Here is a list of all the postings GoCreate has made in our forums. Click on a thread name to jump to the thread.
Thread: Lapping valve tapered plug |
24/09/2009 14:42:55 |
Hi Meyrick Thanks for your reply I was being led by the drawing saying grind in the valve plug but what you say sound good to me. Basically making the cutter/reamer and plugs at the same setting and keeping the quality good means there should be no or little problem. Unfortunately I work overseas most of the year which some what slows progress on my Allchin. However, I have a small Sherline that I use in my overseas apartment so progress can be made on smaller parts. I will make these parts following your advice but will not be able to test them until I get back to the UK in December. Again Thanks Nigel
|
19/09/2009 09:19:49 |
Hi everyone
I am building a 3" scale Allchin, I am looking at making the draincocks for the cylinders which have a tapered plug. The drawing says the valve body and plug tapers should be ground in. I am concerned that if I lap/grind them in using a diamond or similar grinding paste then the abrasive is going to become embeded in the parts. (The drawing suggests bronze for both parts). I was just wondering what procedure is normaly used, is there a method of lapping in the tapers without impregnating the parts with abrasive? At this scale the plug will be 1/4" diameter.
Many Thanks
Nigel
|
Thread: Boiler regulations update |
13/09/2009 03:10:54 |
Hi As a grumpy old so & so I enjoy all your rant and rave but it's not answering the question. I seem to remember way back that one or some of the model engineering associations worked with HSE regarding our boilers and some common sense was agreed in the form of a standard which was published in ME. If this is correct it would be helpful if the ME associations could work with ME magazine, and post the regs as they apply to us on this site. This is important information may of us need so easy access would be a great bonus. All this traceability seems to be about tracing all those that can be held to account for what ever has gone wrong, as such you would expect all those along the line to take more care in providing what ever it is they provide. Although I agree that HSE goes over the top, for such a critical item as a boiler some commonsense easy to apply standard guidance would be of benefit. I believe or boiler designs have stood the test of time and are very safe designs so there safety is down to the individual construction and the final tests. Were regs published in ME or am I mistaken? Regards Nigel PS Due to a glitch I may have posted this twice! |
Thread: crankshaft bearing material |
12/07/2009 05:00:32 |
Thanks Duncan for your suggestion to use white metal, that sound interesting and will be a new experience, I think I will give that a go, in a year or two though. |
05/07/2009 03:44:29 |
Hi Meyrick, thanks for your reply, very much appreciated, you have confirmed my fears but as you sugest there is no need to panic now, As you suggest I will finish the engine and get steaming then line the beraings with 660 bronze during winter workshop hibination.
You mentioned BS recommendations, do you know where I can find info on BS recommendations for bearings and shaft combinations?
Kind regards
|
Thread: acid pickle |
27/06/2009 02:47:06 |
Hi
I bought a motorbike battery on ebay for £12 which came with a separate electrolyte pack. I bought it for the battery, not the acid. Probably an expensive way to buy a small quantity of acid. The Citric Acid route seems a safer and convienient.
|
Thread: crankshaft bearing material |
27/06/2009 02:33:49 |
Hi, I am building a 3" scale Allchin, The crankshaft and first drive shaft are in mild steel, I made the bearings from phos. bronze PB102 because I had some available. Now I am wondering if it was a good choice, I am worried the phos.bronze may only be good for hardened steel shafts and my mild steel shafts will wear more than the bearings. I am thinking I should bore out the bearings and fit a SAE660 leaded bronze or LG2 gunmetal liners
I would appreciate anyone's advice or experiance.
Many Thanks
|
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
Sign up to our newsletter and get a free digital issue.
You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy
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.