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Member postings for Ian S C

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

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Thread: Dean Smith and Grace
06/11/2009 12:09:53
One of our local engineers,when he set up a work shop to service his brickworks,bought the DSG lathe that he used about 40yrs ago(it was'nt new then)but its a wee bit bigger than the average modeler could house,its at least 6ft between centers,and I think the chucks are 18",but a nice machine to use,if its anything to go by any DSG lathe would be great.IAN S C
Thread: Compressed air on lathe
06/11/2009 11:54:05
Hi Circlip,I think there was another article on mist cooling,maybe in the 80s,I may be wronge,I may have seen it in one of my older copies,I'll check it out,I was going to try it a few yrs back.IAN S C
Thread: Hot air and stirling engines
05/11/2009 10:06:09
Mark if you do come up to Homebush on the 15th I 'll be taking a vacuum/flame gulper up,I think I'll leave the free piston motor at home because I need to redo the springs on the power piston,it seems to have found more power,and needs more restraint.It will be the motor in the drawing I gave you,its going well on meths,even better on gas meths combined,the meths stops the gas getting blown out.I ran it tonight in the dark,it was quite interesting watching the flame being exhausted.IAN S C
Thread: Drive pulley wheels and V belts
05/11/2009 09:50:23
If your motor is single phase,its proberbly 4 pole so it will run at about 1420rpm so you can use that as a point to start at to work out the spindle speed. Rule(1)Revs of the driven pully=dia of driverxrevs of driver divided by dia of driven.Rule(2)dia ofdriven pully=dia of driverxrevs of driver div by revs of driven.Rule(3)revs of driver pully=dia ofdrivenxrevs of driven div by dia of driver.Rule(4)Dia of driver pully=dia of drivenxrevs of driven div by revs of driver.A few handy formula if you can unjumble them.If you'r a mathematician like me you either need a calculator,or lots of fingers.Just watching the unvailing statue of Sir Keith Park in London on the TV news.
05/11/2009 00:45:20
I was reading a site on Barker lathes last night and it indicated that changing from one ratio to the other was a rather tedious exercise,I think you know the site on Google.An interesting machine.You'll proberbly find one ratio suitsyou for most,and there it will staymost of the time.New-t-Lock and similar jointed belts are ideal for drive on lathes.IAN S C
Thread: Humidty
03/11/2009 09:07:25
My workshop is a galvanised iron clad shed with no insulation,temperatures range from -10c in winter to +30c in summer,never had condensation problems ie no rust on tools,I suppose every thing stays at the same relative temperature,It would be nice to be a bit warmer in winter.IAN S C
Thread: where can i buy a bell punch?
03/11/2009 08:48:00
Might be nice to have if you collect vintage tools,As meyrick says a center suqare is far more use,seem to remember making one in metal work at school,its gone now,but they are simple to make.
Thread: Hot air and stirling engines
03/11/2009 08:32:39
Mark if you see this have a look at your E-mail,I'v tried sending a bit about the motors that were there on Sunday,your mail got through ok.IAN S C
Thread: where can i buy a bell punch?
02/11/2009 10:40:43
Make it!I'v never seen one in this part of the world,not to say they'r not out there.There is a cut away drawing in Lawrence Sparey's book The Amateur's Lathe,in my copy its on pg 112.Its also shown in How To Run A Lathe a book by South Bend Lathe Works,a handy little book on all aspects of lathe work.I'd tend to look among second hand tools,In the brief time I was in England 25yrs ago I went to a sort of market at Eastbourn,there was tool by the truck load,I imagine they still have sales like that.I use either odd legs or V blocks on the surface plate.Happy hunting IAN S C
Thread: Case Hardening
01/11/2009 12:17:18
Workshop Technology part one W.A.J.Chapman p43 about a page on case-hardening.A few little differences,your (4)900degC (5)770degC (6)Temper at 200degC or more depending on required hardness.There is a paragraph on superficial hardening using cyanide salts etc,When I was at school in the early 60s we had salt bath facilities,but we wern't allowed to do any hardening ourselves even then(we broke most of todays OSH regs every time we went into the workshop),I'v got Chapman 1&3,if I can i'm looking for 2.IAN S C
Thread: Hot air and stirling engines
01/11/2009 11:33:15
