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Member postings for Speedy Builder5

Here is a list of all the postings Speedy Builder5 has made in our forums. Click on a thread name to jump to the thread.

Thread: Boxford spindle speeds
10/12/2010 18:11:01
Just been outside to the workshop.  Yep,  my model 'A'  AUD - III- 18993  has its original speed plate as follows:-
 
Un-geared   1400  850   540   340   210
Back Gear      270  165   105     66      40
 
Having checked a few speeds with my rev counter, they are in the right ballpark,  with a fast seed of 1406 (282 back gear) and lowest were 228 (44 back gear).
 
The model 'A' has the motor in the cabinet underneath the lathe bed.
 
 
10/12/2010 17:28:44
Update.  Have a look at this site:-
 
 
The speeds are contained within the text.
10/12/2010 16:43:13
I have the BOXFORD    Know Your Lathe manual for the AUD and model 'A,B and C' lathes, and there is no mention of spindle speeds.
 
I have an AUD,  and will put the tacho on it  tomorrow if you like.
 
Incidentally, the above manual explains screwcutting, thread sizes, morse tapers, pullies in its 116 pages
Thread: Fluxes
09/12/2010 16:43:17
Off topic / On topic,  I don't know,  but the topic is FLUXES. 
 
For lead soldering stainless steel, use Phosphoric acid - Jenolite does well as a flux, but be carefull of the eyes, and if using a lot, do it outside as it doesn't improve your tools when it condenses on them.
Thread: drilling paper
06/12/2010 19:23:54
Hollow punches seem like the way to go - Thanks
Thread: Clutch in push rod to disconnect drive?
05/12/2010 20:03:20
Could the rod be made into a piston/cylinder arrangement, with a relief valve opened to stop motion, and closed to 'lock' the cylinder, using oil or something to hydraulically lock it.
 
I have seen electro magnetic clutches working off 24v Dc, but perhaps you wanted a mechanical soloution.
Thread: drilling paper
05/12/2010 19:57:29
Any ideas for drilling 1/4 inch holes in a wad of paper of about 60 sheets ?
Thread: Band saw conversion
05/12/2010 07:38:42
All good stuff and thanks for your thoughts.  I did wonder if anyone had experience of using the speed controlled wasing machine motors, which part of the electrics is used for the motor,  and how much power these motors generate ?
 
There are plenty about as the ladies do like a new machine well before the motor gives up.
 
Back in the 70s, I made several saw benches up from washing m/c motors (and no electric control).  I just kept connecting the jumble of wires up until I got the right speed  and direction.
Thread: Drill bit types
04/12/2010 16:03:54
Never come accross a rolled drill bit, just plain machined, and machined with clearance lands right the way up the drill on the edges of the spiral.
Thread: Cheap source of mild steel plate
01/12/2010 18:17:22
My stockholder doesn't do flat plate,  and the next one is about 80Km away.
Thread: Band saw conversion
01/12/2010 18:14:26
Just checked, DEWALT 739 varies speed between 330 and 800 M/min.
 
Cor,  eventually found the Pop mech Nov 43 article - good idea.
 
Speed control was dismissed in an earlier request for information as the power would deminish long before the speed did, leading to burn out.  My motor is 750w (about 1 Hp).
 
But thanks for trying guys.
 
Bob
Thread: Cheap source of mild steel plate
01/12/2010 12:29:24
Visit your local steel stockist,  and beg some offcuts of steel hollow box section with a wall thickness the thickness you want.  Get it home and chuck each piece onto your open (or closed) fire, bar b que or bonfire.  Get them up to red heat for a while and let them cool slooowwly. This should stress relieve them.
 
See the forum tip "Cutting steel plate"  and cut the box section along its length giving you some nice bits of metal.  Why cook them - if you don't,  they curl up like a banana as the rolled stresses are relieved.
Thread: Band saw conversion
01/12/2010 12:15:29
Good idea Ian, but the motor pulley is already about as small as you can get it,  and the large pulley can't get bigger.  It would need a complete re-hash of pulleys mounted outside of the bandsaw chassis, however I like the idea of the 1400 rpm motor.
Bob
30/11/2010 19:35:04
I have a DEWALT DW738 woodworking bandsaw - a good bit of kit.  It has a blade speed of 330 and 800 m/min.
 
For steel I need about   30 - 40 m/min.
 
I would like to retain both wood and metal cutting capabilities.
 
The motor is a 2830 RPM 240volt motor that I am told can't be speed controlled.  There is not an easy way to put reduction gears/ pulleys within the cabinet,  Replacing the motor with a fully speed controlled motor would probably be too an expensive an option.
 
Has anyone had a similar problem and a soloution to it. 
Thread: home castings / metal alloys
30/11/2010 18:57:48
I have often thought of melting down scrap water fittings to make bar stock etc. What sort of metal bar would this make,  and would it be suitable for steam fittings and boiler work ?
 
Can anyone offer good metalurgical advice here please?
Thread: Cutting steel plate
29/11/2010 17:40:21
I don't like hacksawing thick steel plate, and have had success cutting with a large angle grinder cutting disc mounted in a bench mounted circular saw.
 
For safety, check saw rev/min and disc max speed and cutting suitability.
Wear breathing mask and full face visor protection.
Wear thick leather gloves.
Possibly ear defenders.
 
Cover all other machines with cloths, or preferably work outside.
If possible, use some sort of extraction system that is spark proof. You can buy spark arrester bins for cleaning out ashes etc from fires and connect to your extractor system.
 
I have cut MS, SS and gauge plate (without hardening it) quite successfully.
 
Good luck.
Thread: Setting Piston Valves
23/11/2010 18:41:33
All good information,  and thanks for taking the time everyone.
22/11/2010 18:05:28
Thanks for the input.  I guess you have to leave both valve end caps off (No support / guidance for the valve pushrod), as there would be no way to get to the adjustment nuts.
21/11/2010 20:41:29
I am building a 5" SPEEDY, and have LBSC's book and plans etc, however there is nothing that I can see about setting the valves themselves.  The engine has outside cylinders and conventional piston valves on top of them.
 
The inconvenient problem could be that the piston valve covers are held on with three screws, one of which you have to remove the cylinder itself to do the screw up.  Adjustment could be made without the covers being fully screwed in place, and finally assembled once the adjustment had been made.
 
Any ideas of how I should go about it, or web site reference etc. ?
Thread: Transporting 5 inch live steam loco
09/11/2010 19:14:50
I will be making a 'lightweight' travelling hoist - ceiling mounted rail for moving from workshop bench to 'storage shelf' within the small shed, and using a 6 pulley block and tackle for lifting etc. 
 I expect the cost is a bit high, but have you researched mobility hoists for the disabled ? - you may find one on e-bay etc
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