small fan
small fan
(OP)
i'm making an electric supercharger for a petrol chainsaw. i need to find a fan capable of the job. it must run at 24v, increase air pressure by 10-15psi, it doesn't need to move a great volume (normal intake is only about 1.25 litres per minute; less than 1/20th cfm). it does need to be small - a few inches in each direction only.
any ideas?
any ideas?





RE: small fan
RE: small fan
what uses a 24v turbine? model aircraft perhaps?
RE: small fan
RE: small fan
RE: small fan
i was tinking about chopping up a portable vacuum cleaner for its motor and cantrifugal turbine. what are people's thoughts? does anybody know of a 24v model?
RE: small fan
i know my flow rate doesn't seem right. my motor uses 1.25 litres of petrol in about 15 minutes. can somebody check my sums??
1.25 litres / 15 mins = 833 ml/min
883 ml*fuel x 14.7 = 1.225 litres*air
1.225 litres/m = 0.04325475 cfm
???
RE: small fan
RE: small fan
RE: small fan
Your arithmetics is incorrect:
1.25 l /15 min = 83.33 ml assume 1g.ml (well, less but close)
I assume from your posting that the fuel to air weight ratio is 1 : 14.7. The sp.weight of air is 1.23kg/m3
83. * 14.7 = 1220 g air = .99 m3 ---> 1m3= 35.3 cf/min
<nbucska@pcperipherals.com>
RE: small fan
anybody got any good ideas for a fan/turbine suitable? it should probably move about 50cfm.