Date: Tue, 06 Apr 2010 19:50:25 -0400
From: Roger <sub1@rogerhalstead.com>
Subject: Re: [Amps] Hmmmm...Legal limit boiled the oil in the cantena
It's all for show. They don't need near that HP to run them, they don't
need nitrous oxide. More than likely the crank broke from the
acceleration and extra power from the nitrous oxide.
## with a 350 V-8... You either use a steel forged crankshaft
or a 454... take your pick. A stock 350 crank will eventually break.
Figure the
monstrous SWR from a mobile antenna being fed 75000 watts.
## what SWR ? There isn't any. The connectors would flash
over if there was any amount of swr.
It'd look
like a lightning generator. But it's unlikely they can do better than
50% efficient with the setups.
## the monoband Rf decks are a lot more than 50% eff. They
have the ants down to a fine art.
So given 150 KW input they need 201 hp
plus change.
## On the last gen set install at work, a few yrs back, the
power eng tells me the fan blades, used to cool the rad,
ate up 65 hp alone... and that was not a big gen set.
The lousy power factor + harmonics from the HV power
supply are hard on any gen set.
## a typ 60 kva gen set would use a 120 hp diesel motor,
no turbo, and 410 cu inch displacement.
Given the generators are not 100% efficient AND the output
frequency will change with RPM who knows what they get out of them.
## The 4x15 will require 10 kv @ 6A.. and that's just for one tube.
These 11m ops will increase the fil V by 5-9%, to get more emission
from them. After the 10 sec shoot out, the fil v is quickly reduced.
## some of em used a special 3 phase plate xfmr. [dahl built some of them]
Some used train locomotive generators. Single rotor, dual stator, 1000A per
stator.
## apparently, the prize money can be well over $25K+ on weekends,
I dunno who bank rolls all this. Sure, they are nuts.. but they are having
..'fun'... and keeping the tube rebuilders in business. Just trying to
generate
the power in the 1st place would be 90% of the tech problem. .
Jim VE7RF
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