BS7671) ever seems to mention discrimination.

It's important that, if you get a fault, the protective device that trips should be the one closest to the fault. The installation design should avoid/minimise nuisance tripping that takes out good circuits along with the faulty one.

If the structure of your wiring 'tree' has several RCDs and/or RCBOs in cascade, all of the same fault current & trip time rating, it's unpredictable which one will trip first. Read the catalogues of the popular suppliers and see how often/rarely there is any mention of those parameters!

While I'm at it, I'll chuck in this one too - if all your domestic installation is 'protected' by a single main RCD and, while you're on holiday, a spider commits hari kiri in some remote junction box, you're going to experience an awful pong when you return home and open the freezer door! IMHO there are some appliances whose character and situation are such that RCD 'protection' is OTT - a sound CPC should be enough!

Best regards,

Swarf, Mostly!

Absolute common sense!!, but you try convincing the IET of it! One thing that makes them all mumble and look the other way is when you tell them that RCD's, MCB's and RCBO's are NOT FAIL SAFE!! If they fail internally (and who knows where they are actually made?) then the only protection remaining is the fuse in the supply equipment, which is occasionally 60, but usually 100amps! That is why we have to calculate the prospective fault current!

Phil

Thread: Vintage motorbike
09/10/2014 08:55:02

Hi all, Just read back and see that Michael knew about the queens chickens, and also probably AllJunkSpares and BitsStuckAnywhere.. My Friend Richard had a greeves with the cast frame and leading link forks, but it had a 197 villiers engine (9E?) like this one

http://commons.wikimedia.org/wiki/File:Greeves_20DC_197cc_-_Flickr_-_mick_-_Lumix.jpg

Them were't days tha knaws!

Phil.

09/10/2014 08:31:51

Hi Michael G, It seems to be a confusion in terminology, you call them parraleel twins because the cylinders are side by side, I had always considered that in a parrallel twin the pistons went up and down together, and in a 180 twin, they were opposed, hence the vibration problem was always referred to as a problem "inherent in parralell twins" wheras 180 twins are balanced much better. Now I stand back and reconsider it all, I take your point!

Phil

Thread: Colchester Student Mk1Roundhead lathe
08/10/2014 18:40:33

Hi Richard, I will post the pics you wanted here, but if you send me a pm with your email address I can post them straight to you if you need the files. I did three because I didnt know if you were going to photo etch and needed a good likeness, anyway, here they are.

Phil

Thread: Vintage motorbike
08/10/2014 18:07:40

Hi all, Sorry Mr Gilligan the Ariel Arrow was a 180 deg twin, not a parralell., but they were as you say a brilliant bit of design, if only they had used twin carbs instead of a single carb single port setup through the engine mount, it would have been a jap killer! I bought a job lot of Arrows in the seventies, there were three arrows and a special racer in a tubular frame, along with a 250cc 4 valve Rudge grass bike which would be worth a fortune now, happy days!

Phil

PS, so no one knows where the Queen keeps her chickens then, I am surprised at you all! It is relevant to the original post.

Thread: Colchester Student Mk1Roundhead lathe
08/10/2014 08:57:49

Hi Richard, Will get you a close up pic if the Gamet badge today as I am going to the workshop.

Phil.

Thread: Vintage motorbike
08/10/2014 08:48:09

Beautiful bike, and not a common one either. The question is, where does the Queen keep her chickens? Micheal Gilligan, You lucky lucky man! a visit to BSA! My dream bike was the rocket three, but I had to make do with an old plunger A10 Gold flash. Our local motorcycle shop was Watkinson Motors in Scarborough, and the owners son had a Rocket 3, he used to barrel through our village playing tunes with the gearbox! The best school trip I got was Parkgate Steelworks in Rotheram, then on to Moore and Wrights in Sheffield!

Phil

Thread: CovMac Lathes
07/10/2014 22:06:59

I understand your point about chains, but unless you are using a rust old lump of chain you found in a field, you are pretty safe! You should never lift with anything except the chain, rope or strop designed for that purpose, and it should of course be in good condition. Chains are very strong, and it is doubtfull you would snap a proper lifting chain unless you were attempting a lift like a traction engine. I have two hook chains sets from a blackhawk eurodozer car straigtening jig, the links are about 5/16 diameter steel and the hook is specially shaped to hook onto the chain to form a loop. One of them would lift the entire complete covmac with ease as they are rated at 20 tons! Like wise you hear horror stories about wire rope, but the golden rule is simply to use equipment that is in good condition and rated at well above the weight you are lifting, and if you see the filler twine coming out from between the stands of wire, RUN!

Phil.

07/10/2014 18:14:06

Or rather top pic is out and bottom one is iin (driving)

Phil

07/10/2014 18:11:56

Hi All, Brian, we were right! the clutch s far cleverer than pins or dogs. From what I can see, or rather more what I can feel when I operate it, there is some sort of spring loaded over-centre mechanism which pulls a plate over inside the drum. I an guesing at plate really, it could be a cone, whichever the take up is smooth and very positive, with no perceptable slip that I can create by hand. I all looks very straightforward to strip, as long as the contersunk screws come out of the drum! Mine also has a liberal coating of grease or oily gunk, but the lathe was working fine so i could be some sort of metal (bronze?) friction mateial. I have included two pics below (I hope). I have stopped trying to get the text and pics in order, it seems to make up its own mind where it is gong to put them, apparently regardless of the cursor postion. Pics show clutch in and out.

Phil.

Thread: Colchester Student Mk1Roundhead lathe
06/10/2014 21:53:16

Hi Richard, Sounds exactly like mine,, I have the sliding levers and also the two speed motor as well, controlled by a rotary switch just under the drip tray.. Mine is a late 1961/early1962 model, straight bed. If you get the number from the top surface of the bed at the tailstock end, there is a list of serial numbers on www.lathes.co.uk, and you can date it.

