<Noxz>
currently looking at 2 diaphragm pumps, both state 2mbar, one states ptfe diaphragms (which is great) but I cant fin too much info on the other one regarding that but this other one is 3x as fast.. so would certainly want it just for that
<Noxz>
rebuild kits (flapper valves, o rings, and diaphragms) are rather expensive though, but the one manual I got stated good for 10k hrs
<Noxz>
so likely decent vacuum if it appears in good shape
<Noxz>
both places did only basic power on and if pulled a vacuum, no gauge
<Noxz>
so I could likley make a shotty offer due to no testing
<Noxz>
oh, the slower one is also DC, which means easy variable (why would you ever want to go lower speed??) and owudl require a DC power supply (easy)
pie__ has joined #homecmos
pie_ has quit [Read error: Connection reset by peer]
<Noxz>
I see people writing papers with this as a backing pump and getting 3*10^-6 mbar
<Noxz>
with their setup, that may have leaks
<sync>
which is not a lot depending on what you want to do
<sync>
we try to get base pressures of 10^-11mbar
<Noxz>
it's a start though, and that is with zero oil contamination issues
<Noxz>
also, who is 'we' ?
<Noxz>
and the idea of two turbos is interesting
<Noxz>
let's offer something for this higher volume one.. why not
<Noxz>
if that fails then I'll query the other guy about the DC one
<Noxz>
wow, seemed they declined a little too soon, like 1s after I submitted
<Noxz>
I wonder if that is automated for them or not
<Noxz>
meh, let''s bump it up slightly and see how long the decline will take
<Noxz>
declined immedietly
<Noxz>
wtf
<Noxz>
autodeclined again
<Noxz>
lol, autodeclined again, apparently I Have one more chance
<Noxz>
starting to not be too worth it, for an unknown vacuum level and an expensive rebuild kit..
<Noxz>
let's try 90% of the orig price, that's still feasable... maybe.. *gulp* .. same price there abouts as the slower capacity DC one.. which has the only advantage of slowing down when higher vacuum is atained for sound/vibration reasons, I doubt any AC interferance would be an issue at this point
<Noxz>
there's still a buy-it-now for it incase this doesnt go through, but I sort of want to pull the trigger on this
<Noxz>
declined, lol
<Noxz>
that was a few penies higher than 90% of the offer
<Noxz>
BIN*
<Noxz>
if they wont take 10% off, damn
<Noxz>
I sent a message stating my woes with offering, we'll see
<Noxz>
I would like that one more than the other (DC, 1/3 the speed/volume)
<Noxz>
but not properly tested, hrmph
<Noxz>
emailed the one place that has a rebuild kit to see if they know what material the stuff is made out of, FPM/PTFE like most others in the line or something of lower quality