bigandy
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 posted on 26/7/05 at 01:34 PM |
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Diesel Vacuum pump
Afternoon all.
I'm trying to find out some specifcations of a diesel engine vacuum pump (used to provide vacuum for the brake servo to work properly I guess).
My aim is to find out if one could be used as a vacuum pump for use in composites manufacture. I'm only talking about small RC plane parts by
the way.
Basically the pump would be used to create a vacuum (or partial vacuum, around 15 to 20" Hg) in a bag, whihc contains the composite layup. this
allows a huge pressure to exerted on the layup, squeezing it together far better than a few heavy books!
If anyone knows what rating the pumps are (i.e how much vacuum they can pull!) then can you let me know? I'm not after any specific pumps at
the moment, but I guess the bigger the better!
Cheers
Andy
Dammit! Too many decisions....
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Syd Bridge
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| posted on 26/7/05 at 01:42 PM |
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A good vacuum cleaner will give you more vacuum than is needed for wet layups. Be careful of the vane pumps, as in the diesel types. The volatiles in
the resin will be sucked out and knacker the vanes. No vacuum pretty quick!
Syd.
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