Erik Lotoszynski wrote: > > Will a compressor from an air conditoner draw enough > vacuum for bagging?
Possibly. People have used old refrigerator compressors http://members.ozemail.com.au/~flyingwing/vacbag/ I think modern refridgerants require higher vacuum than Freon did, so it might work really well. > It wouldn't have to be continuous duty if a vacuum > switch is used with a narrow deadband. More imporant is the sealing of the bag, and of the pump (I've got a checkvalve on my pump as it leaks) If there are no leaks, deadband doesn't matter. If you have leaks, narrrow deadband is preferable, but can mean more cycling of the pump, which causes reduced motor life. If the run time is too high, you have leaks. If you can't seal the leaks, adding a resevoir helps to decrease the run time. > Also, what is the purpose of the reservoir? As Einstein said, "Everything's relative". Even when it comes to vacuum and leaks! :) A small leak takes longer to drop the vaccum on a larger volume. A vacuum resevoir increases the volume of the bagging system, so the vacuum pump runs a whole lot initially, but less once the target level of vacuum is reached. Aim for 15 seconds of pump run time every 10 minutes or more if your workshop is within earshot. -- Andrew E. Mileski Ottawa, Canada RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
