Hi Steve, The IP cylinders are nicely made...I could never make anything that works as fine But...
When I first get the cylinders look in the ends of the distribution block I have had them were they are partially blocked with brass scarf...careful twidle with a suitable size drill does great things for the running properties ...also I put all my new IP cylinders in a contaier with some dish soap and pump them a few times under the water surface...all sorts of bits and metal filings can be found in the bottom of the container upon removal of the cylinder...then oil them up and you are ready to go. IP replacement "O" rings are made of a high temp red material...I belive the originals in mine were a grey/black colour...the originals in mine wore to a "D" section...that is the surface sliding on the cylinder walls was worn flatish...my friend and I got a bunch of the new reds and really like the sealing properties...IP were aware that some of the old "O" rings were wearing...I have replaced the "O" rings in all my IP's when they have come due for service. Most of my cylinders have many hours of steaming. ...you may have a good seal with oil but steam is a whole different thing...I have had locos run sweet on air but horrible on steam. That little step in the cylinder has me pondering...unless the "O" ring had completely wore down to metal?? ....an abrupt step me thinks was a glitch in the original machining...maybe the bore tool picked in the machining. ...is it all the way around on the inside with a sharp step? ...if it is I would get in touch with IP for the last word on that...sounds like the step is cutting the "O" rings...I think it is a manufacturing problem...they are nice folks...upon hearing the problem they just might ship you a new cylinder. ...also they make the 1/8" "O" rings for the Reversing valve...the old black ones go hard and flat...they stay sealed but if you take out the steam pipes for any reason a leak is a for sure...there new replacement ones are springy red like the cylinder ones...and they stay springy ...I have red ones in all mine and my friends wobblers. Have you had them from new...if not then someone might have been in there? Tony ----- Original Message ----- From: <[EMAIL PROTECTED]> To: "Small-scale live steam discussions" <[email protected]> Sent: Wednesday, October 26, 2005 8:24 PM Subject: Re: [SSLiveSteam] DisassemblingI.P. Engineering Jane/Mamod Cylinders > With all the expert advice I got the cylinder disassembled without mishap. > To tap out the cylinder end I did use a correctly-threaded screw to clamp > the cylinder to an aluminum plate that I clamped in the vise. A small > piece of brass strip was wedged between the cylinder and the vise jaw to > bear the force of the hammer blows. > > Inside the cylinder were both brass shavings and threads of black > material - probably oil-saturated o-ring shavings. After cleaning up, the > piston, with liberal oil, would seal as well as the other cylinder, at > least at one end. > > The cylinder bore is ribbed from machining, and when looking carefully a > very slight step in the bore diameter can be seen about 1/2" down. > Probably no more than a few ten thousandths, but it can be seen > distinctly. > > Now I'm debating whether to try to polish out the machining marks, and > hopefully reduce the step in the bore, or to leave well enough alone. I > will fit a new o-ring for sure. And I'll check its fit before doing any > polishing. > > Thank you for the posting the deWinton photo, Tony. When I get mine all > back together I'll post a photo of it, too. > > Steve > > > __________________________________________________________________ > Switch to Netscape Internet Service. > As low as $9.95 a month -- Sign up today at > http://isp.netscape.com/register > > Netscape. Just the Net You Need. > > New! Netscape Toolbar for Internet Explorer > Search from anywhere on the Web and block those annoying pop-ups. > Download now at http://channels.netscape.com/ns/search/install.jsp > _______________________________________________ > SSLiveSteam mailing list > Send messages: [email protected] > Cancel subscription: http://postfix.45mm.com/mailman/listinfo/sslivesteam > Rules: http://www.45mm.com/sslivesteam_guide.html > > _______________________________________________ SSLiveSteam mailing list Send messages: [email protected] Cancel subscription: http://postfix.45mm.com/mailman/listinfo/sslivesteam Rules: http://www.45mm.com/sslivesteam_guide.html
