I was interested in your reason for using a reservoir, relay, vacuum switch etc. You stated the reason was so that the pump does not have to run all the time.
Be aware that most vacuum pumps are actually designed for 24/7 operation cycles. The constant starting and stopping associated with the type of system you are talking about actually subjects your pump to much more wear rather than less. In addition, a system that uses more parts is also subject to more reasons for failure. A bad switch or contact can cause your valuable lay-up to be ruined if failure should occur during the initial stages of curing. A pump that runs continuously is far less prone to failure. That's been my experience. You will also find that the people that use this type of equipment the most will use a vacuum pump without all the other plumbing. See Phil Barnes' vacuum bagging video and you'll see how he has his shop set up. No switch or reservoir. It's less expensive, less parts required and less likely to fail. My two cents worth. Ed ----- Original Message ----- From: "Andrew E Mileski" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, February 08, 2005 1:51 PM Subject: Re: [RCSE] Re: [soaring] harbor freight vaacum pump, any use? > Tord Eriksson wrote: > > On Sunday 06 February 2005 15.54, [EMAIL PROTECTED] wrote: > > > > Just my gut feeling: Yes, yes, yes! > > > > But add a vacuum switch, of course! > > ... and an airtank to act as a vauum resevoir so the pump doesn't > have to run continuously. > > FWIW, I recently updated my page on adding an electronic vacuum > switch by making it simpler via using a solid-state relay (I got > three new-in-box 25 Amp ones for $20 USD from an Ebay auction). > > My mechanical switch page needs an update too (gonna simplify > it for the electronics shy), but it works; I used it before > I bought a pair of digital electronic switches from Ebay. > > http://isoar.ca/~andrewm/rc/vacswitch/ > > -- > Andrew E. Mileski > Ottawa, Canada > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
