Here is a list of all the postings Pat Bravery has made in our forums. Click on a thread name to jump to the thread.
|Thread: Holbrook Lathe Information Please|
I am trying to get information on a Holbrook lathe, on the brass speed data plate is Model SC2, I can find no reference to that model on either the Holbrook website or 'lathes.uk' site. The lathe is a gap bed type and I am afraid that the photo's are not the best in the world but hopefully someone might recognise it. Thanks for looking, Pat
|Thread: Chester Machine Tools Forum|
Hi John, I contacted Chester Tools some time ago about the missing forum and was told that they no longer support it. I did contribute some mods regarding the Chester 16v mill to the forum so if I can be of any help then feel free to use the private message facility. My mods concerned moving the up & down handle from the vertical to horizontal and making a fine quill adjuster and fitting a motor to the longitude axis, I also fitted a cooling fan to the motor. Hope that this helps, regards Pat
|Thread: Mystery Bamford engine|
I have removed the capacitor so that I could match it up but I have now decided to get the CO1 from Brightspark which seems to be the best way forward. The magnet is firmly clamped on my metal top bench and I have cleaned everything ready for assembly. Thanks all for your help and I will post the results of my labours good or bad in a few weeks. Regards Pat
I will probably fit the later type of condenser either a CO1 or CO2 which fit on the points plate depending on the rotation which I need to work out. The internals came apart fairly easily and it has been a very interesting journey. Thank you so much for all of your help. Best regards Pat
Following on I have just found the Brightspark page which shows how to do the job chapter and verse, I will try to digest it and report back on the results. Thank you all for your help and I do feel that I have taken up a disproportionate amount of your good nature. Best regards Pat
Thanks for all the replies. I have got the armature out and still can't see an obvious capacitor, I have taken photo's and the first one shows a small brown cylindrical object with a wire from the winding going into it, if it is I can't see how to remove it. Help! Regards Pat
Where would the condenser be? there is not one on the points plate where I would expect to see one, I have not completely stripped it down. I am on a big learning curve here. Thanks for everything, I will have another look tomorrow. Regards Pat
Thank you for that information, there must be a short elsewhere in the points. I am recalling my Morris minor days when the two sides of the points were insulated from each other when the points opened to cause the coil to energise, I am assuming that it is the same with a magneto. Regards Pat
Hi Martin, Thanks for your reply, I did a continuity test across the points and there is still a circuit when the points are parted so there appears to be an insulation fault there. I have not looked beyond the distributor cap and points yet but there does not seem to be a condenser fitted anywhere near the points. I think that the reality of it is that it will wind up as a static display but I would like to get it running. Regards Pat
I have removed the magneto and stripped the points and bakelite cap. The terminal screws were seized and corroded and I replaced the HT links as there was no continuity probably because of the corrosion and reassembled it. I fitted a new sparkplug which I secured against the magneto body and spun it with a cordless drill, hey presto a beautiful spark, sadly it soon faded and now there is the faintest of sparks. I will strip it again tomorrow just in case I have missed something. The magneto is a Lucas GJ4 which was fitted to tractors as Martin suggested. The easy answer is to get the correct magneto but the museum relies on volunteers and donations so the cash is just not there to fully restore the engine, our aim is just to get it running as an exhibit. I have attached photo's. Regards Pat
Hi Martin, Thank you so much for your reply, that certainly explains the links which I realise now are for HT leads. I was waiting for a diagram before taking it to bits but I will press ahead later in the week with it when I next go to the museum, it can't be that complicated and I did play with 50's motor cycles. I will post the photo's. PM also sent if I can work out how to do it, again many thanks, Pat
I have finally got back to looking at the Bamford engine with a view to getting running, I am told that it has run in this condition in spite of it being a mismatched collection of bits. The initial problem is that there is no spark, the HT lead seems to be wrong in that it comes from the body of the magneto rather than the bakelite cap, the points look OK. Before I remove the magneto I would like to have a diagram of the layout. The magneto is a Lucas and seems to be a GA or GJ type. If anyone has some information I would be very grateful. Regards Pat
|Thread: Tail stock adjustment|
Thanks for that, I will have another look at it later in the week as I am away for a few days. I do appreciate your advice and you have probably saved me from blundering into the job. I intend to recheck all measurements and if the readings are still the same I will still very lightly ream the tail stock MT2 socket on the bench to eliminate ovality and if the error is still there I will take the bottom tailstock plate off and skim the .18mm off the topside of it. I will report back probably next weekend. Once again thanks to everyone for the advice, regards Pat
I have had another look at the tail stock and inspected the MT2 socket and can see nothing obvious however I fully extended the barrel to 60mm and ran the DTI along the top and it is perfectly collinear so the fault must be with the MT2 socket. Could I fit a MT2 reamer into the chuck and gently feed it into the socket, my thinking is that it must then be in line with the head stock or should I remove the barrel and reamer it on the bench, ant thoughts would be appreciated. Regards Pat
Thank you all very much for your replies and suggestions, I fitted the test bar between the two centre's and locked the tailstock and the barrel so there was no movement, checked the headstock bearings for any lift and adjusted the tailstock laterally with the DTI on the top slide and the barrel about halfway which went very well and I am satisfied with that measurement, then I decided to check the horizontal along the top of the test bar using the same DTI and found the discrepancy. Tomorrow I will have a closer look at the MT's, I did clean them with a rag but will be worth a closer look. I think that the answer will be in something that I have overlooked so I will have another go tomorrow and report back. I have had the lathe about 3 years and only use it occasionally so there should not be much wear on the slides and all the other adjustments are about right. Once again thanks everyone for you suggestions, regards Pat
I have got an Amadeal CJ18A mini lathe and I put an 8 inch test bar in between a 3MT in the chuck spindle and a 2MT in the tail stock whereby I was able to adjust the tail stock quite easily. Then I decided to check the test bar for horizontal and found that the DTI show that the tail stock is higher, over the 8 inches, it rises by 0.18mm. I have stripped the tail stock and checked for swarf and burrs and anything that could cause it and reassembled it dry and I still get the same result. The lathe has not had much use so it should not be caused by wear, any ideas? I could put a shim under the headstock I suppose but am I missing something. Thanks Pat
|Thread: Non-Drip Gloss Paint|
Has anyone tried to get rid of a half full tin of paint at the local dump, ours in Caister will not take the tin unless it is completely empty. When I asked why all I got was a shrug of the shoulder, and I thought that it was a recycling centre, so what do we do with these tins, put them in the household rubbish?
|Thread: Metal Cutting Power Saw|
I have just bought an Aldi bandsaw and can't fault it, I saw the video on youtube regarding the poor quality vice, maybe I was lucky as my one is working perfectly, the wear in the vice is adjustable. There is a 3 year warranty as well. Regards Pat
|Thread: Mystery Bamford engine|
Thank you for the above very helpful information, the museum is at Repps with Bastwick about 10 miles north of Great Yarmouth. I spent many years working on Londons buses and thought that I knew about engines but it seems I have a lot more to learn. All help is appreciated. Regards Pat
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