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Listers
About a month ago I posted to the list looking for a verification of a CFM =
calculation of the stock 4 blade fan on a 100. =20
Bill Atterbury responded that my numbers looked like they were off by a fac=
tor of 10. Bill was correct.=20
After revisiting the question it looks like the CFM should be approximately=
:
Fan specs: Pitch=3D 1-1/8 inch=20
Overall diameter=3D14.75 inches=20
CFM @ 700 RPM =3D310 CFM
CFM @1000 RPM =3D444 CFM
CFM @4000 RMP=3D 1776 CFM
So if you wonder why a small 12 inch electric fan that puts out 1250 CFM (F=
lexALite#111) seems to cool the 100 a lot better at idle
this may help to explain it, unless of course I have made another mistake.=
=20
Thanks
Perry
Sent from Mail for Windows 10
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--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal>Listers</p><p class=3DMsoNormal>Abou=
t a month ago I posted to the list looking for a verification of a CFM calc=
ulation of the =C2=A0stock 4 blade fan on a 100.=C2=A0 =C2=A0</p><p class=
=3DMsoNormal>Bill Atterbury responded that my numbers looked like they were=
off by a factor of 10. Bill was correct. </p><p class=3DMsoNormal>After re=
visiting the question it looks like the CFM should be approximately:</p><p =
class=3DMsoNormal>Fan specs: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 Pitch=3D 1-1/8 inch <o:p></o:p></p><p class=3DMsoNormal style=3D'=
margin-left:.5in;text-indent:.5in'>Overall diameter=3D14.75 inches <o:p></o=
:p></p><p class=3DMsoNormal>CFM @ 700 RPM =3D310 CFM<o:p></o:p></p><p class=
=3DMsoNormal>CFM @1000 RPM =3D444 CFM<o:p></o:p></p><p class=3DMsoNormal>CF=
M @4000 RMP=3D 1776 CFM<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p=
></p><p class=3DMsoNormal>So if you wonder why a small 12 inch electric fan=
that puts out 1250 CFM (FlexALite#111) seems to cool the 100 a lot better =
at idle<o:p></o:p></p><p class=3DMsoNormal>this may help to explain it, unl=
ess of course I have made another mistake. <o:p></o:p></p><p class=3DMsoNor=
mal>Thanks<o:p></o:p></p><p class=3DMsoNormal>Perry</p><p class=3DMsoNormal=
><o:p> </o:p></p><p class=3DMsoNormal>Sent from <a href=3D"https://go.=
microsoft.com/fwlink/?LinkId=3D550986">Mail</a> for Windows 10</p><p class=
=3DMsoNormal><o:p> </o:p></p></div></body></html>=
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