The best explanation of roots blowers can be found in Roger Huntington's
1950 "Souping the Stock Engine." This can be bought today in Repo. Easier
to read it that for me to explain it.
Upping overdrive 10% would have a much bigger effect on a small engine than
on a large one.
Dave the Hayseed
----- Original Message -----
From: "Paul Bland" <paul.blandavon@btinternet.com>
To: "lsr" <land-speed@autox.team.net>
Sent: Wednesday, October 09, 2002 9:11 AM
Subject: blower ratios (not strictly LSR)
> List, I thought I'd take advantage of this quite period, does anyone know
how
> much the boost on a 6:71 rootes blower increases as a function of
overdrive
> increase? i.e. if I already know how much boost I've got at a certain O/D
> percentage, what would be the boost increaes if I up the overdrive by say
10%
> or 20%, I'd like a rough idea rather than just blindly swapping pulleys
and
> seeing what happens.
> Thanks, Paul.
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/// what is needed. It isn't that difficult, folks.
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