As for tooling I would go for the most rigid if you are turning large work or using big cuts, and also lock the carriage if you can, especially when parting off. Smaller work, model making etc, you will be able to get away with using lighter tooling. Remember though if you are using indexable carbide insert type tooling you need the set up as rigid as possible if you are to use the full scope of the carbides ability. For most work you can use HSS and get as good and often better results, carbide is good for roughing castings, aluminium, which tends to ball up and stick to HSS, and also for problem metals like copper. I use HSS most of the time, but I have a good selection of carbide tipped and indexable boring bars, threading tools and the like., If you need any more info just ask, there are many knowlegable people on this forum and we love pictures of lathes, so get your camera out!

Phil.

Thread: CovMac Lathes
06/10/2014 21:15:16

Hi Chris, It is only since you started this project that I have looked at the clutch mechanism, it appears to push two pins into a series of holes spread around the V belt pulley. Whilst that is what I can see I think there must be a bit more too it than that, I will look tomorrow. Referring to your picture if you remove the pivot bolt from the clutch arm , and loosen the nuts with the sc4rew slots in the bolts, the clutch arm comes off. I will check the exact details tomorrow. I removed mine because it sticks out quite a lot and I didnt want to break it. It may be a malleable casting, it may not, just not worth the risk. Good progress and good news that the headstock is loose, well done that man!

Phil

Thread: Colchester Student Mk1Roundhead lathe
03/10/2014 21:02:49

Hi Richard, Yes, thats the one.. The Mk1 has two slots on the apron for sliding and surfacing, the "mk1 1/2" uses the mk2 apron with the in out lever and the knurled knob to switch between sliding and surfacing. Is this what you mean or is yours different at the feed /SC box end?

Phil

02/10/2014 12:10:12

Hi Richard, do you have a manual, because I can send you a pdf if you haven't. I would like to do this on mine too. I gather that you remove the apron first, but I was just going to "go for it"

Phil.

Thread: CovMac Lathes
30/09/2014 19:38:25

Hi all (or both?)

Mine is the 13" model Brian, but it isnt the one illustrated on lathes.co.uk, which I assume is the very early model. Mine seems to be exactly like Chris's apart from small details (mine has a lever lock on the tailstock, though this could be a latter addition) The 17" has the motor actually inside the much larger foot. When I first saw mine on ebay, I was convinced it was a 17 untill I actually saw it in the flesh, it was the headstock pillar with the "cupboard door" (access to belt adjusring nut) that fooled me!

Very valid comments about the weight of the motor and mounting hanging off the back, and also out of balance jobs. I will be aware of that when I install mine.

Phil

29/09/2014 20:38:49

I would use slings rathey than rope, something like these,

http://www.recovery-equipment.co.uk/strops-slings-lifting-double-single-simplex-duplex/strops-slings-lifting-double-single-simplex-duplex/269/d2000kg-4m-strop.html

They don't stretch or twist like rope does. The rope was for "illustration purposes only) I don't like rope for lifting heavy stuff, much prefer strops/slings, or chains.

Phil.

29/09/2014 18:39:10

Hi again, just to add, I also am assuming the drip tray is samwiched between the bed and the legs, you will see when you lift the bed, and once the bolts are clear it should just slide off. I wouldn't worry about the concrete too much Chris, looking at the pics, and at the feet on mine, there is not much depth at all, I think he has grouted round it just to stop it moving sideways.

29/09/2014 18:34:11

Evening all, I have been taking pics again, first the carriage lock, tighten it down once you have closed the half nuts.

then I got my best rope strop and mocked up how I would lift the bed once the headstock was off

and finnally the lifting point, putting the hook of the crane where the shackle is, just above the tool post.

you can then try a lift to see if it is balanced and move the carriage either way to achieve this, then lock it .

My order of the day would be;

Put the leg bolts back on, or when you try to lift the headstock it will lift the whole lathe if the headstock is stuck with paint.

Remove the headstock, pallet it and trundle it away.

free the legs from the concrete.

Try a lift on the bed, get it balanced and lift the bed just clear of the legs. (now it geta "hairy"

take out the legs and place the bed pallet over the legs of the engine crane, blocked up on timber baulks so the crane is not trapped under the pallet.

Lower the bed to the pallet and strap it down.

If you need to go out of a doorway to exit the shed, use the crane one end at a time to remove the baulks and lower pallet and bed onto rollers.

once outside you can pick it up again and place it across the engine crane legs, leaving some weight on the crane, and trundle over the plywood sheets to the road.

If you do it this way, you will not have to move the engine crane with the bed at height (ie to clear the legs) which is very risky.

Having said all this, moving lathes at 300 miles range is easy, it is easy to not appreciate the full magnitude of problems you may have to deal with, you will be there, unfortunately, I will not. I am now seroiusly considering moving my covmac in bits, because I have to get it through a doorway, and I don't know if I have sufficient room to turn it round. with the legs on. What do you think to the above Brian?

28/09/2014 20:24:38

Hi Chris, I think you misunderstand Brian, what we mean by the bed lift is to place a tube through the holes, and attach a long strop or chain to it, attach the other end of the chain to the other end of the bed, as near the end as you can get it, then put the crane hook in the centre of the chain, lifting as near to the centre as possible. The two parts of the chains over the hook should be at about 90 deg to each other and as you lift you will see if the bed is lifting evenly, if not move the carriage towards the light end till the weight is even and the bed stays horizontal. I am at my shop tomorrow, I will look at the bed and see if I can find good attachment points other than where the tube goes through.

Phil

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
Warco
cowells
emcomachinetools
Eccentric July 5 2018
rapid Direct
JD Metals
walker midge
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest