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Member postings for Circlip

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

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Thread: Hot air and stirling engines
27/12/2009 11:50:26
Couple of ways to ponder Peter (Sorry)
 
  Open 3 jaw chuck so that the diameter of the inner ring of the jaws is smaller than the finished O/D of the plate.
 
  Put a layer of masking tape on the face of the jaws.
 
 Cut the outside diameter of the plate by hand means to get rid of the corners.
 
 With a revolving tailstock centre and a parallel packing piece, sandwich the plate between them and the chuck jaw ends as centrally as possible.
 
  By carefull turning you can turn the outside edge to diameter.
 
  Another way is to screw a piece of MDF or Chipboard onto a face plate and stick the Plate to be turned onto it with double sided adhesive tape.
 
  Again, a sandwich using the tailstock etc holds the plate firmly and you can turn like treppaning onto a "Safe" surface.
 
  Superglued bits are Ok. but beware of heat as that is used to break the joints free, but even using that I would use the sandwich metod as metals don't absorb glues very well.
 
   Regards   Ian.
Thread: Choice of small milling machine
27/12/2009 11:06:32
Don't knock the combies Ian, at the end of the day, it's down to the skill of the operator and there are loads of examples of superb work on various other forums made on them. The later generation of Taiwanese machinery (BEFORE they had to bow to the mass exports of their mother country) are good to go "Out of the box" but the early ones from there, just like the first generation Chinese, were Pigs ears.
 
  And for combies, I am looking at BOTH types regarded as such, the ones with the milling head as part of the headstock of the lathe and also with the head and column bolted to the back of the lathe bed.
 
  Regards  Ian.
Thread: Selecting a size of boiler to a marine steam engine of known size..
27/12/2009 10:50:37
Jens, your command of English is far better than my command of your native language, but to answer what I think you have asked :-
 
  A given content of water in any boiler is capable of generating a certain volume of steam. The way to increase the volume of steam is to feed the boiler while it is operating, with more water to compensate for that which is evaporated. You do this by adding a boiler feed pump which can be operated manually or coupled to the engine but needs to be controlled within limits so that not too much OR too little is fed in.
 
  Vapour (Steam) pressure is controlled by burner heat and also heating surface which are determined by  the evaporative rate of a boiler, but the design of the boiler controls the efficiency of the heating surface.
 
  DON'T stop asking questions, but it will become a lot clearer when you see the book mentioned. K.N. gives worked examples of how to "Size" a boiler for the engines requirements and also the different DESIGNS of boiler for different applications.
 
   There are times when you want to tear your hair out with the course you have chosen to amuse yourself with, but it IS worth it in the end.
 
   Regards  Ian. 

Edited By Circlip on 27/12/2009 10:52:00

Thread: Just bought myfirst lathe now what?
26/12/2009 13:17:04
Last Boxford vertical slide I saw for sale was on the "Lathes" site at a mere £400. Get some lumps of steel and make one, Plenty of designs.
 
  Regards  Ian.
Thread: Selecting a size of boiler to a marine steam engine of known size..
26/12/2009 13:01:23
Jens, you should be paying NO MORE than £14.99 for a NEW copy of the book.
 
       http://www.teepublishing.co.uk/search.php   and http://www.camdenmin.co.uk/have them. Had there been any current Model engineering Exhibitions, you could have probably bought it cheaper.
 
   Regards  Ian.

Edited By Circlip on 26/12/2009 13:04:24

Edited By Circlip on 26/12/2009 13:08:45

Edited By Circlip on 26/12/2009 13:10:57

Edited By Circlip on 26/12/2009 13:12:23

25/12/2009 10:00:16
And a very Merry Christmas to you too Jens Eirik. It's a bit late for a Christmas present, but a book which falls into your requirement is "Model Boilers and Boilermaking" by K.N.Harris. Not only does it give a full explanation of how to size a boiler but shows the construction of various types.
 
   Best  Regards  Ian.
Thread: That time AGAIN
23/12/2009 11:57:49
Well Guys , some prannock had to start it, so :-
 
  HAPPY CHRISTMAS to all on the website.
 
  Hope everyone has a peacfeful time and have made enough hints so that all the relations and loved ones bought bits that although strange to some may be useful to the likes of us.
 
  And to the two unsung heroes, DC1 and you too Richmond, heres hoping that the rest of the M/E management get THEIR fingers out next year to save the headless chicken syndrome that you two have had to bear.
 
  Best Regards  Ian.
Thread: Work Hardened Gunmetal
22/12/2009 16:59:52
Is it magnetic??
 
   Regards  Ian.
Thread: Advert Layout
22/12/2009 12:26:21
Could have been worse, remember "Popular Mechanix" ??
 
   Regards  Ian.
Thread: Work Hardened Gunmetal
22/12/2009 12:13:41
Sure it IS Gunmetal and not Alumininininium Bronze??
 
   Regards  Ian.
Thread: lathe tool advice
22/12/2009 12:11:13
That seems to be two of us that are "Thick" Kwil.
22/12/2009 08:54:21
I keep re-reading the O/P but keep missing the diameter. Which line is it on??
 