No worry,picture looks ok were it is,at that stage it was generating 6.45v and powering the fan behind the radiator,a radio,and one of the lights on the control panel(out of 8),later I had my little power hacksaw on it,but didn't have the correct pullies,it didn't get through the 1/2"dia steel bar for some reason,usually only takes 15-20 min,try again on the 15th.The turbine was installed in 1881,I think the order for it went out about 1878,it came from Dayton Ohio in USA,and comunication was by sailing ship,so if you wanted a reply tro a letter it would be 6 months or so,then after it got to NZ it would be brought the 50km from Christchurch by bullock waggon,today-send E-mail load into container,3wks at sea,on to truck at the port,an hour later its arrived,then again it would proberbly be built here anyway,and produce more than the estimated 8hp.Well our engines had a good run,and created a bit of interest,there is always someone curious,wanting to know how they work,occasionly i'v had people who know a lot more than I,Canterbury university is a center of study for hot air power,also in the past we'v had visits from some that work for Whisper Tech.IAN S C
Thread: Diamomd tool holder
30/10/2009 11:56:02
See page 119 vol 1 no 7 Model Engineering,fig 2A tangential lathe tool,it uses old warn round files for tools,these are held in place with a cotter driven in behind the tool from the top. [Note_Many readers will proberbly prefer to make their own tool-holders;but Mr Don informsus that,if desired,he will be pleased to supply holders such as he describes complete,with three cutters,at from 1s. 6d to 3s. each,post-free,according to size.-Ed.,M.E.] Think the offer is off now-IAN S C Nothings new
Thread: Riveting
29/10/2009 11:28:53
Steel plate the desired thickness,drill for the rivit size(unless your only using one rivit,drillfor quite a number)Clamp the loaded plate to a piece of wood(so the rivits don't fall out)Hold the lot in the vise,get to work with a sharp cold chisel.IAN S C
Thread: Power hacksaw
29/10/2009 11:15:37
The drive arrangment on my swinging arm saw was belt drive from motor to jack shaft,then gear drive to the crank,can't remember the ratios,but if you get between 60-80 your not too far off spot on.IAN S C
Thread: Old Model Engnieer Magazines on CD/DVD???
29/10/2009 11:00:49
Just a question,does anyone know how many volumes were done of the facsimile editions that were published by Argus Books in 1976 and reprinted in 77.If you can access vol 1,go to page 119 Tool-Holders for Lathe Work,fig 2 (it use worn round file for tool)a tangental tool and holder,it uses a cotter to wedge the tool in place,other than that its the same as the one being advertised now,nothings new!!IAN S C
Thread: Balancing the steam pressure on the slide valve
29/10/2009 10:31:49
HI guys I'm no steam man,but definitly an experimenter,I'd tend to try one cylinder balanced,and the other unbalanced to compare the wear rate,could be interesting.IAN S C
Thread: New Subscription Freebies
29/10/2009 10:21:18
Hi terry,you and I both,but perhaps I'm too far away in Kiwi land,tho my sub's about nzŁ220 pa.,not complaining tho.IAN S C
Thread: Old Model Engnieer Magazines on CD/DVD???
28/10/2009 13:00:47
I'v got the facsimille reprint of vol 1 1898,its a book 190 x250 x20mm,hard covered,now 110 of those(and the newer ones bigger)is going to take up a lot of room,be much better on disc,my book cost nz$25 about 15yrs ago,second hand,hate to say how much it would be new,prob nz$60+,got to have the adds,its amazing the things you can't get now that you could100yrs ago!IAN SC.
Thread: Hot air and stirling engines
28/10/2009 12:30:40
The tube sounds ok,I even do that with water pipe,although once after I had taken the weld ridge off the inside the pipe popped open and I had to clamp it up and weld it down the outside,its still in use as a power cylinder.The 35mm stainless tube i'v got needs an end fitted and a thread on the other end.Looks like a good forecast for Sunday,I want plenty of rain between now and then,give use water in the dam to run the turbine,we run it two or three times for about 5 miniuts a time depending on the water supply,It might only be about 8hp,but it uses water at a prodigious rate.Think the forecast is NW,at Homebush thats good,its sheltered from that,see you any time from 10am,I'll probablly be there 9-9.30,got to oil the machinery,I was supposed to do it on tues but something else came up.Oh well theres a bit of sleet now,its been raining a few hrs,it must be bed time.IAN S C Hi circlip see your on tonight,yep Im wandering again!

Edited By Ian S C on 28/10/2009 12:38:31

Thread: steam taxi by MARTIN RANSON
25/10/2009 09:35:05
stevieboy,it may be worth following the Stockport Vacuum Engine,currently running in ME.IAN S C
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