   Regards  Ian.
21/12/2009 17:09:15
You COULD quite easily start a carbide/HSS flame war with this one Gordon, BUT, HSS is sharpened using a conventional grinding wheel so you can have more stabs at the offending material without damaging Carbide tips or inserts.
 
  Problem with unknown materials is just that. As a newbie, (And to be asking this question doesn't take rocket science to work out) you should restrict yourself to materials with known properties before commiting yourself to rubbish (In material terms). Once you've got how to sharpen tools to machine KNOWN properties, then you can deviate.
 
  Basically you've told us it's Metal. Turning speed?? Coolant?? What colour are the chips coming off?? What SHAPE are the chips??
 
  I'm NOT mocking OR taking the ------- micky, but these are salient features.
 
 MOST Carbides don't like intermittent cuts, but I'm not discounting them, It's just that I preferr to do it properly and use HSS.
 
   Regards  Ian.
Thread: Just bought myfirst lathe now what?
21/12/2009 16:46:49
The saddle isn't used as the base for a milling head on any machine Stephen. The cross slide is utilised as a milling table, but the milling heads in the case of all the Chaiwanese hobby lathes (Copies of the Emco range) have the head bolted to the back of the bed on a special tapped and machined pad. This wasn't a standard on the Boxford, but the other fitting method was the one used on the Dore-Westbury for the Myford and that was bolted to the R/H end of the bedways.
 
  On the other two in one machines, the milling head is part of the headstock.
 
  Regards   Ian.
 
  Had to dive in an edit this one, a VERSION of the D/W was used on the Myford, There's a nice looking BENCH type in the sales ads at the moment and I DON'T know the seller, but thats why the edit.

Edited By Circlip on 21/12/2009 17:13:02

Thread: Hydrogen embrittlement
19/12/2009 11:37:21
What a set of damn wimps, you tell her YOU'RE the man of the house so what you say goes! (She told me to put that).
 
  In normal households, (The ones that do Sunday roasts) that's the day to do the "Blueing" and tempering. Ovens already hot so you're not wasting energy heating it up and providing you clean your bits (Metaphorically speaking) What's the problem??
 
  I do wait untill the lunch is cooked before the racks sprout dangly bits of wire with spindles etc. hung on them. Favourite colours (Colors - for the Collonials) are dark blue and purple, quench in gearbox oil (Clean) and allow to drain, - Gas mark or Regulo - Look it up in Tubal Cains "Model Engineers Handbook"
 
   Regards  Ian.
Thread: Boiler Feed Pump
18/12/2009 12:52:15
After all the Maffs have been applied and the hypothesees? stated, where in the equasion do you apply the third law of Murphy???
 
  The optical sensor system is still being investigated and requested by lots on the toy boat sites and the ultimate steaming system, Flash, is being deeply investigated by a guy that knows his onions and is applying PIC's to control systems for both boiler and Gas feed. In NO way am I criticising his application cos without guys like this we wouldn't have had any of the old"Masters" of experimentation, BUT, does the average player with toys need to have such sophistication?? Do we really need an IT qualification to enjoy a quiet afternoons playing??
 
  With regards to feeding the beast, whats wrong with the simple engine driven feedwater pump with a simple bypass fitting?? Worked successfully for years before chips with everything? With the Sun being a thirsty engine with plenty of power, an engine driven pump won't sap much power away, but with some of the smaller engines is anything more than a hand operated feed pump required??
 
  When you go for a "Session" with one of your toys, set a stopwatch going when you start and time to when you stop to have a "Rest". Many would be surprised that what seems ages in fact is far less than they thought so the added complication of some control systems doesn't justify the added complication or frustration.
 
  Regards  Ian.
 
Forgot to add, if the "Roarer" burner system ain't broke, don't fix it wiv Gas.

Edited By Circlip on 18/12/2009 12:57:31

Thread: Flanging tender side panels
18/12/2009 12:15:47
Nigel et al, DON'T use plastic resins to try to seal the tanks. If Steel the surface will rust and the fibreglass will peel (JUST like it does when repairing holes in car panels). It's good for making original items like boat hulls and complete panels, but an absolute b*tch for "Patching" things.
 
  Thought about having the finished assembly Galvanised?? (Hot Zinc dipped) Check with the Yelling Pages.
 
  Regards  Ian.
Thread: New MEW Digital archive - access?
17/12/2009 19:10:34
Sorry DC1, still think that it would have been more sucessful to sell hard copy CD?DVD's cos looking at the front page of the site today the ad. looks a right pigs ear. We might like to rocket into the digital era, but untill the basics are sorted the website designers need to go back to school.
 
   Regards  Ian.
Thread: Senior milling machines
17/12/2009 13:29:41
The "Force" didn't ride round on Venom Clubmans Steve. Bearing pre-load figures should be obtainable from the bearing manufacturers.
 
  Regards  Ian.
Thread: Why build a Stirling Engine?
16/12/2009 16:46:10

 
  

Why build a Stirling Engine?

 
  Cos you can, but can you get it running? THATS the trick, no brute force of high ( or medium or low) powered steam.
 
  Regards  Ian.
<< First < Prev 71 72 73 74 75 76 77 78 79 80 81 Next > Last >>
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